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Coating, a preparing method thereof, two-component coating comprising the coating and a component

A two-component, component technology, applied in the field of coatings, can solve the problems of reliability and safety, electronic components or electrical appliances are easy to accumulate dust, shorten the service life of electronic components or electrical appliances, etc., to improve safety and reliability , enhance hydrophobic and dustproof performance, overcome the effect of poor heat dissipation

Inactive Publication Date: 2017-08-29
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In practical applications, due to the effects of static electricity, moisture and organic pollutants, electronic components or electrical appliances are prone to dust accumulation, especially the heat dissipation part of electronic components or electrical appliances has a large expansion area, compact structure, and dense fins. Long-term use very easy to accumulate dust
Usually, the heat dissipation part of electronic components or electrical appliances is made of aluminum alloy or copper with a large heat dissipation coefficient. Finally, the thermal conductivity K value decreases (the thermal conductivity of copper is usually 380W / m·k, the thermal conductivity of aluminum alloy is usually 150-180W / m·k, and the thermal conductivity of dust is 10W / m·k), therefore, The heat transfer coefficient will be greatly attenuated, which greatly reduces the heat dissipation of the heat dissipation part, and the surface is easy to absorb moisture after dust accumulation. In a long-term humid environment, aluminum alloy or copper will chemically corrode with sulfide in air pollutants, etc. , which will shorten the service life of electronic components or electrical appliances, and may also cause reliability and safety problems

Method used

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  • Coating, a preparing method thereof, two-component coating comprising the coating and a component
  • Coating, a preparing method thereof, two-component coating comprising the coating and a component

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preparation example Construction

[0040] In a second aspect, an embodiment of the present invention provides a method for preparing the coating as described above, including:

[0041] Mix the polymer monomer of the film-forming substance, the dispersion liquid of solid microspheres and the reaction solvent, and cause the polymer monomer of the film-forming substance to undergo a bulk polymerization reaction under the action of the initiator to obtain the film-forming substance containing the Substance, the coating of the solid microsphere and the dispersion medium; wherein, the film-forming substance is a polymer with a surface dyne value less than or equal to 36 dyn / cm, the surface friction coefficient of the solid microsphere is less than or equal to 0.1, and the The film-forming substance can coat the solid microspheres on the surface of the film-forming substance during film formation.

[0042] The embodiment of the present invention provides a method for preparing a coating, by mixing the polymer monomer ...

Embodiment 1

[0077] Add 700g ethyl acetate, 37.59g butyl acetate, 2g fatty alcohol polyoxyethylene ether, 5g0.12μm mass fraction of 20% polytetrafluoroethylene dispersion and 51.59g butyl acrylate, 44.22g methacrylic acid in the reactor Methyl ester, 22.11g of hydroxyethyl methacrylate, 29.48g of dodecafluoroheptyl methacrylate, stir evenly and then raise the temperature to 90°C, dropwise add about 0.59g of azobisisobutyronitrile and 58.41g of acetic acid within 3h The initiator solution (mass fraction: 1%) configured with ethyl ester was kept at the temperature for 1 h after the dropwise addition was completed, and then cooled to normal temperature to obtain the A coating.

[0078] After mixing the coating A and the curing agent B containing NCO groups according to the molar ratio of -NCO / -OH=1, spray the coating on the surface of the laser radiator material, bake at 60°C for 30 minutes, and form a Coating with a thickness of 15 μm.

[0079] The dyne value of the surface of the sprayed F...

Embodiment 2

[0081] Add 983.99g ethyl acetate, 1g fatty alcohol polyoxyethylene ether, 2g0.4μm mass fraction to 50% polytetrafluoroethylene dispersion and 39.55g butyl acrylate, 63.28g methyl methacrylate, 15.82g Hydroxyethyl methacrylate, 19.5g hexafluorobutyl methacrylate, 20.06g trifluoroethyl methacrylate, stir evenly, heat up to 91°C, dropwise add about 0.2g azobisisobutyronitrile within 3 hours , 0.59g benzoyl peroxide and 15.01g ethyl acetate are configured with the initiator solution (mass fraction is 5%), continue to keep temperature 2 hours after dropwise addition is completed, be cooled to normal temperature, obtain A coating.

[0082] After mixing the coating A and the curing agent B containing NCO groups according to the molar ratio of -NCO / -OH=1.03, spray the coating on the surface of the laser projector housing, and dry it at 65°C for 25 minutes. A coating with a thickness of 15 μm is formed on the surface.

[0083] The surface dyne value after testing spraying was 32dyn / cm...

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Abstract

The invention relates to the technical field of coating, particularly coating, a preparing method thereof, two-component coating comprising the coating and a component. The coating can achieve dust-proof and hydrophobic functions after adoption, thus increasing heat dissipation effects of electronic components or electric appliances, and improving using safety and reliability of the electronic components or electric appliances. The coating is provided in an embodiment and includes a film forming compound, solid microspheres and a dispersion medium used for dispersing the film forming compound and the solid microspheres. The film forming compound is a polymer the surface Dyne value of which is not more than 36 dyn / cm. The surface friction coefficient of the solid microspheres is not more than 0.1. The film forming compound can be coated with the solid microspheres when the film forming compound forms film. Embodiments of the invention are used for production and preparation of dust-proof and hydrophobic coating.

Description

technical field [0001] The invention relates to the technical field of paint, in particular to a paint and a preparation method thereof, a two-component paint containing the paint and components. Background technique [0002] With the rapid development of science and technology, the density and miniaturization of integrated circuits is getting higher and higher, and electronic components or electrical appliances become smaller and run at higher speeds, making their requirements for heat dissipation higher and higher. [0003] In practical applications, due to the effects of static electricity, moisture and organic pollutants, electronic components or electrical appliances are prone to dust accumulation, especially the heat dissipation part of electronic components or electrical appliances has a large expansion area, compact structure, and dense fins. Long-term use It is very easy to accumulate dust afterwards. Usually, the heat dissipation part of electronic components or e...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D127/08C08F220/18C08F220/14C08F220/28C08F220/22
CPCC08F220/14C08F220/18C08F220/1804C08L2203/20C09D175/04C08L27/18C08F220/281C08F220/22
Inventor 邢哲
Owner HISENSE VISUAL TECH CO LTD
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