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Brake disc prepared from QICC nano carbon-carbon SiC nano redundant composite material and preparation method

A technology of composite materials and brake discs, which is applied in the direction of mechanical equipment, friction linings, gear transmission mechanisms, etc., can solve the problems of long cycle time, high unit cost, and cumbersome process

Inactive Publication Date: 2019-03-29
深圳市智雅墨族科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The friction coefficient of carbon-ceramic brake discs and organic brake pads after running-in is related to the actual contact area. The surface rich in nano-ceramic can significantly improve the friction performance of carbon-ceramic brake discs. However, the existing carbon-ceramic brake disc technology with friction layer mainly It is an integrated design starting from carbon fiber reinforced resin-based composite materials, so there are: the surface friction layer is reaction sintered silicon carbide, and the residual silicon will affect the use resistance and high temperature wear resistance of the brake disc, and the brake disc needs to be mixed separately Hot pressing forming and processing, cumbersome process, high unit cost, long cycle and other stubborn problems, cannot keep pace with the times, meet market demand, and restrict the development of high-end equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Under vacuum conditions, put the carbon fiber in an environment of 2150 ° C for 2 h, soak the calcined carbon fiber matrix with a mixed solution of sodium hydroxide and sodium sulfite at 50 ° C for 60 min, then rinse it with deionized water until it is neutral, and dry it until use.

[0030] Take 10ml of the composite catalyst, add 90ml of ammonia water with a concentration of 2mol / L, and then add 30ml of absolute ethanol, stir to make it evenly mixed.

[0031] The mixed solution was transferred to an autoclave, the obtained C / C-SiC carbon fiber prefabricated body was immersed in the autoclave for 8 hours, and the autoclave was immersed in oil at 120° C. for 2 hours. Rapidly cool the reactor with cold water to lower the temperature to normal / room temperature, take out the carbon fiber prefabricated body and dry it naturally in the shade while continuously turning it. The obtained sample is transferred to a vacuum carbon tube furnace for calcination, and reduced to obta...

Embodiment 2

[0041] Under vacuum conditions, place the carbon fiber in an environment of 2300°C for 3h and calcine the calcined carbon fiber matrix with a mixed solution of sodium hydroxide and sodium sulfite at 70°C for 80min, then wash it with deionized water until neutral, and finally dry it stand-by.

[0042] Take 13ml of composite catalyst, add 120ml of ammonia water with a concentration of 2mol / L, then add 50ml of absolute ethanol, stir to make it evenly mixed.

[0043] The mixed solution was transferred to an autoclave, and the obtained C / C-SiC carbon fiber preform was immersed in the autoclave for 10 hours, and the autoclave was immersed in oil at 150° C. for 3 hours. Rapidly cool the reactor with cold water to lower the temperature to normal / room temperature, take out the carbon fiber prefabricated body and dry it naturally in the shade while continuously turning it. The obtained sample is transferred to a vacuum carbon tube furnace for calcination, and reduced to obtain a nano-c...

Embodiment 3

[0053] Under vacuum conditions, put the carbon fiber into an environment of 2200 ° C for 2 h, soak the calcined carbon fiber matrix with a mixed solution of sodium hydroxide and sodium sulfite at 60 ° C for 70 min, then rinse it with deionized water until it is neutral, and finally dry it stand-by.

[0054] Take 13ml of composite catalyst, add 100ml of ammonia water with a concentration of 2mol / L, then add 40ml of absolute ethanol, stir to make it evenly mixed.

[0055] The mixed solution was transferred to an autoclave, the obtained C / C-SiC carbon fiber preform was immersed in the autoclave for 8 hours, and the autoclave was immersed in oil at 130° C. for 2 hours. Rapidly cool the reactor with cold water to lower the temperature to normal / room temperature, take out the carbon fiber prefabricated body and dry it naturally in the shade while continuously turning it. The obtained sample is transferred to a vacuum carbon tube furnace for calcination, and reduced to obtain a nano...

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Abstract

The invention provides a brake disc prepared from a QICC carbon / carbon-SiC nano redundant composite material and a preparation method. The invention relates to a preparation technology of brake discs.In order to solve technical problems and improve defects, the invention provides a brake disc prepared from a QICC carbon / carbon-SiC nano redundant composite material and a preparation method, characterized in that nano fiber is extracted from carbon fiber to synthesize a brake disc friction material, the pore structure of the carbon fiber is changed, a sodium hydroxide solution and a sodium sulfite solution are added for processing, more uniform hollow spaces are created in the structure of a carbon-ceramic composite material by removing some compounds, and the interface of controlling the carbon-ceramic composite material is optimized by means of surface modification and in-situ synthesis, so that the brake disc has higher use temperature and more excellent abrasion resistance, intensity, toughness, mechanical properties and integrated comprehensive properties, and is suitable for industrialized production.

Description

technical field [0001] The invention relates to a preparation process of a brake disc, in particular to a preparation method of a C / C-SiC nano redundant composite material brake disc. Background technique [0002] The rapid development of nanotechnology has greatly promoted the development of new materials in the direction of high performance, high functionality, compounding, intelligence and low cost. In the R&D and production of composite materials, nanotechnology is used to control and optimize the interface of heterogeneous materials with different scales and structures, which provides a new opportunity for the study of strengthening and toughening composite materials. C / C-SiC carbon-ceramic composite brake discs have the advantages of light weight, excellent high-temperature friction, and wear resistance, and are widely used in industrial power equipment braking systems. More forward-looking and higher requirements to face more expectations of the market. [0003] QIC...

Claims

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Application Information

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IPC IPC(8): C04B35/80C04B35/84F16D69/02
CPCC04B35/806C04B2235/3826C04B2235/48C04B2235/5248F16D69/023F16D2200/0047F16D2200/006F16D2200/0082
Inventor 周贤东赵纲张铁民
Owner 深圳市智雅墨族科技有限公司
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