Title:
FRICTION MATERIAL COMPOSITION, AND FRICTION MATERIAL AND FRICTION MEMBER USING FRICTION MATERIAL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2017/109893
Kind Code:
A1
Abstract:
Provided are: a friction material composition by the usage of which a friction material having a high static friction coefficient, excellent crack resistance, and excellent abrasion resistance can be provided even when the contained amounts of copper and copper alloys are low; and a friction material and a friction member using the friction material composition. The friction material composition contains a binder, an organic filler, an inorganic filler, and a fibrous base material, wherein: elemental copper is not contained or the contained percentage of copper is 0.5 mass% or less; and, particularly, the fibrous base material contains fibrillated acrylic fibers and fibrillated aramid fibers as essential organic-fiber components, of which the total contained amount is 3-10 mass%, the contained ratio of the fibrillated acrylic fibers with respect to the fibrillated aramid fibers being 4:6 to 7:3.
Inventors:
BABA KAZUYA (JP)
NAGAYOSHI TERUYUKI (JP)
NAGAYOSHI TERUYUKI (JP)
Application Number:
PCT/JP2015/086011
Publication Date:
June 29, 2017
Filing Date:
December 24, 2015
Export Citation:
Assignee:
HITACHI CHEMICAL CO LTD (JP)
International Classes:
C09K3/14; F16D69/02
Domestic Patent References:
| WO2012066964A1 | 2012-05-24 |
Foreign References:
| JP2002285143A | 2002-10-03 | |||
| JP2015074716A | 2015-04-20 | |||
| JP2008503660A | 2008-02-07 | |||
| JPH03237183A | 1991-10-23 |
Attorney, Agent or Firm:
SUENARI, Mikio (JP)
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