ABRASION RESISTANT SHEATH CORE TYPE HIGH SPECIFIC GRAVITY COMPOSITE FIBER

摘要

PROBLEM TO BE SOLVED: To obtain a high specific gravity composite fiber having a high specific gravity and a high strength, also good in abrasion resistance and easy in industrial production. ;SOLUTION: This abrasion resistant sheath core type high specific gravity composite fiber consists of a thermoplastic polymer containing ≥40 wt.% and ≤80 wt.% high density inorganic particles as a core component and a polyamide as a sheath component, and has ≥30 wt.% and ≤70 wt.% occupying ratio of the core component in the composite fiber, also ≥1.45 specific gravity, ≥4.0 g/d strength and ≥5% dry heat shrinkage at 150°C.;COPYRIGHT: (C)1998,JPO