Title:
DISC BRAKE PAD
Document Type and Number:
WIPO Patent Application WO/2021/065797
Kind Code:
A1
Abstract:
[Problem] To provide a disc brake pad which is provided with a friction material having a scorch-treated friction surface, and is capable of obtaining a sufficient braking effect while preventing a fade phenomenon at the initial stage of use of the disc brake pad. [Solution] In a disc brake pad provided with a friction material having a friction surface that has received a heat history by scorch treatment, a part having a large heat history of scorch treatment and a part having a relatively small heat history are mixed on the friction surface. When A is a mass reduction rate when thermogravimetric analysis at 500°C is performed inside a friction material that has not received the heat history of scorch treatment, B1 is a mass reduction rate when thermogravimetric analysis at 500°C is performed on a part of the friction surface having the largest heat history of the scorch treatment, and B2 is a mass reduction rate when thermogravimetric analysis at 500°C is performed on a part of the friction surface having a relatively small heat history of the scorch treatment relative to the part having the largest heat history of the scorch treatment, the following expression is satisfied. Expression: 30 ≤ B1/A x 100 ≤ 90 50 ≤ B2/A x 100 B2/A x 100 - B1/A x 100 ≤ 60
Inventors:
KIMURA EIJI (JP)
YAGUCHI MITSUAKI (JP)
HATTORI YASUKI (JP)
YAGUCHI MITSUAKI (JP)
HATTORI YASUKI (JP)
Application Number:
PCT/JP2020/036627
Publication Date:
April 08, 2021
Filing Date:
September 28, 2020
Export Citation:
Assignee:
NISSHINBO BRAKE INC (JP)
International Classes:
C08J5/14; F16D65/092; F16D69/00
Foreign References:
JPH0989023A | 1997-03-31 | |||
JPS58219241A | 1983-12-20 | |||
JPH09136971A | 1997-05-27 | |||
JPH10318307A | 1998-12-04 | |||
JP2008309174A | 2008-12-25 | |||
JPH09136971A | 1997-05-27 | |||
JPH10318307A | 1998-12-04 | |||
JP2015051027A | 2015-03-19 |
Other References:
See also references of EP 4039736A4
Attorney, Agent or Firm:
YAMAGUCHI Sakuo (JP)
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