Graphite/elastic resin composite grains, preparation method thereof and application of graphite/elastic resin composite grains to manufacturing of polishing wheel
An elastic resin and polishing wheel technology, which is applied in the field of materials, can solve the problems of poor lubrication and heat dissipation of polishing wheels, and achieve the effects of improving deformation resistance, improving mechanical properties, and good lubrication and heat dissipation performance
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Embodiment 1
[0037] The present embodiment provides a kind of preparation method of graphite / elastic resin compound particle, comprises the steps:
[0038] (1) 935g particle size is 100μm, density is 2.15g / cm 3 The natural flake graphite and the trade mark are two-component commercially available elastic polyurethane prepolymers of HC-8350 and mix, and wherein A component, B component are 250g, after homogeneous mixing, obtain mixture a;
[0039] (2) Pour the mixture a obtained in step (1) into a rectangular pan, scrape and spread evenly to form a casting layer with a thickness of 0.3mm, solidify at 25°C for 10h, and obtain a graphite / elastic resin composite material after completion;
[0040](3) Process the graphite / elastic resin composite material obtained in step (2) into a wire material with a width of 300-500 μm, and then process the wire material into particles with a length of 300-500 μm to obtain a hexahedral graphite / elastic resin composite grain.
[0041] After testing, the gra...
Embodiment 2
[0046] The present embodiment provides a kind of preparation method of graphite / elastic resin compound particle, comprises the steps:
[0047] (1) 560g particle size is 200μm, density is 2.10g / cm 3 Graphene is mixed with the two-component commercially available elastic polyurethane prepolymer of HC-8350, wherein A component and B component are 435g, after homogeneous mixing, mixture a is obtained;
[0048] (2) Pour the mixture a obtained in step (1) into a rectangular pan, scrape and spread evenly to form a casting layer with a thickness of 0.3 mm, solidify at 60° C. for 0.5 h, and obtain a graphite / elastic resin composite material after completion;
[0049] (3) Process the graphite / elastic resin composite material obtained in step (2) into a wire material with a width of 1300-1500 μm, and then process the wire material into particles with a length of 1300-1500 μm to obtain graphite / elastic resin composite particles.
[0050] After testing, the graphite in the obtained graphi...
Embodiment 3
[0055] The present embodiment provides a kind of preparation method of graphite / elastic resin compound particle, comprises the steps:
[0056] (1) 1300g particle size is 1μm, density is 2.23g / cm 3 The carbon black of carbon black is mixed with the two-component commercially available elastic polyurethane prepolymer of HC-8350, and wherein A component, B component are 68g, after homogeneous mixing, obtain mixture a;
[0057] (2) Pour the mixture a obtained in step (1) into a rectangular pan, scrape and spread evenly to form a casting layer with a thickness of 0.3mm, solidify at 40°C for 5h, and obtain a graphite / elastic resin composite material after completion;
[0058] (3) Process the graphite / elastic resin composite material obtained in step (2) into a wire material with a width of 200-250 μm, and then process the wire material into particles with a length of 200-250 μm to obtain graphite / elastic resin composite particles.
[0059] After testing, the graphite in the obtaine...
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