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Dynamic amphiphobic coating, preparation method, use method and dynamic amphiphobic coating

An amphiphobic coating, a dynamic technology, applied in coatings, devices for coating liquids on surfaces, and pretreatment surfaces, etc., can solve problems such as loss, substrate exposure, chemical corrosion damage, etc., and achieve improved hydrophobicity and oil repellency, flexibility good sex effect

Active Publication Date: 2021-07-16
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the number of times of use of the existing dynamic amphobic coating increases, the coating will be damaged by physical friction and chemical corrosion, resulting in a decrease in the optical properties of the coating, and a significant weakening or even complete loss of hydrophobic and oil-repellent capabilities, resulting in The substrate is exposed and loses its protective effect, so it is necessary to invent a dynamic amphobic coating with good optical transparency and mechanical stability

Method used

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  • Dynamic amphiphobic coating, preparation method, use method and dynamic amphiphobic coating
  • Dynamic amphiphobic coating, preparation method, use method and dynamic amphiphobic coating
  • Dynamic amphiphobic coating, preparation method, use method and dynamic amphiphobic coating

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preparation example Construction

[0046] refer to figure 1 , the embodiment of the present invention provides a kind of preparation method of dynamic amphiphobic coating, specifically comprises:

[0047] Step S10: mixing the above-mentioned polymercapto resin and the above-mentioned siloxane polymer containing carbon-carbon double bonds in a solvent to obtain a resin solution.

[0048]Put the above-mentioned polymercapto resin and the above-mentioned siloxane polymer containing carbon-carbon double bonds into a solvent containing at least one of ethyl acetate, tetrahydrofuran, butyl acetate, N,N-dimethylformamide or acetone, The polymercapto resin and the siloxane polymer containing carbon-carbon double bonds are dissolved in the solvent, the siloxane polymer containing carbon-carbon double bonds and the polymercapto resin provide sufficient crosslinking sites, and the carbon-carbon double bond The chain segment of the bonded siloxane polymer has good flexibility, and it is easy to migrate to the surface of t...

Embodiment 1

[0070] Dissolve 7 parts of trimethylolpropane tris(3-mercaptopropionate) and 20 parts of a copolymer of (acetoxypropyl)methicone and dimethylsiloxane in 72.7 parts of ethyl acetate , under the dark condition, add 1 part of benzoin dimethyl ether, and magnetically stir for 2 hours to obtain a dynamic amphobic coating. Finally, the base material was immersed in the dynamic amphiphobic coating for 5 minutes, then taken out, baked at 80°C for 0.5 hour, put into a UV curing machine, and after 10 minutes of UV curing, the dynamic amphiphobic coating was obtained.

Embodiment 2

[0072] Take 20 parts of pentaerythritol tetrakis(3-mercaptopropionate), 0.5 parts of dibutylamine and 54.5 parts of acetone in a flask, turn on the magnetic stirring, and after mixing evenly, add 25 parts of 1H,1H,2H,2H-perfluoroacrylic acid decyl The ester was added dropwise to the above solution, stirred by magnetic force for 10 h, and the acetone was removed by rotary evaporation to obtain a fluorine-modified mercapto resin.

[0073] Get 2 parts of tetrakis(3-mercaptopropionate) pentaerythritol esters and 10 parts of (acryloyloxy) methylsiloxane homopolymer and 1 part of prepared fluorine-modified mercapto resin dissolved in 86.9 parts of ethyl acetate , under dark conditions, add 0.1 part of benzoin ethyl ether, and magnetically stir for 30 minutes to obtain a dynamic amphiphobic coating. Finally, the above-mentioned dynamic amphiphobic coating was coated on the base material by the method of curtain coating, after being baked at 40°C for 2 hours, put into a UV curing mach...

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Abstract

The invention relates to the technical field of surface protection coating materials, in particular to a dynamic amphiphobic coating material, a preparation method, a using method and a dynamic amphiphobic coating. The dynamic amphiphobic coating material is prepared from 2-15 parts of multi-sulfydryl resin, 10-30 parts of siloxane polymer containing carbon-carbon double bonds and 49-86.9 parts of a solvent. Sufficient cross-linking sites are provided by utilizing the multi-sulfydryl resin, a large number of cross-linking sites are provided by the carbon-carbon double bonds in branched chains of the siloxane polymer containing the carbon-carbon double bonds, the chain segment flexibility of the siloxane polymer is relatively good, the siloxane polymer is easy to migrate to the surface of the coating to form a polymer brush with low surface energy, and the hydrophobic and oleophobic properties of the coating are improved. The resin containing sulfydryl and the siloxane polymer containing carbon-carbon double bonds form a compact network structure through multifunctional reaction and high-degree crosslinking, so that the coating has the characteristic of high hardness, and the situation that a coating layer is damaged due to physical friction and chemical corrosion, so that a base material is exposed, and the protective effect is lost is avoided.

Description

technical field [0001] The invention relates to the technical field of surface protective coating materials, in particular to a dynamic amphobic coating, a preparation method, a use method and the dynamic amphobic coating. Background technique [0002] Dynamic amphobic coating means that when water and organic media with low surface energy are in contact with the coating, when the coating is tilted to a certain angle, droplets can easily slide off the surface of the coating without leaving traces. liquid capacity. Dynamic amphiphobic coatings have a wide range of application values ​​in human production and life, and can be applied to anti-fingerprint touch screens, self-cleaning clothes, non-stick pans, range hoods, crude oil transportation pipelines and other fields. However, as the number of times of use of the existing dynamic amphobic coating increases, the coating will be damaged by physical friction and chemical corrosion, resulting in a decrease in the optical prope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/06C09D181/02C09D7/63B05D7/24B05D3/02B05D3/06
CPCC09D183/06C09D7/63B05D7/24B05D3/0254B05D3/067C08L2312/00C08L81/02C08K5/37
Inventor 孙小英刘晶施利毅杭建忠
Owner SHANGHAI UNIV
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