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Friction material composition, and friction material and friction member using said friction material composition

A friction material and composition technology, which is applied to friction linings, gear shifting mechanisms, chemical instruments and methods, etc., can solve the problems of reduced thermal conductivity, increased brake vibration, and inability to diffuse heat at the friction interface, and achieves less brake vibration. Effect

Inactive Publication Date: 2017-08-01
JAPAN BRAKE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the thermal conductivity of the friction material is lowered, then the thermal conductivity is lowered in the composition that does not contain copper, so that there is a problem that the heat at the friction interface cannot be diffused when braking at a high temperature, because the wear amount of the friction material increases or does not The occurrence of brake vibration due to uniform temperature rise will increase

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～17 and comparative example 1～3

[0066] (Manufacturing of disc brake pads)

[0067] The materials were blended according to the blending ratios shown in Tables 1-3, and the friction material compositions of Examples 1-17 and Comparative Examples 1-3 were obtained. The blending ratios in the table are % by mass. The steel fibers used in Examples and Comparative Examples used "Q0-160" (curled, fiber length 300-2500) manufactured by SINOMA Corporation. mu m, the average fiber diameter is 58 mu m). In addition, the fiber length was measured by measuring the fiber length of 100 fibers using the microscope manufactured by Keyence Corporation. The average fiber diameter measured the fiber diameters of 50 fibers using a microscope manufactured by Keyence Co., Ltd., and made the average value the average fiber diameter.

[0068] The friction material composition was mixed using a Ladyge mixer (manufactured by Mazubo Corporation, trade name: Ladyge mixer M20), and the resulting mixture was preformed with a press mo...

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Abstract

Provided are: a friction material composition exhibiting minimal brake vibration in high-temperature braking when used in a friction material such as a vehicular disk brake pad in cases in which the friction material composition does not contain high-environmental-impact copper, or contains copper in a small amount of 0.5 mass% or less; and a friction material obtained by molding this composition. A friction material composition including a binder, an organic filler, an inorganic filler, and a fiber base material, wherein the friction material composition does not contain copper as an element or has a copper content of 0.5 mass% or less, and contains 2-5 mass% of steel fibers having a fiber length of 2,500 um or less.

Description

technical field [0001] The present invention relates to a friction material composition suitable for friction materials such as disc brake pads used for braking of automobiles and the like, and to a friction material using the friction material composition. Background technique [0002] In automobiles and the like, friction materials such as disc brake pads and brake pads are used for braking the vehicle. The friction material plays the role of braking by rubbing against the butt (opposite) materials such as the disc rotor and the brake drum. Therefore, the friction material is required to have good friction coefficient, wear resistance (long life of the friction material), strength, sound vibration (not easy to produce brake squeal or abnormal noise), etc. The coefficient of friction is required to be stable and independent of vehicle speed, deceleration or brake temperature. [0003] In addition, in recent years, copper used in friction materials has been scattered in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14F16D69/02
CPCF16D69/026F16D2200/0069F16D2200/0086C09K3/14F16D69/027F16D69/028C08J2300/24C08L61/34F16D69/02F16D69/023F16D2200/0013F16D2200/0021F16D2200/003F16D2200/0039F16D2200/0065F16D2200/0073F16D2250/0023F16D2250/0046F16D2250/0092
Inventor 海野光朗光本真理
Owner JAPAN BRAKE IND CO LTD
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