Silicon carbide/molybdenum disulfide composite ceramic and preparation method thereof

A composite ceramic and molybdenum disulfide technology, applied in the field of composite ceramics, can solve the problems that the compatibility is not optimal, the heat resistance and mechanical properties of molybdenum disulfide ceramics need to be improved, etc., and achieve the effect of excellent wear resistance.

Inactive Publication Date: 2016-01-13
ANHUI DONGXUN SEALING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although molybdenum disulfide ceramics have achieved certain results as a friction material, the compatibility of molybdenum disulfide and other components in the existing molybdenum disulfide ceramics is not optimal, which leads to the poor performance of molybdenum disulfide ceramics in heat resistance. The performance and mechanical properties still need to be improved

Method used

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preparation example Construction

[0022] The present invention further provides a method for preparing silicon carbide / molybdenum disulfide composite ceramics, comprising:

[0023] 1) mixing and grinding silicon carbide, graphite, molybdenum disulfide and water to obtain a silicon carbide slurry;

[0024] 2) mixing and grinding the water-soluble resin and the silicon carbide slurry to obtain the first modified slurry;

[0025] 3) mixing and grinding the plasticizer with the first modified slurry to obtain the second modified slurry;

[0026] 4) mixing and grinding the release agent with the second modified slurry to obtain the third modified slurry;

[0027] 5) drying the third modified slurry to obtain silicon carbide / molybdenum disulfide composite ceramics;

[0028] Wherein, the water-soluble resin is selected from one or more of polyvinyl alcohol, polyethylene oxide, poly-N-vinylpyrrolidone and polyurethane, and the particle size of silicon carbide is 1-5 μm.

[0029] In the preparation method of the pre...

Embodiment 1

[0037] 1) Mix silicon carbide (with a particle size of 3 μm), graphite, molybdenum disulfide and water at a weight ratio of 100:10:18:140 and perform ball milling for 60 minutes to obtain a silicon carbide slurry (solid content: 35% by weight) ;

[0038] 2) Mix the water-soluble resin (polyvinyl alcohol with a weight average molecular weight of 10,000) and the silicon carbide slurry and perform ball milling for 1.5 hours to obtain the first modified slurry, wherein the water-soluble resin is carbonized with the silicon carbide slurry The weight ratio of silicon is 8:100;

[0039] 3) Mix the plasticizer (methyl phthalate) with the first modified slurry and perform ball milling for 1.2 hours to obtain the second modified slurry, wherein, the plasticizer and the silicon carbide in the silicon carbide slurry The weight ratio is 2:100;

[0040]4) Mix the release agent (silicone oil) with the second modified slurry and perform ball milling for 60 minutes to obtain the third modifi...

Embodiment 2

[0043] 1) Mix silicon carbide (with a particle size of 1 μm), graphite, molybdenum disulfide and water at a weight ratio of 100:5:11:99 and perform ball milling for 40 minutes to obtain a silicon carbide slurry (solid content: 30% by weight) ;

[0044] 2) Mix the water-soluble resin (polyethylene oxide with a weight average molecular weight of 2000) and the silicon carbide slurry and perform ball milling for 1 hour to obtain the first modified slurry, wherein the water-soluble resin and the silicon carbide slurry The weight ratio of silicon carbide is 5:100;

[0045] 3) Mix the plasticizer (tricresyl phosphate) with the first modified slurry and perform ball milling for 1 hour to obtain the second modified slurry, wherein the weight ratio of plasticizer to silicon carbide in the silicon carbide slurry is 1:100;

[0046] 4) Mix the release agent (polyethylene wax) with the second modified slurry and perform ball milling for 40 minutes to obtain the third modified slurry, wher...

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Abstract

The invention discloses a silicon carbide/molybdenum disulfide composite ceramic and a preparation method thereof. The silicon carbide/molybdenum disulfide composite ceramic contains silicon carbide, graphite, molybdenum disulfide, water soluble resin, a plasticizer and a demolding agent, wherein the water soluble resin is selected from one or more of polyvinyl alcohol, polyethylene oxide, poly(N-vinyl pyrrolidone) and polyurethane, and the particle size of silicon carbide is 1-5 [mu]m. The silicon carbide/molybdenum disulfide composite ceramic has excellent wear resistance, heat resistance and mechanical properties, besides, the preparation method is simple in steps, and the raw materials are easy to obtain.

Description

technical field [0001] The invention relates to composite ceramics, in particular to a silicon carbide / molybdenum disulfide composite ceramic and its preparation method. Background technique [0002] With the rapid development of science and technology, brake products have higher and higher requirements for friction materials. In addition to safety and comfort under high-speed, high-temperature, high-pressure and other harsh working conditions, energy-saving, environmental protection, and cleanliness have been proposed in recent years. Wait for higher requirements. In my country's twelfth five-year plan, it has been clearly stated that the top priority of national economic development is energy conservation, environmental protection, stable and sustainable scientific development concept, so that my country can develop into a stable and prosperous power in a short period of time. . In the 30 years of reform and opening up, my country's friction industry, like all walks of li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/515C04B35/565C04B35/622
Inventor 王茜
Owner ANHUI DONGXUN SEALING TECH
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