A kind of graphene heat dissipation coating and its preparation method and application
A technology of heat-dissipating coatings and graphene, applied in the direction of polyester coatings, anti-corrosion coatings, cellulose coatings, etc., can solve the problems of further improvement of heat dissipation effect, poor stability and dispersibility of heat-conducting metal powder, and increased cost, etc., to achieve Excellent heat conduction and heat dissipation effect, good weather resistance, easy to exert effect
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Embodiment 1
[0049] In parts by weight, the following raw materials are obtained:
[0050] 100 parts of epoxy resin, 10 parts of biomass graphene powder (5 parts with particle size of 8 μm, 5 parts with particle size of 50 μm), 10 parts of mica flake powder (radial size of 100 μm-200 μm, thickness of 1 μm-3 μm), α - 5 parts of alumina, 5 parts of aluminum nitride, 3 parts of talc, 3 parts of dispersant, 1 part of defoamer, 2 parts of leveling agent, 14 parts of xylene, 4 parts of n-butanol, 2 parts of diacetone alcohol .
[0051] (1) Get the biomass graphene powder with a particle size of 8 μm, add water to disperse, and prepare a graphene material dispersion, and then add mica flake powder, α-alumina, aluminum nitride and talcum powder to it, in water Ultrasonic dispersion for 2 hours, drying at 90°C for 6 hours to obtain graphene-mica composite powder;
[0052] (2) After mixing epoxy resin, graphene-mica composite powder, xylene, n-butanol, diacetone alcohol, dispersant, defoamer and l...
Embodiment 2
[0060] In parts by weight, the following raw materials are obtained:
[0061] 75 parts of silicone acrylic resin, 25 parts of amino resin, 10 parts of biomass graphene powder (1 part of particle size 10 μm, 9 parts of particle size of 100 μm), 10 parts of mica flake powder, 5 parts of carbon fiber powder, 5 parts of aluminum nitride 5 parts, 5 parts of talcum powder, 3 parts of dispersant, 1 part of defoamer, 2 parts of anti-settling agent, 14 parts of xylene, 4 parts of n-butanol, 2 parts of diacetone alcohol;
[0062] (1) Take biomass graphene powder with a particle size of 10 μm, add water to disperse it, and prepare a graphene material dispersion, then add mica flake powder, carbon fiber powder, aluminum nitride and talcum powder to it, and ultrasonically disperse in water for 3 hours , and dried at 90°C for 6 hours to obtain graphene-mica composite powder;
[0063] (2) Mix silicone acrylic resin, amino resin, graphene mica composite powder, xylene, n-butanol, diacetone a...
Embodiment 3
[0068] In parts by weight, the following raw materials are obtained:
[0069] 50 parts of phenolic resin, 20 parts of graphene oxide powder (4 parts of particle size 7 μm, 16 parts of particle size of 60 μm), 1 part of mica flake powder, 3 parts of carbon black, 1 part of diamond powder, 1 part of carbon fiber, 2 parts of graphite , 2 parts of copper powder, 2 parts of boron nitride, 2 parts of dispersant, 1 part of defoamer, 2 parts of leveling agent, 3 parts of water, 2 parts of ethanol, 4 parts of acetone, 3 parts of N-methylpyrrolidone, N , 3 parts of N-dimethylformamide, 3 parts of n-hexane, 2 parts of cyclohexane;
[0070] (1) Take graphene oxide powder with a particle size of 7 μm, add water to disperse, and prepare a graphene material dispersion, and then add mica flake powder, carbon black, diamond powder, carbon fiber, graphite, copper powder and boron nitride to it , ultrasonically dispersed in water for 4 hours, and dried at 90°C for 3 hours to obtain graphene-mic...
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