Graphene heat-radiation coating and preparation method thereof

A technology of heat-dissipating coatings and graphene dispersants, applied in the field of coatings, can solve problems such as high toxicity and serious environmental pollution, achieve low price, good bonding performance, and improve the effect of heat dissipation

Inactive Publication Date: 2018-02-27
厦门信果石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these oxides or nitrides have higher thermal conductivity, they are generally more expensive
At the same time, the prepared coatings contain various organic solvents, which have the disadvantages of high toxicity and serious environmental pollution.

Method used

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  • Graphene heat-radiation coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] First mix 35 g of water-based silicone resin H-900 and 40 g of water, then add 3.3 g of nano-graphene powder (particle size is 100nm), stir for 1 minute, then add graphene dispersant, water-based leveling agent and water-based 0.5 g of each defoaming agent was mixed, placed in a ball mill, and ball milled at 400 r / min for 6 hours to obtain a nano-graphene heat-dissipating coating, and the ground coating was poured out and sealed for use.

Embodiment 2

[0023] First mix 40 g of water-based epoxy resin E44 and 30 g of ethanol, then add 4.5 g of nano-graphene powder (particle size is 100nm), stir for 1 minute and then add graphene dispersant, water-based leveling agent and water-based defoaming agent Mix 1 g of each agent, place in a ball mill, and mill at 400 r / min for 6 hours to obtain a nano-graphene heat-dissipating coating. Pour out the ground coating and seal it up for use.

Embodiment 3

[0025] First mix 50g of water-based polyurethane resin CS1600 and 40g of water together, then add 7g of nano-graphene powder (particle size is 100nm), stir for 1 minute, add 2g of graphene dispersant, 1g of water-based leveling agent and 1g of water-based defoamer Mix evenly, place in a ball mill, and ball mill at 400 r / min for 6 hours to obtain a nano-graphene heat-dissipating coating, pour out the ground coating and seal it for later use.

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Abstract

The invention discloses a graphene heat-dissipating coating. The components used in the coating are calculated by weight percentage: 30-60% of water-based resin, 3-15% of nano-graphene, 0.5-2.5% of graphene dispersant, and 0.5% of water-based leveling agent. ~1.5%, water-based defoamer 0.5~1.5%, solvent 30~40%, the sum of the weight percentages of each component is 100%. The present invention comprehensively utilizes the high thermal conductivity of nano-graphene and the excellent bonding performance, high strength, excellent high temperature resistance and electrical insulation performance of the water-based resin, and disperses the nano-graphene in the water-based resin under the synergistic effect of various additives. Among them, a new environmentally friendly heat-dissipating coating was prepared, which has the advantages of good heat dissipation effect, low raw material price, environmental friendliness and quick and simple preparation method.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a graphene heat dissipation coating and a preparation method thereof. Background technique [0002] With the rapid development of the electronics industry, modern electronic equipment is increasingly becoming a highly integrated system with high-density assembly, which makes the heat flux density of the product increasingly larger. If the heat dissipation capacity of the product is insufficient, the temperature of components and circuits will rise, which will cause thermal deformation and thermal failure of the equipment, affecting the performance and life of electronic products. In addition, in the fields of metallurgy, petrochemical, ceramics, medicine and other industries, various industrial boilers, power plant boilers, flame furnaces and other furnaces are often involved, and their heat dissipation performance is very important to the safety of personnel and the reliable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D163/00C09D175/04C09D7/61C09D7/65C09D7/20
CPCC09D183/04C08K2201/011C08L2201/08C09D163/00C09D175/04C08L91/00C08K7/08C08K3/04
Inventor 刘乐光
Owner 厦门信果石墨烯科技有限公司
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