Hydrophobic friction material, brake pad and preparation method

A technology of friction materials and brake pads, which is applied in the field of brake pads, can solve the problems of reducing the friction coefficient of brake pads, achieve stable friction coefficient, excellent high temperature performance, and improve the effect of reducing friction coefficient

Active Publication Date: 2021-06-11
SHANDONG GOLD PHOENIX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies and defects in the prior art, the present invention provides a hydrophobic friction material, a brake pad and a preparation method, which are used to solve the problem of friction after the brake pad encounters water The problem of coefficient reduction

Method used

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  • Hydrophobic friction material, brake pad and preparation method
  • Hydrophobic friction material, brake pad and preparation method
  • Hydrophobic friction material, brake pad and preparation method

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preparation example Construction

[0034] Please refer to the attached figure 1 , the preparation method of the brake pad comprising the above-mentioned hydrophobic friction material provided by the present invention comprises the following steps:

[0035] S1. Mix and stir the raw material components of the hydrophobic friction material according to the ratio;

[0036] S2. Pour the well-stirred mixture into the mold cavity, add cushion material and steel back, and heat press to form;

[0037] S3, post-processing the product after hot pressing;

[0038] S4. Spraying a water-repellent agent on the surface of the friction material of the post-treated product.

[0039] Specifically, in step S2, the mass of the cushion material added during hot pressing is 8% of the total mass of the raw materials of the friction material; wherein, the cushion material is made of raw materials such as resin, rock wool fiber, attapulgite, dolomite, etc. Mixture, which mainly plays the role of bonding friction material and steel ba...

Embodiment 1

[0048] Based on the total mass of the raw material components of the hydrophobic friction material, the hydrophobic friction material includes the following components and mass percentages: 5% hydrophobic binder, 10% hydrophobic filler, 14% steel fiber, 4% titanium dioxide , earthy graphite 7%, garnet powder 5%, tungsten sulfide 2%, barite 53%. Wherein, the hydrophobic binder is silicone-modified phenolic resin, and the hydrophobic filler includes 2% polytetrafluoroethylene powder, 4% silicon rubber powder, and 4% polypropylene powder.

[0049] The preparation method of brake pad in the present embodiment comprises the following steps:

[0050] S1, mixing materials, adding the above raw material components into a high-speed mixer and stirring for 12 minutes, so that all raw materials are mixed evenly;

[0051] S2, hot press molding, add the mixture evenly stirred in step S1 into the mold cavity, flatten it with a tool, then add cushion material and steel back, hot press moldi...

Embodiment 2

[0055] Based on the total mass of the raw material components of the hydrophobic friction material, the hydrophobic friction material includes the following components and mass percentages: 10% hydrophobic binder, 20% hydrophobic filler, 20% steel fiber, 7% titanium dioxide , earthy graphite 11%, garnet powder 8%, tungsten sulfide 3%, barite 21%. Wherein the hydrophobic binder is silicone modified phenolic resin, the hydrophobic filler is 4% polytetrafluoroethylene powder, 8% silicon rubber powder, and 8% polypropylene powder.

[0056] The preparation method of the brake pad in this embodiment is the same as that in Embodiment 1, except that the water-repellent agent sprayed in step S4 is isooctenetriethoxysilane.

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Abstract

The invention provides a hydrophobic friction material which comprises the following components in percentage by mass based on the total mass of raw material components of the hydrophobic friction material: 4-12% of a hydrophobic binder, 10-20% of a hydrophobic filler, 11-20% of steel fibers, 3-7% of titanium dioxide, 4-11% of amorphous graphite, 4-8% of garnet powder, 1-3% of tungsten sulfide and 21-61% of barite. The hydrophobic friction material has good hydrophobicity, and coefficient reduction of the friction material after the friction material encounters water can be effectively inhibited; and a brake pad prepared from the hydrophobic friction material is stable in friction coefficient, and the braking safety after a vehicle wades into water is guaranteed. The invention further provides a preparation method of the brake pad, the process is simple, and operation is convenient.

Description

technical field [0001] The invention relates to the technical field of brake pads, in particular to a hydrophobic friction material, a brake pad 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. The friction material applied to the brake pad mainly achieves the braking effect through friction. Therefore, the friction material is a key component of the braking device, and its performance determines the braking performance of the brake pad, that is, the friction material is a key component to ensure the safety of the vehicle brake, so the friction material needs to meet various Performance requirements under various braking conditions. [0003] However, in the existing brake pads, under some unconventional road conditions, such as rainy and snowy weather or after the vehicle fords water, there will be a layer of water film on the surf...

Claims

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Application Information

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IPC IPC(8): C08L61/14C08L27/18C08L83/04C08L23/12C08K13/04C08K7/06C08K3/22C08K3/04C08K3/30C08K3/34F16D69/02C08J7/06
CPCC08L61/14C08L83/04F16D69/026C08J7/065C08L2205/035C08K2003/2241C08K2003/3045C08K2003/3009C08J2361/14C08J2383/04C08J2427/18C08J2483/04C08J2423/12C08J2461/14C08L27/18C08L23/12C08K13/04C08K7/06C08K3/22C08K3/04C08K3/30C08K3/34
Inventor 王傅巍甄明晖孙海燕
Owner SHANDONG GOLD PHOENIX
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