VERY LOW CREEP, ULTRA HIGH MODULES, LOW, SHRINK HIGH, TENACITY POLYOLEFIN FIBER HAVING GOOD STRENGHT RETENTION AT HIGHT

摘要

A polyolefin shaped article, pref. polyethylene fibre has a creep rate, measured at 160 deg.F and 39150 psi load, of less than 50% of the value given by equation in which IV is intrinsic viscosity of the fibre measured in decalin at 135 deg.C in dl/g, and Modulus tensile modulus in g/den of the fibre measured by ASTM 885-81 at 100%/minute strain. The fibre has an av. mol. wt. of at least 250000, esp. at least 800000, tenacity of at least 20, esp. at least 32g/den and total fibre shrinkage of less than 2.5% measured at 135 deg.C.