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A kind of preparation method of water-based normal temperature self-crosslinking superhydrophilic anti-fog coating

An anti-fog coating and super-hydrophilic technology, applied in the direction of coating, can solve the problems of poor weather resistance, not resistant to washing, not resistant to wiping, etc., and achieve the effect of excellent comprehensive performance, good anti-fog durability and environmental friendliness

Active Publication Date: 2021-06-08
江西省龙海化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the deficiencies in the prior art, the object of the present invention is to provide a method for preparing a water-based normal temperature self-crosslinking super-hydrophilic anti-fog coating, which aims to solve the problems of poor anti-fog durability, The problems of not being resistant to water washing, poor weather resistance and not being resistant to wiping; the preparation of the anti-fog coating is simple and pollution-free, environmentally friendly and has excellent comprehensive performance. It is coated on glass, and the coating has good anti-fog durability and is washable. Pencil hardness can reach H-2H, water contact angle is 2-5°, light transmittance ≥ 90%, can be used in optical products

Method used

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  • A kind of preparation method of water-based normal temperature self-crosslinking superhydrophilic anti-fog coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 30 g of acrylic, 10 g of hydroxyethyl ethyl ester, 100 g acrylamide, 5G vinyl triethoxysilane and 1 g of azo diisobutyronitrile were added to the reactor containing 200 g of water-free ethanol, and the mixture was constructed after mixing. The reaction was stirred in a water bath at 70 ~ 80 ° C for 30 to 40 min, and 55 g of 55 g of a mass ratio of 4: 6 is prejected in advanced mohal methanol methyl methacrylate and an ethyl acrylate mixed solution, dripping The acceleration was controlled at 0.5 to 1 drop / s, and then the constant temperature was continued after 4 to 5 h after 2.5 h, after the reaction was completed, anhydrous ethanol was added to a polyacrylate solution having a mass concentration of 30%.

[0039] Take 30 g of tetraeth ester (TEOS) is dispersed in 51 g of anhydrous ethanol. After stirring is uniform, 12 g of deionized water and 3 g of glacial acetic acid are added, and stirred at room temperature for 40min, and then drop 6 gγ-shrinkage Glycerol ether oxyl...

Embodiment 2

[0043] 115 g of acrylic acid, 10 g of methacrylic acid, 15 g n-hydroxymethyl acrylamide, 5 gγ-methacryloyloxypropyltrimethoxysilane and 1 g of oxidative dibenzoyloylophytic acid were added to the loaded 200 g of isopropyl alcohol In the reactor, the mixture was stirred even after mixing, the reaction was stirred in a water bath of 70 to 80 ° C for 30 to 40 min, and the reaction to the system was added dropwise to 5: 5 in advance of 5: 5, methacrylic acid. The methyl ester and acrylate mixed solution were controlled at 0.5 to 1 drop / s. After the mixture was added, the reaction was continued for 4 to 5 hours, and after the reaction was completed, the addition of isopropyl alcohol was diluted with a mass concentration of 30% polyacrylic acid. Ester solution.

[0044] Take 20 g of tetraeth (TEOS) is dispersed in 72 g of isopropyl alcohol. After stirring is uniform, 7 g of deionized water and 1 g hydrochloric acid are added, and stirred at room temperature for 40min, and then add 1 g...

Embodiment 3

[0048] 80 g of acrylic acid, 35 g n, N-dimethylacrylamide, 10 g ethyl methacrylic acid, 15 g N-hydroxymethyl acrylamide, 5 gγ-methylproxylpropyl trimethoxysilane and 1 g of diioxide The formyl addition to the reaction vessel containing 200 g isopropyl alcohol, stirred even after mixing the system in a water bath of 70 to 80 ° C for 30 min, then adding 55g to the system to pre-mass ratio of 6: 4 The methyl methacrylate and acrylate mixed solution dispersed in isopropyl alcohols, and the drip speed is controlled at 0.5 to 1 drip / s. After the dropwise addition, the constant temperature is continued for 4 to 5 hours, and the reaction is completed, and isopropion The alcohol is diluted to a polyacrylate solution having a mass concentration of 20%.

[0049] Take 20 g of tetraethyl ester (TEOS) in 72 g of isopropyl alcohol, and then stirred and uniform, 7 g of deionized water and 1 g hydrochloric acid were added, and stirred at normal temperature for 40min, and then dropped with 3 gamm...

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Abstract

The invention discloses a preparation method of a water-based normal temperature self-crosslinking super-hydrophilic anti-fog coating. The problem of wiping; the specific steps of the super-hydrophilic anti-fog coating preparation method are to utilize respective raw materials and steps to prepare respectively hydrophilic polyacrylate, modified nano-silica sol and modified surfactant, and then The three are uniformly mixed with crosslinking agent and auxiliary agent, coated on the surface of the substrate, and dried naturally at room temperature to obtain a super-hydrophilic anti-fog coating. The preparation of the anti-fog coating is simple and pollution-free, environmentally friendly and has excellent comprehensive performance. It is coated on glass, the coating has good anti-fog durability, can be washed with water, the pencil hardness can reach H‑2H, and the water contact angle is 2 ‑5°, light transmittance ≥90%, can be used in optical products.

Description

Technical field [0001] The present invention relates to the field of chemical coatings, and more particularly to a method for preparing an aqueous normal temperature self-crosslinking super hydrated anti-fog coating. Background technique [0002] Coatings can be seen everywhere in people's daily life and industrial production, widely used in various fields, coating film formed by coatings, can act as decoration, protection, and marking of objects, although most of the coating on the market is simple, priced is cheap However, it is more convenient to function as a decorative use, while simple coatings are not satisfied in some special operating environments. At the same time, with the rapid development of science and technology, people's performance requirements for coatings (such as anti-moment, corrosion, rust, anti-thermal cycle, insulation, high temperature and cooling cycle, high moisture, resistant, etc.) The higher. [0003] Atomization refers to a phenomenon of water vapor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/26C09D133/02C09D7/62C09D7/63C03C17/00
Inventor 孔令涛董清龙董洋巴于磊
Owner 江西省龙海化工有限公司
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