Title:
HIGH-STRENGTH AND HIGH-MODULUS POLYVINYL ALCOHOL FIBER HAVING EXCELLENT HOT-WATER RESISTANCE AND PRODUCTION OF SAID FIBER
Document Type and Number:
Japanese Patent JPH01156517
Kind Code:
A
Abstract:
PURPOSE:To obtain the title fiber useful for the reinforcement of rubber such as tire cord, V-belt or hose or as a rope, conveyor belt, fishing net, etc., by spinning a dope of a PVA polymer having high polymerization degree and drawing the obtained fiber under specific condition. CONSTITUTION:The objective fiber having a tensile strength of >=15g/d, preferably >=20g/d, an elastic modulus of >=250g/d, preferably >=300g/d, a hot-water resistance of >=120 deg.C, preferably >=130 deg.C and a steam resistance index of >=50, preferably >=60 can be produced by spinning a dope of a PVA polymer having a polymerization degree of >=1,500, preferably >=3,500, drawing the obtained fiber at a draw ratio of >=3, preferably 3.5-7, treating the drawn fiber with a crosslinking agent (e.g., hydroperoxide) and subjecting to a dry-heat treatment at a draw ratio of >=3.
Inventors:
SUZUKI MITSUO
MIZUNO MASAHARU
MIZUNO MASAHARU
Application Number:
JP31162887A
Publication Date:
June 20, 1989
Filing Date:
December 09, 1987
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
D01F6/14; D01F11/04; (IPC1-7): D01F6/14; D01F11/04