コポリパラフェニレン・３，４’−オキシジフェニレン・テレフタルアミド繊維およびその製造方法

摘要

PROBLEM TO BE SOLVED: To provide a co-polyparaphenylene 3,4'-oxydiphenylene terephthalamide fiber that is excellent in tensile strengh without deteriorating tensile elongation.SOLUTION: In the production of a co-polyparaphenylene 3,4'-oxydiphenylene terephthalamide fiber, a coagulated fiber that is obtained in a coagulation process and is in a plastic state is drawn at a rate in a specific range. That is, in the production of the co-polyparaphenylene 3,4'-oxydiphenylene terephthalamide fiber, the coagulated fiber that is obtained in the coagulation process and is in the plastic state is drawn 1.2 to 1.5 times.