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Friction material

A technology of friction materials and particles, which is applied to friction linings, mechanical equipment, and other chemical processes, can solve problems such as easy generation of abnormal noise, achieve suppression of aggressiveness, reduce creep abnormal noise, and ensure anti-braking attenuation Effect

Active Publication Date: 2020-04-10
AKEBONO BRAKE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] On the other hand, it is known that the characteristics of the copper component are indispensable in the friction material used for disc brake pads, and the exclusion of the copper component from the friction material will easily cause abnormal noise

Method used

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  • Friction material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～11

[0082] (Examples 1-11, Comparative Examples 1-4)

[0083]

[0084] The raw materials of the friction material compounding composition shown in Table 1 were mixed for 4 minutes with a mixer, the mixture was put into a mold, and pressurized at a pressure of 20 MPa for 10 seconds to produce a preform.

[0085] The obtained preform was put into a thermoforming mold, the metal plates coated with the adhesive in advance were stacked, and heat compression molding was performed at a pressure of 40 MPa and a molding temperature of 150° C. for 5 minutes to produce a heat compression molded body.

[0086] The obtained heat-compression molded body was heat-treated at 230° C. for 3 hours, polished, and painted to produce the friction materials of Examples 1-11 and Comparative Examples 1-4.

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Abstract

The present invention addresses the problem of providing a friction material which, regardless of the presence or absence of a copper component, is capable of reducing creep noise, securing sufficientfade resistance, and suppressing hostility to mating material, even when light-load braking is repeated a certain number of times or more. The present invention relates to a friction material containing granulated hematite calcined particles having an average diameter of 25 to 300 [mu]m and a pore volume of 30 to 300 mm3 / g.

Description

technical field [0001] The present invention relates to a friction material used for disc brake pads, brake linings and clutch wipers of automobiles, railway vehicles and industrial machinery. Background technique [0002] With recent improvements in performance and speed of vehicles, the load on brakes has increased. In addition, when weight reduction of vehicles is required, friction materials are required to have anti-brake fading and wear resistance at high temperatures. [0003] Therefore, in Patent Document 1, for the purpose of maintaining the friction coefficient at high temperature and improving wear resistance, a brake friction material is disclosed, which is characterized in that it contains at least reinforcing fibers, a binder, a lubricating material, and a friction adjusting material. The brake friction material contains 5 to 10 mass % of steel fibers and 5 to 10 mass % of average fiber when the total amount of the brake friction material is 100 mass %. Coppe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14C01G49/06F16D69/02
CPCC01G49/06F16D69/026F16D2200/0069C01P2004/60C01P2006/14C01P2004/51C01P2004/61C01P2006/80C01P2002/30C09K3/14F16D69/027
Inventor 高田卓弥宫道素行大轮健太郎
Owner AKEBONO BRAKE IND CO LTD
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