H\u00ecnh 2. Quy tr\u00ecnh s\u1ea3n xu\u1ea5t v\u1ea3i th\u1ed5i tan<\/strong><\/p>\n\n\n\nQuy tr\u00ecnh c\u00f4ng ngh\u1ec7 th\u1ed5i tan: chu\u1ea9n b\u1ecb polymer \u2192 \u00e9p \u0111\u00f9n \u2192 b\u01a1m \u0111\u1ecbnh l\u01b0\u1ee3ng \u2192 l\u1eafp r\u00e1p \u0111\u1ea7u th\u1ed5i tan ch\u1ea3y \u2192 v\u1ebd ch\u1ea3y d\u00f2ng ch\u1ea3y m\u1ecbn \u2192 l\u00e0m m\u00e1t \u2192 thi\u1ebft b\u1ecb nh\u1eadn.<\/p>\n\n\n\n
Trong s\u1ed1 \u0111\u00f3, vai tr\u00f2 c\u1ee7a ch\u1ebft th\u1ed5i tan ch\u1ea3y l\u00e0 thay \u0111\u1ed5i tan ch\u1ea3y polymer ho\u1eb7c dung d\u1ecbch \u1edf tr\u1ea1ng th\u00e1i ch\u1ea3y nh\u1edbt th\u00e0nh d\u00f2ng ch\u1ea3y m\u1ecbn v\u1edbi m\u1eb7t c\u1eaft c\u1ee5 th\u1ec3 qua micropore v\u00e0 t\u1ea1o th\u00e0nh d\u00e2y t\u00f3c qua m\u00f4i tr\u01b0\u1eddng h\u00f3a r\u1eafn nh\u01b0 kh\u00f4ng kh\u00ed ho\u1eb7c t\u1eafm h\u00f3a r\u1eafn.<\/p>\n\n\n\n
V\u1eadt li\u1ec7u \u0111\u1eb7c bi\u1ec7t PP Polypropylen \u0111i v\u00e0o k\u00eanh d\u00f2ng ch\u1ea3y c\u1ee7a \u0111\u1ea7u ch\u1ebft th\u1ed5i sau khi h\u00f3a d\u1ebbo, v\u00e0 sau \u0111\u00f3 \u0111i v\u00e0o m\u00e1y tr\u1ed9n sau khi ph\u00e2n ph\u1ed1i \u0111\u1ed3ng \u0111\u1ec1u. Nhi\u1ec7t \u0111\u1ed9 cao, t\u1ed1c \u0111\u1ed9 cao v\u00e0 \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed n\u00f3ng t\u1ea1o th\u00e0nh c\u00e1c s\u1ea3n ph\u1ea9m kh\u00f4ng d\u1ec7t th\u1ed5i tan ch\u1ea3y, \u0111\u00e2y l\u00e0 v\u1eadt li\u1ec7u l\u1ecdc quan tr\u1ecdng nh\u1ea5t trong l\u1edbp gi\u1eefa c\u1ee7a m\u1eb7t n\u1ea1.<\/p>\n\n\n\n
\u0110\u1ec3 \u0111\u1ea1t \u0111\u1ebfn c\u1ea5p \u0111\u1ed9 y t\u1ebf, vi\u1ec7c x\u1ea3 \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a \u0111\u1ea7u ch\u1ebft th\u1ed5i tan ch\u1ea3y \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u ph\u1ea3i r\u1ea5t cao. Ti\u1ebfp theo, h\u00e3y t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 c\u00e1ch l\u00e0m cho \u0111\u1ea7u ch\u1ebft tan ch\u1ea3y \u0111\u01b0\u1ee3c t\u1ea1o ra.<\/p>\n\n\n\n