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1. (WO2017170532) IRON OXIDE PARTICLE POWDER FOR FRICTION MATERIAL

Pub. No.:    WO/2017/170532    International Application No.:    PCT/JP2017/012608
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Wed Mar 29 01:59:59 CEST 2017
IPC: C01G 49/08
C09K 3/14
F16D 69/02
Applicants: TODA KOGYO CORP.
戸田工業株式会社
Inventors: MARUYAMA, Shinsuke
丸山 伸介
WATANABE, Kozo
渡部 耕三
FUJII, Yasuhiko
藤井 泰彦
Title: IRON OXIDE PARTICLE POWDER FOR FRICTION MATERIAL
Abstract:
The present invention relates to a friction material used mainly for resin type brake pads formed by resin molding, and provides an iron oxide particle powder for friction materials, the iron oxide particle powder having excellent abrasive properties, good outgassing performance, excellent mechanical strength such that improved dispersion in resin can be expected, and a large specific surface area. The iron oxide particle powder for friction materials is characterized in that a magnetite crystal phase is a major component, primary particles have a needle-like shape, agglomerated particles have an average particle size of 10 to 150 μm, and in that the iron oxide particle powder includes 0.01 to 2.0 wt% of a heterogeneous element.