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A kind of betaine zwitterionic polymer anti-fog coating and preparation method thereof

An anti-fog coating, zwitterion technology, applied in the coating and other directions, can solve the problems of inconvenience and harm to human life, light scattering, reducing light transmittance, etc.

Inactive Publication Date: 2018-12-18
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Fogging on the surfaces of glasses, lenses, optical instruments, and windshields will cause light scattering, reduce light transmittance, and cause inconvenience and harm to human life

Method used

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  • A kind of betaine zwitterionic polymer anti-fog coating and preparation method thereof
  • A kind of betaine zwitterionic polymer anti-fog coating and preparation method thereof
  • A kind of betaine zwitterionic polymer anti-fog coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) random copolymer p(BMA m -co-FMA n -co-AMA r ) preparation:

[0044] Dissolve 26.3g dimethyl propyl sulfonate aminoethyl methacrylate, 4.4g hexafluorobutyl methacrylate, 0.7g allyl methacrylate, 0.028g azodicyanovaleric acid in 47g trifluoro in ethanol. The above reactant was placed in a Schlenk tube and sealed, and after three freeze-thaw cycles, it was heated in an oil bath at 68°C for 10 h for free radical polymerization to obtain p(SBMA m -co-FMA n -co-AMA r ), wherein m:n:r=90:8:1, its structural formula is:

[0045]

[0046] (2) Preparation of betaine zwitterionic polymer anti-fog coating:

[0047] 5g of the prepared random copolymer, 0.25g of polyethylene dimethacrylate (the number of repeating units is 4) and 0.1g of photoinitiator IRGACURE 2959 were dissolved in 80mL of trifluoroethanol, and ultrasonic vibration made the solution transparent Take 0.3mL solution and spin-coat (rotating speed: 600rpm for 10s, then 3000rpm for 15s) on the surface of...

Embodiment 2

[0050] (1) random copolymer p(BMA m -co-FMA n -co-AMA r ) preparation:

[0051] Dissolve 24.6g dimethyl butylsulfonate aminoethyl methacrylate, 13.3g dodecafluoroheptyl methacrylate, 3.5g allyl methacrylate, 0.028g azobiscyanovaleric acid in 62g tris in fluoroethanol. The above reactant was placed in a Schlenk tube and sealed, and after three freeze-thaw cycles, it was heated in an oil bath at 65°C for 11 h for free radical polymerization to obtain p(SBMA m -co-FMA n -co-AMA r ), wherein m:n:r=80:15:5, its structural formula is:

[0052]

[0053] (2) Preparation of betaine zwitterionic polymer anti-fog coating:

[0054] Dissolve 40g of the prepared random copolymer and 1g of photoinitiator IRGACURE 184 in 75mL of ethanol, and ultrasonically shake the solution to make the solution transparent; take 0.2mL of the solution and spin coat (rotate at 600rpm for 10s, then 3000rpm for 15s) at 2.5cm× The surface of the 7.0cm glass substrate was surface-dry at room temperature...

Embodiment 3

[0057] (1) random copolymer p(BMA m -co-FMA n -co-AMA r ) preparation:

[0058] 20.4g 3-[2-(methacryloxy)ethyl] dimethyl ammonium propionate, 9.5g trifluorooctyl methacrylate, 3.5g allyl methacrylate, 0.028g azo Dicyanovaleric acid was dissolved in 50 g of trifluoroethanol. The above reactant was placed in a Schlenk tube and sealed, and after three freeze-thaw cycles, it was heated in an oil bath at 70°C for 10 h for free radical polymerization to obtain p(CBMA m -co-FMA n -co-AMA r ), wherein m:n:r=85:10:5, its structural formula is:

[0059]

[0060] (2) Preparation of betaine zwitterionic polymer anti-fog coating:

[0061] Dissolve 30g of the prepared random copolymer, 3g of ethylene glycol dimethacrylate and 0.75g of photoinitiator DAROCUR1173 in 84mL of methanol, and ultrasonically vibrate to make the solution transparent; take 0.4mL of the solution and spray it on a surface of 2.5cm×7.0cm The surface of the glass substrate was surface-dried at room temperature...

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Abstract

The invention discloses a betaine type zwitterionic polymer antifogging coating and a preparation method thereof. The coating is prepared from components as follows: 77%-100% of a random copolymer p (BMAm-co-FMAn-co-AMAr) and 0-23% of polyethylene glycol dimethacrylate; the coating is prepared from a betaine type zwitterionic polymer with a crosslinking point and polyethylene glycol dimethacrylate as a cross-linking agent through ultraviolet curing and film-forming, and is a random copolymer formed by betaine type acrylate monomers, fluorinated acrylate and allyl methacrylate through free radical polymerization. Hydrophilic betaine type zwitterionic components are subjected to hydration with water to realize the antifogging effect; with introduction of an appropriate quantity of hydrophobic components, water vapor can be effectively isolated, and interaction of a hydrophobic part and water is not influenced; the crosslinking point is provided by allyl methacrylate, so that stability of the coating is improved; the coating has good transparency and antifogging performance, and light transmittance of the coating in a visible light wavelength range reaches 80% or higher.

Description

technical field [0001] The invention relates to a betaine zwitterionic polymer anti-fog coating and a preparation method thereof. Background technique [0002] Fogging on the surfaces of glasses, lenses, optical instruments, and windshields can cause light scattering, reduce light transmittance, and cause inconvenience and harm to human life. There are two ways to solve this problem: anti-fog coating and anti-fog additives. Among them, anti-fog coating has attracted more attention of researchers because of its simple steps and wide application range. Initial studies have shown that hydrophilic and superhydrophilic materials are important components of anti-fog materials. In recent years, studies have found that superhydrophobic and amphiphilic materials can also be used for anti-fog coatings. According to the composition of anti-fog coatings, the current research on anti-fog coatings mainly focuses on three types of acrylic coatings, hydrogen-bonded layer-by-layer self-ass...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/38C08F222/22C08F220/22C08F220/40C09D133/16C09D135/02
CPCC08F220/38C08F220/387C08F222/22C08L2205/025C08L2312/06C09D133/16C09D135/02C08L35/02C08F220/22C08F220/40
Inventor 袁晓燕陶超李晓晖李川朱孔营赵蕴慧任丽霞
Owner TIANJIN UNIV
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