ZINC OXIDE WHISKER-CONTAINING RESIN COMPOSITION, GEAR MOLDING AND GEAR BLANK MOLDING OBTAINED BY MOLDING THE SAME, AND GEAR, GEAR BLANK, SPEED REDUCER, AND POWER STEERING APPARATUS USING GEAR MOLDING AND GEAR BLANK MOLDING

摘要

PROBLEM TO BE SOLVED: To provide a zinc oxide whisker-containing resin composition which endures high temperature environment and can maintain high rigidity for a long time and to provide a gear molding, a gear blank molding, a gear, and a gear blank using the zinc oxide whisker-containing resin composition; a speed reducer using the same; and also a power steering apparatus using such a speed reducer.;SOLUTION: The zinc oxide whisker-containing resin composition is obtained by blending a resin component (A) including a polyether sulfone, a polyarylene sulfide, and an epoxy group-containing -olefin-based copolymer with a zinc oxide-based whisker(B) with a mass ratio (A:B) of 92:8 to 99.9:0.1. A mass ratio of the total amount of the polyether sulfone and the polyarylene sulfide to an amount of the epoxy group-containing -olefin-based copolymer is 70:30 to 95:5, and a mass ratio of the polyether sulfone to the polyarylene sulfide is 50:50 to 90:10.;COPYRIGHT: (C)2011,JPO&INPIT