Paula polyamide fiber and its manufacturing method that has superior strength

摘要

This invention relates to the making method of high strength polyamide fiber with high fatigue resistance for reinforcing rubber. In this method, the double refraction ratio of the fiber satisfies the equation nA-nB=0.5X10-3,and the double refraction ratio, n, is more than 50X10-3. The relative viscocity of the fiber, RV, is more than 4.0; the cutting strength more than 11g/d; the elongation limit more than 15%.