Friction material composition, friction material, and friction member

A technology of friction materials and compositions, applied in the direction of friction linings, other chemical processes, chemical instruments and methods, etc., can solve problems such as high movement, and achieve excellent wear resistance

Inactive Publication Date: 2017-05-31
JAPAN BRAKE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, copper-containing friction materials contain copper in the wear powder generated during braking, which implies the possibility of causing pollution of rivers, lakes, and oceans, etc., so actions to restrict their use are increasing.

Method used

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  • Friction material composition, friction material, and friction member
  • Friction material composition, friction material, and friction member
  • Friction material composition, friction material, and friction member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~39 and comparative example 1~2

[0064] (Manufacturing of disc brake pads)

[0065] The materials were blended according to the blending ratios shown in Tables 1 to 4 to obtain the friction material compositions of Examples 1 to 39 and Comparative Examples 1 to 2. This friction material composition was mixed in a Reddy Ge mixer (manufactured by Matsubo Co., Ltd., trade name: Reddy Ge Mikisa M20), and the resulting mixture was preformed with a molding press (manufactured by Oji Machinery Co., Ltd.). In addition, the compounding ratio in a table is weight%. The obtained preform was molded together with an iron lining metal (manufactured by Hitachi Automobile System Co., Ltd.) at a molding temperature of 140 to 160° C., a molding pressure of 30 MPa, and a molding time of 5 minutes, using a molding press (three Manufactured by Seiko Co., Ltd.) Heated and pressurized. The obtained molded product was heat-treated at 200° C. for 4.5 hours, ground using a rotary table grinder, and subjected to scorch treatment at 5...

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Abstract

Provided are a friction material composition, friction material, and friction member that have excellent fade resistance and abrasion resistance at high temperatures despite not containing copper which has a high environmental burden or containing 0.5 mass% or less of copper. This friction material composition is configured to be a friction material composition that includes a binding agent, an organic filling material, an inorganic filling material, and a fiber substrate, does not include copper as an element in the friction material composition or contains 0.5 mass% or less of copper, and contains one or more types of inorganic filling material selected from -alumina having an average particle size of 10nm to 50 [mu]m, dolomite having an average particle size of 1-20 [mu]m, calcium carbonate having an average particle size of 1-20 [mu]m, magnesium carbonate having an average particle size of 1-20 [mu]m, manganese dioxide having an average particle size of 1-20 [mu]m, zinc oxide having an average particle size of 10 nm to 1 [mu]m, triiron tetraoxide having an average particle size of 1.0 [mu]m or less, cerium oxide having an average particle size of 0.5-5 [mu]m, and zirconia having an average particle size of 5-50 nm.

Description

technical field [0001] The present invention relates to a friction material composition suitable for friction materials such as disc brake pads used in braking of automobiles, and more particularly to an asbestos-free friction material composition that does not contain asbestos. In addition, it also relates to a friction material and a friction member using the friction material composition. Background technique [0002] In automobiles, friction materials such as disc pads, brake linings, and the like are used for braking thereof. The friction material exerts the function of braking by friction with the facing material of the disc rotor, brake drum, etc. Therefore, the friction material is required to have a good friction coefficient, wear resistance (long life of the friction material), strength, vibration damping property (brake noise hardly occurs), and the like. The coefficient of friction is required to be stable regardless of vehicle speed, deceleration or brake temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14F16D69/02
CPCF16D69/026F16D2200/0069C09K3/149F16D69/028F16D69/02F16D69/0408F16D2069/0466F16D2200/0017F16D2200/0021F16D2200/003F16D2200/0039F16D2200/0052F16D2200/0065F16D2200/0086
Inventor 海野光朗光本真理
Owner JAPAN BRAKE IND CO LTD
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