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High-temperature-resistant heat-dissipating graphene-carbon nanotube coating and preparation method thereof
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A technology of graphene carbon and heat-dissipating coatings, applied in anti-corrosion coatings, fire-resistant coatings, coatings, etc., can solve the problems of unsatisfactory heat dissipation effects of heat-dissipating coatings
Inactive Publication Date: 2017-05-24
苏州碳丰石墨烯科技有限公司
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[0007] The technical problem to be solved in the present invention is to overcome the defects of unsatisfactory heat dissipation effect of existing heat dissipation coatings, and provide a graphene carbon nanotube high temperature heat dissipation coating and its preparation method
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Embodiment 1
[0028] A graphene carbon nanotube high-temperature heat dissipation coating, comprising the following components in parts by weight: 30 parts of graphene carbon nanotube composite slurry, water-based fluorocarbon resin or fluorocarbon resin emulsion: 28 parts, water: 15 parts, Defoamer: 0.1 part, leveling agent: 0.1 part, thickener: 0.1 part, dipropylene glycol methyl ether 2 parts.
[0029] The graphene-carbon nanotube composite slurry includes 1.5% carbon nanotubes, graphene: 2.5%, defoamer: 0.1%, wetting agent: 0.3%, and the rest is water.
[0030] A preparation method of graphene carbon nanotube high temperature heat dissipation coating, comprising the following steps:
[0031] 1) Put graphene and carbon nanotubes into water, add wetting agent to moisten; add defoamer, grind, and grind to fineness ≤ 30um;
[0033] 3), put the slurry into a certain amount of water, and add a defoamer;
[0034] 4), slowly add water-based fluorocarbon...
Embodiment 2
[0038] A graphene carbon nanotube high-temperature heat dissipation coating, comprising the following components in parts by weight: 40 parts of graphene carbon nanotube composite slurry, water-based fluorocarbon resin or fluorocarbon resin emulsion: 45 parts, water: 30 parts, Defoamer: 0.3 parts, leveling agent: 0.3 parts, thickener: 0.3 parts, dipropylene glycol methyl ether 5 parts.
[0039] The graphene-carbon nanotube composite slurry includes 3% carbon nanotubes, graphene: 1%, defoamer: 0.3%, wetting agent: 0.1%, and the rest is water.
[0040] The preparation method of the graphene carbon nanotube high-temperature heat dissipation coating of this embodiment is the same as that of Embodiment 1.
Embodiment 3
[0042] A graphene carbon nanotube high-temperature heat dissipation coating, comprising the following components in parts by weight: 36 parts of graphene carbon nanotube composite slurry, water-based fluorocarbon resin or fluorocarbon resin emulsion: 36 parts, water: 22 parts, Defoamer: 0.2 parts, leveling agent: 0.2 parts, thickener: 0.2 parts, dipropylene glycol methyl ether 4 parts.
[0043] The graphene-carbon nanotube composite slurry includes 2% carbon nanotubes, graphene: 1.5%, defoamer: 0.2%, wetting agent: 0.2%, and the rest is water.
[0044] The preparation method of the graphene carbon nanotube high-temperature heat dissipation coating of this embodiment is the same as that of Embodiment 1.
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Abstract
The invention discloses high-temperature-resistant heat-dissipating graphene-carbon nanotubecoating. The high-temperature-resistant heat-dissipating graphene-carbon nanotubecoating comprises the following components in parts by weight: 30-40 parts of a graphene-carbon nanotube composite slurry, 28-45 parts of waterborne fluorocarbon resin or a fluorocarbon resin emulsion, 15-30 parts of water, 0.1-0.3 part of a defoaming agent, 0.1-0.3 part of a leveling agent, 0.1-0.3 part of a thickening agent and 2-5 parts of dipropylene glycol methyl ether. A preparation method of the high-temperature-resistant heat-dissipating graphene-carbon nanotubecoating comprises the following steps: grinding the graphene-carbon nanotube composite slurry till the fineness is lower than or equal to 30 microns; then performing magnetic field induction; then sequentially adding water, the defoaming agent, the waterborne fluorocarbon resin or fluorocarbon resin emulsion, the leveling agent, the thickening agent and the dipropylene glycol methyl ether, and stirring at a low speed. By improving the orientation of the tube diameter of carbon nanotubes and then by doping a proper amount of graphene through chemical means, the heat conductivity and the heat emission of the carbon nanotubes and the graphene are further improved, so that the heat-dissipating effect is more ideal; in addition, by replacing a film-forming base material with the waterborne fluorocarbon resin or fluorocarbon resin emulsion with better weather resistance and high temperature resistance, the application field of the heat-dissipating coating is widened.
Description
technical field [0001] The invention relates to the technical field of object heat dissipation, in particular to a graphene carbon nanotube high-temperature heat dissipation coating and a preparation method thereof. Background technique [0002] There are radiation heat dissipation, conduction heat dissipation, convection heat dissipation, and evaporation heat dissipation. The heat dissipation of high-temperature objects includes almost all heat dissipation methods, but the thermal conductivity of air is small, and the amount of heat dissipation through direct conduction in the air is extremely small, and the heat transfer efficiency is extremely low. Convective heat dissipation in which objects exchange heat through gas flow, due to the poor air fluidity around high-temperature objects, the heat taken away is not high, and the heat dissipation effect is not obvious. This cooling method has certain limitations. Therefore, the most intuitive and effective way to improve the...
Claims
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