Method for preparing hydrophilic antifogging coating

An anti-fog coating and hydrophilic technology, which is applied in the field of preparation of hydrophilic anti-fog coatings, can solve the problems of poor anti-fog performance, poor dispersion of anti-fog coatings, and long curing time of coatings, so as to promote photocatalysis and photodegradation effect, enhanced anti-fog performance, and increased cured crosslink density

Active Publication Date: 2018-07-20
上海大杉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

[0004] The technical problem mainly solved by the present invention: Aiming at the problems of poor dispersibility of existing anti-fog coatings, long coating curing time and poor anti-fog performance, a preparation method of hydrophilic anti-fog coatings is provided

Method used

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  • Method for preparing hydrophilic antifogging coating

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example 1

[0019] In parts by weight, weigh 45 parts of deionized water, 15 parts of 2% sodium alginate solution by mass fraction, 10 parts of 2% polycaprolactone chloroform solution by mass fraction, 5 parts of gemini quaternary ammonium salt YND1233 and 35 parts The pH is 7.0. Disodium hydrogen phosphate-sodium dihydrogen phosphate buffer solution is placed in a beaker, stirred and mixed for 10 minutes, and left to age to obtain a mixed solution. The mass fraction of 10% calcium chloride solution is added dropwise at a volume ratio of 1:10 Into the mixed solution, control the dropping rate at 3mL / min. After the dropwise addition is completed, continue to stir and mix and mature for 3h, centrifuge at 3500r / min and collect the lower precipitate, rinse with deionized water for 3 times, vacuum Freeze-dried and ground through a 200-mesh sieve to obtain modified microsphere powder; in parts by weight, weigh 45 parts of ethylene glycol ether, 10 parts of modified microsphere powder, 5 parts of...

example 2

[0021] In parts by weight, weigh 47 parts of deionized water, 17 parts of 2% sodium alginate solution by mass fraction, 12 parts of 2% polycaprolactone chloroform solution by mass fraction, 7 parts of gemini quaternary ammonium salt YND1233 and 37 parts The pH is 7.0. Disodium hydrogen phosphate-sodium dihydrogen phosphate buffer solution is placed in a beaker, stirred and mixed for 11 minutes, and left to age to obtain a mixed solution. The mass fraction of 10% calcium chloride solution is added dropwise at a volume ratio of 1:10 Into the mixed solution, control the dropping rate at 3mL / min. After the dropwise addition is completed, continue to stir and mix and ripen for 4h, centrifuge at 3750r / min and collect the lower precipitate, rinse with deionized water for 4 times, vacuum Freeze-dried and ground through a 200-mesh sieve to obtain a modified microsphere powder; in parts by weight, weigh 47 parts of ethylene glycol ether, 12 parts of modified microsphere powder, 6 parts o...

example 3

[0023] In parts by weight, weigh 50 parts of deionized water, 20 parts of 2% sodium alginate solution by mass fraction, 15 parts of 2% polycaprolactone chloroform solution by mass fraction, 8 parts of 12-3-12 type Gemini quarter Ammonium salt and 40 parts of pH 7.0 disodium hydrogen phosphate-sodium dihydrogen phosphate buffer solution were placed in a beaker, stirred and mixed for 12 minutes, and left to age to obtain a mixed solution. The volume ratio was 1:10, and the mass fraction was 10% chlorine Add the calcium chloride solution dropwise to the mixed solution, and control the dropping rate at 3mL / min. After the dropwise addition is completed, continue to stir and mix and mature for 5h, centrifuge at 4000r / min and collect the lower precipitate, rinse with deionized water After 5 times, vacuum freeze-dry and grind through a 200-mesh sieve to obtain modified microsphere powder; in parts by weight, weigh 50 parts of ethylene glycol ether, 15 parts of modified microsphere powd...

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Abstract

The invention discloses a method for preparing a hydrophilic antifogging coating, and belongs to the technical field of antifogging coatings. A material is modified with a gemini quaternary ammonium salt surfactant to improve the dispersion property of the resin base material in the coating improve the functionality of double-bonds in the coating, so the curing crosslinking density is effectivelyincreased, the mechanical properties of a prepolymer coating layer are effectively improved, and the curing time of the coating is greatly shortened; and a photocatalyst added in the invention effectively promotes photocatalysis and photodegradation effects and effectively decomposes the gemini quaternary ammonium salt surfactant formed by the hybridization of sodium alginate, so an uneven nano-coating layer structure is formed on the surface of the coating layer through photocatalytic degradation after the coating layer is cured, the antifogging property of small droplets is enhanced, the applicability of the antifogging coating layer is improved, the hydrophobic performance of the material is effectively improved, and the antifogging property of the material is improved.

Description

technical field [0001] The invention discloses a method for preparing a hydrophilic anti-fog coating, which belongs to the technical field of anti-fog coatings. Background technique [0002] As we all know, transparent substrates such as polycarbonate, polyethylene, polymethyl methacrylate and silicate glass have penetrated into all aspects of production and life, such as the lenses of various glasses commonly seen in daily life, chemical or biological protection, etc. Masks, vehicle windshields, solar panels, etc. They not only decorate our life and protect our environment, but also make full use of resources and promote economic growth. However, the phenomenon of fogging and fogging in nature affects the application of transparent substrates. Therefore, how to overcome the fogging of water vapor on the surface of transparent substrates and prevent the occurrence of fogging has become a research hotspot for researchers. Above the dew point of water vapor or the small dew...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/14C09D7/65C08F220/28C08F220/32C08F226/10
CPCC08F220/20C08L2205/03C08L2205/18C09D139/06C08L5/04C08L67/04C08K9/08C08K5/19C08F220/325C08F226/10
Inventor 季美
Owner 上海大杉新材料科技有限公司
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