FRICTION MATERIAL COMPOSITION, FRICTION MATERIAL OBTAINED FROM SAME, AND FRICTION MEMBER

Title:

FRICTION MATERIAL COMPOSITION, FRICTION MATERIAL OBTAINED FROM SAME, AND FRICTION MEMBER

Document Type and Number:

WIPO Patent Application WO/2010/140265

Kind Code:

A1

Abstract:

A friction material composition comprising a binder, fibrous base materials, an abrasive material, an inorganic filler, and an organic filler. The composition further contains a specific amount of zinc. The fibrous base materials include a specific amount of at least one fibrous base material selected from cellulose fibers and fire-resistant fibers and a specific amount of iron-based fibers as another fibrous base material. The composition contains 1 wt.% or less inorganic abrasive material having a Mohs hardness of 8 or higher and a particle diameter of 1 µm or larger as the abrasive material. This friction material composition gives a brake pad for passenger cars which less attacks mating materials than conventional products, has a high coefficient of friction during braking when repeatedly used for braking in high-speed traveling, and can be inhibited from wearing or unevenly wearing. Also provided are a friction material and a friction member both obtained from the composition.

Inventors:

UNNO MITSUO
ONO MANABU
KIKUDOME TAKASHI

Application Number:

PCT/JP2009/063946

Publication Date:

December 09, 2010

Filing Date:

August 06, 2009

Export Citation:

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Assignee:

HITACHI CHEMICAL CO LTD (JP)
UNNO MITSUO
ONO MANABU
KIKUDOME TAKASHI

International Classes:

C09K3/14; C08J5/14; F16D69/02

Domestic Patent References:

WO2004069954A1	2004-08-19
WO2004069954A1	2004-08-19

Foreign References:

JP2004231965A	2004-08-19
JPH07109362A	1995-04-25
JPH0226923A	1990-01-29
JP2002155267A	2002-05-28
JP2000319635A	2000-11-21
JP2006206785A	2006-08-10
JP2007254564A	2007-10-04
JP2009131993A	2009-06-18
JP2009131996A	2009-06-18
JP2009131999A	2009-06-18

Other References: