发明名称 |
Heat and chemical resistant acrylic short fibers without spinning |
摘要 |
<p>A new, pulp-like, acrylic short fiber having excellent heat- and chemical-resistance is provided. The fiber has a thickness distribution of 0.1 mu m to 50 mu m, a length distribution of 1 mm to 20 mm, and a thermal transition temperature (Tg) of above 200 DEG C. The fiber is produced by heating a mixture of polyacrylonitrile and water of about 5% to 100% by weight to temperatures above hydration-melting temperature under seal to an amorphous melt; cooling the resulting amorphous melt to temperatures between the melting and the solidifying temperatures of the melt to form a supercooled melt; extruding the resulting supercooled melt to give extrudates; heat-stabilizing the resulting extrudates at temperatures between 180 DEG C. and 300 DEG C. for 1 minute to 4 hours after drying and drawing; and cutting and beating the resulting heat-stabilized extrudates into an appropriate size.</p> |
申请公布号 |
GB2254823(B) |
申请公布日期 |
1995.03.29 |
申请号 |
GB19910027072 |
申请日期 |
1991.12.20 |
申请人 |
* KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY |
发明人 |
HAN SIK * YOON;TAE WON * SON;BYUNG CHUL * KIM;BYUNG GHYL * MIN;JAE WAN * CHO;CHUL JOO * LEE |
分类号 |
D01D5/11;D01D5/42;D01F6/18;D01F6/38;D01F6/40;D02G3/02;D02J1/22;D21H13/18;(IPC1-7):D01D5/10 |
主分类号 |
D01D5/11 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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