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Friction material composition, friction material obtained from same, and friction member

A friction material and composition technology, applied in the field of friction material composition and friction material, can solve problems such as insufficiency, achieve the effects of small aggressiveness, high friction coefficient, and inhibiting uneven wear of friction blocks

Active Publication Date: 2012-05-09
HITACHI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effect of improving fading characteristics in the aforementioned high-speed range (vehicle speed above 200 km / h) is still insufficient compared with the characteristics of LS materials.

Method used

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  • Friction material composition, friction material obtained from same, and friction member
  • Friction material composition, friction material obtained from same, and friction member
  • Friction material composition, friction material obtained from same, and friction member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0108] The friction material composition of the present invention will be further described using examples.

[0109] (Manufacturing of friction pads for disc brakes)

[0110] The materials were compounded according to the compounding ratios shown in Tables 1 to 5 to obtain the friction material compositions of Examples 1 to 20 and Comparative Examples 1 to 4.

[0111] In addition, the method of coating cashew powder with IR rubber is as follows. First, 100 parts by mass of cashew nut powder and 10 parts by mass of liquid IR rubber were pressurized and kneaded for 3 minutes under a pressure of 0.49 MPa using a pressurized kneader (manufactured by Moriyama Seisakusho Co., Ltd.).

[0112] The friction material composition was mixed using a Lodige mixer (manufactured by Matsubo Co., Ltd., trade name: Lodige mixer M20), the mixture was preformed using a molding press (manufactured by Oji Machinery Industry Co., Ltd.), and the mixture was preformed using a molding press ( Manufact...

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PUM

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Abstract

Provided is 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 [mu]m 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.

Description

technical field [0001] The present invention relates to a friction material composition suitable for friction materials such as disc brake pads and brake linings used for braking of automobiles and the like, and 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 linings are used for braking. The friction material exerts a braking effect by rubbing against a material to be used for braking, such as a disc rotor, a brake drum, and the like. Therefore, it requires not only a high coefficient of friction and stability of the coefficient of friction, but also a disk rotor that is not easy to grind (rotor wear), which is difficult to generate squeal (squeak characteristic), and a long life of the friction block (friction block lifetime), etc. [0003] In addition, in recent years, friction materials are also required to have a high friction coefficient even u...

Claims

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Application Information

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IPC IPC(8): C09K3/14C08J5/14F16D69/02
CPCF16D69/026F16D2200/0069F16D2200/0086F16D2069/002F16D69/028B29K2401/00B29K2427/18B29K2505/08B29K2505/12B29K2509/02B29K2511/00B29K2705/00B29K2995/0016B29L2031/16Y10T428/12035Y10T428/12951Y10T428/31703C08J5/00C09K3/14F16D69/02B29C70/78C08L61/04
Inventor 海野光朗小野学菊留高史
Owner HITACHI CHEM CO LTD
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