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Composite reinforced ceramic high-temperature resistant friction material

A friction material and composite reinforcement technology, applied in the field of friction materials, can solve the problems of limited performance improvement and single variety of reinforcement materials, and achieve the effects of improving high temperature resistance, good thermal conductivity, and improving high temperature strength

Inactive Publication Date: 2012-05-02
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there have been many studies on the formula of ceramic friction materials in recent years, the adhesive used in friction materials is basically phenolic resin obtained by condensation polymerization of phenol and formaldehyde, and the variety of reinforcing materials is relatively single. limited improvement

Method used

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  • Composite reinforced ceramic high-temperature resistant friction material
  • Composite reinforced ceramic high-temperature resistant friction material
  • Composite reinforced ceramic high-temperature resistant friction material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A composite reinforced ceramic type high temperature resistant friction material, the friction material is composed of the following components by weight percentage:

[0018]

[0019]

[0020] After weighing the above-mentioned raw materials according to the proportion, add them into a high-speed mixer (3000 rpm) and stir evenly. The uniformly mixed material is weighed according to the required thickness of the finished product, and then placed in a hot-pressing mold and heat-cured for 20 minutes at 175±5°C and a pressure of 10MPa for molding. In the first 3 minutes of heat curing, the mold is opened and deflated once every 30 seconds, for a total of 6 deflations, and then pressure is maintained for curing. The obtained cured semi-finished product is put into an oven, after post-curing at 180°C for 4 hours, it is ground and drilled to obtain the final product.

[0021] According to GB5763-2008 test, the impact strength is 0.5J / cm 2 , The thermal expansion rate a...

Embodiment 2

[0025] A composite reinforced ceramic type high temperature resistant friction material, the friction material is composed of the following components by weight percentage:

[0026]

[0027] After weighing the above-mentioned raw materials according to the proportion, add them into a high-speed mixer (3000 rpm) and stir evenly. The uniformly mixed material is weighed according to the required thickness of the finished product, and then placed in a hot-pressing mold and heat-cured for 20 minutes at 175±5°C and a pressure of 10MPa for molding. In the first 3 minutes of heat curing, the mold is opened and deflated once every 30 seconds, for a total of 6 deflations, and then pressure is maintained for curing. The obtained cured semi-finished product is put into an oven, after post-curing at 180°C for 4 hours, it is ground and drilled to obtain the final product.

[0028] According to GB5763-2008 test, the impact strength is 0.5J / cm 2 , The thermal expansion rate at 200°C is 0...

Embodiment 3

[0032] A composite reinforced ceramic type high temperature resistant friction material, the friction material is composed of the following components by weight percentage:

[0033]

[0034] After weighing the above-mentioned raw materials according to the proportion, add them into a high-speed mixer (3000 rpm) and stir evenly. The uniformly mixed material is weighed according to the required thickness of the finished product, and then placed in a hot-pressing mold and heat-cured for 20 minutes at 175±5°C and a pressure of 10MPa for molding. In the first 3 minutes of heat curing, the mold is opened and deflated once every 30 seconds, for a total of 6 deflations, and then pressure is maintained for curing. The obtained cured semi-finished product is put into an oven, after post-curing at 180°C for 4 hours, it is ground and drilled to obtain the final product.

[0035] According to GB5763-2008 test, the impact strength is 0.5J / cm 2 , The thermal expansion rate at 200°C is 0...

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Abstract

The invention relates to a composite reinforced ceramic high-temperature resistant friction material. The friction material provided by the invention is made from the following components of: by weight, 18-26% of a binder, 46-61% of a reinforced material, 10-15% of a filler and 10-16% of a friction performance regulator. Weighed according to the gross weight of the friction material, the binder is composed of, by weight, 8-10% of polybenzoxazine resin, 2-4% of phenolic resin, 4-6% of nitrile rubber and 4-6% of cardanol. The friction material provided by the invention has advantages of high-temperature resistance, low wear, low brake noise and stable friction coefficient.

Description

technical field [0001] The invention relates to a friction material, in particular to a composite reinforced ceramic type high temperature resistant friction material. Background technique [0002] With the development of the automobile industry and transportation, the requirements for brake friction materials, an important part to ensure driving safety, are gradually increasing. Traditional asbestos-based friction materials are gradually being replaced by semi-metallic and non-asbestos organic (NAO) friction materials due to the existence of health hazards to the human body (K.W.Hee, P.Filip, Wear 259(7-12)(2005) 1088-1096; B . Suresha, G. Chandramohan, P. Samapthkumaran, S. Seetharamu, S. Vynatheya, J. Reinf. Plast. Compos. 25(7) (2006) 771-782). Ordinary semi-metallic friction materials have defects such as easy rust, brake noise and damage, and cannot be widely used, while ordinary NAO friction materials have too low temperature resistance, which affects the scope of ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14C08L79/04C08L61/06C08L9/02C08L33/20C08K13/04C08K7/04C08K7/06C08K7/08C08K3/04C08K3/30
Inventor 曾鸣吴耀庆黄以万候书恩
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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