Poly(arylene thioether-ketone) fibers and production process thereof.

摘要

Disclosed herein are poly(arylene thioether-ketone) fibers obtained by melt-spinning a thermoplastic material which comprises 100 parts by weight of a melt-stable poly(arylene thioether-ketone) (PTK) and optionally, up to 50 parts by weight of at least one of thermoplastic resins. The PTK has predominant recurring units of the formula, wherein the -CO- and -S- are in the para position to each other, and has a melting point, Tm of 310-380 DEG C, a residual melt crystallization enthalpy, DELTA Hmc (420 DEG C/10 min) of at least 10 J/g, a melt crystallization temperature, Tmc (420 DEG C/10 min) of at least 210 DEG C, and a reduced viscosity of 0.3-2 d l /g as determined by viscosity measurement at 25 DEG C and a polymer concentration of 0.5 g/d l in 98 percent by weight sulfuric acid. The PTK fibers of this invention have high heat resistance and strength.