{"id":122050,"date":"2022-12-05T13:57:25","date_gmt":"2022-12-05T05:57:25","guid":{"rendered":"https:\/\/www.alpapowder.com\/122050\/"},"modified":"2022-12-05T13:57:26","modified_gmt":"2022-12-05T05:57:26","slug":"bot-silica-tai-sao-gia-bot-hinh-cau-lai-dat-nhu-vay","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/122050\/","title":{"rendered":"B\u1ed9t silica, t\u1ea1i sao gi\u00e1 b\u1ed9t h\u00ecnh c\u1ea7u l\u1ea1i \u0111\u1eaft nh\u01b0 v\u1eady?"},"content":{"rendered":"
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B\u1ed9t silic c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh b\u1ed9t silic g\u00f3c v\u00e0 b\u1ed9t silic h\u00ecnh c\u1ea7u theo h\u00ecnh d\u1ea1ng h\u1ea1t, v\u00e0 b\u1ed9t silic g\u00f3c c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh b\u1ed9t silic tinh th\u1ec3 v\u00e0 b\u1ed9t silic nung ch\u1ea3y theo c\u00e1c lo\u1ea1i nguy\u00ean li\u1ec7u th\u00f4 kh\u00e1c nhau.<\/p>\n
B\u1ed9t silic tinh th\u1ec3 l\u00e0 v\u1eadt li\u1ec7u b\u1ed9t silic \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb kh\u1ed1i th\u1ea1ch anh, c\u00e1t th\u1ea1ch anh, v.v., sau khi nghi\u1ec1n, ph\u00e2n lo\u1ea1i ch\u00ednh x\u00e1c, lo\u1ea1i b\u1ecf t\u1ea1p ch\u1ea5t v\u00e0 c\u00e1c quy tr\u00ecnh kh\u00e1c. C\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd nh\u01b0 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf tuy\u1ebfn t\u00ednh v\u00e0 t\u00ednh ch\u1ea5t \u0111i\u1ec7n c\u1ee7a s\u1ea3n ph\u1ea9m.<\/p>\n
B\u1ed9t silica<\/a> nung ch\u1ea3y \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb silica nung ch\u1ea3y, th\u1ee7y tinh v\u00e0 c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c l\u00e0m nguy\u00ean li\u1ec7u ch\u00ednh, v\u00e0 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t th\u00f4ng qua qu\u00e1 tr\u00ecnh nghi\u1ec1n, ph\u00e2n lo\u1ea1i ch\u00ednh x\u00e1c v\u00e0 lo\u1ea1i b\u1ecf t\u1ea1p ch\u1ea5t, v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a n\u00f3 t\u1ed1t h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi b\u1ed9t silica k\u1ebft tinh.<\/p>\n B\u1ed9t silica<\/a> h\u00ecnh c\u1ea7u \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb b\u1ed9t silica g\u00f3c \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0m nguy\u00ean li\u1ec7u th\u00f4 v\u00e0 \u0111\u01b0\u1ee3c ch\u1ebf bi\u1ebfn th\u00e0nh v\u1eadt li\u1ec7u b\u1ed9t silica h\u00ecnh c\u1ea7u b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ng\u1ecdn l\u1eeda. N\u00f3 c\u00f3 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m tuy\u1ec7t v\u1eddi nh\u01b0 t\u00ednh l\u01b0u \u0111\u1ed9ng t\u1ed1t, \u1ee9ng su\u1ea5t th\u1ea5p, di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang nh\u1ecf v\u00e0 m\u1eadt \u0111\u1ed9 kh\u1ed1i cao. N\u00f3 l\u00e0 m\u1ed9t s\u1ea3n ph\u1ea9m cao c\u1ea5p h\u1ea1 l\u01b0u. s L\u1ef1a ch\u1ecdn.<\/p>\n L\u00e0 m\u1ed9t v\u1eadt li\u1ec7u l\u00e0m \u0111\u1ea7y, b\u1ed9t silica h\u00ecnh c\u1ea7u c\u00f3 hi\u1ec7u su\u1ea5t t\u1ed1t h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 t\u1ed1t h\u01a1n so v\u1edbi b\u1ed9t silica k\u1ebft tinh v\u00e0 b\u1ed9t silica nung ch\u1ea3y; t\u1ef7 l\u1ec7 l\u1ea5p \u0111\u1ea7y cao h\u01a1n c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf tuy\u1ebfn t\u00ednh c\u1ee7a c\u00e1c l\u1edbp ph\u1ee7 \u0111\u1ed3ng v\u00e0 h\u1ee3p ch\u1ea5t \u0111\u00fac epoxy, v\u00e0 hi\u1ec7u su\u1ea5t gi\u00e3n n\u1edf g\u1ea7n b\u1eb1ng v\u1edbi silicon<\/a> \u0111\u01a1n tinh th\u1ec3, do \u0111\u00f3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 tin c\u1eady c\u1ee7a c\u00e1c s\u1ea3n ph\u1ea9m \u0111i\u1ec7n t\u1eed; h\u1ee3p ch\u1ea5t \u0111\u00fac epoxy s\u1eed d\u1ee5ng micropowder silicon h\u00ecnh c\u1ea7u c\u00f3 n\u1ed3ng \u0111\u1ed9 \u1ee9ng su\u1ea5t th\u1ea5p v\u00e0 \u0111\u1ed9 b\u1ec1n cao, ph\u00f9 h\u1ee3p h\u01a1n cho vi\u1ec7c \u0111\u00f3ng g\u00f3i chip b\u00e1n d\u1eabn; n\u00f3 c\u00f3 t\u00ednh l\u01b0u \u0111\u1ed9ng t\u1ed1t h\u01a1n v\u00e0 c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 s\u1ef1 hao m\u00f2n tr\u00ean thi\u1ebft b\u1ecb v\u00e0 khu\u00f4n m\u1eabu. Do \u0111\u00f3, b\u1ed9t silica<\/a> h\u00ecnh c\u1ea7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c b\u1ea3ng PCB cao c\u1ea5p, c\u00e1c h\u1ee3p ch\u1ea5t \u0111\u00fac epoxy cho c\u00e1c m\u1ea1ch t\u00edch h\u1ee3p quy m\u00f4 l\u1edbn, l\u1edbp ph\u1ee7 cao c\u1ea5p v\u00e0 g\u1ed1m s\u1ee9 \u0111\u1eb7c bi\u1ec7t.<\/p>\n