{"id":2036,"date":"2024-07-13T12:41:52","date_gmt":"2024-07-13T12:41:52","guid":{"rendered":"https:\/\/tryvary.com\/?p=2036"},"modified":"2024-07-13T12:41:52","modified_gmt":"2024-07-13T12:41:52","slug":"pcb-substrate-materials-for-aerospace-applications","status":"publish","type":"post","link":"https:\/\/tryvary.com\/vi\/vat-lieu-nen-pcb-cho-cac-ung-dung-hang-khong-vu-tru\/","title":{"rendered":"L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5"},"content":{"rendered":"<p>Khi thi\u1ebft k\u1ebf PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, <strong>l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n<\/strong> l\u00e0 r\u1ea5t quan tr\u1ecdng cho ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady trong <strong>nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111oan<\/strong> t\u1eeb -55\u00b0C \u0111\u1ebfn 125\u00b0C. C\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh c\u1ea7n t\u00ednh \u0111\u1ebfn bao g\u1ed3m <strong>\u0111\u1ed9 d\u1eabn nhi\u1ec7t cao<\/strong>, tho\u00e1t kh\u00ed th\u1ea5p, \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i cao v\u00e0 <strong>s\u1ee9c m\u1ea1nh c\u01a1 h\u1ecdc<\/strong>. C\u00e1c v\u1eadt li\u1ec7u nh\u01b0 nh\u00f4m nitrit v\u00e0 PTFE c\u00f3 t\u00ednh d\u1eabn nhi\u1ec7t v\u01b0\u1ee3t tr\u1ed9i v\u00e0 <strong>h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p<\/strong>, trong khi v\u1eadt li\u1ec7u polyimide v\u00e0 Rogers cung c\u1ea5p c\u00e1c \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n v\u00e0 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc tuy\u1ec7t v\u1eddi. B\u1eb1ng c\u00e1ch hi\u1ec3u c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 \u0111\u1ed1i v\u1edbi PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t v\u1ec1 v\u1eadt li\u1ec7u n\u1ec1n, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t, \u0111\u1ed9 tin c\u1eady v\u00e0 \u0111\u1ed9 b\u1ec1n cao nh\u1ea5t. Vi\u1ec7c kh\u00e1m ph\u00e1 s\u00e2u h\u01a1n v\u1ec1 nhu c\u1ea7u \u0111\u1eb7c bi\u1ec7t c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 cho th\u1ea5y s\u1ef1 hi\u1ec3u bi\u1ebft s\u00e2u s\u1eafc v\u1ec1 vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n.<\/p>\n<h2>B\u00e0i h\u1ecdc ch\u00ednh<\/h2>\n<ul>\n<li>Ch\u1ea5t n\u1ec1n PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ph\u1ea3i ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t (-55\u00b0C \u0111\u1ebfn 125\u00b0C) v\u00e0 y\u00eau c\u1ea7u v\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t cao nh\u01b0 nh\u00f4m nitrit.<\/li>\n<li>C\u00e1c v\u1eadt li\u1ec7u c\u00f3 \u0111\u1eb7c t\u00ednh tho\u00e1t kh\u00ed th\u1ea5p, nh\u01b0 PTFE, ng\u0103n ng\u1eeba \u00f4 nhi\u1ec5m trong m\u00f4i tr\u01b0\u1eddng kh\u00f4ng gian v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u.<\/li>\n<li>Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t cao, h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t th\u1ea5p v\u00e0 \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i cao l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 v\u1eadn h\u00e0nh \u0111\u00e1ng tin c\u1eady.<\/li>\n<li>C\u00e2n b\u1eb1ng hi\u1ec7u su\u1ea5t t\u00edn hi\u1ec7u v\u1edbi c\u00e1c c\u00e2n nh\u1eafc v\u1ec1 c\u01a1 v\u00e0 nhi\u1ec7t l\u00e0 r\u1ea5t quan tr\u1ecdng v\u00e0 c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 polyimide v\u00e0 PTFE mang l\u1ea1i c\u00e1c \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n v\u00e0 nhi\u1ec7t tuy\u1ec7t v\u1eddi.<\/li>\n<li>V\u1eadt li\u1ec7u Rogers v\u00e0 l\u1edbp m\u1ecfng t\u1ea7n s\u1ed1 cao mang l\u1ea1i t\u00ednh to\u00e0n v\u1eb9n v\u00e0 \u0111\u1ed9 tin c\u1eady t\u00edn hi\u1ec7u \u0111\u1eb7c bi\u1ec7t trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, khi\u1ebfn ch\u00fang tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/li>\n<\/ul>\n<h2>C\u00e1c y\u1ebfu t\u1ed1 trong ch\u1ea5t n\u1ec1n PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/h2>\n<div class=\"embed-youtube\" style=\"position: relative; width: 100%; height: 0; padding-bottom: 56.25%; margin-bottom:20px;\"><iframe style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" src=\"https:\/\/www.youtube.com\/embed\/BlDg3tp-Vrc\" title=\"Tr\u00ecnh ph\u00e1t video YouTube\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/div>\n<p>M\u1ed9t c\u00e2n nh\u1eafc quan tr\u1ecdng trong vi\u1ec7c l\u1ef1a ch\u1ecdn ch\u1ea5t n\u1ec1n PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 l\u00e0 t\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c ch\u1ecbu \u0111\u01b0\u1ee3c <strong>nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111oan<\/strong>, B\u1eb0NG <strong>\u1ee9ng d\u1ee5ng \u0111i\u1ec7n t\u1eed h\u00e0ng kh\u00f4ng<\/strong> y\u00eau c\u1ea7u ho\u1ea1t \u0111\u1ed9ng tr\u00ean ph\u1ea1m vi nhi\u1ec7t r\u1ed9ng t\u1eeb -55\u00b0C \u0111\u1ebfn 125\u00b0C. \u0110i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi ph\u1ea3i s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u c\u00f3 t\u00ednh <strong>d\u1eabn nhi\u1ec7t<\/strong>, ch\u1eb3ng h\u1ea1n nh\u01b0 nh\u00f4m nitrit, \u0111\u1ec3 t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3 do c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed t\u1ea1o ra.<\/p>\n<p>Ngo\u00e0i ra, ch\u1ea5t n\u1ec1n PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ph\u1ea3i th\u1ec3 hi\u1ec7n <strong>\u0111\u1eb7c t\u00ednh tho\u00e1t kh\u00ed th\u1ea5p<\/strong> \u0111\u1ec3 ng\u0103n ng\u1eeba \u00f4 nhi\u1ec5m trong m\u00f4i tr\u01b0\u1eddng kh\u00f4ng gian, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng quan tr\u1ecdng. Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 <strong>\u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i cao<\/strong>, gi\u1ed1ng nh\u01b0 PTFE, c\u0169ng r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u \u0111i\u1ec7n trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t <strong>m\u00f4i tr\u01b0\u1eddng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/strong>.<\/p>\n<p>H\u01a1n n\u1eefa, ch\u1ea5t n\u1ec1n PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ph\u1ea3i \u0111\u00e1p \u1ee9ng nghi\u00eam ng\u1eb7t <strong>ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 tin c\u1eady<\/strong> \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng an to\u00e0n v\u00e0 \u0111\u00e1ng tin c\u1eady trong c\u00e1c h\u1ec7 th\u1ed1ng m\u00e1y bay. B\u1eb1ng c\u00e1ch xem x\u00e9t c\u1ea9n th\u1eadn c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y trong vi\u1ec7c l\u1ef1a ch\u1ecdn ch\u1ea5t n\u1ec1n, c\u00e1c k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u kh\u1eaft khe c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng \u0111i\u1ec7n t\u1eed h\u00e0ng kh\u00f4ng.<\/p>\n<h2>\u1ed4n \u0111\u1ecbnh nhi\u1ec7t cho nhi\u1ec7t \u0111\u1ed9 cao<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/optimal_thermal_stability_achieved.jpg\" alt=\"\u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t t\u1ed1i \u01b0u\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>C\u00e1c <strong>\u1ed5n \u0111\u1ecbnh nhi\u1ec7t<\/strong> ch\u1ea5t n\u1ec1n PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady c\u1ee7a c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed trong <strong>m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao<\/strong>, trong \u0111\u00f3 ngay c\u1ea3 nh\u1eefng sai l\u1ec7ch nh\u1ecf trong s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn nh\u1eefng h\u1ecfng h\u00f3c th\u1ea3m kh\u1ed1c.<\/p>\n<p>Trong m\u00f4i tr\u01b0\u1eddng kh\u00f4ng gian, PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t, do \u0111\u00f3 vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t cao l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft. Th\u1ea5p <strong>h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t<\/strong> l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ng\u0103n ng\u1eeba cong v\u00eanh ho\u1eb7c ph\u00e2n t\u00e1ch d\u01b0\u1edbi t\u00e1c d\u1ee5ng c\u1ee7a nhi\u1ec7t, \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a PCB.<\/p>\n<p>V\u1eadt li\u1ec7u n\u1ec1n nhi\u1ec7t \u0111\u1ed9 cao nh\u01b0 <strong>Nh\u00f4m Nitrua<\/strong> ho\u1eb7c <strong>Oxit berili<\/strong> cung c\u1ea5p \u0111\u1ed9 d\u1eabn nhi\u1ec7t v\u01b0\u1ee3t tr\u1ed9i, l\u00ean t\u1edbi 170W\/mK, gi\u00fap t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3 trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n<h2>V\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/high_frequency_communication_technology.jpg\" alt=\"c\u00f4ng ngh\u1ec7 truy\u1ec1n th\u00f4ng t\u1ea7n s\u1ed1 cao\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Khi ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i t\u00ednh \u0111\u1ebfn s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa c\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u, t\u1ed1c \u0111\u1ed9 t\u00edn hi\u1ec7u v\u00e0 suy hao.<\/p>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u s\u1ebd \u1ea3nh h\u01b0\u1edfng <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong>&#44; <strong>qu\u1ea3n l\u00fd nhi\u1ec7t<\/strong>v\u00e0 hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<h3>S\u1ef1 \u0111\u00e1nh \u0111\u1ed5i t\u00e0i s\u1ea3n v\u1eadt ch\u1ea5t<\/h3>\n<p>C\u00e2n b\u1eb1ng hi\u1ec7u su\u1ea5t t\u00edn hi\u1ec7u v\u1edbi c\u01a1 h\u1ecdc v\u00e0 <strong>c\u00e2n nh\u1eafc v\u1ec1 nhi\u1ec7t<\/strong> l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft khi l\u1ef1a ch\u1ecdn <strong>v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p<\/strong> cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5. S\u1ef1 c\u00e2n b\u1eb1ng tinh t\u1ebf n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t c\u1ee7a <strong>\u1ee9ng d\u1ee5ng t\u1ea7n s\u1ed1 cao<\/strong> trong \u0111i\u1ec7n t\u1eed h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n<p>V\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p mang l\u1ea1i \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n v\u01b0\u1ee3t tr\u1ed9i, khi\u1ebfn ch\u00fang tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng t\u1ea7n s\u1ed1 cao. H\u1ecd cung c\u1ea5p gi\u1ea3m <strong>\u0111\u1ed9 tr\u1ec5 t\u00edn hi\u1ec7u<\/strong>, \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n <strong>\u0111i\u1ec1u khi\u1ec3n tr\u1edf kh\u00e1ng<\/strong>, v\u00e0 n\u00e2ng cao <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong> b\u1eb1ng c\u00e1ch gi\u1ea3m thi\u1ec3u s\u1ef1 bi\u1ebfn d\u1ea1ng v\u00e0 m\u1ea5t t\u00edn hi\u1ec7u.<\/p>\n<p>Tuy nhi\u00ean, vi\u1ec7c l\u1ef1a ch\u1ecdn nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y li\u00ean quan \u0111\u1ebfn s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u su\u1ea5t t\u00edn hi\u1ec7u, <strong>t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc<\/strong>v\u00e0 c\u00e1c c\u00e2n nh\u1eafc v\u1ec1 nhi\u1ec7t. V\u00ed d\u1ee5, m\u1ed9t v\u1eadt li\u1ec7u c\u00f3 \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n tuy\u1ec7t v\u1eddi c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc ho\u1eb7c \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t. Ng\u01b0\u1ee3c l\u1ea1i, v\u1eadt li\u1ec7u c\u00f3 \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc v\u01b0\u1ee3t tr\u1ed9i c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t \u0111i\u1ec7n.<\/p>\n<p>C\u00e1c nh\u00e0 thi\u1ebft k\u1ebf PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ph\u1ea3i c\u00e2n nh\u1eafc c\u1ea9n th\u1eadn nh\u1eefng \u0111i\u1ec1u n\u00e0y <strong>s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i t\u00e0i s\u1ea3n v\u1eadt ch\u1ea5t<\/strong> \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 c\u00e2n b\u1eb1ng t\u1ed1t nh\u1ea5t cho \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 c\u1ee7a h\u1ecd. B\u1eb1ng c\u00e1ch hi\u1ec3u \u0111\u01b0\u1ee3c nh\u1eefng s\u1ef1 c\u00e2n b\u1eb1ng n\u00e0y, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p ph\u00f9 h\u1ee3p nh\u1ea5t cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 c\u1ee7a h\u1ecd, \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t cao trong m\u00f4i tr\u01b0\u1eddng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u0111\u00f2i h\u1ecfi kh\u1eaft khe.<\/p>\n<h3>T\u1ed1c \u0111\u1ed9 v\u00e0 m\u1ea5t t\u00edn hi\u1ec7u<\/h3>\n<p>Trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 t\u1ea7n s\u1ed1 cao, t\u1ed1c \u0111\u1ed9 v\u00e0 suy hao t\u00edn hi\u1ec7u tr\u1edf th\u00e0nh nh\u1eefng v\u1ea5n \u0111\u1ec1 quan tr\u1ecdng c\u1ea7n c\u00e2n nh\u1eafc, v\u00ec ngay c\u1ea3 s\u1ef1 suy gi\u1ea3m t\u00edn hi\u1ec7u nh\u1eb9 c\u0169ng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a h\u1ec7 th\u1ed1ng. \u0110\u1ec3 gi\u1ea3m thi\u1ec3u \u0111i\u1ec1u n\u00e0y, v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p r\u1ea5t c\u1ea7n thi\u1ebft trong PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5. Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y, ch\u1eb3ng h\u1ea1n nh\u01b0 PTFE, gi\u1ea3m thi\u1ec3u ph\u1ea3n x\u1ea1 t\u00edn hi\u1ec7u v\u00e0 nhi\u1ec5u xuy\u00ean \u00e2m, n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u t\u1ed5ng th\u1ec3.<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: center\"><strong>V\u1eadt li\u1ec7u<\/strong><\/th>\n<th style=\"text-align: center\"><strong>H\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: center\">PTFE<\/td>\n<td style=\"text-align: center\">2.1<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">FR4<\/td>\n<td style=\"text-align: center\">4.3<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">Polyimide<\/td>\n<td style=\"text-align: center\">3.5<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">G\u1ed1m s\u1ee9<\/td>\n<td style=\"text-align: center\">5.5<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">Epoxy th\u1ee7y tinh<\/td>\n<td style=\"text-align: center\">6.1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn ch\u1ea5t n\u1ec1n c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao trong c\u00e1c h\u1ec7 th\u1ed1ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5. B\u1eb1ng c\u00e1ch ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p, s\u1ef1 m\u1ea5t m\u00e1t v\u00e0 suy gi\u1ea3m t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c gi\u1ea3m \u0111\u00e1ng k\u1ec3, \u0111\u1ea3m b\u1ea3o truy\u1ec1n t\u00edn hi\u1ec7u v\u00e0 truy\u1ec1n d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 \u1edf t\u1ea7n s\u1ed1 cao. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, n\u01a1i t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u l\u00e0 t\u1ed1i quan tr\u1ecdng. B\u1eb1ng c\u00e1ch hi\u1ec3u \u0111\u01b0\u1ee3c t\u1ea7m quan tr\u1ecdng c\u1ee7a v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf v\u00e0 k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c l\u1ef1a ch\u1ecdn ch\u1ea5t n\u1ec1n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ee9c hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady cao nh\u1ea5t trong h\u1ec7 th\u1ed1ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 c\u1ee7a h\u1ecd.<\/p>\n<h3>T\u00f9y ch\u1ecdn qu\u1ea3n l\u00fd nhi\u1ec7t<\/h3>\n<p>Ngo\u00e0i t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u, kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p \u0111\u00f3ng vai tr\u00f2 thi\u1ebft y\u1ebfu trong PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, n\u01a1i nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady c\u1ee7a linh ki\u1ec7n v\u00e0 hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng. Khi thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ho\u1ea1t \u0111\u1ed9ng trong c\u00e1c \u1ee9ng d\u1ee5ng t\u1ea7n s\u1ed1 cao, v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 qu\u1ea3n l\u00fd nhi\u1ec7t hi\u1ec7u qu\u1ea3. Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y, v\u1edbi h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u01b0\u1eddng d\u01b0\u1edbi 3, \u0111\u1ea3m b\u1ea3o m\u1ea5t v\u00e0 nhi\u1ec5u t\u00edn hi\u1ec7u \u1edf m\u1ee9c t\u1ed1i thi\u1ec3u, nh\u1edd \u0111\u00f3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u v\u00e0 ng\u0103n ng\u1eeba s\u1ef1 kh\u00f4ng kh\u1edbp tr\u1edf kh\u00e1ng.<\/p>\n<p>Nh\u1eefng l\u1ee3i \u00edch ch\u00ednh c\u1ee7a v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p \u0111\u1ec3 qu\u1ea3n l\u00fd nhi\u1ec7t trong PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 bao g\u1ed3m:<\/p>\n<ol>\n<li><strong>T\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3<\/strong>: V\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p gi\u00fap t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3, gi\u1ea3m nguy c\u01a1 h\u1ecfng h\u00f3c b\u1ed9 ph\u1eadn v\u00e0 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>Ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u su\u1ea5t cao<\/strong>: B\u1eb1ng c\u00e1ch gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t v\u00e0 nhi\u1ec5u t\u00edn hi\u1ec7u, v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p cho ph\u00e9p v\u1eadn h\u00e0nh hi\u1ec7u su\u1ea5t cao trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u0111\u00f2i h\u1ecfi kh\u1eaft khe.<\/li>\n<li><strong>\u0110\u1ed9 tin c\u1eady v\u00e0 \u0111\u1ed9 b\u1ec1n<\/strong>: Vi\u1ec7c s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p gi\u00fap n\u00e2ng cao \u0111\u1ed9 tin c\u1eady v\u00e0 \u0111\u1ed9 b\u1ec1n t\u1ed5ng th\u1ec3 c\u1ee7a PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/li>\n<\/ol>\n<h2>\u0110\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc v\u00e0 \u0111\u1ed9 b\u1ec1n<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/strength_and_durability_emphasized.jpg\" alt=\"nh\u1ea5n m\u1ea1nh s\u1ee9c m\u1ea1nh v\u00e0 \u0111\u1ed9 b\u1ec1n\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>V\u1eadt li\u1ec7u n\u1ec1n PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ph\u1ea3i th\u1ec3 hi\u1ec7n \u0111\u1eb7c bi\u1ec7t <strong>s\u1ee9c m\u1ea1nh c\u01a1 h\u1ecdc<\/strong> v\u00e0 \u0111\u1ed9 b\u1ec1n \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c <strong>\u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t<\/strong> V\u00e0 <strong>m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t<\/strong> g\u1eb7p ph\u1ea3i trong chuy\u1ebfn bay. \u0110\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc cao l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, v\u1ed1n ch\u1ecbu \u0111\u01b0\u1ee3c rung \u0111\u1ed9ng, ch\u1ea5n \u0111\u1ed9ng v\u00e0 nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t.<\/p>\n<p>C\u00e1c v\u1eadt li\u1ec7u nh\u01b0 Rogers RO3003 v\u00e0 RO4003 mang l\u1ea1i c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc tuy\u1ec7t v\u1eddi, khi\u1ebfn ch\u00fang ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5. C\u00e1c <strong>\u0111\u1ed9 b\u1ec1n u\u1ed1n cao<\/strong> c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 PTFE v\u00e0 Polyimide l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c <strong>\u1ee9ng su\u1ea5t c\u01a1 h\u1ecdc<\/strong> g\u1eb7p ph\u1ea3i trong chuy\u1ebfn bay.<\/p>\n<p>\u0110\u1ed9 b\u1ec1n c\u0169ng r\u1ea5t quan tr\u1ecdng v\u00ec PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady trong th\u1eddi gian d\u00e0i trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n c\u1ea9n th\u1eadn \u0111\u1ec3 \u0111\u00e1p \u1ee9ng <strong>ti\u00eau chu\u1ea9n ng\u00e0nh nghi\u00eam ng\u1eb7t<\/strong> cho hi\u1ec7u su\u1ea5t c\u01a1 kh\u00ed. B\u1eb1ng c\u00e1ch ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc cao, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, ngay c\u1ea3 trong nh\u1eefng m\u00f4i tr\u01b0\u1eddng \u0111\u00f2i h\u1ecfi kh\u1eaft khe nh\u1ea5t.<\/p>\n<h2>T\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u n\u1ec1n polyimide<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/polyimide_substrate_characteristics_detailed.jpg\" alt=\"\u0111\u1eb7c \u0111i\u1ec3m c\u01a1 ch\u1ea5t polyimide chi ti\u1ebft\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>V\u1eadt li\u1ec7u n\u1ec1n polyimide, n\u1ed5i ti\u1ebfng v\u1edbi \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc \u0111\u1eb7c bi\u1ec7t, c\u0169ng c\u00f3 t\u1eadp h\u1ee3p \u0111\u1eb7c t\u00ednh \u0111\u1ed9c \u0111\u00e1o khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh m\u1ed9t l\u1ef1a ch\u1ecdn h\u1ea5p d\u1eabn cho c\u00e1c \u1ee9ng d\u1ee5ng PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5. Nh\u1eefng \u0111\u1eb7c t\u00ednh n\u00e0y, k\u1ebft h\u1ee3p v\u1edbi t\u00ednh ch\u1ea5t ch\u1eafc ch\u1eafn c\u1ee7a ch\u00fang, l\u00e0m cho ch\u1ea5t n\u1ec1n polyimide tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho c\u00e1c m\u00f4i tr\u01b0\u1eddng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u0111\u00f2i h\u1ecfi kh\u1eaft khe.<\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 ba \u0111\u1eb7c t\u00ednh ch\u00ednh l\u00e0m n\u1ed5i b\u1eadt t\u00ednh ph\u00f9 h\u1ee3p c\u1ee7a ch\u1ea5t n\u1ec1n polyimide cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5:<\/p>\n<ol>\n<li><strong>T\u00ednh ch\u1ea5t \u0111i\u1ec7n<\/strong>: Ch\u1ea5t n\u1ec1n polyimide mang l\u1ea1i c\u00e1c \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n tuy\u1ec7t v\u1eddi, khi\u1ebfn ch\u00fang tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, n\u01a1i t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u l\u00e0 t\u1ed1i quan tr\u1ecdng.<\/li>\n<li><strong>S\u1ee9c \u0111\u1ec1 kh\u00e1ng cao<\/strong>: Nh\u1eefng ch\u1ea5t n\u1ec1n n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 h\u00f3a ch\u1ea5t cao, r\u1ea5t c\u1ea7n thi\u1ebft cho c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u0111\u00f2i h\u1ecfi kh\u1eaft khe, n\u01a1i th\u01b0\u1eddng xuy\u00ean ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t v\u00e0 h\u00f3a ch\u1ea5t kh\u1eafc nghi\u1ec7t.<\/li>\n<li><strong>Kh\u00e1ng h\u00f3a ch\u1ea5t<\/strong>: V\u1eadt li\u1ec7u polyimide c\u00f3 kh\u1ea3 n\u0103ng kh\u00e1ng h\u00f3a ch\u1ea5t cao, \u0111\u1ea3m b\u1ea3o c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c c\u00e1c \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t th\u01b0\u1eddng g\u1eb7p trong m\u00f4i tr\u01b0\u1eddng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/li>\n<\/ol>\n<p>S\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a c\u00e1c \u0111\u1eb7c t\u00ednh n\u00e0y, c\u00f9ng v\u1edbi \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a ch\u00fang, l\u00e0m cho ch\u1ea5t n\u1ec1n polyimide tr\u1edf th\u00e0nh m\u1ed9t l\u1ef1a ch\u1ecdn h\u1ea5p d\u1eabn cho c\u00e1c \u1ee9ng d\u1ee5ng PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5. B\u1ea3n ch\u1ea5t m\u1ea1nh m\u1ebd v\u00e0 t\u00ednh linh ho\u1ea1t trong thi\u1ebft k\u1ebf v\u00e0 ch\u1ee9c n\u0103ng khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho nhi\u1ec1u \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n<h2>L\u1ee3i \u00edch v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ch\u1ea5t n\u1ec1n PTFE<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/ptfe_substrate_pros_and_cons.jpg\" alt=\"\u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ch\u1ea5t n\u1ec1n ptfe\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>TRONG <strong>\u1ee9ng d\u1ee5ng t\u1ea7n s\u1ed1 cao v\u00e0 vi s\u00f3ng<\/strong>&#44; <strong>Ch\u1ea5t n\u1ec1n PTFE<\/strong> cung c\u1ea5p m\u1ed9t s\u1ef1 k\u1ebft h\u1ee3p \u0111\u1ed9c \u0111\u00e1o c\u1ee7a <strong>t\u00ednh ch\u1ea5t nhi\u1ec7t v\u00e0 \u0111i\u1ec7n<\/strong> khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh m\u1ed9t l\u1ef1a ch\u1ecdn h\u1ea5p d\u1eabn cho <strong>thi\u1ebft k\u1ebf PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/strong>. C\u00e1c \u0111\u1eb7c t\u00ednh nhi\u1ec7t tuy\u1ec7t v\u1eddi c\u1ee7a ch\u1ea5t n\u1ec1n PTFE khi\u1ebfn ch\u00fang tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng vi s\u00f3ng v\u00e0 t\u1ea7n s\u1ed1 cao, cung c\u1ea5p <strong>t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3<\/strong> v\u00e0 gi\u1ea3m \u1ee9ng su\u1ea5t nhi\u1ec7t.<\/p>\n<p>Ngo\u00e0i ra, ch\u1ea5t n\u1ec1n PTFE c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p, cho ph\u00e9p truy\u1ec1n t\u00edn hi\u1ec7u hi\u1ec7u qu\u1ea3 v\u00e0 <strong>gi\u1ea3m m\u1ea5t t\u00edn hi\u1ec7u<\/strong>, l\u00e0m cho ch\u00fang ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5. H\u01a1n n\u1eefa, ch\u1ea5t n\u1ec1n PTFE l\u00e0 <strong>tr\u01a1 ho\u00e1 h\u1ecdc<\/strong>, \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu v\u1edbi m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t v\u00e0 c\u00e1c h\u00f3a ch\u1ea5t th\u01b0\u1eddng g\u1eb7p trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5. \u0110\u1eb7c t\u00ednh n\u00e0y, k\u1ebft h\u1ee3p v\u1edbi t\u00ednh ch\u1ea5t nh\u1eb9 v\u00e0 b\u1ec1n c\u1ee7a ch\u00fang, g\u00f3p ph\u1ea7n t\u1ea1o n\u00ean <strong>gi\u1ea3m c\u00e2n<\/strong> v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t trong c\u00e1c t\u1ed5 h\u1ee3p PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n<p>Tuy nhi\u00ean, chi ph\u00ed ch\u1ea5t n\u1ec1n PTFE cao h\u01a1n so v\u1edbi c\u00e1c v\u1eadt li\u1ec7u truy\u1ec1n th\u1ed1ng nh\u01b0 FR-4 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn chi ph\u00ed s\u1ea3n xu\u1ea5t PCB t\u1ed5ng th\u1ec3. B\u1ea5t ch\u1ea5p nh\u01b0\u1ee3c \u0111i\u1ec3m n\u00e0y, l\u1ee3i \u00edch c\u1ee7a ch\u1ea5t n\u1ec1n PTFE khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh m\u1ed9t l\u1ef1a ch\u1ecdn c\u00f3 gi\u00e1 tr\u1ecb cho c\u00e1c thi\u1ebft k\u1ebf PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, n\u01a1i hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady t\u1ea7n s\u1ed1 cao l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/p>\n<h2>So s\u00e1nh v\u1eadt li\u1ec7u FR-4 v\u00e0 CEM-1<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/comparing_fr_4_and_cem_1.jpg\" alt=\"so s\u00e1nh fr 4 v\u00e0 cem 1\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Khi \u0111\u00e1nh gi\u00e1 <strong>FR-4<\/strong> V\u00e0 <strong>CEM-1<\/strong> \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, vi\u1ec7c ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng c\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u c\u1ee7a ch\u00fang l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft.<\/p>\n<p>So s\u00e1nh kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t, t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh quan tr\u1ecdng kh\u00e1c c\u1ee7a ch\u00fang s\u1ebd cho th\u1ea5y \u0111i\u1ec3m m\u1ea1nh v\u00e0 \u0111i\u1ec3m y\u1ebfu c\u1ee7a t\u1eebng v\u1eadt li\u1ec7u.<\/p>\n<h3>T\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c so s\u00e1nh<\/h3>\n<p>Trong s\u1ed1 c\u00e1c v\u1eadt li\u1ec7u n\u1ec1n, \u0111i\u1ec3m quan tr\u1ecdng c\u1ea7n c\u00e2n nh\u1eafc \u0111\u1ed1i v\u1edbi PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 l\u00e0 so s\u00e1nh FR-4 v\u00e0 CEM-1, hai l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn th\u1ec3 hi\u1ec7n c\u00e1c \u0111\u1eb7c t\u00ednh ri\u00eang bi\u1ec7t. M\u1eb7c d\u00f9 c\u1ea3 hai v\u1eadt li\u1ec7u n\u00e0y \u0111\u1ec1u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 nh\u01b0ng ch\u00fang kh\u00e1c nhau v\u1ec1 t\u00ednh ch\u1ea5t \u0111i\u1ec7n v\u00e0 c\u01a1 kh\u00ed.<\/p>\n<p>Khi \u0111\u00e1nh gi\u00e1 c\u00e1c v\u1eadt li\u1ec7u n\u00e0y, nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh sau \u0111\u00e2y xu\u1ea5t hi\u1ec7n:<\/p>\n<ol>\n<li><strong>T\u00ednh ch\u1ea5t \u0111i\u1ec7n<\/strong>: FR-4 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi gi\u00e1 tr\u1ecb Tg cao, trong khi CEM-1 mang l\u1ea1i c\u00e1c \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n v\u01b0\u1ee3t tr\u1ed9i, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn thay th\u1ebf ph\u00f9 h\u1ee3p cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 c\u00f3 \u0111\u1ed9 tin c\u1eady cao.<\/li>\n<li><strong>T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc<\/strong>: CEM-1 v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 \u0111\u1ed9 b\u1ec1n u\u1ed1n, x\u1eed l\u00fd t\u1ed1t \u1ee9ng su\u1ea5t v\u1eadt l\u00fd v\u00e0 cung c\u1ea5p gi\u1ea3i ph\u00e1p ti\u1ebft ki\u1ec7m chi ph\u00ed. Ng\u01b0\u1ee3c l\u1ea1i, FR-4 t\u1ef1 h\u00e0o c\u00f3 ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 r\u1ed9ng v\u00e0 t\u1ef7 l\u1ec7 c\u01b0\u1eddng \u0111\u1ed9 tr\u00ean tr\u1ecdng l\u01b0\u1ee3ng t\u1ed1t.<\/li>\n<li><strong>Chi ph\u00ed v\u00e0 t\u00ednh linh ho\u1ea1t<\/strong>: FR-4 l\u00e0 v\u1eadt li\u1ec7u linh ho\u1ea1t, chi ph\u00ed th\u1ea5p, trong khi CEM-1 cung c\u1ea5p gi\u1ea3i ph\u00e1p thay th\u1ebf \u0111\u00e1ng tin c\u1eady, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u1edbi nh\u1eefng \u01b0u \u0111i\u1ec3m c\u1ee5 th\u1ec3 cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/li>\n<\/ol>\n<h3>Ph\u00e2n t\u00edch \u0111i\u1ec7n tr\u1edf nhi\u1ec7t<\/h3>\n<p>Ph\u00e2n t\u00edch \u0111i\u1ec7n tr\u1edf nhi\u1ec7t l\u00e0 m\u1ed9t kh\u00eda c\u1ea1nh quan tr\u1ecdng c\u1ee7a thi\u1ebft k\u1ebf PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00e0 so s\u00e1nh FR-4 v\u00e0 <strong>V\u1eadt li\u1ec7u CEM-1<\/strong> b\u1ed9c l\u1ed9 s\u1ef1 kh\u00e1c bi\u1ec7t r\u00f5 r\u1ec7t trong <strong>d\u1eabn nhi\u1ec7t<\/strong>. <strong>Ch\u1ea5t n\u1ec1n FR-4<\/strong>, v\u1edbi \u0111\u1ed9 d\u1eabn nhi\u1ec7t kho\u1ea3ng 0,35 W\/mK, ph\u00f9 h\u1ee3p v\u1edbi PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, nh\u01b0ng c\u00f3 nh\u1eefng h\u1ea1n ch\u1ebf trong vi\u1ec7c qu\u1ea3n l\u00fd kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t.<\/p>\n<p>Ng\u01b0\u1ee3c l\u1ea1i, v\u1eadt li\u1ec7u CEM-1 c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao h\u01a1n kho\u1ea3ng 0,5 W\/mK, khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn hi\u1ec7u qu\u1ea3 h\u01a1n cho <strong>t\u1ea3n nhi\u1ec7t<\/strong> TRONG <strong>\u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 nhi\u1ec7t \u0111\u1ed9 cao<\/strong>.<\/p>\n<p>C\u00e1c <strong>ph\u00e2n t\u00edch \u0111i\u1ec7n tr\u1edf nhi\u1ec7t<\/strong> gi\u1eefa FR-4 v\u00e0 CEM-1 n\u00eau b\u1eadt t\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c l\u1ef1a ch\u1ecdn ch\u1ea5t n\u1ec1n ph\u00f9 h\u1ee3p cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n <strong>hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u<\/strong> trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 cao. M\u1eb7c d\u00f9 v\u1eadt li\u1ec7u FR-4 c\u00f3 hi\u1ec7u qu\u1ea3 v\u1ec1 m\u1eb7t chi ph\u00ed nh\u01b0ng nh\u1eefng h\u1ea1n ch\u1ebf v\u1ec1 \u0111\u1ed9 d\u1eabn nhi\u1ec7t c\u1ee7a ch\u00fang c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n<p>Ng\u01b0\u1ee3c l\u1ea1i, v\u1eadt li\u1ec7u CEM-1 mang l\u1ea1i kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t t\u1ed1t h\u01a1n, khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p h\u01a1n cho c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 trong \u0111\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng. B\u1eb1ng c\u00e1ch hi\u1ec3u \u0111\u01b0\u1ee3c s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111\u1ed9 d\u1eabn nhi\u1ec7t gi\u1eefa FR-4 v\u00e0 CEM-1, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t khi l\u1ef1a ch\u1ecdn <strong>v\u1eadt li\u1ec7u n\u1ec1n<\/strong> cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n<h3>T\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m<\/h3>\n<p>Trong thi\u1ebft k\u1ebf PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m c\u1ee7a v\u1eadt li\u1ec7u n\u1ec1n \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t \u0111i\u1ec7n c\u1ee7a ch\u00fang trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau. Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n c\u00f3 t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m ph\u00f9 h\u1ee3p l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i c\u1ee7a PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n<p>Khi so s\u00e1nh v\u1eadt li\u1ec7u FR-4 v\u00e0 CEM-1, ng\u01b0\u1eddi ta th\u1ea5y c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 v\u1ec1 t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m. V\u1eadt li\u1ec7u FR-4 c\u00f3 t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m kho\u1ea3ng 0,15% \u0111\u1ebfn 0,25%, khi\u1ebfn ch\u00fang ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 n\u01a1i \u0111\u1ed9 tin c\u1eady l\u00e0 t\u1ed1i quan tr\u1ecdng. Ng\u01b0\u1ee3c l\u1ea1i, v\u1eadt li\u1ec7u CEM-1 c\u00f3 t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m cao h\u01a1n, t\u1eeb 0,4% \u0111\u1ebfn 0,8%, c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a ch\u00fang trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n<p><strong>S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh v\u1ec1 t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m:<\/strong><\/p>\n<ol>\n<li>FR-4: 0,15% \u0111\u1ebfn 0,25%<\/li>\n<li>CEM-1: 0,4% \u0111\u1ebfn 0,8%<\/li>\n<li>T\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m th\u1ea5p h\u01a1n trong FR-4 g\u00f3p ph\u1ea7n v\u00e0o vi\u1ec7c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i ch\u00fang trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/li>\n<\/ol>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m c\u1ee7a v\u1eadt li\u1ec7u n\u1ec1n l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 thi\u1ebft k\u1ebf PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u1edbi \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i. B\u1eb1ng c\u00e1ch l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 t\u1ef7 l\u1ec7 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m th\u00edch h\u1ee3p, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t \u0111i\u1ec7n c\u1ee7a PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau.<\/p>\n<h2>T\u1ea5m d\u00e1n t\u1ea7n s\u1ed1 cao cho h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/advanced_materials_for_aircraft.jpg\" alt=\"v\u1eadt li\u1ec7u ti\u00ean ti\u1ebfn cho m\u00e1y bay\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>C\u00e1c l\u1edbp m\u1ecfng t\u1ea7n s\u1ed1 cao \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, v\u00ec ch\u00fang cung c\u1ea5p \u0111\u1eb7c bi\u1ec7t <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong> V\u00e0 <strong>\u0111\u1ed9 tin c\u1eady trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t<\/strong>, l\u00e0m cho ch\u00fang tr\u1edf th\u00e0nh m\u1ed9t th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu trong c\u00e1c h\u1ec7 th\u1ed1ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 hi\u1ec7n \u0111\u1ea1i.<\/p>\n<p>Nh\u1eefng t\u1ea5m m\u1ecfng n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7n s\u1ed1 tr\u00ean 1 GHz, \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n v\u00e0 \u0111\u1ed9 tin c\u1eady t\u00edn hi\u1ec7u tuy\u1ec7t v\u1eddi trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n<p>M\u1ee9c th\u1ea5p <strong>h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i<\/strong> V\u00e0 <strong>m\u1ea5t ti\u1ebfp tuy\u1ebfn<\/strong> b\u1eb1ng v\u1eadt li\u1ec7u t\u1ea7n s\u1ed1 cao, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u1ea5m n\u1ec1n PTFE, cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao v\u1edbi m\u1ee9c \u0111\u1ed9 suy gi\u1ea3m t\u00edn hi\u1ec7u \u1edf m\u1ee9c t\u1ed1i thi\u1ec3u. Ngo\u00e0i ra, nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y th\u1ec3 hi\u1ec7n s\u1ef1 \u0111\u1eb7c bi\u1ec7t <strong>\u1ed5n \u0111\u1ecbnh nhi\u1ec7t<\/strong>, \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady trong m\u00f4i tr\u01b0\u1eddng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 kh\u1eafc nghi\u1ec7t.<\/p>\n<p>Ch\u00ednh x\u00e1c <strong>\u0111i\u1ec1u khi\u1ec3n tr\u1edf kh\u00e1ng<\/strong> c\u0169ng r\u1ea5t quan tr\u1ecdng trong hi\u1ec7u su\u1ea5t m\u1ea1ch RF v\u00e0 vi s\u00f3ng, v\u00e0 <strong>t\u1ea5m t\u1ea7n s\u1ed1 cao<\/strong> \u0111\u1ea3m b\u1ea3o y\u00eau c\u1ea7u n\u00e0y \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng.<\/p>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u00e1c t\u1ea5m t\u1ea7n s\u1ed1 cao r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n nghi\u00eam ng\u1eb7t c\u1ee7a ng\u00e0nh h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u1ec1 t\u00ednh to\u00e0n v\u1eb9n v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a t\u00edn hi\u1ec7u.<\/p>\n<h2>V\u1eadt li\u1ec7u PCB l\u00f5i kim lo\u1ea1i cho nhi\u1ec7t<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/efficient_thermal_management_solution.jpg\" alt=\"Gi\u1ea3i ph\u00e1p qu\u1ea3n l\u00fd nhi\u1ec7t hi\u1ec7u qu\u1ea3\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Ngo\u00e0i t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u, c\u00e1c y\u00eau c\u1ea7u qu\u1ea3n l\u00fd nhi\u1ec7t nghi\u00eam ng\u1eb7t c\u1ee7a ng\u00e0nh h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u0111\u00f2i h\u1ecfi ph\u1ea3i s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u PCB l\u00f5i kim lo\u1ea1i, c\u00f3 kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t v\u01b0\u1ee3t tr\u1ed9i nh\u1edd t\u00ednh d\u1eabn nhi\u1ec7t cao. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, n\u01a1i s\u1ef1 t\u00edch t\u1ee5 nhi\u1ec7t c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady c\u1ee7a c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed.<\/p>\n<p>V\u1eadt li\u1ec7u PCB l\u00f5i kim lo\u1ea1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3 do c\u00e1c b\u1ed9 ph\u1eadn t\u1ea1o ra trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eed h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 ba l\u1ee3i \u00edch ch\u00ednh c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u PCB l\u00f5i kim lo\u1ea1i:<\/p>\n<ol>\n<li><strong>\u0110\u1ed9 d\u1eabn nhi\u1ec7t cao<\/strong>: V\u1eadt li\u1ec7u PCB l\u00f5i kim lo\u1ea1i, ch\u1eb3ng h\u1ea1n nh\u01b0 nh\u00f4m v\u00e0 \u0111\u1ed3ng, c\u00f3 t\u00ednh d\u1eabn nhi\u1ec7t cao, \u0111\u1ea3m b\u1ea3o truy\u1ec1n nhi\u1ec7t hi\u1ec7u qu\u1ea3 trong c\u00e1c h\u1ec7 th\u1ed1ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/li>\n<li><strong>T\u1ea3n nhi\u1ec7t \u0111\u00e1ng tin c\u1eady<\/strong>: L\u00f5i kim lo\u1ea1i trong v\u1eadt li\u1ec7u PCB gi\u00fap t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3, n\u00e2ng cao \u0111\u1ed9 tin c\u1eady v\u00e0 tu\u1ed5i th\u1ecd t\u1ed5ng th\u1ec3 c\u1ee7a c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed.<\/li>\n<li><strong>Hi\u1ec7u su\u1ea5t n\u00e2ng cao<\/strong>: B\u1eb1ng c\u00e1ch qu\u1ea3n l\u00fd nhi\u1ec7t hi\u1ec7u qu\u1ea3, v\u1eadt li\u1ec7u PCB l\u00f5i kim lo\u1ea1i cho ph\u00e9p c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eed h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ho\u1ea1t \u0111\u1ed9ng \u1edf m\u1ee9c cao nh\u1ea5t, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady cao nh\u1ea5t.<\/li>\n<\/ol>\n<h2>V\u1eadt li\u1ec7u Rogers cho hi\u1ec7u su\u1ea5t cao<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/high_performance_materials_by_rogers.jpg\" alt=\"v\u1eadt li\u1ec7u hi\u1ec7u su\u1ea5t cao c\u1ee7a rogers\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>V\u1eadt li\u1ec7u Rogers, h\u1ed7n h\u1ee3p hydrocarbon \u0111\u01b0\u1ee3c gia c\u1ed1 b\u1eb1ng s\u1ee3i th\u1ee7y tinh, l\u00e0 v\u1eadt li\u1ec7u n\u1ec1n \u0111\u01b0\u1ee3c \u01b0a th\u00edch trong PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, mang l\u1ea1i hi\u1ec7u su\u1ea5t \u0111i\u1ec7n v\u00e0 \u0111\u1ed9 tin c\u1eady v\u01b0\u1ee3t tr\u1ed9i trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111\u00f2i h\u1ecfi kh\u1eaft khe. Th\u00e0nh ph\u1ea7n \u0111\u1ed9c \u0111\u00e1o c\u1ee7a n\u00f3 l\u00e0m cho n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho <strong>\u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 hi\u1ec7u su\u1ea5t cao<\/strong>, \u1ede \u0111\u00e2u <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong> V\u00e0 <strong>t\u00e0i s\u1ea3n t\u1ed5n th\u1ea5t th\u1ea5p<\/strong> l\u00e0 r\u1ea5t quan tr\u1ecdng. <strong>v\u1eadt li\u1ec7u Rogers<\/strong> cung c\u1ea5p <strong>\u1ed5n \u0111\u1ecbnh t\u1ea7n s\u1ed1 cao<\/strong>, \u0111\u1ea3m b\u1ea3o <strong>giao ti\u1ebfp \u0111\u00e1ng tin c\u1eady<\/strong> v\u00e0 truy\u1ec1n d\u1eef li\u1ec7u trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eed h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n<p>C\u00e1c k\u1ef9 s\u01b0 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 th\u01b0\u1eddng th\u00edch v\u1eadt li\u1ec7u Rogers v\u00ec \u0111\u1ed9 tin c\u1eady, \u0111\u1ed9 b\u1ec1n v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n v\u1ec1 hi\u1ec7u su\u1ea5t cao trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111\u00f2i h\u1ecfi kh\u1eaft khe. N\u00f3 \u0111\u1eb7c bi\u1ec7t <strong>kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd nhi\u1ec7t<\/strong> \u0111\u1ea3m b\u1ea3o t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3, ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 c\u00f4ng su\u1ea5t cao.<\/p>\n<p>V\u1edbi t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u01b0\u1ee3t tr\u1ed9i v\u00e0 \u0111\u1eb7c t\u00ednh t\u1ed5n th\u1ea5t th\u1ea5p, v\u1eadt li\u1ec7u Rogers l\u00e0 l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn cho c\u00e1c PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 y\u00eau c\u1ea7u <strong>truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao<\/strong> v\u00e0 giao ti\u1ebfp \u0111\u00e1ng tin c\u1eady.<\/p>\n<p>Trong PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 hi\u1ec7u su\u1ea5t cao, hi\u1ec7u su\u1ea5t \u0111i\u1ec7n v\u00e0 kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd nhi\u1ec7t v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a v\u1eadt li\u1ec7u Rogers khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh v\u1eadt li\u1ec7u n\u1ec1n l\u00fd t\u01b0\u1edfng. \u0110\u1ed9 tin c\u1eady v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a n\u00f3 trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111\u00f2i h\u1ecfi kh\u1eaft khe khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean c\u1ee7a c\u00e1c k\u1ef9 s\u01b0 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, b\u1ea3o v\u1ec7 s\u1ef1 th\u00e0nh c\u00f4ng c\u1ee7a <strong>nhi\u1ec7m v\u1ee5 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 quan tr\u1ecdng<\/strong>.<\/p>\n<h2>So s\u00e1nh v\u1eadt li\u1ec7u Polyimide v\u00e0 PTFE<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/material_comparison_analysis_conducted.jpg\" alt=\"ph\u00e2n t\u00edch so s\u00e1nh v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Trong l\u0129nh v\u1ef1c PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, ch\u1ea5t n\u1ec1n Polyimide v\u00e0 PTFE n\u1ed5i l\u00ean nh\u01b0 hai \u0111\u1ed1i th\u1ee7 n\u1ed5i b\u1eadt, m\u1ed7i ch\u1ea5t n\u1ec1n \u0111\u1ec1u c\u00f3 nh\u1eefng th\u1ebf m\u1ea1nh ri\u00eang \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u thi\u1ebft k\u1ebf ri\u00eang bi\u1ec7t. Khi l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n, vi\u1ec7c hi\u1ec3u r\u00f5 \u01b0u \u0111i\u1ec3m c\u1ee7a t\u1eebng lo\u1ea1i l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t cao nh\u1ea5t.<\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa ch\u1ea5t n\u1ec1n Polyimide v\u00e0 PTFE:<\/p>\n<ol>\n<li><strong>T\u00ednh ch\u1ea5t \u0111i\u1ec7n<\/strong>: Polyimide cung c\u1ea5p c\u00e1c \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n \u0111\u1eb7c bi\u1ec7t, kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 h\u00f3a ch\u1ea5t, khi\u1ebfn n\u00f3 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/li>\n<li><strong>\u0110\u1eb7c t\u00ednh nhi\u1ec7t<\/strong>: Ch\u1ea5t n\u1ec1n PTFE v\u01b0\u1ee3t tr\u1ed9i trong c\u00e1c \u1ee9ng d\u1ee5ng t\u1ea7n s\u1ed1 cao nh\u1edd ti\u1ebfp tuy\u1ebfn t\u1ed5n th\u1ea5t th\u1ea5p v\u00e0 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i \u1ed5n \u0111\u1ecbnh, khi\u1ebfn ch\u00fang ph\u00f9 h\u1ee3p v\u1edbi PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 hi\u1ec7u su\u1ea5t cao.<\/li>\n<li><strong>T\u00ednh linh ho\u1ea1t v\u00e0 s\u1ee9c m\u1ea1nh<\/strong>: Ch\u1ea5t n\u1ec1n polyimide th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong PCB linh ho\u1ea1t do t\u00ednh linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng cong v\u00eanh, trong khi ch\u1ea5t n\u1ec1n PTFE c\u00f3 \u0111\u1ed9 b\u1ec1n v\u1eadt l\u00fd cao.<\/li>\n<\/ol>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa ch\u1ea5t n\u1ec1n Polyimide v\u00e0 PTFE t\u00f9y thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a thi\u1ebft k\u1ebf PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, v\u1edbi m\u1ed7i v\u1eadt li\u1ec7u mang l\u1ea1i nh\u1eefng l\u1ee3i \u00edch ri\u00eang cho c\u00e1c \u1ee9ng d\u1ee5ng hi\u1ec7u su\u1ea5t cao. B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 \u0111i\u1ec3m m\u1ea1nh c\u1ee7a t\u1eebng v\u1eadt li\u1ec7u n\u1ec1n, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t cao nh\u1ea5t trong m\u00f4i tr\u01b0\u1eddng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u0111\u00f2i h\u1ecfi kh\u1eaft khe.<\/p>\n<h2>L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/aerospace_pcb_substrate_materials.jpg\" alt=\"v\u1eadt li\u1ec7u n\u1ec1n pcb h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Khi l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n cho <strong>PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/strong>, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf ph\u1ea3i xem x\u00e9t c\u1ea9n th\u1eadn c\u00e1c nhu c\u1ea7u \u0111\u1eb7c bi\u1ec7t c\u1ee7a l\u0129nh v\u1ef1c n\u00e0y, \u01b0u ti\u00ean c\u00e1c v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c <strong>nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111oan<\/strong>, b\u1ee9c x\u1ea1 v\u00e0 rung \u0111\u1ed9ng.<\/p>\n<p>PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 y\u00eau c\u1ea7u v\u1eadt li\u1ec7u n\u1ec1n c\u00f3 <strong>\u0111\u1ed9 d\u1eabn nhi\u1ec7t cao<\/strong> v\u00e0 xu\u1ea5t s\u1eafc <strong>t\u00ednh ch\u1ea5t \u0111i\u1ec7n m\u00f4i<\/strong> ch\u1ecbu \u0111\u01b0\u1ee3c c\u1ef1c \u0111\u1ed9 <strong>\u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng<\/strong>. C\u00e1c v\u1eadt li\u1ec7u nh\u01b0 Nh\u00f4m, Nh\u00f4m nitrit v\u00e0 oxit Beryllium th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00ec nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng cao v\u00e0 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf th\u1ea5p.<\/p>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 l\u00e0 r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed trong m\u00e1y bay v\u00e0 ph\u01b0\u01a1ng ti\u1ec7n kh\u00f4ng gian. Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y c\u0169ng ph\u1ea3i th\u1ec3 hi\u1ec7n s\u1ef1 m\u1ea1nh m\u1ebd <strong>\u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc<\/strong> V\u00e0 <strong>t\u00ednh ch\u1ea5t \u0111i\u1ec7n<\/strong> nh\u1eb1m \u0111\u00e1p \u1ee9ng nh\u1eefng y\u00eau c\u1ea7u kh\u1eaft khe c\u1ee7a ng\u00e0nh h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 thi\u1ebft y\u1ebfu \u0111\u1ed1i v\u1edbi ch\u1ee9c n\u0103ng t\u1ed5ng th\u1ec3 v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eed trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5. B\u1eb1ng c\u00e1ch l\u1ef1a ch\u1ecdn c\u1ea9n th\u1eadn v\u1eadt li\u1ec7u n\u1ec1n ph\u00f9 h\u1ee3p, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, cu\u1ed1i c\u00f9ng g\u00f3p ph\u1ea7n v\u00e0o s\u1ef1 th\u00e0nh c\u00f4ng c\u1ee7a c\u00e1c d\u1ef1 \u00e1n quan tr\u1ecdng. <strong>nhi\u1ec7m v\u1ee5 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/strong>.<\/p>\n<h2>V\u1eadt li\u1ec7u n\u1ec1n cho \u0111\u1ed9 tin c\u1eady cao<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/choosing_reliable_substrate_materials.jpg\" alt=\"l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n \u0111\u00e1ng tin c\u1eady\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Khi l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n cho <strong>\u0111\u1ed9 tin c\u1eady cao<\/strong> PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i xem x\u00e9t c\u00e1c ti\u00eau ch\u00ed quan tr\u1ecdng \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n cao nh\u1ea5t.<\/p>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n c\u00f3 t\u00e1c \u0111\u1ed9ng r\u1ea5t l\u1edbn <strong>qu\u1ea3n l\u00fd nhi\u1ec7t<\/strong>, v\u00ec c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 c\u1ef1c cao v\u00e0 m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng cao.<\/p>\n<h3>Ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u<\/h3>\n<p>Vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u0111\u00f2i h\u1ecfi ph\u1ea3i \u0111\u00e1nh gi\u00e1 c\u1ea9n th\u1eadn c\u00e1c ti\u00eau ch\u00ed hi\u1ec7u su\u1ea5t nhi\u1ec7t, c\u01a1 v\u00e0 \u0111i\u1ec7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng c\u00f3 \u0111\u1ed9 tin c\u1eady cao trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p>\n<p>Ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u01b0u ti\u00ean \u0111\u1ed9 tin c\u1eady cao, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t v\u00e0 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c c\u00e1c \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh kh\u1eafc nghi\u1ec7t. C\u00e1c v\u1eadt li\u1ec7u n\u1ec1n nh\u01b0 d\u00f2ng Rogers RO4000 \u0111\u01b0\u1ee3c \u01b0a th\u00edch cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 do t\u00ednh \u1ed5n \u0111\u1ecbnh v\u1ec1 k\u00edch th\u01b0\u1edbc, t\u1ed5n th\u1ea5t th\u1ea5p v\u00e0 hi\u1ec7u su\u1ea5t t\u1ea7n s\u1ed1 cao.<\/p>\n<p>Gi\u00e1 tr\u1ecb Tg cao c\u1ee7a v\u1eadt li\u1ec7u n\u1ec1n \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 n\u01a1i c\u00f3 s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 r\u1ea5t l\u1edbn.<\/p>\n<p>C\u00e1c ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u sau \u0111\u00e2y r\u1ea5t c\u1ea7n thi\u1ebft cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5:<\/p>\n<ol>\n<li><strong>Gi\u00e1 tr\u1ecb Tg cao<\/strong>: \u0110\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t.<\/li>\n<li><strong>H\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m th\u1ea5p<\/strong>: Ng\u0103n ch\u1eb7n s\u1ef1 suy gi\u1ea3m hi\u1ec7u su\u1ea5t trong m\u00f4i tr\u01b0\u1eddng c\u00f3 \u0111\u1ed9 \u1ea9m cao.<\/li>\n<li><strong>\u0110\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc<\/strong>: Ch\u1ecbu \u0111\u01b0\u1ee3c \u1ee9ng su\u1ea5t c\u01a1 h\u1ecdc v\u00e0 \u0111\u1ed9 rung trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/li>\n<\/ol>\n<h3>T\u00f9y ch\u1ecdn qu\u1ea3n l\u00fd nhi\u1ec7t<\/h3>\n<p>Qu\u1ea3n l\u00fd nhi\u1ec7t l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 quan tr\u1ecdng c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t trong <strong>thi\u1ebft k\u1ebf PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/strong>, v\u00ec s\u1ef1 t\u00edch t\u1ee5 nhi\u1ec7t qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u1ecfng linh ki\u1ec7n v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng.<\/p>\n<p>Trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 c\u00f3 \u0111\u1ed9 tin c\u1eady cao, v\u1eadt li\u1ec7u n\u1ec1n \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong <strong>qu\u1ea3n l\u00fd nhi\u1ec7t<\/strong>. C\u00e1c v\u1eadt li\u1ec7u nh\u01b0 Nh\u00f4m, Nh\u00f4m Nitride v\u00e0 Beryllium Oxide cung c\u1ea5p <strong>\u0111\u1ed9 d\u1eabn nhi\u1ec7t cao<\/strong>, \u0111\u1ea3m b\u1ea3o t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3 v\u00e0 duy tr\u00ec hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng cao nh\u1ea5t.<\/p>\n<p>Nh\u1eefng v\u1eadt li\u1ec7u n\u1ec1n n\u00e0y c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 cao <strong>nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng l\u00ean t\u1edbi 350\u00b0C<\/strong>, khi\u1ebfn ch\u00fang tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5. Ngo\u00e0i ra, h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf th\u1ea5p (kho\u1ea3ng 4 ppm\/\u00b0C) \u0111\u1ea3m b\u1ea3o <strong>\u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc d\u01b0\u1edbi \u1ee9ng su\u1ea5t nhi\u1ec7t<\/strong>, gi\u1ea3m thi\u1ec3u nguy c\u01a1 h\u1ecfng h\u00f3c th\u00e0nh ph\u1ea7n.<\/p>\n<p>\u0110\u1eb7c t\u00ednh \u0111i\u1ec7n m\u00f4i m\u1ea1nh c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u n\u00e0y c\u0169ng cho ph\u00e9p truy\u1ec1n nhi\u1ec7t hi\u1ec7u qu\u1ea3, n\u00e2ng cao h\u01a1n n\u1eefa <strong>\u0110\u1ed9 tin c\u1eady h\u1ec7 th\u1ed1ng<\/strong>.<\/p>\n<h2>Qu\u1ea3n l\u00fd nhi\u1ec7t trong PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/cooling_aerospace_pcbs_efficiently.jpg\" alt=\"l\u00e0m m\u00e1t pcbs h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 hi\u1ec7u qu\u1ea3\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>C\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 c\u00f3 \u0111\u1ed9 tin c\u1eady cao \u0111\u00f2i h\u1ecfi ph\u1ea3i qu\u1ea3n l\u00fd nhi\u1ec7t nghi\u00eam ng\u1eb7t trong b\u1ea3ng m\u1ea1ch in (PCB) \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t cao nh\u1ea5t c\u1ee7a c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t. Qu\u1ea3n l\u00fd nhi\u1ec7t hi\u1ec7u qu\u1ea3 l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 tr\u00e1nh t\u00ecnh tr\u1ea1ng qu\u00e1 nhi\u1ec7t, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u1ecfng linh ki\u1ec7n v\u00e0 tr\u1ee5c tr\u1eb7c h\u1ec7 th\u1ed1ng.<\/p>\n<p>\u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd nhi\u1ec7t l\u00fd t\u01b0\u1edfng trong PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, v\u1eadt li\u1ec7u n\u1ec1n c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft. Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y cho ph\u00e9p t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3, ng\u0103n ng\u1eeba s\u1ef1 t\u00edch t\u1ee5 nhi\u1ec7t v\u00e0 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady c\u1ee7a c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed.<\/p>\n<p>Nh\u1eefng c\u00e2n nh\u1eafc ch\u00ednh v\u1ec1 qu\u1ea3n l\u00fd nhi\u1ec7t trong PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 bao g\u1ed3m:<\/p>\n<ol>\n<li><strong>D\u1eabn nhi\u1ec7t<\/strong>: C\u00e1c v\u1eadt li\u1ec7u n\u1ec1n c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao, ch\u1eb3ng h\u1ea1n nh\u01b0 nh\u00f4m nitrit v\u00e0 ch\u1ea5t n\u1ec1n g\u1ed1m, l\u00e0 nh\u1eefng v\u1eadt li\u1ec7u l\u00fd t\u01b0\u1edfng cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/li>\n<li><strong>Nhi\u1ec7t \u0111\u1ed9 cao<\/strong>: PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ph\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t, khi\u1ebfn vi\u1ec7c qu\u1ea3n l\u00fd nhi\u1ec7t tr\u1edf th\u00e0nh \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u.<\/li>\n<li><strong>L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n<\/strong>: Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n ph\u00f9 h\u1ee3p l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o qu\u1ea3n l\u00fd nhi\u1ec7t hi\u1ec7u qu\u1ea3 v\u00e0 hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady c\u1ee7a c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/li>\n<\/ol>\n<h2>Thu\u1ed9c t\u00ednh v\u1eadt li\u1ec7u cho c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/advanced_materials_in_aerospace.jpg\" alt=\"v\u1eadt li\u1ec7u ti\u00ean ti\u1ebfn trong h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u0111\u00f2i h\u1ecfi ph\u1ea3i ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng c\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u c\u1ee7a ch\u00fang, v\u00ec s\u1ef1 k\u1ebft h\u1ee3p t\u1ed1i \u01b0u gi\u1eefa <strong>d\u1eabn nhi\u1ec7t<\/strong>&#44; <strong>\u0111\u1eb7c t\u00ednh \u0111i\u1ec7n m\u00f4i<\/strong>, V\u00e0 <strong>s\u1ee9c m\u1ea1nh c\u01a1 h\u1ecdc<\/strong> l\u00e0 r\u1ea5t quan tr\u1ecdng cho hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady trong <strong>m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t<\/strong>.<\/p>\n<p>V\u1eadt li\u1ec7u n\u1ec1n PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 y\u00eau c\u1ea7u \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao (l\u00ean t\u1edbi 170W\/mK) v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t tuy\u1ec7t v\u1eddi. <strong>t\u00ednh ch\u1ea5t \u0111i\u1ec7n m\u00f4i<\/strong> \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t. <strong>Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<\/strong> c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 350\u00b0C, \u0111\u00f2i h\u1ecfi v\u1eadt li\u1ec7u c\u00f3 nhi\u1ec7t \u0111\u1ed9 th\u1ea5p <strong>h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf<\/strong> (4 ppm\/\u00b0C) \u0111\u1ec3 duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh. C\u00e1c v\u1eadt li\u1ec7u nh\u01b0 Nh\u00f4m, Nh\u00f4m nitrit v\u00e0 oxit Beryllium th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00ec \u0111\u1ed9 b\u1ec1n, t\u00ednh d\u1eabn nhi\u1ec7t v\u00e0 \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n m\u00f4i c\u1ee7a ch\u00fang.<\/p>\n<p>PCB c\u1ee9ng nh\u1eafc linh ho\u1ea1t, k\u1ebft h\u1ee3p c\u00e1c v\u1eadt li\u1ec7u linh ho\u1ea1t v\u00e0 c\u1ee9ng nh\u1eafc nh\u01b0 RO3000 v\u00e0 RO4000, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00ec tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9 v\u00e0 <strong>\u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc<\/strong>.<\/p>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u1ec1n cho PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady, hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111\u1ea7y th\u00e1ch th\u1ee9c nh\u01b0 m\u00e1y bay v\u00e0 h\u1ec7 th\u1ed1ng kh\u00f4ng gian. B\u1eb1ng c\u00e1ch \u0111\u00e1nh gi\u00e1 c\u1ea9n th\u1eadn c\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u, c\u00e1c k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 thi\u1ebft k\u1ebf v\u00e0 ph\u00e1t tri\u1ec3n PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u kh\u1eaft khe c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng n\u00e0y.<\/p>\n<h2>C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 b\u1ea1n ch\u1ecdn m\u1ed9t ch\u1ea5t n\u1ec1n PCB?<\/h3>\n<p>Khi ch\u1ecdn ch\u1ea5t n\u1ec1n PCB, h\u00e3y xem x\u00e9t <strong>m\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng<\/strong> v\u00e0 hi\u1ec7u su\u1ea5t c\u1ea7n thi\u1ebft. \u0110\u00e1nh gi\u00e1 ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m ti\u1ebfp x\u00fac v\u00e0 <strong>c\u0103ng th\u1eb3ng c\u01a1 h\u1ecdc<\/strong> h\u1ed9i \u0111\u1ed3ng qu\u1ea3n tr\u1ecb s\u1ebd g\u1eb7p ph\u1ea3i.<\/p>\n<p>L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t cao, \u0111\u1ed9 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m th\u1ea5p v\u00e0 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc tuy\u1ec7t v\u1eddi. \u01afu ti\u00ean ch\u1ea5t n\u1ec1n c\u00f3 \u0111\u1ed9 b\u1ec1n cao <strong>\u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i<\/strong> v\u00e0 nhi\u1ec7t \u0111\u1ed9 d\u1ecbch chuy\u1ec3n k\u00ednh (Tg) \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t v\u00e0 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t \u0111\u00e1ng tin c\u1eady.<\/p>\n<h3>V\u1eadt li\u1ec7u n\u00e0o th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t n\u1ec1n cho Pcbs?<\/h3>\n<p>Trong l\u0129nh v\u1ef1c b\u1ea3ng m\u1ea1ch in (PCB), v\u1eadt li\u1ec7u n\u1ec1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 <strong>FR4<\/strong>, M\u1ed9t <strong>epoxy ch\u1ed1ng ch\u00e1y<\/strong> ch\u1ea5t n\u1ec1n th\u1ee7y tinh. Vi\u1ec7c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i n\u00f3 l\u00e0 do kh\u1ea3 n\u0103ng chi tr\u1ea3, t\u00ednh linh ho\u1ea1t v\u00e0 <strong>gi\u00e1 tr\u1ecb Tg cao<\/strong>.<\/p>\n<p>C\u00e1c \u0111\u1eb7c t\u00ednh c\u00e2n b\u1eb1ng c\u1ee7a FR4 khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau, cung c\u1ea5p gi\u1ea3i ph\u00e1p \u0111\u00e1ng tin c\u1eady v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed cho s\u1ea3n xu\u1ea5t PCB.<\/p>\n<h3>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 b\u1ea1n ch\u1ecdn m\u1ed9t v\u1eadt li\u1ec7u PCB?<\/h3>\n<p>&#39;<strong>\u0110o hai l\u1ea7n<\/strong>, c\u1eaft m\u1ed9t l\u1ea7n&#039; l\u00e0 m\u1ed9t c\u00e2u ng\u1ea1n ng\u1eef v\u01b0\u1ee3t th\u1eddi gian, \u0111\u1eb7c bi\u1ec7t \u0111\u00fang khi ch\u1ecdn m\u1ed9t <strong>v\u1eadt li\u1ec7u PCB<\/strong>. Khi ch\u1ecdn v\u1eadt li\u1ec7u PCB, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i t\u00ednh \u0111\u1ebfn ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng, \u0111\u1ed9 d\u1eabn nhi\u1ec7t, t\u00ednh ch\u1ea5t \u0111i\u1ec7n m\u00f4i, tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc.<\/p>\n<h3>Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho Pcbs?<\/h3>\n<p>Khi l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u cho b\u1ea3ng m\u1ea1ch in (PCB), c\u00f3 m\u1ed9t s\u1ed1 t\u00f9y ch\u1ecdn. <strong>FR4<\/strong>, CEM, Teflon, <strong>Polyimide<\/strong>, V\u00e0 <strong>Rogers<\/strong> l\u00e0 nh\u1eefng v\u1eadt li\u1ec7u n\u1ec1n ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t PCB.<\/p>\n<p>M\u1ed7i v\u1eadt li\u1ec7u cung c\u1ea5p c\u00e1c \u0111\u1eb7c t\u00ednh ri\u00eang, ch\u1eb3ng h\u1ea1n nh\u01b0 ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9, \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n v\u00e0 kh\u1ea3 n\u0103ng kh\u00e1ng h\u00f3a ch\u1ea5t. Hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1c \u0111\u1eb7c t\u00ednh n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft trong vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u t\u1ed1t nh\u1ea5t cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n \u0111\u00e1ng tin c\u1eady trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111\u00f2i h\u1ecfi kh\u1eaft khe.<\/p>","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c t\u00ecm ra v\u1eadt li\u1ec7u n\u1ec1n ho\u00e0n h\u1ea3o l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng \u0111\u1ed1i v\u1edbi PCB h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, nh\u01b0ng c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf n\u00ean xem x\u00e9t nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u?<\/p>","protected":false},"author":9,"featured_media":2035,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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Lau","author_link":"https:\/\/tryvary.com\/vi\/author\/wsbpmbzuog4q\/"},"uagb_comment_info":0,"uagb_excerpt":"Finding the perfect substrate material is crucial for aerospace PCBs&#44; but what factors should designers consider to ensure optimal 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