发明名称 |
Process for preparing a carbon fiber of high strength |
摘要 |
A carbon fiber of high strength is disclosed, each filament of which is substantially circular in its cross-section but which has circumferential ruggedness which extends in parallel to an axis of the filament to form pleats. The ruggedness has a depth of more than 0.1 mu m. The carbon fiber is prepared by extruding a spinning solution of an aqueous polyacrylonitrile/pure zinc chloride solution of a specified polymer content into a coagulating bath at a specified draft ratio, followed by washing, drying and stretching at a total stretching ratio of 10-20 folds to form a precursor which is then subjected to conventional stabilizing and carbonizing steps.
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申请公布号 |
US4925604(A) |
申请公布日期 |
1990.05.15 |
申请号 |
US19850787428 |
申请日期 |
1985.10.15 |
申请人 |
NIKKISO CO., LTD. |
发明人 |
OHSAKI, TAKASHI;IMAI, KOICHI;MIYAHARA, NAOMASA |
分类号 |
D01F6/18;D01F9/14;D01F9/22 |
主分类号 |
D01F6/18 |
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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