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Thermal repair coating and preparation method and application thereof

A technology for thermal repair and paint, applied in the field of paint, can solve the problems of inability, insufficient thermal repair performance, no self-repair function, etc., and achieve the effect of simple synthesis operation and easy to obtain.

Active Publication Date: 2021-12-31
广东粤港澳大湾区黄埔材料研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the domestic invisible car cover technology is still in its infancy and development stage. The top coating of most invisible car covers has the problem of insufficient thermal repair performance, resulting in that the car cover cannot be repaired by heating after being scratched. Scratches need to be replaced regularly. Although the car coat top coating material disclosed in the patent CN113278353A can be repaired instantly at normal temperature, it needs to be replaced with a new car coat after scratching for a long time, and cannot be repaired by heating; the car coat disclosed in the patent CN113072873A Top coat materials are not self-healing

Method used

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  • Thermal repair coating and preparation method and application thereof
  • Thermal repair coating and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0035] This embodiment provides a heat repair coating, which is prepared from the following raw materials in parts by weight: 200 parts of isocyanate, 192 parts of hydroxyl polyether polyol, 20 parts of silicone modified acrylate, 10 parts of catalyst, and chain extender 102 parts, 5 parts of antioxidant, 8 parts of anti-ultraviolet auxiliary agent, 750 parts of solvent, 10 parts of dispersant, 10 parts of defoaming agent, wherein, isocyanate is TDI; Hydroxyl polyether polyol is trihydroxy polyether polyol, molecular weight 1000, polyether for CASE purchased from Dow Chemical Company; silicone modified acrylate purchased from Dongguan Shanmu Technology New Material Company, model is 6730; catalyst is dibutyltin dilaurate; chain extender is trimethylol base propane; antioxidant is 2,6-di-tert-butyl-4-methylphenol; anti-ultraviolet additive is benzotriazole; solvent is a mixture of butanone, ethyl acetate and tetrahydrofuran (weight ratio of butanone: acetic acid Ethyl ester: te...

Embodiment 2

[0043]This embodiment provides a heat repair coating, which is prepared from the following raw materials in parts by weight: 287 parts of isocyanate, 192 parts of hydroxyl polyether polyol, 20 parts of silicone modified acrylate, 10 parts of catalyst, and chain extender 102 parts, 5 parts of antioxidant, 8 parts of anti-ultraviolet auxiliary agent, 750 parts of solvent, 10 parts of dispersant, 10 parts of defoamer, wherein, isocyanate is MDI; hydroxyl polyether polyol is trihydroxy polyether polyol, molecular weight 1000, purchased from the CASE polyether of Dow Chemical Company; Silicone modified acrylate was purchased from Dongguan Shanmu Science and Technology New Material Company, model is 6730; Catalyst is bismuth neodecanoate; Chain extender is trimethylol Propane; Antioxidant is 2,6-di-tert-butyl-4-methylphenol; Anti-ultraviolet auxiliary agent is benzophenone; Solvent is the mixture of butanone, ethyl acetate and tetrahydrofuran (weight ratio of butanone: ethyl acetate ...

Embodiment 3

[0051] This embodiment provides a heat repair coating, which is prepared from the following raw materials in parts by weight: 175 parts of isocyanate, 250 parts of hydroxyl polyether polyol, 20 parts of silicone modified acrylate, 20 parts of catalyst, and chain extender 90 parts, 8 parts of antioxidant, 5 parts of anti-ultraviolet auxiliary agent, 720 parts of solvent, 8 parts of dispersant, 10 parts of defoamer, wherein, isocyanate is HDI; hydroxyl polyether polyol is trihydroxy polyether polyol, molecular weight For 300, polyether was purchased from Dow Chemical Company's CASE; Silicone-modified acrylate was purchased from Dongguan Shanmu Science and Technology New Material Company, and the model was 6730; the catalyst was bismuth naphthenate; the chain extender was glycerol; The antioxidant is 3,5-di-tert-butyl-4-hydroxyphenyl tetraol ester; the anti-ultraviolet additive is 2-hydroxy-4-n-octyloxybenzophenone; the solvent is butanone, ethyl acetate and A mixture of tetrahyd...

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Abstract

The invention discloses a thermal repair coating and a preparation method and application thereof. The thermal repair coating provided by the invention comprises the following raw materials in parts by weight: 175 to 300 parts of isocyanate; 150 to 250 parts of hydroxyl polyether polyol; 10 to 20 parts of organic silicon modified acrylate; 10 to 30 parts of a catalyst; 90 to 110 parts of a chain extender; and 600 to 750 parts of a solvent. The thermal repair coating has denser hydrogen bonds, a polyurethane coating formed after heating and curing has a very dense hydrogen bond network structure, after being damaged by external force, the thermal repair coating can achieve a self-repair effect through temperature rising and heating, the used raw materials are easy to obtain, the synthesis operation is simple, and the thermal repair coating is suitable for industrial production and application.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a thermal restoration coating, a preparation method and application thereof. Background technique [0002] The traditional protective measures for the car surface are waxing and polishing the car paint surface, but this method requires the car to go to the maintenance organization for maintenance on a regular basis, which not only brings trouble to the car owner, but also increases the financial burden of the car owner. The invisible car cover has super toughness, which can not only prevent scratches, bumps, scratches and other physical damage, as well as chemical corrosion and oxidation caused by acid rain, bird droppings, gums, etc.; it can also further enhance the brightness of the car paint and play an aesthetic role. One of the most effective solutions for car paint maintenance at present. [0003] At present, the domestic invisible car cover technology is still in its infan...

Claims

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Application Information

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IPC IPC(8): C09D175/04C08J7/04C08L75/04
CPCC09D175/04C08J7/0427C08J2375/04C08J2475/04Y02P20/10
Inventor 袁黎光黄泽熹王杰崔庆实杨小牛
Owner 广东粤港澳大湾区黄埔材料研究院
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