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.
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[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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