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Super-hydrophilic anti-dirt self-repairing coating, preparation method of coating and coating

An anti-fouling and self-healing technology, applied in the field of coatings, can solve the problems of being easily damaged, not very satisfactory, and difficult to maintain super-hydrophilicity, so as to achieve the effect of improving hydrophilicity and improving hydrophilicity.

Active Publication Date: 2022-07-29
江苏易米新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used organosilicon compounds improve the water resistance, weather resistance, oxidation resistance, solvent resistance, UV resistance and service life of the adhesive layer to a certain extent, but the water resistance and weather resistance of the coating cannot always make people Very satisfied because the microstructure of its surface is easily damaged during use, making it difficult to maintain stable superhydrophilicity

Method used

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  • Super-hydrophilic anti-dirt self-repairing coating, preparation method of coating and coating
  • Super-hydrophilic anti-dirt self-repairing coating, preparation method of coating and coating
  • Super-hydrophilic anti-dirt self-repairing coating, preparation method of coating and coating

Examples

Experimental program
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Effect test

Embodiment 1A

[0027]In this embodiment, the initiator is azobisisoheptanenitrile (AVBN), West Asia Chemical. The polycaprolactone-modified acrylic resins are polycaprolactone-modified methacrylate and hydroxyethyl methacrylate, wherein the polycaprolactone-modified methacrylate and hydroxyethyl methacrylate are The mass ratio was 12:4, polycaprolactone-modified polyhydroxyethyl methacrylate (HEMA-PCL), Xi'an Qiyue Biotechnology; hydroxyethyl methacrylate (HEMA), Aladdin. The polyester polyol is polycaprolactone triol PCL2000, BASF. The reactive sulfonate is alkyl allyl succinate sulfonate, Eleminol JS20, Sanyo Chemicals, Japan. The chain extender is 1,4-butanediol. The isocyanate curing agent is an HDI trimer curing agent, and the HDI trimer curing agent is specifically Desmodur N3600 of the German Covestro Group.

[0028] The preparation method of the superhydrophilic antifouling self-healing coating comprises the following steps:

[0029] Step S1, add 40g ethyl acetate to the reaction...

Embodiment 1B

[0033] The same parts of Example 1B and Example 1A omit the same description, and the difference between Example 1B and Example 1A is that the isocyanate curing agent is HXDI trimer curing agent, and the HXDI trimer curing agent is Japan Mitsui Chemicals Co., Ltd. The TAKENATE D-120N. In step S2, 5 g of curing agent TAKENATED-120N and 11 g of ethyl acetate were added.

Embodiment 2A

[0035] The same parts of Example 2A and Example 1A are omitted, and the difference between Example 2A and Example 1A is: the reactive sulfonate is fatty alcohol polyoxyethylene ether sulfonate, fatty alcohol polyoxyethylene ether sulfonic acid Salt is produced by Hubei Xinghengye Technology.

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Abstract

The invention provides a super-hydrophilic anti-smudginess self-repairing coating, a preparation method of the coating and the coating, and the preparation method of the coating comprises the following steps: step 1, adding a solvent into a reaction container, adding an initiator, polycaprolactone modified acrylic resin, reactive sulfonate, polyester polyol and a chain extender into the reactor under the protection of inert gas, and stirring to obtain a mixture; reacting for 8-48 hours at the temperature of 85-100 DEG C to obtain synthetic resin containing carbon-carbon double bonds, and reactive functional groups of the reactive sulfonate at least comprise the carbon-carbon double bonds; and step 2, under the protection of inert gas, adding an isocyanate curing agent into the reaction container, continuously stirring for 10-30 minutes, filtering, removing bubbles, blade-coating and drying to prepare the super-hydrophilic anti-smudginess self-repairing coating, coating the surface of an object with the coating, and forming a coating after curing and film forming to obtain the super-hydrophilic anti-smudginess self-repairing coating. The coating provided by the invention has the advantages of super hydrophilicity, smudginess resistance, low haze, high light transmittance and high glossiness.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a super-hydrophilic and anti-fouling self-healing coating, a preparation method of the coating and the coating. Background technique [0002] At present, many stealth car coats and color-changing car coats at home and abroad have self-healing functions. These self-healing coatings greatly improve the gloss and self-healing ability of the protective film, and are constantly used in other fields such as aircraft. In the field of surface protection, such as helicopters, fighter jets or wind power blades, in actual use, we found that the surface protective coating not only needs to have excellent self-healing properties, but also needs to have excellent super-hydrophilic properties to achieve self-cleaning and anti-dirty properties. Staining enhances the gloss and clarity of the coated surface. [0003] Polymer self-healing materials can provide energy to materials thro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C08G18/32C08G18/42C08G18/62C08G18/66C08G18/67
CPCC09D175/14C08G18/6229C08G18/4277C08G18/664C08G18/3206C08G18/672C08G18/3228C08G18/6651C08G18/42
Inventor 于锦李亚兵
Owner 江苏易米新材料科技有限公司
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