Water-based graphene heat dissipation coating as well as preparation and spraying methods thereof

A technology of water-based graphene and heat-dissipating coatings, which is applied in coatings and other directions, can solve the problems that graphene is difficult to form heat conduction paths, and the heat dissipation effect cannot meet the application requirements, so as to reduce interface scattering, excellent thermal conductivity, and improve heat conduction paths. effect of ability

Pending Publication Date: 2022-01-04
BEIJING TUNGHSU CARBON ADVANCED MATERIALS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current graphene heat dissipation coatings, graphene is difficult to form a heat conduction path, and the heat dissipation effect still cannot meet the application requirements.

Method used

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  • Water-based graphene heat dissipation coating as well as preparation and spraying methods thereof
  • Water-based graphene heat dissipation coating as well as preparation and spraying methods thereof
  • Water-based graphene heat dissipation coating as well as preparation and spraying methods thereof

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Experimental program
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preparation example Construction

[0019] The second aspect of the present disclosure provides the preparation method of the water-based graphene heat-dissipating coating described in the first aspect, characterized in that, the method comprises the following steps: S1, mixing the water-based resin, deionized water and the first additive It is dispersed and stirred to obtain the first mixture; S2, adding heat-conducting particles, conductive carbon black and graphene dispersion slurry to the first mixture to obtain the second mixture; S3, grinding the second mixture into the solid The particle size of the material is less than 10 μm, and the thermally conductive black slurry is obtained by filtering; S4, adding the thermally conductive black slurry, deionized water, water-based resin and the second additive into the container and stirring evenly to obtain a water-based graphene heat-dissipating coating; the step S2 is also The method includes: adding grinding media to the second mixture, and the mass ratio of th...

Embodiment 1

[0026] (1) Mix 42g of water-based hydroxyl acrylic resin, 4.5g of deionized water, 9.2g of the first additive (1.2g of dispersant TNWDIS, 1.5g of dispersant Dego-755W, 1.5g of dispersant BYK190, 3.75g of dispersant 4900 and 1.25 g antifoaming agent Dego-902W) is mixed and added in the grinding jar, dispersed and stirred for 1h at a rotating speed of 800rpm to obtain a uniformly stirred first mixture; then add 88g graphene dispersion slurry, 5.25g carbon nanotubes in the first mixture , 1.05g conductive carbon black, and then add zirconia beads of 0.8~1.0mm and 1.4~1.6mm to obtain the second mixture. The mass ratio of zirconia beads is 2:1, and the zirconia beads in the second mixture are filtered and removed to obtain a thermally conductive black slurry; 92g of thermally conductive black slurry, 4.5g of deionized water, and 3.5g of the second auxiliary agent are weighed. Add the agent (0.5g coupling agent LD-9S, 1g defoamer BYK-028, 1g film forming agent dodecyl alcohol ester,...

Embodiment 2

[0035] (1) 42g water-based hydroxyacrylic resin, 4.5g deionized water, 9.2g first additives (1.2g wetting agent BYK349, 1.5g dispersant Dego-755W, 1.5g dispersant BYK190, 3.75g dispersant 4900 and 1.25g defoamer Dego-902W) was added into the grinding jar, dispersed and stirred for 1h at 800rpm to obtain a uniformly stirred mixture; then 88g graphene dispersion slurry, 5.25g rod-shaped zinc oxide, and 1.05g conductive carbon were added to the mixture Black, and then add zirconia beads of 0.8-1.0mm and 1.4-1.6mm to obtain the second mixture. The amount of zirconia beads added is 35% of the mass of the second mixture, and the mass ratio of zirconia beads of two particle sizes is 2 : 1, ground to a particle size of less than 10 μm, the zirconia beads in the second mixture are removed by filtration to obtain a thermally conductive black slurry; 92g of thermally conductive black slurry, 4.5g deionized water, 3.5g of the second auxiliary agent (0.5g Joint agent LD-9S, 1g defoamer BYK...

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Abstract

The invention relates to a water-based graphene heat dissipation coating. The water-based graphene heat dissipation coating comprises the following components: water-based resin, graphene dispersion slurry, deionized water, heat conduction particles, conductive carbon black, a first auxiliary agent and a second auxiliary agent, and the water-based graphene heat dissipation coating is prepared from the following components in parts by weight: 20 to 55 parts of water-based resin, 30 to 65 parts of graphene dispersion slurry, 5 to 45 parts of deionized water, 1.5 to 12 parts of heat conduction particles, 0.5 to 2 parts of conductive carbon black, 5 to 20 parts of a first auxiliary agent and 3 to 8 parts of a second auxiliary agent. The water-based graphene heat dissipation coating is low in pollution, easy to purify, non-irritant and high in safety.

Description

technical field [0001] The disclosure relates to the field of heat-dissipating coatings, in particular to a water-based graphene heat-dissipating coating and its preparation and spraying methods. Background technique [0002] Heat dissipation paint is to improve the heat dissipation performance of the paint by adding metal heat conduction fillers and non-metal heat conduction fillers to the paint. Using heat dissipation paint in heat dissipation components, heat dissipation substrate materials, heating elements and other equipment can control the temperature of electronic components. In the range. Commonly used high thermal conductivity fillers are divided into carbon-based fillers, such as: graphene, carbon fiber, diamond, etc.; metal fillers, such as: silver (Ag), copper (Cu), aluminum (Al), etc.; ceramic fillers, such as: Silicon carbide (SiC), magnesium oxide (MgO), boron nitride (BN), etc. Among them, the thermal conductivity of graphene single layer is 5300W / m·k, sur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D7/61
CPCC09D133/00C09D7/61C08K2201/001C08K3/042C08K3/041C08K3/04
Inventor 肖倩孙金梅
Owner BEIJING TUNGHSU CARBON ADVANCED MATERIALS TECH CO LTD
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