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1. (WO2017183155) FRICTION MATERIAL COMPOSITION, AND FRICTION MATERIAL AND FRICTION MEMBER EACH OBTAINED THEREFROM

Pub. No.:    WO/2017/183155    International Application No.:    PCT/JP2016/062647
Publication Date: Fri Oct 27 01:59:59 CEST 2017 International Filing Date: Fri Apr 22 01:59:59 CEST 2016
IPC: C09K 3/14
F16D 69/02
Applicants: HITACHI CHEMICAL COMPANY, LTD.
日立化成株式会社
Inventors: MATSUBA, Kazuaki
松葉 和昭
Title: FRICTION MATERIAL COMPOSITION, AND FRICTION MATERIAL AND FRICTION MEMBER EACH OBTAINED THEREFROM
Abstract:
Provided is a friction material composition that does not contain copper, which can be a cause of the pollution on rivers, lakes, oceans, etc., or contains copper in an amount of 0.5 mass% at most, and that nevertheless can give a friction material which is excellent in terms of coefficient of friction during high-speed high-load braking, wear resistance, and the property of not attacking the mating member and which is inhibited from squealing. Also provided are a friction material and a friction member which were each obtained from the friction material composition. The friction material composition comprises a binder, an organic filler, an inorganic filler, and a fibrous base, and has a copper content of 0.5 mass% or less in terms of copper element amount or contains no copper. A phenolic resin containing a silicone rubber dispersed therein is contained as some or all of the binder in an amount of 5-10 mass%, and zirconium oxide is contained as some of the inorganic filler in an amount of 20-33 mass%.