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A kind of corrosion-resistant heat-conducting coating and preparation method thereof

A heat-conducting coating and corrosion-resistant technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of poor coating adhesion, poor corrosion resistance, poor dispersion of filler boron nitride, etc. Achieve the effects of increasing thermal conductivity and corrosion resistance, improving barrier performance, and prolonging the diffusion channel of corrosive media

Inactive Publication Date: 2021-02-09
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a corrosion-resistant thermally conductive coating, which solves the problem of poor dispersion of filler boron nitride, poor coating adhesion, and poor corrosion resistance in existing thermally conductive coatings. , and the problem of using volatile solvents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A corrosion-resistant thermally conductive coating includes the following components by weight: 100 parts of water-based film-forming resin, 30 parts of curing agent, 0.4 parts of leveling agent, 0.2 parts of defoamer, 10 parts of carboxylic acid modified boron nitride, fluorine 1.5 parts of graphene oxide and 50 parts of diluent.

[0027] 1) Add hexagonal boron nitride micro-nano powder with a particle size of less than 20 μm into a reaction kettle filled with hydrogen peroxide at a concentration of 30%, so that the mass ratio of boron nitride to hydrogen peroxide is 1:50, and after ultrasonic dispersion for 5 minutes, the The reaction kettle was placed in a water bath at 100°C for 48 hours. During the reaction, it was sonicated for 15 minutes every 3 hours. After the reaction, the solvent was evaporated, and the solid was washed with deionized water for 3 times, and dried in vacuum to obtain hydroxy boron nitride.

[0028] 2) Add deionized water to the hydroxyl boron ...

Embodiment 2

[0031]A corrosion-resistant thermally conductive coating includes the following components by weight: 110 parts of water-based film-forming resin, 35 parts of curing agent, 0.3 parts of leveling agent, 0.3 parts of defoamer, 15 parts of carboxylic acid modified boron nitride, fluorine 1.0 parts of graphene oxide and 60 parts of diluent.

[0032] 1) Add hexagonal boron nitride micro-nano powder with a particle size of less than 20 μm into a reaction kettle filled with 30% hydrogen peroxide, so that the mass ratio of boron nitride to hydrogen peroxide is 1: 100, and after ultrasonic dispersion for 5 minutes, the The reaction kettle was placed in a water bath at 100°C for 48 hours. During the reaction, it was sonicated for 15 minutes every 3 hours. After the reaction, the solvent was evaporated, and the solid was washed with deionized water for 3 times, and dried in vacuum to obtain hydroxy boron nitride.

[0033] 2) Add deionized water to the hydroxyl boron nitride obtained in s...

Embodiment 3

[0036] A corrosion-resistant thermally conductive coating comprises the following components by weight: 120 parts of water-based film-forming resin, 40 parts of curing agent, 0.5 parts of leveling agent, 50.4 parts of defoaming agent, 20 parts of carboxylic acid modified boron nitride, fluorine 0.5 parts of graphene oxide and 70 parts of diluent.

[0037] 1) Add hexagonal boron nitride micro-nano powder with a particle size of less than 20 μm into a reaction kettle filled with hydrogen peroxide at a concentration of 30%, so that the mass ratio of boron nitride to hydrogen peroxide is 1: 150. After ultrasonic dispersion for 5 minutes, the The reaction kettle was placed in a water bath at 100°C for 48 hours. During the reaction, it was sonicated for 15 minutes every 3 hours. After the reaction, the solvent was evaporated, and the solid was washed with deionized water for 3 times, and dried in vacuum to obtain hydroxy boron nitride.

[0038] 2) Add deionized water to the hydroxyl...

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Abstract

The invention discloses a corrosion-resistant heat conduction coating and a preparation method thereof. The coating comprises the following components in parts by weight: 100-120 parts of an aqueous film formation resin, 30-40 parts of a curing agent, 0.3-0.6 part of a leveling agent, 0.2-0.4 part of a defoaming agent, 10-20 parts of carboxylic acid modified boron nitride, 0.5-1.5 parts of fluorinated graphene oxide and 50-80 parts of a diluent. Carboxylic phthalocyanine and hydrogen peroxide are adopted as raw materials for modifying hexagonal boron nitride in sequence, a modified filler hasgood compatibility with a coating substrate, then the prepared coating has good stability and excellent mechanical properties, and the heat radiation performance of the coating can be effectively improved; the modified composition is of a pi-pi piling structure, the specific surface area of the modified composition can be increased, the adsorption function of the coating with a substrate is effectively improved, meanwhile, the barrier property of the coating can be greatly improved, a corrosive medium diffusion channel can be prolonged, and the corrosion resistance of the coating can be greatly improved. The raw materials are simple and easy to obtain, the coating is free of VOC (volatile organic compound) volatilization, safe and environmentally friendly and low in cost, the preparation method is simple and easy to control, industrial production can be easily achieved, and good application prospects can be achieved.

Description

technical field [0001] The invention relates to the technical field of thermally conductive coatings, in particular to a corrosion-resistant thermally conductive coating and a preparation method thereof. Background technique [0002] Thermally conductive coatings are designed to improve the heat dissipation efficiency of the surface of the coated object and reduce the internal temperature of the system. At present, common thermal conductive coatings mainly use polymers as film-forming substances, and high thermal conductivity fillers are added to enhance the thermal conductivity of the coating, so as to achieve the purpose of heat dissipation and cooling. There are two problems in the process of use: one is that the film-forming agent is mostly oily resin, and the solvent generally uses toxic solvents such as toluene, xylene, and methylene chloride, which cause great harm to human health and the environment; the other is the radiator. During use, it will cause heat accumula...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/62C09D7/20
CPCC08K2003/385C09D5/08C09D163/00C09D7/20C09D7/62C08K9/02C08K9/04C08K3/38C08K3/042
Inventor 李明田吴猛崔学军王莹钟丽萍杨丹
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING