Formula of low metal friction material with addition of high resilience graphite and preparation method

Abstract

The invention discloses a formula of a low metal friction material with the addition of high resilience graphite. The low metal friction material is made from the following components of: by weight, 50 parts of boron modified phenolic resin, 25 parts of steel fiber, 200 parts of ferroferric oxide, 200 parts of strontium carbonate, 100 parts of artificial graphite, 50 parts of expanded vermiculite, 30 parts of mica, 10 parts of aramid fiber, 80 parts of a frictional powder, 70 parts of a flexible coke powder, 100 parts of barium sulfate, 50 parts of a red copper powder and 500 parts of high resilience graphite granules of 40 meshes. The invention also discloses a preparation method of the friction material based on the above formula. The beneficial technical effect of the invention is as follows: as there exist a lot of pores in the friction material and the pores vary with the change of pressure applied on the pores, the compression rate of the friction material is increased by 50%, and the friction material can mildly contact with a mating material when braking without generating resonance, so as to eliminate brake noise.

Description

technical field [0001] The invention relates to a vehicle friction material, in particular to a formula and a preparation method of a low-metal friction material added with high resilience graphite. Background technique [0002] The friction material for automobiles is a key part of automobile braking. Braking noise is one of the most complained problems by automobile users. There are many ways to solve the noise, such as chamfering the friction plate, adding sound-absorbing plates and anti-vibration plates to the steel back, However, as the friction material is worn and consumed during use, both the chamfer and the sound absorbing sheet will lose the effect of reducing noise due to wear. Contents of the invention [0003] Aiming at the problems in the background technology, the present invention proposes a formulation of a low-metal friction material added with high-resilience graphite. The relationship between various components and their weight ratios is: 50 par...

AI Technical Summary

Problems solved by technology

[0002] The friction material for automobiles is a key part of automobile braking. Braking noise is one of the most complained problems by automobile users. There are many ways to solve the noise, such as chamfering the friction plate, adding sound-absorbing plates and anti-vibration plates to the steel back, However, as the friction material wears and consumes during use, both the chamfer and the sound absorbing sheet will lose the effect of reducing noise due to wear.