POLYMER ALLOY FIBER AND PROCESS THEREFOR

摘要

Ultrahigh tenacity, ultrahigh modulus fibers are provided. The fibers are prepared by dissolving a mixture of poly(phenyleneterephthalamide) polymer with an inherent viscosity of at least 5 and a regularly ordered aromatic-aliphatic copolymer with an inherent viscosity of at least 2 in concentrated sulfuric acid to form a spinning solution, which solution is subsequently subject to extrusion by a known per se dry-jet spinning process.