{"id":118596,"date":"2022-08-31T10:12:37","date_gmt":"2022-08-31T02:12:37","guid":{"rendered":"https:\/\/www.alpapowder.com\/118596\/"},"modified":"2022-09-01T10:44:33","modified_gmt":"2022-09-01T02:44:33","slug":"ung-dung-cua-7-loai-vat-lieu-bot-nano-trong-cao-su-silicone-long","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/118596\/","title":{"rendered":"\u1ee8ng d\u1ee5ng c\u1ee7a 7 lo\u1ea1i v\u1eadt li\u1ec7u b\u1ed9t nano trong cao su silicone l\u1ecfng"},"content":{"rendered":"
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Cao su silicone l\u1ecfng ch\u1ee7 y\u1ebfu bao g\u1ed3m c\u00e1c polyme c\u01a1 b\u1ea3n, ch\u1ea5t \u0111\u1ed9n t\u0103ng c\u01b0\u1eddng, ch\u1ea5t li\u00ean k\u1ebft ngang v\u00e0 c\u00e1c ch\u1ea5t tr\u1ee3 kh\u00e1c nhau theo m\u1ed9t t\u1ef7 l\u1ec7 nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 \u0111i\u1ec1u ch\u1ebf cao su c\u01a1 b\u1ea3n c\u00f3 kh\u1ea3 n\u0103ng t\u1ef1 san ph\u1eb3ng v\u00e0 thixotropy, sau \u0111\u00f3 tr\u1ed9n v\u1edbi kh\u00f4ng kh\u00ed \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng ho\u1eb7c trong \u0111i\u1ec1u ki\u1ec7n gia nhi\u1ec7t. Ch\u1ea5t \u0111\u00e0n h\u1ed3i h\u00ecnh th\u00e0nh do ti\u1ebfp x\u00fac v\u1edbi h\u01a1i \u1ea9m trong ho\u1eb7c v\u1edbi c\u00e1c ch\u1ea5t li\u00ean k\u1ebft ngang.<\/p>\n
V\u00ec c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 l\u00fd c\u1ee7a cao su silicone l\u1ecfng nguy\u00ean ch\u1ea5t r\u1ea5t k\u00e9m n\u00ean th\u01b0\u1eddng c\u1ea7n \u0111\u01b0\u1ee3c gia c\u1ed1 v\u00e0 s\u1eeda \u0111\u1ed5i \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf. Trong s\u1ed1 \u0111\u00f3, th\u00eam ch\u1ea5t \u0111\u1ed9n gia c\u1ed1 ch\u1eafc ch\u1eafn l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ng\u1eafn g\u1ecdn v\u00e0 ti\u1ec7n l\u1ee3i nh\u1ea5t. C\u00e1c ch\u1ea5t \u0111\u1ed9n nano th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 nano-silica, nano canxi cacbonat, montmorillonite<\/a> h\u1eefu c\u01a1, \u1ed1ng nano cacbon v\u00e0 graphene, nano k\u1ebdm oxit, nano titan dioxit, silic cacbua, nh\u00f4m oxit v\u00e0 d\u00e2y nano b\u1ea1c.<\/p>\n 1. Nano silica<\/p>\n C\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed5ng h\u1ee3p nano-silica ch\u1ee7 y\u1ebfu d\u1ef1a tr\u00ean ph\u01b0\u01a1ng ph\u00e1p pha kh\u00ed v\u00e0 ph\u01b0\u01a1ng ph\u00e1p k\u1ebft t\u1ee7a. Nano-silica \u0111i\u1ec1u ch\u1ebf b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p pha kh\u00ed c\u00f3 \u00edt nh\u00f3m hydroxyl b\u1ec1 m\u1eb7t, k\u00edch th\u01b0\u1edbc h\u1ea1t \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n t\u1ed1t. Zhu Zhimin v\u00e0 c\u1ed9ng s\u1ef1. \u0111\u00e3 s\u1eed d\u1ee5ng silica b\u1ed1c kh\u00f3i l\u00e0m ch\u1ea5t \u0111\u1ed9n gia c\u1ed1 v\u00e0 nh\u1eadn th\u1ea5y r\u1eb1ng sau khi th\u00eam 10 ph\u1ea7n silica, c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd v\u00e0 c\u01a1 h\u1ecdc c\u1ee7a cao su silicone l\u1ecfng \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 v\u00e0 \u0111\u1ed9 c\u1ee9ng, \u0111\u1ed9 b\u1ec1n k\u00e9o v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1eaft c\u1ee7a Shore A c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 40, t\u01b0\u01a1ng \u1ee9ng. , 1.6MPa, 1.4MPa; kh\u00f4ng c\u00f3 s\u1ef1 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 v\u1ec1 \u0111\u1ed9 b\u1ec1n c\u1eaft sau khi l\u00e3o h\u00f3a.<\/p>\n Do chi ph\u00ed c\u1ee7a silica b\u1ed1c kh\u00f3i cao h\u01a1n n\u00ean silica k\u1ebft t\u1ee7a c\u00f3 gi\u00e1 th\u00e0nh th\u1ea5p h\u01a1n \u0111\u01b0\u1ee3c quan t\u00e2m. H\u00e0m l\u01b0\u1ee3ng n\u01b0\u1edbc c\u1ee7a silica k\u1ebft t\u1ee7a cao h\u01a1n v\u00e0 s\u1ed1 l\u01b0\u1ee3ng hydroxyl tr\u00ean b\u1ec1 m\u1eb7t cao h\u01a1n nhi\u1ec1u so v\u1edbi silica b\u1ed1c kh\u00f3i, \u0111i\u1ec1u n\u00e0y l\u00e0m cho ho\u1ea1t t\u00ednh b\u1ec1 m\u1eb7t c\u1ee7a silica k\u1ebft t\u1ee7a r\u1ea5t cao, v\u00e0 n\u00f3 d\u1ec5 k\u1ebft t\u1ee5, kh\u00f4ng c\u00f3 l\u1ee3i cho s\u1ef1 ph\u00e2n t\u00e1n trong ma tr\u1eadn cao su. \u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p v\u1eadt l\u00fd ho\u1eb7c h\u00f3a h\u1ecdc th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a n\u00f3 \u0111\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 k\u1ebft t\u1ee5 v\u00e0 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n c\u1ee7a n\u00f3.<\/p>\n 2. Canxi cacbonat nano<\/p>\n Nano canxi cacbonat c\u00f3 \u01b0u \u0111i\u1ec3m l\u00e0 k\u00edch th\u01b0\u1edbc h\u1ea1t nh\u1ecf, di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang cao, ho\u1ea1t t\u00ednh b\u1ec1 m\u1eb7t cao, l\u01b0\u1ee3ng l\u1ea5p \u0111\u1ea7y l\u1edbn v\u00e0 gia c\u00f4ng thu\u1eadn ti\u1ec7n. , Nano canxi cacbonat \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong cao su silicone l\u1ecfng nh\u01b0 m\u1ed9t ch\u1ea5t \u0111\u1ed9n gia c\u01b0\u1eddng th\u00f4ng th\u01b0\u1eddng.<\/p>\n