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Preparation method of hydrophilic polymer anti-fog coating

A hydrophilic polymer and anti-fog coating technology, which is applied in the field of anti-fog coating preparation, can solve problems such as poor adhesion and poor anti-fog durability, and achieve good transparency, long-lasting use and stability, and good The effect of anti-fog effect

Inactive Publication Date: 2020-06-05
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method for preparing a hydrophilic polymer anti-fog coating to overcome the defects of poor anti-fog durability caused by poor adhesion between the coating and the substrate in the prior art

Method used

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  • Preparation method of hydrophilic polymer anti-fog coating
  • Preparation method of hydrophilic polymer anti-fog coating
  • Preparation method of hydrophilic polymer anti-fog coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) Pretreatment of substrate

[0057] Wash the glass substrate with three equal parts of deionized water, acetone and ethanol respectively, and dry it with nitrogen flow before use. Add 0.1 part of hydrogen peroxide aqueous solution to 20 parts of concentrated sulfuric acid, and the total weight of the solution is 100 g. After mixing evenly, put the base material into it, boil it with water for 0.1 min, take it out, wash it with deionized water, and blow it dry with nitrogen gas for later use.

[0058] (2) Silane coupling agent modified substrate surface

[0059] Dissolve the silane coupling agent in the mixed solvent A to configure a solution with a mass fraction of 0.1 wt%, place the pretreated substrate in the above silane solution, and immerse it at 25°C for 36 hours. Wherein the components in the mixed solvent A are 50 parts of absolute ethanol, 50 parts of deionized water and 0.1 part of acetic acid, and the total weight of the solution is 100 g.

[0060] (3) ...

Embodiment 2

[0064] (1) Pretreatment of substrate

[0065] Wash the glass substrate with three equal parts of deionized water, acetone and ethanol respectively, and dry it with nitrogen flow before use. Add 3 parts of hydrogen peroxide aqueous solution to 1 part of concentrated sulfuric acid, and the total weight of the solution is 100 g. After mixing evenly, put the substrate into it, boil it with water for 10 minutes, take it out, wash it with deionized water, and blow dry it with nitrogen gas for later use.

[0066] (2) Silane coupling agent modified substrate surface

[0067] Dissolve the silane coupling agent in the mixed solvent A to prepare a solution with a mass fraction of 0.5 wt%, place the pretreated substrate in the above silane solution, and immerse it at 27°C for 30 hours. The components in the mixed solvent A are: 45 parts of isopropanol, 45 parts of deionized water and 0.2 part of acetic acid, and the total weight of the solution is 100 g.

[0068] (3) Preparation of hyd...

Embodiment 3

[0073] (1) Pretreatment of substrate

[0074] Wash the glass substrate with three equal parts of deionized water, acetone and ethanol respectively, and dry it with nitrogen flow before use. Add 1 part of hydrogen peroxide aqueous solution to 10 parts of concentrated sulfuric acid, and the total weight of the solution is 100 g. After mixing evenly, put the substrate into it, boil it with water for 20 minutes, take it out, wash it with deionized water, and blow it dry with nitrogen gas for later use.

[0075] (2) Silane coupling agent modified substrate surface

[0076] Dissolve the silane coupling agent in the mixed solvent A, and configure a solution with a mass fraction of 1 wt%, place the pretreated substrate in the above silane solution, and immerse it at 28°C for 24 hours. The components in the mixed solvent A are: 40 parts of absolute ethanol, 40 parts of deionized water and 0.5 part of acetic acid, and the total weight of the solution is 100 g.

[0077] (3) Preparatio...

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Abstract

The invention relates to a preparation method of a hydrophilic polymer anti-fog coating. The method comprises the following steps: immersing an activated base material in a mixed solution of a silanecoupling agent and a catalyst, coating a obtained silane coupling agent modified base material with the mixed solution of a hydrophilic monomer and an initiator, and initiating free radical polymerization through ultraviolet light or heat. The coating obtained through the method has good transparency and anti-fog performance, and the light transmittance in the visible light wavelength range is about 100%.

Description

technical field [0001] The invention belongs to the field of preparation of anti-fog coatings, in particular to a preparation method of hydrophilic polymer anti-fog coatings. Background technique [0002] Transparent materials play an important role in daily life and industrial production, but often cause inconvenience and even economic loss due to fogging during use. Therefore, research on transparent anti-fog materials is of great significance. [0003] From the external principle, the fogging phenomenon is mainly due to the existence of temperature difference. When the temperature of the surface of the substrate is lower than the dew point of water vapor under a certain pressure, the water vapor is saturated and condensed, forming a large number of dispersed small water droplets on the surface of the substrate. Due to the different sizes and radii of curvature of the water droplets, when light passes through the small water droplets It is easy to produce refraction and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/12C08J7/18C08L67/02C08L69/00C08L75/04C08L33/12C08L23/06C08L23/12C03C17/32
CPCC03C17/32C08J7/12C08J7/123C08J7/18C08J2323/06C08J2323/12C08J2333/12C08J2367/02C08J2369/00C08J2375/04C08J2433/02C08J2433/14C08J2433/24
Inventor 何春菊刘子媛
Owner DONGHUA UNIV
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