US 12,202,771 B2Granted

Friction material

AssigneeNisshinbo Brake, Inc.

InventorsAkihiko Shimozaki, Takuto Nishikawa, Takeshi Tanabe

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Abstract

To provide the friction material for the disc brake pad manufactured by forming the NAO friction material composition, enabling to restrain the brake vibration during braking in a high temperature. The NAO friction material composition does not contain the copper component but contains, relative to the entire amount of the friction material composition, 5-9 weight % of the binder with 1-4 weight % of the silicone rubber modified phenol resin as a part of the binder, the fiber base, 1-4 weight % of a cashew dust as the organic friction modifier, 0.5-3 weight % of a fused silica with the average particle diameter of 15-40 μm as the inorganic friction modifier, and 0.1-2 weight % of the electromelting zirconium silicate beads with the average particle diameter of 10-30 μm as the lubricant.

Claims2

Dependent claims

A friction material for a disc brake pad, which is manufactured by forming a Non-Asbestos-Organic (NAO) friction material composition that does not contain a copper component but contains a binder, a fiber base, an organic friction modifier, an inorganic friction modifier, and a lubricant, wherein

said friction material composition contains
5-9 weight % of the binder relative to the entire amount of the friction material composition,
1-4 weight % of a silicone rubber modified phenol resin as a part of the binder relative to the entire amount of the friction material composition,
1-4 weight % of a cashew dust as the organic friction modifier relative to the entire amount of the friction material composition,
0.5-3 weight % of a fused silica with an average particle diameter of 15-40 μm as the inorganic friction modifier relative to the entire amount of the friction material composition, and
0.1-2 weight % of electromelting zirconium silicate beads with an average particle diameter of 10-30 μm as the inorganic friction modifier relative to the entire amount of the friction material composition.

3 more elements

Dependencies are inferred from the claim text.