{"id":14849,"date":"2024-12-04T07:37:51","date_gmt":"2024-12-04T07:37:51","guid":{"rendered":"https:\/\/www.epicmicron.com\/?p=14849"},"modified":"2024-12-17T08:02:31","modified_gmt":"2024-12-17T08:02:31","slug":"spherical-silicon-powder-14-proven-methods-to-achieve-the-perfect-shape","status":"publish","type":"post","link":"https:\/\/www.epicmicron.com\/vi\/spherical-silicon-powder-14-proven-methods-to-achieve-the-perfect-shape\/","title":{"rendered":"B\u1ed9t Silicon H\u00ecnh C\u1ea7u: 14 Ph\u01b0\u01a1ng Ph\u00e1p \u0110\u00e3 \u0110\u01b0\u1ee3c Ch\u1ee9ng Minh \u0110\u1ec3 C\u00f3 \u0110\u01b0\u1ee3c H\u00ecnh D\u1ea1ng Ho\u00e0n H\u1ea3o"},"content":{"rendered":"

B\u1ed9t silic h\u00ecnh c\u1ea7u l\u00e0 v\u1eadt li\u1ec7u quan tr\u1ecdng trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p, \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao v\u00ec c\u00e1c t\u00ednh ch\u1ea5t v\u00e0 \u1ee9ng d\u1ee5ng \u0111\u1ed9c \u0111\u00e1o c\u1ee7a n\u00f3. Qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t b\u1ed9t silic h\u00ecnh c\u1ea7u li\u00ean quan \u0111\u1ebfn nhi\u1ec1u k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh ph\u01b0\u01a1ng ph\u00e1p v\u1eadt l\u00fd v\u00e0 ph\u01b0\u01a1ng ph\u00e1p h\u00f3a h\u1ecdc. N\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c li\u1ec7u c\u00f3 x\u1ea3y ra bi\u1ebfn \u0111\u1ed5i h\u00f3a h\u1ecdc trong qu\u00e1 tr\u00ecnh n\u00e0y hay kh\u00f4ng.<\/p>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t b\u1ed9t silic h\u00ecnh c\u1ea7u l\u00e0 g\u00ec?<\/h2>\n\n\n\n

1. Ph\u01b0\u01a1ng ph\u00e1p v\u1eadt l\u00fd:<\/strong><\/h3>\n\n\n\n

C\u00e1c ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng li\u00ean quan \u0111\u1ebfn ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc. Ch\u00fang bao g\u1ed3m c\u00e1c k\u1ef9 thu\u1eadt nh\u01b0: nghi\u1ec1n bi c\u01a1 h\u1ecdc, phun, c\u1ea7u h\u00f3a ng\u1ecdn l\u1eeda, x\u1eed l\u00fd plasma, c\u1ea7u h\u00f3a nung \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n\n\n\n

2. Ph\u01b0\u01a1ng ph\u00e1p h\u00f3a h\u1ecdc:<\/strong><\/h3>\n\n\n\n

Ch\u00fang li\u00ean quan \u0111\u1ebfn c\u00e1c chuy\u1ec3n \u0111\u1ed5i h\u00f3a h\u1ecdc v\u00e0 bao g\u1ed3m: ph\u01b0\u01a1ng ph\u00e1p pha kh\u00ed, ph\u01b0\u01a1ng ph\u00e1p k\u1ebft t\u1ee7a, t\u1ed5ng h\u1ee3p th\u1ee7y nhi\u1ec7t, quy tr\u00ecnh sol-gel, ph\u01b0\u01a1ng ph\u00e1p nh\u0169 t\u01b0\u01a1ng vi m\u00f4.<\/p>\n\n\n\n

H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 14 ph\u01b0\u01a1ng ph\u00e1p ch\u1ebf bi\u1ebfn \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c trong vi\u1ec7c t\u1ea1o ra h\u00ecnh c\u1ea7u mong mu\u1ed1n.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Quy tr\u00ecnh s\u1ea3n xu\u1ea5t b\u1ed9t vi silic h\u00ecnh c\u1ea7u<\/p>\n\n\n\n

01 Ph\u01b0\u01a1ng ph\u00e1p m\u00e0i c\u01a1 h\u1ecdc<\/h2>\n\n\n\n

Nghi\u1ec1n c\u01a1 h\u1ecdc s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb nghi\u1ec1n chuy\u00ean nghi\u1ec7p v\u00e0 thi\u1ebft b\u1ecb s\u00e0ng ph\u1ee5 tr\u1ee3 \u0111\u1ec3 s\u1ea3n xu\u1ea5t b\u1ed9t si\u00eau m\u1ecbn. Theo tr\u1ea1ng th\u00e1i c\u1ee7a v\u1eadt li\u1ec7u, c\u00f3 nghi\u1ec1n kh\u00f4 v\u00e0 nghi\u1ec1n \u01b0\u1edbt. Nghi\u1ec1n \u01b0\u1edbt s\u1eed d\u1ee5ng n\u01b0\u1edbc l\u00e0m m\u00f4i tr\u01b0\u1eddng mang v\u00e0 c\u00e1c h\u1ea1t \u0111\u01b0\u1ee3c nghi\u1ec1n b\u1eb1ng c\u00e1ch khu\u1ea5y v\u00e0 nghi\u1ec1n. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c s\u1ea3n ph\u1ea9m si\u00eau m\u1ecbn c\u00f3 \u0111\u1ed9 ph\u00e2n t\u00e1n t\u1ed1t v\u00e0 k\u00edch th\u01b0\u1edbc h\u1ea1t \u0111\u1ed3ng \u0111\u1ec1u.<\/p>\n\n\n\n

02 Ph\u01b0\u01a1ng ph\u00e1p phun<\/h2>\n\n\n\n

S\u1ea5y phun l\u00e0 ph\u01b0\u01a1ng ph\u00e1p l\u1ea5y m\u1eabu b\u1eb1ng c\u00e1ch s\u1ea5y nhanh nguy\u00ean li\u1ec7u d\u1ea1ng l\u1ecfng th\u00f4ng qua m\u00e1y s\u1ea5y phun. Nguy\u00ean li\u1ec7u d\u1ea1ng l\u1ecfng \u0111i qua m\u1ed9t m\u00e1y phun \u0111\u1ec3 t\u1ea1o th\u00e0nh c\u00e1c gi\u1ecdt c\u1ef1c m\u1ecbn. C\u00e1c gi\u1ecdt ti\u1ebfp x\u00fac v\u1edbi kh\u00f4ng kh\u00ed n\u00f3ng v\u00e0 \u0111\u1ed9 \u1ea9m b\u00ean trong di chuy\u1ec3n ra ngo\u00e0i. C\u00e1c h\u1ea1t nguy\u00ean li\u1ec7u k\u1ebft t\u1ee5 l\u1ea1i. Sau khi s\u1ea5y kh\u00f4, m\u1ecdi ng\u01b0\u1eddi c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c s\u1ea3n ph\u1ea9m mong mu\u1ed1n.<\/p>\n\n\n\n

03 Ph\u01b0\u01a1ng ph\u00e1p h\u00ecnh c\u1ea7u ng\u1ecdn l\u1eeda<\/h2>\n\n\n\n

D\u01b0\u1edbi 1600-2000\u2103, c\u00e1c c\u1ea1nh tr\u00ean b\u1ec1 m\u1eb7t b\u1ed9t s\u1ebd d\u1ea7n tan ch\u1ea3y. M\u1ed9t qu\u1ea3 c\u1ea7u \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a s\u1ee9c c\u0103ng b\u1ec1 m\u1eb7t. B\u1ed9t th\u1ea1ch anh th\u00f4ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m nguy\u00ean li\u1ec7u, b\u1ed9t silic h\u00ecnh c\u1ea7u \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ng\u1ecdn l\u1eeda oxy-axetilen. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ec1 m\u1eb7t c\u1ee7a n\u00f3 nh\u1eb5n v\u00e0 t\u1ef7 l\u1ec7 h\u00ecnh c\u1ea7u h\u00f3a \u0111\u1ea1t 95%.<\/p>\n\n\n\n

04 Ph\u01b0\u01a1ng ph\u00e1p n\u1ea5u ch\u1ea3y b\u1eb1ng ng\u1ecdn l\u1eeda<\/h2>\n\n\n\n

S\u1eed d\u1ee5ng b\u1ed9t vi silic g\u00f3c l\u00e0m nguy\u00ean li\u1ec7u th\u00f4, ch\u00fang t\u00f4i nghi\u1ec1n, s\u00e0ng, tinh ch\u1ebf v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc x\u1eed l\u00fd tr\u01b0\u1edbc kh\u00e1c. M\u00e1y nghi\u1ec1n lu\u1ed3ng kh\u00ed nghi\u1ec1n b\u1ed9t vi silic g\u00f3c. Sau khi x\u1eed l\u00fd tr\u01b0\u1edbc nhi\u1ec1u giai \u0111o\u1ea1n, ch\u00fang t\u00f4i s\u00e0ng th\u00e0nh k\u00edch th\u01b0\u1edbc h\u1ea1t ph\u00f9 h\u1ee3p. Ch\u00fang t\u00f4i s\u1eed d\u1ee5ng axetilen, kh\u00ed t\u1ef1 nhi\u00ean v\u00e0 c\u00e1c lo\u1ea1i kh\u00ed kh\u00e1c l\u00e0m ngu\u1ed3n nhi\u1ec7t \u0111\u1ec3 l\u00e0m tan ch\u1ea3y b\u1ed9t, ng\u1ecdn l\u1eeda v\u1eabn s\u1ea1ch v\u00e0 kh\u00f4ng g\u00e2y \u00f4 nhi\u1ec5m. Ng\u1ecdn l\u1eeda nhi\u1ec7t \u0111\u1ed9 cao l\u00e0m tan ch\u1ea3y b\u1ed9t vi silic g\u00f3c c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t ph\u00f9 h\u1ee3p ngay l\u1eadp t\u1ee9c v\u00e0 ch\u00fang t\u00f4i nhanh ch\u00f3ng l\u00e0m ngu\u1ed9i th\u00e0nh h\u00ecnh c\u1ea7u. Ch\u00fang t\u00f4i thu \u0111\u01b0\u1ee3c b\u1ed9t vi silic h\u00ecnh c\u1ea7u c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 \u0111\u1ed9 tinh khi\u1ebft cao.<\/p>\n\n\n\n

05 Ph\u01b0\u01a1ng ph\u00e1p plasma<\/h2>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p plasma s\u1eed d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi h\u1ed3 quang plasma<\/a>. N\u00f3 l\u00e0m tan ch\u1ea3y b\u1ed9t silicon dioxide ho\u1eb7c b\u1ed9t th\u1ea1ch anh th\u00e0nh c\u00e1c gi\u1ecdt. Ch\u00fang \u0111\u01b0\u1ee3c h\u00ecnh c\u1ea7u h\u00f3a d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a s\u1ee9c c\u0103ng b\u1ec1 m\u1eb7t v\u00e0 \u0111\u01b0\u1ee3c l\u00e0m l\u1ea1nh \u0111\u1ec3 t\u1ea1o th\u00e0nh c\u00e1c h\u1ea1t silicon dioxide h\u00ecnh c\u1ea7u.<\/p>\n\n\n\n

06 Ph\u01b0\u01a1ng ph\u00e1p c\u1ea7u h\u00f3a nung \u1edf nhi\u1ec7t \u0111\u1ed9 cao<\/h2>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p nung c\u1ea7u h\u00f3a nhi\u1ec7t \u0111\u1ed9 cao l\u00e0 ph\u01b0\u01a1ng ph\u00e1p l\u00e0m gi\u00e0 b\u1ed9t qu\u1eb7ng th\u1ea1ch anh t\u1ef1 nhi\u00ean th\u00f4 \u0111\u00e3 ch\u1ecdn trong \u0111i\u1ec1u ki\u1ec7n ki\u1ec1m v\u00e0 sau \u0111\u00f3 l\u1ecdc. L\u00e0m m\u1ea5t n\u01b0\u1edbc v\u00e0 s\u1ea5y kh\u00f4 v\u1eadt li\u1ec7u l\u1ecdc, th\u00eam ch\u1ea5t k\u1ebft d\u00ednh \u0111\u1ec3 thu \u0111\u01b0\u1ee3c m\u1eabu kh\u1ed1i v\u00e0 nung trong l\u00f2 nhi\u1ec7t \u0111\u1ed9 cao, l\u00e0m ngu\u1ed9i v\u00e0 sau \u0111\u00f3 ph\u00e2n t\u00e1n, th\u00f4ng qua qu\u00e1 tr\u00ecnh nghi\u1ec1n c\u1ea7u h\u00f3a, t\u00e1ch t\u1eeb v\u00e0 ph\u00e2n lo\u1ea1i t\u00e1ch kh\u00ed. Cu\u1ed1i c\u00f9ng t\u1ea1o ra b\u1ed9t silic h\u00ecnh c\u1ea7u si\u00eau m\u1ecbn c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao. S\u1ea3n ph\u1ea9m thu \u0111\u01b0\u1ee3c b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 t\u1ef7 l\u1ec7 c\u1ea7u h\u00f3a cao, \u0111\u1ed9 tr\u1eafng t\u1ed1t, \u0111\u1ed9 tinh khi\u1ebft cao, \u0111\u1ed9 l\u01b0u \u0111\u1ed9ng v\u00e0 kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n t\u1ed1t. Tuy nhi\u00ean, v\u1eabn \u0111ang trong giai \u0111o\u1ea1n ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n\n\n\n

07 Ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ed1t ch\u00e1y tr\u1ef1c ti\u1ebfp<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

V\u00ec silicon h\u00ecnh c\u1ea7u n\u00f3ng ch\u1ea3y b\u1eb1ng ng\u1ecdn l\u1eeda l\u00e0 d\u1ea1ng c\u1ea7u h\u00f3a b\u1ed9t kho\u00e1ng t\u1ef1 nhi\u00ean, n\u00ean c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf nh\u1ea5t \u0111\u1ecbnh v\u1ec1 \u0111\u1ed9 tinh khi\u1ebft v\u00e0 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t. M\u1ed9t s\u1ed1 c\u00f4ng ty n\u01b0\u1edbc ngo\u00e0i h\u00e0ng \u0111\u1ea7u s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p ch\u1ebf t\u1ea1o ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ed1t tr\u1ef1c ti\u1ebfp (VMC). Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y l\u00e0 \u0111\u1ec3 ch\u1ebf t\u1ea1o c\u00e1c vi c\u1ea7u silicon dioxide c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao, k\u00edch th\u01b0\u1edbc h\u1ea1t nh\u1ecf v\u00e0 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t t\u01b0\u01a1ng \u0111\u1ed1i c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c th\u00f4ng qua ph\u1ea3n \u1ee9ng tr\u1ef1c ti\u1ebfp c\u1ee7a b\u1ed9t silicon kim lo\u1ea1i v\u1edbi oxy.<\/p>\n\n\n\n

08 Ph\u01b0\u01a1ng ph\u00e1p phun n\u00f3ng ch\u1ea3y nhi\u1ec7t \u0111\u1ed9 cao<\/h2>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p phun n\u00f3ng ch\u1ea3y nhi\u1ec7t \u0111\u1ed9 cao l\u00e0 l\u00e0m tan ch\u1ea3y th\u1ea1ch anh c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao th\u00e0nh ch\u1ea5t l\u1ecfng \u1edf nhi\u1ec7t \u0111\u1ed9 2100-2500 \u2103, v\u00e0 thu \u0111\u01b0\u1ee3c b\u1ed9t vi silic h\u00ecnh c\u1ea7u sau khi phun v\u00e0 l\u00e0m m\u00e1t. B\u1ec1 m\u1eb7t s\u1ea3n ph\u1ea9m nh\u1eb5n, t\u1ed1c \u0111\u1ed9 h\u00ecnh c\u1ea7u h\u00f3a v\u00e0 t\u1ed1c \u0111\u1ed9 v\u00f4 \u0111\u1ecbnh h\u00ecnh c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 100%. M\u1ed9t s\u1ed1 nh\u00e0 s\u1ea3n xu\u1ea5t \u1edf Hoa K\u1ef3 v\u00e0 Nh\u1eadt B\u1ea3n s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1ec3 s\u1ea3n xu\u1ea5t b\u1ed9t vi silic h\u00ecnh c\u1ea7u. Nh\u01b0ng n\u00f3 ho\u00e0n to\u00e0n b\u00ed m\u1eadt v\u1edbi b\u00ean ngo\u00e0i. Ph\u01b0\u01a1ng ph\u00e1p phun n\u00f3ng ch\u1ea3y nhi\u1ec7t \u0111\u1ed9 cao d\u1ec5 \u0111\u1ea3m b\u1ea3o t\u1ed1c \u0111\u1ed9 h\u00ecnh c\u1ea7u h\u00f3a v\u00e0 t\u1ed1c \u0111\u1ed9 v\u00f4 \u0111\u1ecbnh h\u00ecnh, nh\u01b0ng kh\u00f3 kh\u0103n c\u1ee7a c\u00f4ng ngh\u1ec7 tgdrgdddddddhis l\u00e0 h\u1ec7 th\u1ed1ng phun s\u01b0\u01a1ng c\u1ee7a v\u1eadt li\u1ec7u nhi\u1ec7t \u0111\u1ed9 cao, ch\u1ea5t l\u1ecfng n\u00f3ng ch\u1ea3y th\u1ea1ch anh nh\u1edbt, \u0111i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc h\u1ea1t phun s\u01b0\u01a1ng v\u00e0 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 ng\u0103n ng\u1eeba \u00f4 nhi\u1ec5m v\u00e0 tinh ch\u1ebf th\u00eam.<\/p>\n\n\n\n

09 Ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ed1t ch\u00e1y nhi\u1ec7t \u0111\u1ed9 th\u1ea5p t\u1ef1 lan truy\u1ec1n<\/h2>\n\n\n\n

Quy tr\u00ecnh c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ed1t nhi\u1ec7t \u0111\u1ed9 th\u1ea5p t\u1ef1 lan truy\u1ec1n bao g\u1ed3m vi\u1ec7c chu\u1ea9n b\u1ecb natri silicat, chu\u1ea9n b\u1ecb sol silicat, chu\u1ea9n b\u1ecb ch\u1ea5t l\u1ecfng \u0111\u1ed1t h\u1ed7n h\u1ee3p, ph\u1ea3n \u1ee9ng \u0111\u1ed1t, \u1ee7 v\u00e0 kh\u1eed cacbon, x\u1eed l\u00fd r\u1eeda v\u00e0 c\u00e1c b\u01b0\u1edbc kh\u00e1c. \u01afu \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y l\u00e0 s\u1eed d\u1ee5ng b\u1ed9t vi tinh th\u1ec3 silic t\u1ef1 nhi\u00ean ho\u1eb7c b\u1ed9t vi tinh th\u1ec3 silic n\u00f3ng ch\u1ea3y l\u00e0m nguy\u00ean li\u1ec7u. \u0110i\u1ec1u n\u00e0y d\u1ec5 d\u00e0ng c\u00f3 \u0111\u01b0\u1ee3c. Quy tr\u00ecnh \u0111\u01a1n gi\u1ea3n, kh\u00f4ng c\u1ea7n thi\u1ebft b\u1ecb \u0111\u1eb7c bi\u1ec7t, thao t\u00e1c d\u1ec5 ki\u1ec3m so\u00e1t v\u00e0 chi ph\u00ed s\u1ea3n xu\u1ea5t th\u1ea5p. C\u00e1c v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong quy tr\u00ecnh s\u1ea3n xu\u1ea5t ch\u1ec9 ch\u1ee9a c\u00e1c ion natri v\u00e0 ion nitrat r\u1ea5t d\u1ec5 h\u00f2a tan trong n\u01b0\u1edbc v\u00e0 kh\u00f4ng \u0111\u01b0a v\u00e0o c\u00e1c ion t\u1ea1p ch\u1ea5t kh\u00e1c, c\u00f3 l\u1ee3i cho vi\u1ec7c chu\u1ea9n b\u1ecb b\u1ed9t vi tinh th\u1ec3 silic c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao. Hi\u1ec7n t\u1ea1i, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ch\u1ec9 \u1edf giai \u0111o\u1ea1n ph\u00f2ng th\u00ed nghi\u1ec7m v\u00e0 kh\u00f4ng th\u1ec3 s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t t\u1ed1t.<\/p>\n\n\n\n

10 Ph\u01b0\u01a1ng ph\u00e1p pha kh\u00ed<\/h2>\n\n\n\n

Quy tr\u00ecnh s\u1ea3n xu\u1ea5t s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u ch\u1ec9 ch\u1ee9a ion natri v\u00e0 ion nitrat, c\u00f3 \u0111\u1ed9 h\u00f2a tan cao trong n\u01b0\u1edbc v\u00e0 ch\u00fang t\u00f4i kh\u00f4ng \u0111\u01b0a b\u1ea5t k\u1ef3 ion t\u1ea1p ch\u1ea5t n\u00e0o kh\u00e1c v\u00e0o. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 l\u1ee3i cho vi\u1ec7c ch\u1ebf t\u1ea1o b\u1ed9t silic si\u00eau tinh khi\u1ebft. Hi\u1ec7n t\u1ea1i, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ch\u1ec9 \u1edf giai \u0111o\u1ea1n ph\u00f2ng th\u00ed nghi\u1ec7m v\u00e0 ch\u00fang t\u00f4i ch\u01b0a th\u1ec3 s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n

11 Ph\u01b0\u01a1ng ph\u00e1p k\u1ebft t\u1ee7a<\/h2>\n\n\n\n

Ch\u00fang t\u00f4i s\u1eed d\u1ee5ng th\u1ee7y tinh n\u01b0\u1edbc, ch\u1ea5t axit h\u00f3a v\u00e0 c\u00e1c nguy\u00ean li\u1ec7u th\u00f4 kh\u00e1c, th\u00eam m\u1ed9t l\u01b0\u1ee3ng ch\u1ea5t ho\u1ea1t \u0111\u1ed9ng b\u1ec1 m\u1eb7t th\u00edch h\u1ee3p. Ch\u00fang t\u00f4i ch\u00fa \u00fd ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 trong to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh chu\u1ea9n b\u1ecb. N\u1ebfu gi\u00e1 tr\u1ecb pH v\u01b0\u1ee3t qu\u00e1 8, ch\u00fang t\u00f4i th\u00eam ch\u1ea5t \u1ed5n \u0111\u1ecbnh. Sau khi r\u1eeda, s\u1ea5y kh\u00f4 v\u00e0 nung, ch\u00fang t\u00f4i t\u1ea1o th\u00e0nh b\u1ed9t silic h\u00ecnh c\u1ea7u. B\u1ed9t silic h\u00ecnh c\u1ea7u \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o theo ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t r\u1ea5t \u0111\u1ed3ng \u0111\u1ec1u, chi ph\u00ed th\u1ea5p, quy tr\u00ecnh \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 ki\u1ec3m so\u00e1t. Ch\u00fang t\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t c\u00f4ng nghi\u1ec7p, nh\u01b0ng nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 n\u00f3 c\u00f3 th\u1ec3 k\u1ebft t\u1ee5.<\/p>\n\n\n\n

12 Ph\u01b0\u01a1ng ph\u00e1p t\u1ed5ng h\u1ee3p th\u1ee7y nhi\u1ec7t<\/h2>\n\n\n\n

Ch\u00fang t\u00f4i s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i ph\u01b0\u01a1ng ph\u00e1p t\u1ed5ng h\u1ee3p th\u1ee7y nhi\u1ec7t \u0111\u1ec3 ch\u1ebf t\u1ea1o h\u1ea1t nano trong pha l\u1ecfng. Nh\u00ecn chung, ch\u00fang t\u00f4i k\u1ebft h\u1ee3p c\u00e1c h\u1ee3p ch\u1ea5t v\u00f4 c\u01a1 v\u00e0 h\u1eefu c\u01a1 v\u1edbi n\u01b0\u1edbc trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 \u00e1p su\u1ea5t cao t\u1eeb 150\u2103 \u0111\u1ebfn 350\u2103. Ch\u00fang t\u00f4i cho ph\u00e9p c\u00e1c ion, ph\u00e2n t\u1eed, c\u1ee5m ion, v.v., \u0111i v\u00e0o v\u00f9ng t\u0103ng tr\u01b0\u1edfng v\u1edbi c\u00e1c tinh th\u1ec3 h\u1ea1t gi\u1ed1ng th\u00f4ng qua s\u1ef1 \u0111\u1ed1i l\u01b0u m\u1ea1nh v\u00e0 cu\u1ed1i c\u00f9ng, ch\u00fang t\u00f4i thu \u0111\u01b0\u1ee3c dung d\u1ecbch v\u00e0 tinh th\u1ec3 si\u00eau b\u00e3o h\u00f2a. L\u1ecdc, r\u1eeda v\u00e0 s\u1ea5y kh\u00f4 c\u00e1c ch\u1ea5t v\u00f4 c\u01a1 c\u00f3 th\u1ec3 t\u1ea1o th\u00e0nh c\u00e1c h\u1ea1t vi m\u00f4 si\u00eau m\u1ecbn v\u00e0 c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao. Vi\u1ec7c s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p t\u1ed5ng h\u1ee3p th\u1ee7y nhi\u1ec7t \u0111\u1ec3 ch\u1ebf t\u1ea1o b\u1ed9t vi m\u00f4 silic h\u00ecnh c\u1ea7u gi\u00fap lo\u1ea1i b\u1ecf qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i th\u00e0nh oxit theo y\u00eau c\u1ea7u c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed5ng h\u1ee3p pha l\u1ecfng th\u00f4ng th\u01b0\u1eddng, gi\u00fap gi\u1ea3m kh\u1ea3 n\u0103ng k\u1ebft t\u1ee5 c\u1ee9ng.<\/p>\n\n\n\n

13 Ph\u01b0\u01a1ng ph\u00e1p Sol-gel<\/h2>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p sol-gel l\u00e0 tr\u1ed9n \u0111\u1ec1u nguy\u00ean li\u1ec7u th\u00f4 v\u1edbi pha l\u1ecfng, th\u1ee7y ph\u00e2n ch\u00fang trong \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh, t\u1ea1o th\u00e0nh sol th\u00f4ng qua ng\u01b0ng t\u1ee5 h\u00f3a h\u1ecdc v\u00e0 t\u1ea1o th\u00e0nh silica gel c\u00f3 c\u1ea5u tr\u00fac m\u1ea1ng ba chi\u1ec1u sau m\u1ed9t kho\u1ea3ng th\u1eddi gian. Sau khi l\u1ecdc, r\u1eeda, s\u1ea5y kh\u00f4 v\u00e0 thi\u00eau k\u1ebft, ch\u00fang ta c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c c\u00e1c h\u1ea1t nano-silicon dioxide ho\u1eb7c nano-th\u1ea1ch anh.<\/p>\n\n\n\n

14 Ph\u01b0\u01a1ng ph\u00e1p nh\u0169 t\u01b0\u01a1ng vi m\u00f4<\/h2>\n\n\n\n

Microemulsion l\u00e0 ph\u01b0\u01a1ng ph\u00e1p trong \u0111\u00f3 hai pha kh\u00f4ng t\u01b0\u01a1ng th\u00edch t\u1ea1o th\u00e0nh m\u1ed9t nh\u0169 t\u01b0\u01a1ng \u0111\u1ed3ng nh\u1ea5t d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a ch\u1ea5t ho\u1ea1t \u0111\u1ed9ng b\u1ec1 m\u1eb7t. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y s\u1eed d\u1ee5ng kho\u1ea3ng kh\u00f4ng nh\u1ecf gi\u1eefa hai pha \u0111\u1ec3 t\u1ea1o th\u00e0nh h\u1ea1t nh\u00e2n d\u01b0\u1edbi s\u1ef1 h\u01b0\u1edbng d\u1eabn c\u1ee7a ngu\u1ed3n silicon v\u00e0 thu \u0111\u01b0\u1ee3c c\u00e1c h\u1ea1t silica ho\u1eb7c th\u1ea1ch anh h\u00ecnh c\u1ea7u sau khi x\u1eed l\u00fd nhi\u1ec7t. Do kh\u00f4ng gian h\u1ea1n ch\u1ebf cho qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh v\u00e0 ph\u00e1t tri\u1ec3n, c\u00e1c h\u1ea1t silica t\u1ea1o ra theo ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf v\u00e0 kh\u00f4ng d\u1ec5 k\u1ebft t\u1ee5.<\/p>","protected":false},"excerpt":{"rendered":"

B\u1ed9t silicon h\u00ecnh c\u1ea7u l\u00e0 v\u1eadt li\u1ec7u quan tr\u1ecdng trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p, \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao v\u00ec c\u00e1c t\u00ednh ch\u1ea5t v\u00e0 \u1ee9ng d\u1ee5ng \u0111\u1ed9c \u0111\u00e1o c\u1ee7a n\u00f3. Vi\u1ec7c s\u1ea3n xu\u1ea5t n\u00f3 li\u00ean quan \u0111\u1ebfn nhi\u1ec1u k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh ph\u01b0\u01a1ng ph\u00e1p v\u1eadt l\u00fd v\u00e0 ph\u01b0\u01a1ng ph\u00e1p h\u00f3a h\u1ecdc. N\u00f3 [\u2026]<\/p>","protected":false},"author":2,"featured_media":14852,"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-14849","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news"],"yoast_head":"\nSpherical Silicon Powder: 14 Proven Methods to Achieve the Perfect Shape - 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