Non-asbestos friction-material composition, and friction material and friction member using same

Patent metadata

Field	Value
Publication number	US-9464683-B2
Application number	US-201113819729-A
Country	US
Kind code	B2
Filing date	Nov 7, 2011
Priority date	Nov 19, 2010
Publication date	Oct 11, 2016
Grant date	Oct 11, 2016

Abstract

A non-asbestos frictional material composition is provided, which is capable of provide a frictional material with excellent shear strength, anti-crack properties, and abrasion resistance, even with the reduced content of copper. Furthermore, a frictional material and a friction member formed by using this non-asbestos frictional material composition are provided. The non-asbestos frictional material composition containing a binder, an organic filler, an inorganic filler, and a fiber base material includes: copper in a content of 0.5 mass % or less as a copper element; a metal other than copper and copper alloy in a content of 0.5 mass % or less; an acrylic elastomer-dispersed phenol resin as the binder in a content of 7-15 mass %; and Ca(OH) 2 and/or CaO as the inorganic filler in a content of 1-5 mass %.

First claim

The invention claimed is:

1. A non-asbestos frictional material composition containing:
a binder comprising an acrylic elastomer-dispersed phenol resin in an amount of 7-15 mass %;
an organic filler;
an inorganic filler comprising at least one of CaO and Ca(OH) 2 in an amount of 1-5 mass %; and
a fiber base material comprising copper in an amount of 0.5 mass % or less as a copper element and a metal other than copper and copper alloy in an amount of 0.5 mass % or less.

2. A friction member being formed from a frictional material formed from the non-asbestos frictional material composition according to claim 1 and a backing plate.

3. A frictional material comprising:
a molded shape; and
a composition comprising:
an acrylic elastomer-dispersed phenol resin in an amount of 7-15 mass %;
an organic filler;
an inorganic filler comprising at least one of CaO and Ca(OH) 2 in an amount of 1-5 mass %; and
a fiber base material comprising copper in an amount of 0.5 mass % or less as a copper element and a metal other than copper and copper alloy in an amount of 0.5 mass % or less.

Assignees

• Baba Kazuya
• Unno Mitsuo
• Kikudome Takashi
• Hitachi Chemical Co Ltd

Inventors

• Baba Kazuya
• Unno Mitsuo
• Kikudome Takashi

Classifications

• F16D65/092

  for axially-engaging brakes, e.g. disc brakes · CPC title

• F16D69/028 Primary

  containing fibres · CPC title

• F16D69/026 Primary

  containing fibres · CPC title

• C09K3/14 Primary

  Anti-slip materials; Abrasives {(products specifically intended for the fabrication of abrasive tools, blocks or papers, or for operations of the kind of sand-blasting and barrelling B24B31/14, B24C1/00; polishing compositions containing abrasive or grinding agents C09G1/02; friction compositions for brakes or clutches F16D69/02; polishing of semi-conductors H10P52/40)} · CPC title