Title:
FRICTION MEMBER, FRICTION MATERIAL COMPOSITION, FRICTION MATERIAL, AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2020/183664
Kind Code:
A1
Abstract:
The present invention provides: a friction member having a friction material that (1) has a stable friction coefficient in a wide frequency band from low frequency to high frequency, making brake squeal and abnormal sounds less likely to occur, and (2) has a high friction coefficient, even though the friction material does not contain copper, or else has a copper content of less than 0.5 mass% as copper element; a friction material composition capable of providing the friction material; the friction material; and a vehicle equipped with the friction member or the friction material. Specifically, the friction member has a friction material and a back metal, wherein the friction material: does not contain copper, or else has a copper content of less than 0.5 mass% as copper element; substantially does not contain substances having a Mohs hardness exceeding 6.4; and contains wollastonite as a mineral fiber.
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Inventors:
YAZAWA YUSUKE (JP)
MAGARA AKIHITO (JP)
MAGARA AKIHITO (JP)
Application Number:
PCT/JP2019/010339
Publication Date:
September 17, 2020
Filing Date:
March 13, 2019
Export Citation:
Assignee:
HITACHI CHEMICAL CO LTD (JP)
International Classes:
F16D69/02; C09K3/14
Domestic Patent References:
| WO2004109138A1 | 2004-12-16 |
Foreign References:
| JPH09291954A | 1997-11-11 | |||
| JP2015059193A | 2015-03-30 |
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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