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Graphene electrothermal paint

An electrothermal coating and graphene technology, applied in the field of coatings, can solve the problems of poor coating adhesion, shortened service life, and easy peeling of the coating, and achieve the effects of fast heating speed, energy saving, and excellent weather resistance

Inactive Publication Date: 2016-11-09
汤海涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The resistance of commonly used thermally conductive coatings is more than tens of ohms. If the resistance is further reduced by adding conductive materials, the adhesion of the coating will be deteriorated, and the coating will be easily peeled off. Not only can the resistance be reduced, but its service life will be shortened.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A graphene electrothermal coating, its composition in mass parts is as follows: 10 parts of graphene, 5 parts of antimony pentoxide, 5 parts of tungsten oxide, 2 parts of silver powder, 1 part of halogen-free flame retardant, 8 parts of resin for screen printing, 1.8 parts of acetone, 8 parts of polyurethane resin, 10 parts of polypyrrole, 0.8 parts of adhesion promoter, 10 parts of melamine resin, 2 parts of calcined stone tar, 0.8 parts of modified phosphate compound, and 2 parts of spray carbon black.

[0024] Wherein, the particle size of graphene is 800 mesh.

[0025] Among them, AP-3000 is selected as the adhesion promoter.

[0026] Wherein, the solvent that polyurethane resin uses is ethyl acetate, xylene and cyclohexanone, and the volume ratio of ethyl acetate, xylene and cyclohexanone is 3:5:2.

[0027] Among them, the halogen-free flame retardant is modified magnesium hydroxide, which is obtained by treating the surface of magnesium hydroxide with coating tec...

Embodiment 2

[0030] A graphene electrothermal coating, its mass parts are composed as follows: 11 parts of graphene, 6 parts of antimony pentoxide, 6 parts of tungsten oxide, 3 parts of silver powder, 1.2 parts of halogen-free flame retardant, 9 parts of resin for screen printing, 2.1 parts of acetone, 8.8 parts of polyurethane resin, 11 parts of polypyrrole, 1.2 parts of adhesion promoter, 12 parts of melamine resin, 3 parts of calcined stone tar, 1.2 parts of modified phosphate compound, 3 parts of spray carbon black.

[0031] Wherein, the particle size of graphene is 1000 mesh.

[0032] Among them, AP-3000 is selected as the adhesion promoter.

[0033] Wherein, the solvent that polyurethane resin uses is ethyl acetate, xylene and cyclohexanone, and the volume ratio of ethyl acetate, xylene and cyclohexanone is 3:5:2.

[0034] Among them, expandable graphite is selected as the halogen-free flame retardant; expandable graphite is obtained from natural graphite acidified by concentrated s...

Embodiment 3

[0037] A graphene electrothermal coating, its mass parts are composed as follows: 12 parts of graphene, 8 parts of antimony pentoxide, 8 parts of tungsten oxide, 5 parts of silver powder, 2 parts of halogen-free flame retardant, 12 parts of resin for screen printing, 4 parts of acetone, 12 parts of polyurethane resin, 15 parts of polypyrrole, 1.2 parts of adhesion promoter, 15 parts of melamine resin, 5 parts of calcined stone tar, 1.6 parts of modified phosphate compound, 4 parts of spray carbon black.

[0038] Wherein, the particle size of graphene is 1000 mesh.

[0039] Among them, AP-3000 is selected as the adhesion promoter.

[0040] Wherein, the solvent that polyurethane resin uses is ethyl acetate, xylene and cyclohexanone, and the volume ratio of ethyl acetate, xylene and cyclohexanone is 3:5:2.

[0041] Among them, the halogen-free flame retardant is modified magnesium hydroxide, which is obtained by treating the surface of magnesium hydroxide with coating technology...

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Abstract

The invention relates to the technical field of paint and especially relates to graphene electrothermal paint. The graphene electrothermal paint comprises, by mass, 10-15 parts of graphene, 5-10 parts of antimony pentoxide, 5-12 parts of tungsten oxide, 2-8 parts of aluminum powder, 1-3 parts of a halogen-free fire retardant, 8-16 parts of screen printing resin, 1.8-6.4 parts of acetone, 8-16 parts of polyurethane resin, 10-20 parts of polypyrrole, 0.8-1.6 parts of an adhesion promoter and 10-20 parts of melamine resin. The graphene electrothermal paint does not discolor under high temperature rapid baking, has excellent coating weatherability, keeps effects under baking at a high temperature of 280 DEG C or more, has good resin intermiscibility, does not influence paint storage stability, can form a very thin electrothermal coating, has high electrothermal conversion efficiency and a fast heating rate, saves energy, prevents conductive belt oxidation and prevents oxygen burning in heating.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a graphene electrothermal coating. Background technique [0002] As we all know, the existing electrothermal film is mainly composed of graphite powder semiconductor conductive powder and inorganic film-forming agents of various oxides such as lead oxide, silicon oxide, magnesium oxide, silicon oxide and boron oxide, metal powder and water-soluble organic film-forming agent. The solvents are blended with each other to form a conductive coating. The prepared semi-conductive conductive coating is sprayed or printed, and the conductive coating is directly sprayed onto the surface of the medium that has been cleaned and dried, and then baked and dried at high temperature. After high-temperature winding treatment, the raw material of the electric heating film forms an overlapping microscopic electrification network on the surface of the medium for uniform heating. [0003] The resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/04C09D161/28C09D175/04C09D201/00C09D7/12
CPCC09D179/04C08K2201/014C08L2205/035C09D7/61C09D7/62C09D161/28C08L61/28C08L75/04C08L101/00C08K13/06C08K9/00C08K9/10C08K2003/2224C08K2003/321C08K3/04C08K3/2279C08K2003/0806C08L79/04C08K9/02C08K7/24
Inventor 汤海涛
Owner 汤海涛
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