Friction material, composite brake shoe and preparation method

A technology of friction materials and synthetic brake shoes, applied in friction linings, mechanical equipment, etc., can solve problems such as unstable friction performance, easy breakage of friction bodies, metal inlays, etc., achieve good impact resistance, low molding temperature, and improved The effect of metal inlays

Active Publication Date: 2021-05-28
SHANDONG GOLD PHOENIX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies and defects in the prior art, the present invention provides a friction material, a synthetic brake shoe and a preparation method, which are used to solve the problem of unstable friction performance of the existing friction material, easy breakage of the friction body, loss of blocks, and severe metal embedding. question

Method used

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  • Friction material, composite brake shoe and preparation method
  • Friction material, composite brake shoe and preparation method
  • Friction material, composite brake shoe and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The friction material includes the following raw material components and parts by volume: 6 parts of binder, 40 parts of rubber powder, 15 parts of reinforcing fiber, 8 parts of friction increasing filler, 25 parts of friction reducing filler, and 6 parts of other fillers.

[0062] The binder is nylon modified phenolic resin; the rubber powder includes 15 parts of powdered nitrile rubber, 15 parts of powdered styrene-butadiene rubber and 10 parts of ethylene-propylene powdered rubber; the reinforcing fiber includes 3 parts of aramid pulp, 5 parts of mineral fiber, 3 parts of potassium titanate whiskers and 4 parts of acicular wollastonite; friction-increasing fillers include 3 parts of γ-alumina, 2 parts of heavy magnesia and 3 parts of zircon powder; friction-reducing fillers include 8.5 parts of coke, 5.5 parts Synthetic graphite, 5 parts of natural spherical graphite, 3.5 parts of carbon black, 1 part of antimony sulfide, 1 part of ferrous sulfide and 0.5 parts of pol...

Embodiment 2

[0072] The friction material includes the following raw material components and parts by volume: 26 parts of binder, 10 parts of rubber powder, 5 parts of reinforcing fiber, 21 parts of friction increasing filler, 20 parts of friction reducing filler, and 18 parts of other fillers;

[0073] Among them, the binder is nylon modified phenolic resin; the rubber includes 1 part of powdered nitrile rubber, 2 parts of powdered styrene-butadiene rubber and 7 parts of ethylene-propylene powdered rubber; the reinforcing fiber includes 2 parts of aramid pulp, 1 part of mineral fiber, 1 part of potassium titanate whisker and 1 part of acicular wollastonite; friction-increasing fillers include 3 parts of γ-alumina, 15 parts of heavy magnesia and 3 parts of zircon powder; anti-friction fillers include 8 parts of coke, 3 parts Synthetic graphite, 2 parts of natural spherical graphite, 1 part of carbon black, 3 parts of antimony sulfide, 2 parts of ferrous sulfide and 1 part of polytetrafluoro...

Embodiment 3

[0076] The friction material includes the following raw material components and parts by volume: 13 parts of binder, 30 parts of rubber powder, 15 parts of reinforcing fiber, 10 parts of friction increasing filler, 15 parts of friction reducing filler, and 17 parts of other filler;

[0077] Among them, the binder is nylon modified phenolic resin; the rubber powder includes 6 parts of powdered nitrile rubber, 14 parts of powdered styrene-butadiene rubber and 10 parts of ethylene-propylene powdered rubber; the reinforcing fiber includes 3 parts of aramid pulp and 3 parts of mineral fiber , 4 parts of potassium titanate whiskers and 5 parts of acicular wollastonite; friction-increasing fillers include 2 parts of γ-alumina, 4 parts of heavy magnesia and 4 parts of zircon powder; anti-friction fillers include 4 parts of coke, 2.5 1 part of synthetic graphite, 2 parts of natural spherical graphite, 1.5 parts of carbon black, 2 parts of antimony sulfide, 2 parts of ferrous sulfide and...

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Abstract

A disclosed friction material comprises the following raw material components in parts by volume: 6-26 parts of a binder, 10-40 parts of rubber powder, 5-30 parts of reinforced fibers, 5-21 parts of a friction increasing filler, 10-25 parts of an anti-friction filler and 5-36 parts of other fillers, wherein the reinforced fibers are a composition of aramid pulp, mineral fibers, potassium titanate whiskers and needle-like wollastonite, the antifriction filler is a composition of a carbon material, metal sulfide and polytetrafluoroethylene powder, and the other fillers comprise fluorite, flaky iron oxide, mica and calcium hydroxide. According to the friction material, coefficient decline and metal inlay under the humid working condition are remarkably improved, the brake service life of the composite brake shoe prepared from the friction material is prolonged, the mechanical strength of the composition brake shoe is improved, the invention further provides a preparation method of the composite brake shoe, toluene organic solvents are not used, the environmental protection property is effectively improved, and the working environment of workers is optimized.

Description

technical field [0001] The invention relates to the technical field of brake shoes for rail transit, in particular to a friction material, a synthetic brake shoe and a preparation method. Background technique [0002] Friction material is a component material used in power machinery that relies on friction to perform braking and transmission functions. Brake shoes are an important part of the braking system of rail transit vehicles. Driven by the braking pressure, they contact the wheel tread through friction materials to generate frictional resistance and realize the speed control of urban rail transit vehicles. [0003] With the rapid development of our country's economy and the rapid increase of railway passenger and cargo transportation, the high-speed railway transportation has become an inevitable development trend. The high-speed train puts forward higher requirements on the braking system. More importantly, railway vehicles will generate high heat during the brakin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L9/06C08L23/16C08L61/14C08L77/10C08K13/04C08K7/04C08K7/08C08K3/04F16D69/02
CPCC08L9/02C08L9/06C08L23/16F16D69/026C08L2201/08C08L2205/035C08L61/14C08L77/10C08K13/04C08K7/04C08K7/08C08K3/04
Inventor 种详远甄明晖仇溢孟宪华
Owner SHANDONG GOLD PHOENIX
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