Title:
FRICTION MATERIAL
Document Type and Number:
WIPO Patent Application WO/2017/061373
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a friction material used in disc brake pads, obtained by molding an NAO type friction material composition that does not contain a copper component, which has good wear resistance after being subjected to a history of high temperatures and high loads, and which has a highly stable braking effect. In order to solve such problem, for a composition for friction material molding, used is a composition comprising: with respect to the total amount of the friction material composition, 10 to 40 wt% of monoclinic zirconium oxide having an average particle size of 1 to 8 μm, serving as an inorganic friction modifier; with respect to the total amount of the friction material composition, 1.5 wt% or more of resilient graphitic carbon, serving as a carbonaceous lubricant; and with respect to the total amount of the friction material composition, 2 to 8 wt%, in total, of calcined coke and said graphitic carbon, in which the ratio by weight of said resilient graphitic carbon and said calcined coke is 4:6 to 8:2.
Inventors:
YAGUCHI MITSUAKI (JP)
KAJI SHINYA (JP)
IWAI TOMOMI (JP)
KAJI SHINYA (JP)
IWAI TOMOMI (JP)
Application Number:
PCT/JP2016/079277
Publication Date:
April 13, 2017
Filing Date:
October 03, 2016
Export Citation:
Assignee:
NISSHINBO BRAKE INC (JP)
International Classes:
C09K3/14; F16D69/02
Domestic Patent References:
| WO2015072444A1 | 2015-05-21 | |||
| WO2015098434A1 | 2015-07-02 |
Foreign References:
| CN103045162A | 2013-04-17 | |||
| CN104847818A | 2015-08-19 | |||
| CN103160243A | 2013-06-19 |
Other References:
See also references of EP 3360943A4
Attorney, Agent or Firm:
FUNAKOSHI Koko et al. (JP)
Download PDF: