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Friction material composition for ceramic brake pad

A friction material and brake pad technology, applied in the field of friction material composition, can solve the problems of easy rust, unstable performance and high heat transfer of materials for brake pads

Active Publication Date: 2013-04-24
摩擦一号汽车科技(仙桃)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention mainly solves the technical problems of existing automobile brake pads such as easy rusting, high material heat transfer, unstable performance at high temperature, and low-frequency noise during braking.

Method used

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  • Friction material composition for ceramic brake pad

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: 14% of mullite ceramic fiber, 10% of sprayed aluminum silicate fiber, 10% of aramid pulp, 9% of red copper fiber, 9% of potassium titanate whisker, and 3% of nano-iron oxide according to mass percentage , aluminum hydroxide 0.8%, barite 7%, potassium feldspar 8%, chromite 3%, magnesium hydroxide 1%, zinc oxide 0.2%, graphite particles 7%, expanded graphite 6%, nitrile rubber 2 %, cashew nut shell oil modified phenolic resin 10% is put into a high-speed disperser, stirred into powder, taken out and put into a forming mold for pressing and forming, and then compounded with a steel back, put into a flat vulcanizing machine at a high temperature of 270°C, and the pressure is Under the condition of 18MPa, keep it for 15 minutes, then take out the brake pad and remove the burr to become the finished product.

Embodiment 2

[0017] Example 2: 18% of mullite ceramic fiber, 13% of sprayed aluminum silicate fiber, 10% of aramid pulp, 8% of red copper fiber, 8% of potassium titanate whisker, and 3% of nano-iron oxide according to mass percentage , aluminum hydroxide 0.8%, barite 7%, potassium feldspar 8%, chromite 3%, magnesium hydroxide 1%, zinc oxide 0.2%, graphite particles 7%, expanded graphite 6%, nitrile rubber 1 %, cashew nut shell oil modified phenolic resin 6% is put into a high-speed disperser, stirred into powder, taken out and put into a forming mold for pressing and forming, and then compounded with a steel back, put into a flat vulcanizer at a high temperature of 270°C, and the pressure is Under the condition of 18MPa, keep it for 15 minutes, then take out the brake pad and remove the burr to become the finished product.

Embodiment 3

[0018] Example 3: 16% of mullite ceramic fiber, 11.5% of sprayed aluminum silicate fiber, 11% of aramid pulp, 8.5% of red copper fiber, 8% of potassium titanate whisker, and 3% of nano-iron oxide according to mass percentage , aluminum hydroxide 0.8%, barite 9%, potassium feldspar 8%, chromite 3%, magnesium hydroxide 1%, zinc oxide 0.2%, graphite particles 7%, expanded graphite 6%, nitrile rubber 1 %, cashew nut shell oil modified phenolic resin 6% is put into a high-speed disperser, stirred into powder, taken out and put into a forming mold for pressing and forming, and then compounded with a steel back, put into a flat vulcanizer at a high temperature of 270°C, and the pressure is Under the condition of 18MPa, keep it for 15 minutes, then take out the brake pad and remove the burr to become the finished product.

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Abstract

The invention relates to a friction material composition for a ceramic brake pad, which is mainly prepared from the following components in percentage by weight: 14-18% of mullite ceramic fiber, 10-13% of adhesive spray aluminum silicate fiber, 10-12% of aramid fiber pulp, 8-9% of red copper fiber, 8-10% of potassium titanate whisker, 3-5% of nano ferric oxide, 0.8-1% of aluminum hydroxide, 7-12% of barite, 8-10% of potash feldspar, 3-5% of chromite, 1-1.5% of magnesium hydroxide, 0.2-0.5% of zinc oxide, 7-11% of graphite particle, 6-9% of expanded graphite, 1-2% of nitrile-butadiene rubber and 6-10% of cashew shell oil modified phenolic resin. By reasonably matching multiple components, the invention ensures that the advantages of all the materials are sufficiently displayed in the friction material, thereby greatly prolonging the service life of the friction material. Compared with the existing ceramic brake pad, the ceramic brake pad provided by the invention has higher mechanical and braking properties at high temperature.

Description

technical field [0001] The invention relates to a brake pad, in particular to a friction material composition for a ceramic brake pad. Background technique [0002] From the 1920s to the 1980s, asbestos organic friction materials were widely used. Since the International Cancer Medical Association confirmed that asbestos and its high-temperature volatiles are carcinogens in 1972, there has been a wave of banning the use of asbestos friction materials in the world, and as the speed of cars increases, the surface temperature of brake products is as high as 300-500 ℃, asbestos friction material has poor thermal conductivity and heat resistance, loses crystal water at about 400 ℃, completely loses crystal water at 550 ℃, basically loses the reinforcing effect, and dehydration of asbestos will cause frictional instability, deterioration of working layer materials, and increased wear , there is a clear phenomenon of thermal decline, asbestos organic friction materials are no long...

Claims

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Application Information

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IPC IPC(8): C09K3/14F16D69/02
Inventor 张泽伟
Owner 摩擦一号汽车科技(仙桃)有限公司
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