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High-temperature resistant composite type function brake shoe and production method thereof

A production method and composite technology, applied in the field of brake pad materials, can solve the problems of heat resistance, poor metal adhesion, easy oxidation, etc., and achieve the effects of improving the interface, improving the impact strength and prolonging the service life.

Active Publication Date: 2014-09-24
扬中市检验检测中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, there are unavoidable shortcomings in the above-mentioned existing patented technology: 1. The adhesion between the product and the metal is poor, and it is easy to fall off; influences

Method used

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  • High-temperature resistant composite type function brake shoe and production method thereof
  • High-temperature resistant composite type function brake shoe and production method thereof
  • High-temperature resistant composite type function brake shoe and production method thereof

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Embodiment Construction

[0035] The embodiment of the present invention provides a brake shoe production method, comprising the following steps:

[0036] 1. After the brake shoe raw materials are fully mixed and evenly mixed, the closed-type meshing, mixing and crushing are carried out to obtain the mixed polymer composite material;

[0037] 2. The formula of the brake shoe raw material in step 1 is calculated in parts by weight:

[0038] NBR: 5~10

[0039] BR: 2~5

[0040] SBR: 3~7

[0041] Boron-modified phenolic resin: 5 to 15

[0042] ZnO:2~3

[0043] S:0.3~0.5

[0044] MgO:5~7

[0045] Accelerator DM: 0.2~0.5

[0046] Accelerator TMTD: 0.3~0.8

[0047] Accelerator H: 0.2~0.3

[0048] Antiaging agent D: 0.2~0.4

[0049] Metal fiber: 15~20

[0050] Mineral fiber: 15-25

[0051] White carbon black: 5~8

[0052] Petroleum coke: 7~18

[0053] Molybdenum disulfide: 2~3

[0054] Aramid pulp: 4~5

[0055] BaSO4:18~30

[0056] Potassium titanate whiskers: 2 to 8

[0057] 3. Put the mixed...

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Abstract

The invention provides a high-temperature resistant composite type function brake shoe with excellent metal adhesiveness. Phenolic resin and white carbon black are adopted for promoting an H system to generate a synergistic effect, so that adhesiveness of the brake shoe and a steel backing is improved. The phenolic resin is boron-modified phenolic resin, due to the fact that a B-O bond is contained in the resin, heat resistance of the resin is improved, escape of low molecular materials and gas in the friction process can be reduced through increase of decomposition temperature, the phenomenon of heat fading is avoided, and friction is stable.

Description

technical field [0001] The invention relates to a high-friction-coefficient synthetic brake shoe for railway freight cars and a preparation method thereof, belonging to the technical field of brake pad materials. Background technique [0002] There are various types of high friction coefficient synthetic brake shoes for railway freight cars, and the preparation methods are different. However, most of them are prepared by the production process of using phenolic resin as a binder and thermocompression molding and curing. Synthetic brake shoes made of this material and process have been popularized in railway wagons with a speed of no more than 90km / h and an axle load of no more than 21t, and their performance can basically meet the braking requirements. With the development of international railway freight cars towards high speed and heavy load, the railway freight cars with a maximum operating speed of 120km / h and an axle load of 23t-25t on existing railway lines in my coun...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L9/00C08L9/06C08L61/06C08K13/04C08K3/22C08K3/06C08K7/06C08K3/08C08K3/36C08K3/30C08K7/08F16D65/04
Inventor 黄顺道
Owner 扬中市检验检测中心
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