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

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] See figure 1 The present invention provides a method of preparing a brake pad comprising the above hydrophobic friction material, comprising the steps of:

[0035] S1, the raw material components of the hydrophobic friction material are mixed and stirred in ratio;

[0036] S2, pour the mixed mixture of stirring into the mold cavity, add pad layer, steel back, and hot press molding;

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

[0038] S4, sprayed with water repellent surfaces of the friction material of the post-treated product.

[0039] Specifically, in step S2, the mass of the pad layer added in the hot press form is 8% of the total mass of the raw material of the friction material; wherein the pad layer is a resin, rocky cotton fiber, a bump, and dolomite. The mixture is mainly bonded to the friction material and the back of the steel.

[0040] In some embodiments, the hot pressing temperature is 150 to 170 ° C, the pressure is 300 ~ 450 kg / cm. 2 However,...

Example Embodiment

[0047] Example 1

[0048] The total mass of the raw material components of the water friction material is a reference meter, and the hydrophobic friction material includes the following components and mass percentage: hydrophobic adhesive, 10% hydrophobic filler, 14% steel fiber, 4% titanium dioxide , Soil graphite 7%, pomegranate powder 5%, hydraulic hydrazine 2%, and 53% of the heavy crystal stone. Among them, the hydrophobic adhesive is a silicone-modified phenolic resin, and the hydrophobic filler includes 2% of polytetrafluoroethylene powder, silicone rubber powder 4%, and 4% of polypropylene powder.

[0049] The preparation method of the brake pad in this embodiment includes the following steps:

[0050] S1, mixing, the above raw material component is added to the high speed mixer for 12 minutes, and all raw materials are mixed;

[0051] S2, hot press forming, the mixture mixing in step S1 is added to the mold cavity, flattened by the tool, then adding the pad layer, steel b...

Example Embodiment

[0054] Example 2

[0055] The total mass of the raw material components of the hydrofilm-friction material is a reference meter, and the hydrophobic friction material includes the following components and mass percentage: hydrophobic adhesive 10%, hydrophobic filler 20%, steel fiber 20%, titanium dioxide 7% , Soil graphite 11%, 8% of pomegranate powder, thiothermium sulphate, 21% of the crystalline stone. Among them, the hydrophobic adhesive is a silicone-modified phenol resin, and the hydrophobic fillement is 4%, silicone rubber powder, 8%, and polypropylene powder.

[0056] The method of the brake pad in this embodiment is the same as in Example 1, and the liquid hydrophobic agent is isoeidienethoxysilane in step S4.

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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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