Title:
FRICTION MATERIAL COMPOSITION, FRICTION MATERIAL AND FRICTION MEMBER
Document Type and Number:
WIPO Patent Application WO/2020/158735
Kind Code:
A1
Abstract:
The present invention provides a friction material composition which does not contain elemental antimony and does not contain elemental copper or has a copper content of less than 0.5% by mass in terms of elemental copper even if copper is contained therein, and is thus less harmful to the environment and the human body, but which still enables the achievement of a friction material that has a high static friction coefficient and a high friction coefficient during braking at high speeds and high temperatures, while exhibiting excellent wear resistance at high temperatures and not being susceptible to rust adhesion. The present invention specifically provides a friction material composition which contains a binder, an organic filler, an inorganic filler and a fiber base material, and which does not contain elemental copper or has a copper content of less than 0.5% by mass in terms of elemental copper even if copper is contained therein, and does not contain elemental antimony, while containing 5% by mass or less of iron fibers, 1-5% by mass of a zinc powder, 2.5-6% by mass of calcium hydroxide, 0.7-1.5% by mass of sodium carbonate and a silicone-containing phenolic resin.
Inventors:
MITSUMOTO MASAMICHI (JP)
OGATA YOSHIO (JP)
OYANAGI MITSUSHI (JP)
OGATA YOSHIO (JP)
OYANAGI MITSUSHI (JP)
Application Number:
PCT/JP2020/002986
Publication Date:
August 06, 2020
Filing Date:
January 28, 2020
Export Citation:
Assignee:
HITACHI CHEMICAL CO LTD (JP)
NISSAN MOTOR (JP)
NISSAN MOTOR (JP)
International Classes:
C09K3/14; F16D69/02
Domestic Patent References:
| WO2016125892A1 | 2016-08-11 |
Foreign References:
| JP2016074812A | 2016-05-12 |
Other References:
See also references of EP 3919582A4
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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