发明名称 |
Polybenzazole fiber and method for production thereof |
摘要 |
A polybenzazole fiber characterized by having an elastic modulus of not less than 1350 g/d and requiring not longer than 10 minutes to reduce its water content from 2.0% to 1.5%, when determined using a thermogravimetric analyzer at 110 DEG C. after moisture absorption of not less than 2.0% of a fiber, and a method for manufacturing such a polybenzazole fiber, comprising extruding a spinning dope comprising polybenzazole and a polyphosphoric acid from a spinneret to give a dope filament, and cooling the dope filament to not more than 50 DEG C., followed by coagulation and washing. According to the method of the present invention, a polybenzazole fiber showing less decrease in strength by rapid heating can be provided.
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申请公布号 |
US5993963(A) |
申请公布日期 |
1999.11.30 |
申请号 |
US19970940780 |
申请日期 |
1997.09.30 |
申请人 |
TOYO BOSEKI KABUSHIKI KAISHA |
发明人 |
TERAMOTO, YOSHIHIKO;KITAGAWA, TOORU;TANAKA, YOSHIKAZU;ISHITOBI, MICHIO |
分类号 |
D01D5/00;D01F6/74;(IPC1-7):D02G3/00 |
主分类号 |
D01D5/00 |
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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