{"id":700483,"date":"2024-10-29T22:59:20","date_gmt":"2024-10-29T21:59:20","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=700483"},"modified":"2024-10-29T22:59:20","modified_gmt":"2024-10-29T21:59:20","slug":"vat-lieu-giao-dien-nhiet-cho-thiet-bi-dien-tu","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/vat-lieu-giao-dien-nhiet-cho-thiet-bi-dien-tu\/","title":{"rendered":"V\u1eadt li\u1ec7u giao di\u1ec7n nhi\u1ec7t cho thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed"},"content":{"rendered":"<p class=\"sidekick\">V\u1eadt li\u1ec7u giao di\u1ec7n nhi\u1ec7t cho thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed gi\u00fap c\u1ea3i thi\u1ec7n t\u1ea3n nhi\u1ec7t, n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb trong m\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng cao.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/vat_lieu_giao_dien_nhiet_cho_thiet_bi_dien_tu.png\" alt=\"V\u1eadt li\u1ec7u giao di\u1ec7n nhi\u1ec7t cho thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>V\u1eadt li\u1ec7u giao di\u1ec7n nhi\u1ec7t cho thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed<\/h2>\n<p>Trong c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a thi\u1ebft b\u1ecb. V\u00ec l\u00fd do n\u00e0y, v\u1eadt li\u1ec7u giao di\u1ec7n nhi\u1ec7t (TIM &#8211; Thermal Interface Materials) \u0111\u00f3ng m\u1ed9t vai tr\u00f2 c\u1ef1c k\u1ef3 quan tr\u1ecdng. H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u chi ti\u1ebft v\u1ec1 c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u n\u00e0y v\u00e0 c\u00e1ch ch\u00fang ho\u1ea1t \u0111\u1ed9ng trong h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed.<\/p>\n<h2>Vai tr\u00f2 c\u1ee7a v\u1eadt li\u1ec7u giao di\u1ec7n nhi\u1ec7t<\/h2>\n<p>Khi c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed ho\u1ea1t \u0111\u1ed9ng, ch\u00fang t\u1ea1o ra nhi\u1ec7t. N\u1ebfu nhi\u1ec7t \u0111\u1ed9 c\u1ee7a ch\u00fang v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n, hi\u1ec7u su\u1ea5t l\u00e0m vi\u1ec7c s\u1ebd gi\u1ea3m v\u00e0 th\u1eadm ch\u00ed c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u01b0 h\u1ecfng. V\u1eadt li\u1ec7u giao di\u1ec7n nhi\u1ec7t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u1ea5p \u0111\u1ea7y c\u00e1c kho\u1ea3ng tr\u1ed1ng nh\u1ecf gi\u1eefa linh ki\u1ec7n v\u00e0 t\u1ea3n nhi\u1ec7t, gi\u00fap t\u1ed1i \u01b0u h\u00f3a qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t.<\/p>\n<h2>C\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u giao di\u1ec7n nhi\u1ec7t ph\u1ed5 bi\u1ebfn<\/h2>\n<p><u1><\/p>\n<li>Ch\u1ea5t b\u00f4i tr\u01a1n nhi\u1ec7t<\/li>\n<li>Pad nhi\u1ec7t<\/li>\n<li>B\u0103ng nhi\u1ec7t<\/li>\n<li>Keo d\u00e1n nhi\u1ec7t<\/li>\n<p><\/u1><\/p>\n<h2>Ch\u1ea5t b\u00f4i tr\u01a1n nhi\u1ec7t<\/h2>\n<p>Ch\u1ea5t b\u00f4i tr\u01a1n nhi\u1ec7t (Thermal paste) l\u00e0 lo\u1ea1i v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn nh\u1ea5t. N\u00f3 bao g\u1ed3m c\u00e1c h\u1ea1t kim lo\u1ea1i ho\u1eb7c g\u1ed1m m\u1ecbn trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng ch\u1ea5t l\u1ecfng. Ch\u1ea5t b\u00f4i tr\u01a1n c\u00f3 kh\u1ea3 n\u0103ng truy\u1ec1n nhi\u1ec7t cao nh\u1edd v\u00e0o t\u00ednh linh ho\u1ea1t c\u1ee7a n\u00f3, cho ph\u00e9p l\u1ea5p \u0111\u1ea7y ho\u00e0n to\u00e0n c\u00e1c khe h\u1edf vi m\u00f4 gi\u1eefa b\u1ec1 m\u1eb7t c\u1ee7a linh ki\u1ec7n v\u00e0 t\u1ea3n nhi\u1ec7t.<\/p>\n<h2>Pad nhi\u1ec7t<\/h2>\n<p>Pad nhi\u1ec7t (Thermal pad) l\u00e0 c\u00e1c mi\u1ebfng v\u1eadt li\u1ec7u m\u1ec1m, th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb silicone, c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng \u00e1p d\u1ee5ng l\u00ean b\u1ec1 m\u1eb7t c\u1ea7n t\u1ea3n nhi\u1ec7t. Lo\u1ea1i v\u1eadt li\u1ec7u n\u00e0y th\u01b0\u1eddng d\u1ec5 s\u1eed d\u1ee5ng v\u00e0 \u00edt g\u00e2y l\u1ed9n x\u1ed9n h\u01a1n so v\u1edbi ch\u1ea5t b\u00f4i tr\u01a1n nhi\u1ec7t, nh\u01b0ng hi\u1ec7u qu\u1ea3 truy\u1ec1n nhi\u1ec7t c\u1ee7a n\u00f3 th\u01b0\u1eddng th\u1ea5p h\u01a1n.<\/p>\n<h2>B\u0103ng nhi\u1ec7t<\/h2>\n<p>B\u0103ng nhi\u1ec7t (Thermal tape) l\u00e0 m\u1ed9t d\u1ea3i m\u1ecfng g\u1ed3m hai l\u1edbp keo c\u00f3 kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t. Ch\u00fang r\u1ea5t ti\u1ec7n l\u1ee3i \u0111\u1ec3 s\u1eed d\u1ee5ng khi c\u1ea7n d\u00e1n tr\u1ef1c ti\u1ebfp c\u00e1c linh ki\u1ec7n nh\u1ecf l\u00ean t\u1ea3n nhi\u1ec7t m\u00e0 kh\u00f4ng c\u1ea7n s\u1eed d\u1ee5ng th\u00eam c\u00e1c ch\u1ea5t d\u00ednh kh\u00e1c.<\/p>\n<h2>Keo d\u00e1n nhi\u1ec7t<\/h2>\n<p>Keo d\u00e1n nhi\u1ec7t (Thermal adhesive) c\u00f3 t\u00ednh ch\u1ea5t gi\u1ed1ng nh\u01b0 ch\u1ea5t b\u00f4i tr\u01a1n nhi\u1ec7t nh\u01b0ng c\u00f3 kh\u1ea3 n\u0103ng d\u00ednh ch\u1eb7t hai b\u1ec1 m\u1eb7t v\u1edbi nhau. Lo\u1ea1i v\u1eadt li\u1ec7u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi c\u1ea7n k\u1ebft d\u00ednh linh ki\u1ec7n nh\u1ecf m\u00e0 kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng \u1ed1c ho\u1eb7c c\u00e1c ph\u01b0\u01a1ng ph\u00e1p c\u01a1 h\u1ecdc kh\u00e1c.<\/p>\n<h2>T\u00ednh hi\u1ec7u qu\u1ea3 c\u1ee7a v\u1eadt li\u1ec7u giao di\u1ec7n nhi\u1ec7t<\/h2>\n<p>T\u00ednh hi\u1ec7u qu\u1ea3 c\u1ee7a v\u1eadt li\u1ec7u giao di\u1ec7n nhi\u1ec7t ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0:<\/p>\n<p><o1><\/p>\n<li><b>\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n nhi\u1ec7t (Thermal conductivity):<\/b> Kh\u1ea3 n\u0103ng truy\u1ec1n nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u, th\u01b0\u1eddng \u0111o b\u1eb1ng W\/mK (watts per meter kelvin).<\/li>\n<li><b>\u0110\u1ed9 \u0111\u1eb7c qu\u00e1nh (Viscosity):<\/b> \u0110\u1ed9 linh ho\u1ea1t c\u1ee7a ch\u1ea5t b\u00f4i tr\u01a1n nhi\u1ec7t, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng l\u1ea5p \u0111\u1ea7y c\u00e1c khe h\u1edf.<\/li>\n<li><b>\u0110\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc (Mechanical strength):<\/b> Kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c v\u00e0 duy tr\u00ec tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng d\u00e0i h\u1ea1n.<\/li>\n<p><\/o1><\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>V\u1eadt li\u1ec7u giao di\u1ec7n nhi\u1ec7t l\u00e0 y\u1ebfu t\u1ed1 kh\u00f4ng th\u1ec3 thi\u1ebfu trong thi\u1ebft k\u1ebf v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t cho thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed. Vi\u1ec7c l\u1ef1a ch\u1ecdn lo\u1ea1i v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p s\u1ebd gi\u00fap t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u qu\u1ea3 truy\u1ec1n nhi\u1ec7t, n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o v\u1ec7 linh ki\u1ec7n \u0111i\u1ec7n t\u1eed trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>V\u1eadt li\u1ec7u giao di\u1ec7n nhi\u1ec7t cho thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed gi\u00fap c\u1ea3i thi\u1ec7n t\u1ea3n nhi\u1ec7t, n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb trong m\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng cao.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - 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