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Modified graphene heat radiation paint, and preparation method thereof

A technology of heat-dissipating coatings and graphene, which is applied in anti-corrosion coatings, coatings, etc., can solve the problems of small thermal conductivity of thermally conductive adhesives, difficulty in achieving heat dissipation, and limited use occasions, achieving stable performance and facilitating large-scale promotion. The effect of improving stability and service life

Inactive Publication Date: 2019-08-09
GUANGDONG MORION NANOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermal conductivity of thermal adhesive is very small, it is difficult to achieve heat dissipation effect
The heat sink is a metal sheet, and the use occasions are limited
The heat dissipation film is artificial graphite paper, which can only dissipate heat on a plane, and cannot dissipate heat for components and machinery with complex structures
Traditional heat-dissipating coatings are mainly used to cool down high-temperature equipment, and heat dissipation is limited under low-temperature conditions

Method used

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  • Modified graphene heat radiation paint, and preparation method thereof
  • Modified graphene heat radiation paint, and preparation method thereof
  • Modified graphene heat radiation paint, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A modified graphene heat-dissipating coating, comprising the following raw materials in parts by weight: 70 parts of silicone resin, 20 parts of modified graphene powder, 5 parts of inorganic filler, 1.5 parts of curing agent, 12 parts of solvent, 3 parts of dispersant and Leveling agent 3 parts.

[0035] The silicone resin can be cross-linked to form a network chemical structure. The silicone resin is Xilikang silicone rubber.

[0036] The modified graphene powder adopts the modified compound as silane coupling agent KH570.

[0037] The inorganic filler is silicon carbide.

[0038] The solvent is simethicone.

[0039] A preparation method of a modified graphene heat-dissipating coating, comprising the steps of: A, mechanically exfoliating graphite powder to prepare a graphene slurry, which is dried into a graphene powder for subsequent use; B, chemically modified graphene, dried into a powder body, for subsequent use; C, the modified graphene powder in the organosi...

Embodiment 2

[0046] The difference between this embodiment and the above-mentioned embodiment 1 is:

[0047] A modified graphene heat-dissipating coating, comprising the following raw materials in parts by weight: 70 parts of silicone resin, 20 parts of modified graphene powder, 5 parts of inorganic filler, 1.5 parts of curing agent, 12 parts of solvent, 3 parts of dispersant and Leveling agent 3 parts.

[0048] The modified graphene powder adopts titanate coupling agent Ti201 as a modification compound.

[0049] The inorganic filler is silicon nitride.

[0050] The solvent is N,N-dimethylformamide.

[0051] The step A is specifically: take 1 weight part of flake graphite, mix it with 5 weight parts of deionized water, add 0.01 weight part of SDBS dispersant with a mass fraction of 1%, and use a sand mill under the condition of 2000r / min The graphene slurry was prepared by mechanical exfoliation for 6 hours, washed with deionized water for several times, then suction-filtered, and dried i...

Embodiment 3

[0056] A modified graphene heat dissipation coating, comprising the following raw materials in parts by weight: 50 parts of silicone resin, 1 part of modified graphene powder, 1 part of inorganic filler, 1 part of curing agent, 5 parts of solvent, 1 part of dispersant and Leveling agent 1 part.

[0057] The modified graphene powder uses a modified compound as an aluminate coupling agent.

[0058] The inorganic filler is silicon powder.

[0059] The solvent is N,N-dimethylformamide.

[0060] The step A is specifically: take 0.8 parts by weight of flake graphite, mix it with 3 parts by weight of deionized water, add 0.005 parts by weight of SDBS dispersant with a mass fraction of 0.5%, and use a sand mill under the condition of 1500r / min The graphene slurry was prepared by mechanical exfoliation for 8 hours, washed with deionized water several times, then suction-filtered, and dried in a vacuum oven to form graphene powder; wherein, the particle size of the flake graphite was ...

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Abstract

The invention belongs to the technical field of heat radiation paint, and more specifically relates to a modified graphene heat radiation paint, and a preparation method thereof. The modified grapheneheat radiation paint comprises following raw materials, by weight, 50 to 95 parts of silicone resin, 1 to 35 parts of modified graphene powder, 1 to 10 parts of an inorganic filler, 1 to 2 parts of acuring agent, 5 to 20 parts of a solvent, 1 to 5 parts of a dispersant, and 1 to 5 parts of a leveling agent. The modified graphene heat radiation paint possesses advantages such as excellent heat dissipation performance, stable performance, controllable coating thickness, light weight and low cost, and possesses certain anti-corrosion property and acid and alkali resistance, and is capable of improving and prolonging the stability and service life of coated electronic components and mechanical equipment.

Description

technical field [0001] The invention relates to the technical field of heat dissipation coatings, in particular to a modified graphene heat dissipation coating and a preparation method thereof. Background technique [0002] With the development of electronic equipment and lighting equipment towards miniaturization, large-scale integration and high power, more and more heat will be generated during the operation of integrated circuits in electronic equipment, and the parts that generate heat are more concentrated. If the heat cannot be transferred out in time, the working efficiency and service life of the equipment will be greatly reduced, or even fail. [0003] At present, the common heat dissipation materials in the market mainly include heat dissipation silicone grease, heat conduction glue, heat sink, heat dissipation film, and traditional heat dissipation paint. The heat dissipation silicone grease is composed of silicone oil and filler, and the silicone oil will preci...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D5/08C09D7/62C09D7/61
CPCC09D5/08C09D183/04C09D7/61C09D7/62C09D7/70C08K3/042C08K7/00C08K9/06C08K3/34C08K9/04C08K3/36
Inventor 蔡金明田力文蔡晓明
Owner GUANGDONG MORION NANOTECHNOLOGY CO LTD