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Complex aqueous solution for preparing self-repairing anti-fog frost prevention coating and application thereof

A compound and self-repairing technology, applied in the field of chemical coatings, can solve the problems of restricting anti-fog and anti-frost coatings, anti-fog film movement restrictions, and self-repairing performance reduction, achieving excellent stability, excellent repairing ability, and maintaining transparency sexual effect

Active Publication Date: 2017-09-08
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the movement of the internal polymer segments of the covalently crosslinked anti-fog film is limited, which will lead to a greatly reduced or even lost self-healing performance of the film.
Secondly, the way of heat treatment will inevitably limit the use of anti-fog and anti-frost coatings on some polymer substrates that are not resistant to high temperatures

Method used

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  • Complex aqueous solution for preparing self-repairing anti-fog frost prevention coating and application thereof
  • Complex aqueous solution for preparing self-repairing anti-fog frost prevention coating and application thereof
  • Complex aqueous solution for preparing self-repairing anti-fog frost prevention coating and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1 A composite aqueous solution for preparing a self-repairing anti-fog and anti-frost coating, the amount of each raw material calculated by mass fraction is as follows:

[0018] 1) poly-2-acrylamide-2-methylpropanesulfonic acid (water absorbing agent), 2%; 2) polyvinylimidazole (stabilizer), 2%, the mass fraction of water contained is 96%.

[0019] After mixing poly-2-acrylamide-2-methylpropanesulfonic acid and polyvinylimidazole in water, a uniform and transparent composite aqueous solution with a total mass fraction of 4% is obtained.

[0020] The spraying method can be used in 10*10cm 2 A 10 μm thick highly transparent composite coating is constructed on the glass surface. The inner diameter of the nozzle of the spray gun used was 500 μm, and 0.2 ml of the composite aqueous solution could be sprayed per second. After the coating is dried naturally, place the coated material in a refrigerator at minus 20°C for 2 hours, and then place it in an environment...

Embodiment 2

[0021] Embodiment 2 A composite aqueous solution for preparing a self-repairing anti-fog and anti-frost coating, the amount of each raw material calculated by mass fraction is as follows:

[0022] 1) hyaluronic acid (water-absorbing agent), 6%; 2) branched polyethyleneimine (stabilizer), 1%, and the mass fraction of water contained is 93%.

[0023] When hyaluronic acid and branched polyvinylimine are mixed in water, the viscosity of the solution increases, and finally a uniform and transparent composite solution is formed. Concentrate the complex aqueous solution at 65°C to finally obtain a complex solution with a total mass fraction of 12%. A highly transparent composite coating with a thickness of 20 μm was constructed on the surface of the left lens of the myopia lens by pulling and forming a film. The process of pulling and forming a film is realized by means of a pulling film coating machine. First, spectacle lenses were vertically dipped into the composite solution at ...

Embodiment 3

[0024] Embodiment 3 A composite aqueous solution for preparing a self-repairing anti-fog and anti-frost coating, the amount of each raw material calculated by mass fraction is as follows:

[0025] 1) sodium alginate (water absorbent), 12%; 2) polydiallyldimethylamine hydrochloride (stabilizer), 2%, 3) silicon dioxide (toughener), 1%, all The mass fraction of water is 85%.

[0026] When sodium alginate, polydiallyldimethylamine hydrochloride and silicon dioxide are mixed in water, the viscosity of the solution increases, and finally a uniform and transparent composite solution is formed. 15*15cm by scraping 2 The PET and glass surfaces are constructed with a 20 μm thick highly transparent polymer coating. It can be found that the anti-fog and anti-frost coating has good flexibility, and the PET substrate deposited with the composite coating was repeatedly bent 2000 times, and the coating was not broken or detached from the substrate. The material with the composite coating w...

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Abstract

The invention discloses a complex aqueous solution for preparing a self-repairing anti-fog frost prevention coating and application thereof and belongs to the technical field of chemical coatings. The complex aqueous solution is prepared from, by mass, 2-20% of water absorbent, 1-10% of stabilizer, 0-8% of flexibilizer and 0-10% of adhesive. After the four substances of the water absorbent, the stabilizer, the flexibilizer and the adhesive are dissolved in water and are fully mixed, and the complex aqueous solution for preparing the self-repairing anti-fog frost prevention coating is obtained. By the usage of modes of spraying, scraping coating or lifting to form a coating, coatings are formed in the surfaces of glass, spectacle glasses, polyethylene terephthalate and the like, and therefore the requirements for the anti-fog and frost prevention functions of different materials are met. There are multiple hydrogen bonds or an electrostatic crosslinking network inside the self-repairing anti-fog frost prevention coating, and therefore the self-repairing anti-fog frost prevention coating has excellent stability in water. Hydrogen bonds among all components or electrostatic interaction has certain dynamics, and the coating has an excellent repair capacity. The anti-fog frost prevention coating has a multiple damage repair capacity, and therefore self transparency and anti-fog and frost prevention properties are maintained.

Description

technical field [0001] The invention relates to the technical field of chemical coatings, in particular to an aqueous compound solution for preparing a self-repairing anti-fog and anti-frost coating and an application thereof. Background technique [0002] In daily life, changes in the temperature and humidity of the material's environment will cause water vapor to condense into frost or fog on its surface. For materials such as glasses, bathroom mirrors and car windshields, the formation of fog and frost will reduce the light transmission, which will affect the usability of the materials and even endanger the lives of users. The current solution is to construct a hydrophilic polymer coating on the surface of transparent materials. These coatings prevent fog and frost from forming by dispersing and absorbing water molecules. Polymer coatings are extremely vulnerable to mechanical damage such as scratches during use, which greatly reduces the transparency and anti-fog and a...

Claims

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Application Information

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IPC IPC(8): C09D133/24C09D139/04C09D105/08C09D105/04C09D133/02C09D179/02C09D7/12C09D5/02
CPCC08L2201/10C08L2205/03C09D5/024C09D105/04C09D105/08C09D133/02C09D133/24C09D139/04C08L39/04C08L33/24C08L79/02C08L39/00C08K3/36C08L29/14C08K3/346C08L5/08C08K3/26
Inventor 孙俊奇李懿轩李洋
Owner JILIN UNIV
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