{"id":15764,"date":"2024-04-16T08:03:29","date_gmt":"2024-04-16T08:03:29","guid":{"rendered":"http:\/\/quartz-grinding.com\/?p=15764"},"modified":"2024-04-16T08:03:32","modified_gmt":"2024-04-16T08:03:32","slug":"the-surface-modification-effect-of-silica-powder-will-determine-its-quality","status":"publish","type":"post","link":"https:\/\/www.quartz-grinding.com\/vi\/the-surface-modification-effect-of-silica-powder-will-determine-its-quality\/","title":{"rendered":"Hi\u1ec7u \u1ee9ng bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a b\u1ed9t silica s\u1ebd quy\u1ebft \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a n\u00f3"},"content":{"rendered":"

B\u1ea3n th\u00e2n b\u1ed9t silica l\u00e0 m\u1ed9t ch\u1ea5t ph\u00e2n c\u1ef1c v\u00e0 \u01b0a n\u01b0\u1edbc. N\u00f3 c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh giao di\u1ec7n kh\u00e1c v\u1edbi ma tr\u1eadn polymer v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch k\u00e9m. Th\u01b0\u1eddng kh\u00f3 ph\u00e2n t\u00e1n trong v\u1eadt li\u1ec7u n\u1ec1n. V\u00ec v\u1eady, vi\u1ec7c bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a b\u1ed9t silica th\u01b0\u1eddng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u. Thay \u0111\u1ed5i c\u00f3 m\u1ee5c \u0111\u00edch c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd v\u00e0 h\u00f3a h\u1ecdc c\u1ee7a b\u1ec1 m\u1eb7t b\u1ed9t silica theo nhu c\u1ea7u c\u1ee7a \u1ee9ng d\u1ee5ng, t\u1eeb \u0111\u00f3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a n\u00f3 v\u1edbi v\u1eadt li\u1ec7u polymer h\u1eefu c\u01a1 v\u00e0 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 ph\u00e2n t\u00e1n v\u00e0 t\u00ednh l\u01b0u \u0111\u1ed9ng c\u1ee7a n\u00f3 trong v\u1eadt li\u1ec7u polymer.
\u200b
C\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 ch\u1ea5t l\u01b0\u1ee3ng nguy\u00ean li\u1ec7u th\u00f4 c\u1ee7a b\u1ed9t silica, quy tr\u00ecnh bi\u1ebfn t\u00ednh, ph\u01b0\u01a1ng ph\u00e1p bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t v\u00e0 ch\u1ea5t bi\u1ebfn t\u00ednh, li\u1ec1u l\u01b0\u1ee3ng ch\u1ea5t bi\u1ebfn t\u00ednh, \u0111i\u1ec1u ki\u1ec7n qu\u00e1 tr\u00ecnh bi\u1ebfn t\u00ednh (nhi\u1ec7t \u0111\u1ed9 bi\u1ebfn t\u00ednh, th\u1eddi gian, pH v\u00e0 t\u1ed1c \u0111\u1ed9 khu\u1ea5y) \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u \u1ee9ng bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a b\u1ed9t silica. Trong s\u1ed1 \u0111\u00f3, ph\u01b0\u01a1ng ph\u00e1p s\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t v\u00e0 ch\u1ea5t bi\u1ebfn t\u00ednh l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 s\u1eeda \u0111\u1ed5i.<\/p>\n\n\n\n

\"c\u00e1t
c\u00e1t th\u1ea1ch anh<\/figcaption><\/figure>\n\n\n\n

Ch\u1ea5t l\u01b0\u1ee3ng nguy\u00ean li\u1ec7u b\u1ed9t silic<\/h2>\n\n\n\n

Lo\u1ea1i, k\u00edch th\u01b0\u1edbc h\u1ea1t, di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang, nh\u00f3m ch\u1ee9c b\u1ec1 m\u1eb7t v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t kh\u00e1c c\u1ee7a b\u1ed9t silica \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a n\u00f3 v\u1edbi c\u00e1c ch\u1ea5t bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t. Hi\u1ec7u \u1ee9ng bi\u1ebfn \u0111\u1ed5i c\u1ee7a c\u00e1c lo\u1ea1i b\u1ed9t silica kh\u00e1c nhau c\u0169ng kh\u00e1c nhau. Trong s\u1ed1 \u0111\u00f3, b\u1ed9t silica h\u00ecnh c\u1ea7u c\u00f3 t\u00ednh l\u01b0u \u0111\u1ed9ng t\u1ed1t, d\u1ec5 k\u1ebft h\u1ee3p v\u1edbi ch\u1ea5t bi\u1ebfn t\u00ednh trong qu\u00e1 tr\u00ecnh bi\u1ebfn t\u00ednh v\u00e0 c\u00f3 th\u1ec3 ph\u00e2n t\u00e1n t\u1ed1t h\u01a1n trong h\u1ec7 th\u1ed1ng polyme h\u1eefu c\u01a1. V\u00e0 m\u1eadt \u0111\u1ed9, \u0111\u1ed9 c\u1ee9ng, h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t kh\u00e1c t\u1ed1t h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi b\u1ed9t silica g\u00f3c.
\u200b
V\u00ed d\u1ee5, Huang Weizhuang v\u00e0 c\u1ed9ng s\u1ef1. \u0111\u00e3 nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c lo\u1ea1i b\u1ed9t silica kh\u00e1c nhau \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t c\u1ee7a t\u1ea5m ph\u1ee7 \u0111\u1ed3ng. H\u1ecd \u0111\u00e3 s\u1eed d\u1ee5ng b\u1ed9t silica v\u00f4 \u0111\u1ecbnh h\u00ecnh, b\u1ed9t silica tinh th\u1ec3 g\u1ea7n nh\u01b0 h\u00ecnh c\u1ea7u v\u00e0 b\u1ed9t silica nung ch\u1ea3y h\u00ecnh c\u1ea7u l\u00e0m ch\u1ea5t \u0111\u1ed9n \u0111\u1ec3 chu\u1ea9n b\u1ecb c\u00e1c l\u1edbp m\u1ea1 \u0111\u1ed3ng v\u00e0 \u0111o kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t c\u1ee7a c\u00e1c l\u1edbp m\u1ea1 \u0111\u1ed3ng. Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 \u0111\u1eb7c t\u00ednh giao di\u1ec7n. K\u1ebft qu\u1ea3 cho th\u1ea5y b\u1ed9t silica h\u00ecnh c\u1ea7u t\u01b0\u01a1ng th\u00edch t\u1ed1t h\u01a1n v\u1edbi nh\u1ef1a epoxy v\u00e0 t\u1ea5m laminate ph\u1ee7 \u0111\u1ed3ng \u0111\u00e3 chu\u1ea9n b\u1ecb s\u1eb5n c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t t\u1ed1t h\u01a1n.
\u200b
N\u00f3i chung, k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a b\u1ed9t silica c\u00e0ng nh\u1ecf th\u00ec di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang c\u00e0ng l\u1edbn, c\u00e0ng c\u00f3 nhi\u1ec1u v\u1ecb tr\u00ed ho\u1ea1t \u0111\u1ed9ng tr\u00ean b\u1ec1 m\u1eb7t v\u00e0 l\u01b0\u1ee3ng ch\u1ea5t bi\u1ebfn t\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u0169ng s\u1ebd t\u0103ng l\u00ean. Ngo\u00e0i ra, b\u1ed9t silica v\u1edbi c\u00e1c k\u00edch th\u01b0\u1edbc h\u1ea1t kh\u00e1c nhau c\u0169ng c\u00f3 t\u00e1c \u0111\u1ed9ng nh\u1ea5t \u0111\u1ecbnh \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c s\u1ea3n ph\u1ea9m h\u1ea1 ngu\u1ed3n trong qu\u00e1 tr\u00ecnh \u1ee9ng d\u1ee5ng. V\u00ed d\u1ee5, khi tr\u1ed9n b\u1ed9t silica v\u1edbi nh\u1ef1a, s\u1ef1 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c qu\u00e1 l\u1edbn ho\u1eb7c qu\u00e1 nh\u1ecf. N\u1ebfu k\u00edch th\u01b0\u1edbc h\u1ea1t qu\u00e1 l\u1edbn, hi\u1ec7u su\u1ea5t \u1ee9ng d\u1ee5ng l\u00e0m \u0111\u1ea7y s\u1ebd k\u00e9m, trong khi n\u1ebfu k\u00edch th\u01b0\u1edbc h\u1ea1t qu\u00e1 nh\u1ecf, \u0111\u1ed9 nh\u1edbt c\u1ee7a h\u1ec7 th\u1ed1ng nh\u1ef1a s\u1ebd t\u0103ng l\u00ean v\u00e0 t\u00ednh l\u01b0u \u0111\u1ed9ng s\u1ebd k\u00e9m \u0111i. .<\/p>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p s\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t v\u00e0 s\u1eeda \u0111\u1ed5i<\/h2>\n\n\n\n

Hi\u1ec7n nay, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a b\u1ed9t silica ch\u1ee7 y\u1ebfu l\u00e0 bi\u1ebfn \u0111\u1ed5i h\u1eefu c\u01a1, bi\u1ebfn \u0111\u1ed5i v\u00f4 c\u01a1 v\u00e0 bi\u1ebfn \u0111\u1ed5i c\u01a1 h\u00f3a, trong \u0111\u00f3 ph\u01b0\u01a1ng ph\u00e1p bi\u1ebfn \u0111\u1ed5i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 bi\u1ebfn \u0111\u1ed5i h\u1eefu c\u01a1. Khi hi\u1ec7u \u1ee9ng s\u1eeda \u0111\u1ed5i \u0111\u01a1n l\u1ebb kh\u00f4ng t\u1ed1t, b\u1ea1n c\u00f3 th\u1ec3 c\u00e2n nh\u1eafc k\u1ebft h\u1ee3p s\u1eeda \u0111\u1ed5i h\u1eefu c\u01a1 v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p s\u1eeda \u0111\u1ed5i kh\u00e1c \u0111\u1ec3 s\u1eeda \u0111\u1ed5i t\u1ed5ng h\u1ee3p.<\/p>\n\n\n\n

S\u1eeda \u0111\u1ed5i h\u1eefu c\u01a1<\/h3>\n\n\n\n

Bi\u1ebfn \u0111\u1ed5i h\u1eefu c\u01a1 l\u00e0 ph\u01b0\u01a1ng ph\u00e1p s\u1eed d\u1ee5ng c\u00e1c nh\u00f3m ch\u1ee9c trong ch\u1ea5t h\u1eefu c\u01a1 \u0111\u1ec3 th\u1ef1c hi\u1ec7n h\u1ea5p ph\u1ee5 v\u1eadt l\u00fd, h\u1ea5p ph\u1ee5 h\u00f3a h\u1ecdc v\u00e0 ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc tr\u00ean b\u1ec1 m\u1eb7t b\u1ed9t silica \u0111\u1ec3 thay \u0111\u1ed5i t\u00ednh ch\u1ea5t b\u1ec1 m\u1eb7t c\u1ee7a b\u1ed9t silica. Hi\u1ec7n nay, c\u00e1c ch\u1ea5t bi\u1ebfn t\u00ednh h\u1eefu c\u01a1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 c\u00e1c ch\u1ea5t li\u00ean k\u1ebft silane, ch\u1ee7 y\u1ebfu bao g\u1ed3m amino, epoxy, vinyl, sulfide v\u00e0 c\u00e1c lo\u1ea1i kh\u00e1c. Hi\u1ec7u qu\u1ea3 s\u1eeda \u0111\u1ed5i th\u01b0\u1eddng t\u1ed1t, nh\u01b0ng gi\u00e1 \u0111\u1eaft. M\u1ed9t s\u1ed1 nh\u00e0 nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng c\u00e1c ch\u1ea5t bi\u1ebfn t\u00ednh t\u01b0\u01a1ng \u0111\u1ed1i r\u1ebb ti\u1ec1n nh\u01b0 aluminate, titanate v\u00e0 axit stearic \u0111\u1ec3 bi\u1ebfn t\u00ednh b\u1ed9t silica, nh\u01b0ng hi\u1ec7u qu\u1ea3 bi\u1ebfn t\u00ednh th\u01b0\u1eddng kh\u00f4ng t\u1ed1t b\u1eb1ng t\u00e1c nh\u00e2n li\u00ean k\u1ebft silane. Do \u0111\u00f3, k\u1ebft h\u1ee3p gi\u1eefa l\u1ee3i \u00edch kinh t\u1ebf v\u00e0 hi\u1ec7u \u1ee9ng bi\u1ebfn \u0111\u1ed5i, s\u1eed d\u1ee5ng Khi s\u1eed d\u1ee5ng hai ho\u1eb7c nhi\u1ec1u ch\u1ea5t bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t \u0111\u1ec3 bi\u1ebfn t\u00ednh t\u1ed5ng h\u1ee3p b\u1ed9t silica, hi\u1ec7u qu\u1ea3 bi\u1ebfn t\u00ednh th\u01b0\u1eddng l\u00fd t\u01b0\u1edfng h\u01a1n so v\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng m\u1ed9t ch\u1ea5t bi\u1ebfn t\u00ednh duy nh\u1ea5t.<\/p>\n\n\n\n

Bi\u1ebfn \u0111\u1ed5i v\u00f4 c\u01a1<\/h3>\n\n\n\n

Bi\u1ebfn \u0111\u1ed5i v\u00f4 c\u01a1 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c ph\u1ee7 ho\u1eb7c k\u1ebft h\u1ee3p kim lo\u1ea1i, oxit v\u00f4 c\u01a1, hydroxit, v.v. tr\u00ean b\u1ec1 m\u1eb7t b\u1ed9t silica \u0111\u1ec3 t\u1ea1o ra c\u00e1c ch\u1ee9c n\u0103ng m\u1edbi cho v\u1eadt li\u1ec7u. V\u00ed d\u1ee5, Oyama v\u00e0 c\u1ed9ng s\u1ef1. \u0111\u00e3 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p k\u1ebft t\u1ee7a \u0111\u1ec3 ph\u1ee7 Al(OH)3 l\u00ean b\u1ec1 m\u1eb7t SiO2, sau \u0111\u00f3 b\u1ecdc SiO2 \u0111\u00e3 bi\u1ebfn t\u00ednh b\u1eb1ng polydivinylbenzen \u0111\u1ec3 \u0111\u00e1p \u1ee9ng m\u1ed9t s\u1ed1 y\u00eau c\u1ea7u \u1ee9ng d\u1ee5ng \u0111\u1eb7c bi\u1ec7t.<\/p>\n\n\n\n

Bi\u1ebfn \u0111\u1ed5i c\u01a1 h\u00f3a<\/h3>\n\n\n\n

Bi\u1ebfn \u0111\u1ed5i c\u01a1 h\u00f3a h\u1ecdc tr\u01b0\u1edbc ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng l\u1ef1c m\u00e0i si\u00eau m\u1ecbn v\u00e0 c\u00e1c l\u1ef1c c\u01a1 h\u1ecdc m\u1ea1nh kh\u00e1c \u0111\u1ec3 k\u00edch ho\u1ea1t b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t b\u1ed9t \u0111\u1ec3 t\u0103ng \u0111i\u1ec3m ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c nh\u00f3m ho\u1ea1t \u0111\u1ed9ng tr\u00ean b\u1ec1 m\u1eb7t b\u1ed9t silica, sau \u0111\u00f3 k\u1ebft h\u1ee3p c\u00e1c ch\u1ea5t bi\u1ebfn t\u00ednh \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 bi\u1ebfn \u0111\u1ed5i t\u1ed5ng h\u1ee3p c\u1ee7a b\u1ed9t silica.<\/p>\n\n\n\n

Li\u1ec1u l\u01b0\u1ee3ng \u0111i\u1ec1u ch\u1ec9nh<\/h2>\n\n\n\n

L\u01b0\u1ee3ng ch\u1ea5t bi\u1ebfn t\u00ednh th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn s\u1ed1 l\u01b0\u1ee3ng \u0111i\u1ec3m ho\u1ea1t \u0111\u1ed9ng (ch\u1eb3ng h\u1ea1n nh\u01b0 Si-OH) tr\u00ean b\u1ec1 m\u1eb7t b\u1ed9t silica v\u00e0 l\u1edbp \u0111\u01a1n ph\u00e2n t\u1eed v\u00e0 \u0111\u1ed9 d\u00e0y l\u01b0\u1ee1ng ph\u00e2n t\u1eed c\u1ee7a ch\u1ea5t bi\u1ebfn t\u00ednh bao ph\u1ee7 b\u1ec1 m\u1eb7t. Khi l\u01b0\u1ee3ng ch\u1ea5t bi\u1ebfn t\u00ednh qu\u00e1 nh\u1ecf, m\u1ee9c \u0111\u1ed9 ho\u1ea1t h\u00f3a b\u1ec1 m\u1eb7t c\u1ee7a b\u1ed9t silica bi\u1ebfn t\u00ednh s\u1ebd kh\u00f4ng cao; khi l\u01b0\u1ee3ng ch\u1ea5t bi\u1ebfn t\u00ednh qu\u00e1 l\u1edbn, n\u00f3 kh\u00f4ng ch\u1ec9 l\u00e0m t\u0103ng chi ph\u00ed s\u1eeda \u0111\u1ed5i m\u00e0 c\u00f2n t\u1ea1o th\u00e0nh m\u1ed9t l\u1edbp v\u1eadt l\u00fd nhi\u1ec1u l\u1edbp tr\u00ean b\u1ec1 m\u1eb7t b\u1ed9t silica bi\u1ebfn t\u00ednh. S\u1ef1 h\u1ea5p ph\u1ee5 l\u00e0m cho b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac gi\u1eefa b\u1ed9t silica v\u00e0 polyme h\u1eefu c\u01a1 t\u1ea1o th\u00e0nh m\u1ed9t l\u1edbp y\u1ebfu, d\u1eabn \u0111\u1ebfn kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t c\u1ea7u n\u1ed1i ph\u00e2n t\u1eed \u0111\u01a1n l\u1ebb.<\/p>\n\n\n\n

Qu\u00e1 tr\u00ecnh s\u1eeda \u0111\u1ed5i v\u00e0 t\u1ed1i \u01b0u h\u00f3a \u0111i\u1ec1u ki\u1ec7n<\/h2>\n\n\n\n

C\u00e1c quy tr\u00ecnh bi\u1ebfn \u0111\u1ed5i th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho b\u1ed9t silica ch\u1ee7 y\u1ebfu bao g\u1ed3m bi\u1ebfn \u0111\u1ed5i kh\u00f4, bi\u1ebfn \u0111\u1ed5i \u01b0\u1edbt v\u00e0 bi\u1ebfn \u0111\u1ed5i h\u1ed7n h\u1ee3p.<\/p>\n\n\n\n

(1) Bi\u1ebfn t\u00ednh kh\u00f4 l\u00e0 bi\u1ebfn \u0111\u1ed5i trong \u0111\u00f3 b\u1ed9t silica \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n trong thi\u1ebft b\u1ecb bi\u1ebfn t\u00ednh \u1edf tr\u1ea1ng th\u00e1i t\u01b0\u01a1ng \u0111\u1ed1i kh\u00f4 v\u00e0 k\u1ebft h\u1ee3p v\u1edbi m\u1ed9t l\u01b0\u1ee3ng ch\u1ea5t bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t nh\u1ea5t \u0111\u1ecbnh \u1edf nhi\u1ec7t \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh. Qu\u00e1 tr\u00ecnh s\u1eeda \u0111\u1ed5i kh\u00f4 \u0111\u01a1n gi\u1ea3n v\u00e0 c\u00f3 chi ph\u00ed s\u1ea3n xu\u1ea5t th\u1ea5p. \u0110\u00e2y hi\u1ec7n l\u00e0 ph\u01b0\u01a1ng ph\u00e1p bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t ch\u00ednh c\u1ee7a b\u1ed9t silica trong n\u01b0\u1edbc v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi b\u1ed9t silica \u1edf c\u1ea5p \u0111\u1ed9 micron.
\u200b
(2) S\u1eeda \u0111\u1ed5i \u01b0\u1edbt \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c l\u00e0m \u01b0\u1edbt b\u1ec1 m\u1eb7t b\u1ed9t silicon trong \u0111i\u1ec1u ki\u1ec7n pha l\u1ecfng \u0111\u1ec3 gi\u1ea3m n\u0103ng l\u01b0\u1ee3ng li\u00ean k\u1ebft c\u1ee7a b\u1ec1 m\u1eb7t, sau \u0111\u00f3 th\u00eam m\u1ed9t l\u01b0\u1ee3ng ch\u1ea5t bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t v\u00e0 ph\u1ee5 gia nh\u1ea5t \u0111\u1ecbnh, khu\u1ea5y v\u00e0 ph\u00e2n t\u00e1n \u1edf nhi\u1ec7t \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c B\u1ec1 m\u1eb7t silicon s\u1ef1 bi\u1ebfn \u0111\u1ed5i c\u1ee7a b\u1ed9t vi m\u00f4. Qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i \u01b0\u1edbt c\u00f3 th\u1ec3 l\u00e0m cho b\u1ed9t silica v\u00e0 ch\u1ea5t bi\u1ebfn t\u00ednh d\u1ec5 d\u00e0ng ph\u00e2n t\u00e1n h\u01a1n v\u00e0 k\u1ebft h\u1ee3p ho\u00e0n to\u00e0n h\u01a1n, l\u00e0m cho qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i tr\u1edf n\u00ean \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n. Tuy nhi\u00ean, c\u1ea7n ph\u1ea3i th\u1ef1c hi\u1ec7n c\u00e1c ho\u1ea1t \u0111\u1ed9ng kh\u1eed n\u01b0\u1edbc ti\u1ebfp theo, quy tr\u00ecnh n\u00e0y ph\u1ee9c t\u1ea1p v\u00e0 ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng cao, ph\u00f9 h\u1ee3p h\u01a1n v\u1edbi c\u00e1c h\u1ea1t si\u00eau m\u1ecbn c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t nh\u1ecf h\u01a1n 5 \u03bcm. Bi\u1ebfn t\u00ednh b\u1ed9t silic. Ngo\u00e0i ra, \u0111\u1ed9 h\u00f2a tan trong n\u01b0\u1edbc c\u1ee7a ch\u1ea5t bi\u1ebfn t\u00ednh c\u0169ng c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t trong qu\u00e1 tr\u00ecnh bi\u1ebfn t\u00ednh \u01b0\u1edbt, b\u1edfi v\u00ec ch\u1ec9 nh\u1eefng ch\u1ea5t bi\u1ebfn t\u00ednh c\u00f3 \u0111\u1ed9 h\u00f2a tan trong n\u01b0\u1edbc t\u1ed1t h\u01a1n m\u1edbi c\u00f3 th\u1ec3 ph\u00e2n t\u00e1n v\u00e0 t\u01b0\u01a1ng t\u00e1c t\u1ed1t h\u01a1n v\u1edbi c\u00e1c nh\u00f3m Si-OH tr\u00ean b\u1ec1 m\u1eb7t b\u1ed9t silica.
\u200b
(3) S\u1eeda \u0111\u1ed5i h\u1ed7n h\u1ee3p \u0111\u1ec1 c\u1eadp \u0111\u1ebfn s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i kh\u00f4 v\u00e0 \u01b0\u1edbt \u0111\u1ec3 c\u1ea3i thi\u1ec7n h\u01a1n n\u1eefa m\u1ee9c \u0111\u1ed9 k\u00edch ho\u1ea1t c\u1ee7a b\u1ed9t silica. V\u00ed d\u1ee5, Cao Jiakai v\u00e0 c\u1ed9ng s\u1ef1. th\u1ef1c hi\u1ec7n s\u1eeda \u0111\u1ed5i theo hai b\u01b0\u1edbc th\u00f4ng qua qu\u00e1 tr\u00ecnh kh\u00f4 v\u00e0 \u01b0\u1edbt. Ngh\u0129a l\u00e0, \u0111\u1ea7u ti\u00ean th\u00f4ng qua qu\u00e1 tr\u00ecnh bi\u1ebfn t\u00ednh kh\u00f4, \u03b3-(2,3-epoxypropoxy)propyltrimethylsilane \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ti\u1ebfn h\u00e0nh bi\u1ebfn t\u00ednh s\u01a1 b\u1ed9 b\u1ed9t silica. S\u1eeda \u0111\u1ed5i, v\u00e0 sau \u0111\u00f3 th\u00f4ng qua s\u1eeda \u0111\u1ed5i \u01b0\u1edbt, s\u1eed d\u1ee5ng N-phenyl-aminotrimethoxysilane \u0111\u1ec3 s\u1eeda \u0111\u1ed5i \u0111\u1ec3 thu \u0111\u01b0\u1ee3c vi b\u1ed9t silica ho\u1ea1t \u0111\u1ed9ng. K\u1ebft qu\u1ea3 cho th\u1ea5y b\u1ed9t silica \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb qu\u00e1 tr\u00ecnh bi\u1ebfn t\u00ednh composite c\u00f3 ho\u1ea1t t\u00ednh cao, t\u00ednh k\u1ef5 n\u01b0\u1edbc t\u1ed1t, s\u1ed1 l\u01b0\u1ee3ng nh\u00f3m hydroxyl b\u1ec1 m\u1eb7t nh\u1ecf v\u00e0 c\u00f3 th\u1ec3 ph\u00e2n t\u00e1n t\u1ed1t h\u01a1n trong h\u1ec7 th\u1ed1ng nh\u1ef1a.
\u200b
Ngo\u00e0i ra, \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 bi\u1ebfn t\u00ednh t\u1ed1t c\u1ee7a b\u1ed9t silica, c\u1ea7n ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 pH, th\u1eddi gian, t\u1ed1c \u0111\u1ed9 khu\u1ea5y v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n x\u1eed l\u00fd kh\u00e1c trong qu\u00e1 tr\u00ecnh bi\u1ebfn t\u00ednh.
\u200b
Nhi\u1ec7t \u0111\u1ed9 bi\u1ebfn t\u00ednh l\u00e0 \u0111i\u1ec1u ki\u1ec7n quan tr\u1ecdng cho qu\u00e1 tr\u00ecnh ng\u01b0ng t\u1ee5, kh\u1eed n\u01b0\u1edbc v\u00e0 h\u00ecnh th\u00e0nh li\u00ean k\u1ebft c\u1ed9ng h\u00f3a tr\u1ecb m\u1ea1nh gi\u1eefa ch\u1ea5t bi\u1ebfn t\u00ednh v\u00e0 b\u1ed9t silica. Nhi\u1ec7t \u0111\u1ed9 s\u1eeda \u0111\u1ed5i kh\u00f4ng \u0111\u01b0\u1ee3c qu\u00e1 cao ho\u1eb7c qu\u00e1 th\u1ea5p. Nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao s\u1ebd khi\u1ebfn ch\u1ea5t bi\u1ebfn t\u00ednh b\u1ecb ph\u00e2n h\u1ee7y ho\u1eb7c bay h\u01a1i, nhi\u1ec7t \u0111\u1ed9 qu\u00e1 th\u1ea5p s\u1ebd khi\u1ebfn ch\u1ea5t bi\u1ebfn t\u00ednh b\u1ecb ph\u00e2n h\u1ee7y ho\u1eb7c bay h\u01a1i. \u0110i\u1ec1u n\u00e0y s\u1ebd l\u00e0m gi\u1ea3m t\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng gi\u1eefa ch\u1ea5t bi\u1ebfn t\u00ednh v\u00e0 b\u1ed9t silica, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 bi\u1ebfn t\u00ednh.<\/p>\n\n\n\n

\u0110\u1ed1i v\u1edbi c\u00e1c ch\u1ea5t bi\u1ebfn t\u00ednh h\u00f2a tan qua dung m\u00f4i, pH s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 th\u1ee7y ph\u00e2n. Th\u1eddi gian bi\u1ebfn t\u00ednh d\u00e0i h\u01a1n l\u00e0m cho s\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa ch\u1ea5t bi\u1ebfn t\u00ednh v\u00e0 b\u1ed9t silica tr\u1edf n\u00ean ho\u00e0n thi\u1ec7n v\u00e0 ch\u1eafc ch\u1eafn h\u01a1n; t\u1ed1c \u0111\u1ed9 khu\u1ea5y th\u00edch h\u1ee3p c\u00f3 th\u1ec3 l\u00e0m cho ch\u1ea5t bi\u1ebfn t\u00ednh v\u00e0 b\u1ed9t silica ti\u1ebfp x\u00fac ho\u00e0n to\u00e0n h\u01a1n v\u00e0 c\u1ea3i thi\u1ec7n s\u1ef1 ph\u00e2n t\u00e1n c\u1ee7a ch\u1ea5t bi\u1ebfn t\u00ednh trong b\u1ed9t silica.<\/p>","protected":false},"excerpt":{"rendered":"

B\u1ea3n th\u00e2n b\u1ed9t silica l\u00e0 m\u1ed9t ch\u1ea5t ph\u00e2n c\u1ef1c v\u00e0 \u01b0a n\u01b0\u1edbc. N\u00f3 c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh giao di\u1ec7n kh\u00e1c v\u1edbi ma tr\u1eadn polymer v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch k\u00e9m. Th\u01b0\u1eddng r\u1ea5t kh\u00f3 ph\u00e2n t\u00e1n trong [\u2026]<\/p>","protected":false},"author":1,"featured_media":15766,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"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":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[42],"tags":[],"class_list":["post-15764","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news"],"yoast_head":"\nThe surface modification effect of silica powder will determine its quality - Silica powder (ultrafine quartz powder) processing expert<\/title>\n<meta name=\"description\" content=\"Silica powder itself is a polar and hydrophilic substance. 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