{"id":114179,"date":"2021-11-19T15:04:31","date_gmt":"2021-11-19T07:04:31","guid":{"rendered":"https:\/\/www.alpapowder.com\/114179\/"},"modified":"2021-11-19T15:04:31","modified_gmt":"2021-11-19T07:04:31","slug":"ung-dung-cong-nghe-che-bien-va-phat-trien-bot-silic","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/114179\/","title":{"rendered":"\u1ee8ng d\u1ee5ng, c\u00f4ng ngh\u1ec7 ch\u1ebf bi\u1ebfn v\u00e0 ph\u00e1t tri\u1ec3n b\u1ed9t silic"},"content":{"rendered":"
B\u1ed9t silica \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb th\u1ea1ch anh t\u1ef1 nhi\u00ean (SiO2<\/sub>) ho\u1eb7c th\u1ea1ch anh nung ch\u1ea3y (SiO2 <\/sub>v\u00f4 \u0111\u1ecbnh h\u00ecnh sau khi nung ch\u1ea3y \u1edf nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 l\u00e0m ngu\u1ed9i th\u1ea1ch anh t\u1ef1 nhi\u00ean), \u0111\u01b0\u1ee3c nghi\u1ec1n, nghi\u1ec1n bi (ho\u1eb7c rung, m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c), tuy\u1ec3n n\u1ed5i, t\u1ea9y r\u1eeda, n\u01b0\u1edbc tinh khi\u1ebft cao x\u1eed l\u00fd, vv. Ch\u1ebf bi\u1ebfn th\u00e0nh b\u1ed9t vi m\u00f4.<\/p>\n Silicon<\/a> micropowder l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u phi kim lo\u1ea1i, kh\u00f4ng m\u00f9i, kh\u00f4ng \u0111\u1ed9c h\u1ea1i v\u00e0 kh\u00f4ng g\u00e2y \u00f4 nhi\u1ec5m. N\u00f3 c\u00f3 \u01b0u \u0111i\u1ec3m l\u00e0 \u0111\u1ed9 c\u1ee9ng cao, \u0111\u1ed9 d\u1eabn nhi\u1ec7t th\u1ea5p, ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 cao, c\u00e1ch nhi\u1ec7t v\u00e0 t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc \u1ed5n \u0111\u1ecbnh.<\/p>\n Theo m\u1ee9c \u0111\u1ed9 c\u1ee7a b\u1ed9t silicon<\/a>, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh: b\u1ed9t silicon th\u00f4ng th\u01b0\u1eddng, b\u1ed9t silicon c\u1ea5p \u0111i\u1ec7n, b\u1ed9t silicon nung ch\u1ea3y, b\u1ed9t silicon si\u00eau m\u1ecbn, b\u1ed9t silicon h\u00ecnh c\u1ea7u. Theo m\u1ee5c \u0111\u00edch, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh: b\u1ed9t silicon<\/a> m\u1ecbn cho s\u01a1n v\u00e0 ch\u1ea5t ph\u1ee7, b\u1ed9t silicon m\u1ecbn cho s\u00e0n epoxy, b\u1ed9t silicon m\u1ecbn cho cao su, b\u1ed9t silicon m\u1ecbn cho ch\u1ea5t b\u1ecbt k\u00edn, b\u1ed9t silicon m\u1ecbn cho nh\u1ef1a \u0111i\u1ec7n t\u1eed v\u00e0 \u0111i\u1ec7n, v\u00e0 b\u1ed9t m\u1ecbn b\u1ed9t silicon d\u00f9ng cho g\u1ed1m s\u1ee9 ch\u00ednh x\u00e1c. Theo quy tr\u00ecnh s\u1ea3n xu\u1ea5t, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh: b\u1ed9t k\u1ebft tinh, b\u1ed9t cristobalit, b\u1ed9t nung ch\u1ea3y v\u00e0 c\u00e1c lo\u1ea1i b\u1ed9t ho\u1ea1t t\u00ednh kh\u00e1c nhau.<\/p>\n Theo c\u00e1c c\u1ea5p ch\u1ea5t l\u01b0\u1ee3ng kh\u00e1c nhau, b\u1ed9t microsilica c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t cao su, nh\u1ef1a, s\u01a1n cao c\u1ea5p, ch\u1ea5t ph\u1ee7, v\u1eadt li\u1ec7u ch\u1ecbu l\u1eeda, c\u00e1ch \u0111i\u1ec7n, bao b\u00ec \u0111i\u1ec7n t\u1eed, g\u1ed1m s\u1ee9 cao c\u1ea5p, \u0111\u00fac ch\u00ednh x\u00e1c, v.v.<\/p>\n B\u1ed9t silicon<\/a> th\u00f4ng th\u01b0\u1eddng ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho s\u01a1n \u0111\u00fac nh\u1ef1a epoxy, v\u1eadt li\u1ec7u l\u00e0m b\u1ea7u, l\u1edbp b\u1ea3o v\u1ec7 que h\u00e0n, \u0111\u00fac kim lo\u1ea1i, g\u1ed1m s\u1ee9, cao su silicone, s\u01a1n th\u00f4ng th\u01b0\u1eddng, ch\u1ea5t ph\u1ee7 v\u00e0 c\u00e1c ch\u1ea5t \u0111\u1ed9n ng\u00e0nh h\u00f3a ch\u1ea5t kh\u00e1c. B\u1ed9t silicon<\/a> c\u1ea5p \u0111i\u1ec7n ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00fac c\u00e1ch \u0111i\u1ec7n cho c\u00e1c thi\u1ebft b\u1ecb v\u00e0 linh ki\u1ec7n \u0111i\u1ec7n th\u00f4ng th\u01b0\u1eddng, \u0111\u00fac c\u00e1ch \u0111i\u1ec7n cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n cao \u00e1p, APG (c\u00f4ng ngh\u1ec7 \u0111\u00fac gel \u00e1p l\u1ef1c nh\u1ef1a epoxy t\u1ef1 \u0111\u1ed9ng) trong quy tr\u00ecnh v\u1eadt li\u1ec7u phun, b\u1ea7u epoxy v\u00e0 c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p men s\u1ee9 cao c\u1ea5p.<\/p>\n Y\u00eau c\u1ea7u v\u1ec1 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t b\u1ed9t silicon<\/a> c\u1ea5p \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n t\u1eed<\/p>\n\u1ee8ng d\u1ee5ng c\u1ee7a b\u1ed9t silicon<\/h4>\n