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Anti-fog coating and preparation method thereof

A coating and anti-fog technology, applied in the coating and other directions, can solve the problems of poor light transmittance and wear resistance, poor anti-fog and anti-fog effect, complicated preparation process, etc., to achieve high wear resistance and light transmittance, Excellent water absorption and simple preparation process

Active Publication Date: 2020-07-17
SHENZHEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide an anti-fog and anti-fog coating and a preparation method thereof, aiming at solving the problems of poor anti-fog and anti-fog effects, poor light transmittance and wear resistance, And problems such as complex preparation process and high preparation cost

Method used

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  • Anti-fog coating and preparation method thereof
  • Anti-fog coating and preparation method thereof
  • Anti-fog coating and preparation method thereof

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preparation example Construction

[0023] Aiming at the problems that the existing anti-fog and anti-fog methods are difficult to meet the requirements of light transmittance when used on special medical lenses and polymer films, the preparation process is complicated and the preparation cost is high, the present invention provides an anti-fog and anti-fog coating A preparation method comprising the steps of:

[0024] S10, mixing the hydrophilic polymer, polyol and deionized water to prepare anti-fog glue;

[0025] S20, coating the anti-fog glue on the surface of the transparent substrate for air-drying treatment to form an anti-fog and anti-fog coating.

[0026] In this embodiment, the hydrophilic polymer, polyol and deionized water are firstly mixed to prepare a colorless and transparent anti-fog adhesive. Afterwards, the anti-fog glue is coated on the surface of the transparent substrate, and the excess moisture in the anti-fog glue is removed by air-drying, so that an anti-fog and anti-fog coating can be p...

Embodiment 1

[0035] (1) In parts by weight, 1 part of glycerin AR 99%, 6 parts of polyvinyl alcohol 205 type and 30 parts of deionized water are mixed in a reactor with a temperature of 75° C., and prepared after vacuum defoaming Get anti-fog glue;

[0036] (2) Clean the surface of the transparent substrate to ensure no dust and no moisture residue, introduce a proper amount of anti-fog adhesive after degassing, and use auxiliary tools such as brushes to apply the anti-fog adhesive on the surface of the transparent substrate. After coating, let it stand for 60 minutes, and use the fluid characteristics to evenly spread the anti-fog glue on the surface of the transparent substrate. Thereafter, drying with an infrared dryer, or drying with a blower dryer or a vacuum dryer can prepare a layer of anti-fog and anti-fog coating on the transparent substrate.

Embodiment 2

[0038] (1) In parts by weight, 2 parts of glycerin AR 99%, 6 parts of polyvinyl alcohol 205 type and 30 parts of deionized water are mixed in a reactor at 75° C., and prepared after vacuum defoaming Get anti-fog glue;

[0039] (2) Clean the surface of the transparent substrate to ensure that there is no dust and no moisture residue, introduce an appropriate amount of anti-fog adhesive after defoaming, and use auxiliary tools such as brushes to apply the anti-fog adhesive on the surface of the transparent substrate. After coating, After standing for 60 minutes, the anti-fog glue is evenly spread on the surface of the transparent substrate by using the fluid characteristics, and then dried by an infrared dryer to prepare a layer of anti-fog and anti-fog coating on the transparent substrate.

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Abstract

The invention discloses an anti-fog coating and a preparation method thereof. The preparation method comprises the steps that hydrophilic macromolecules, polyhydric alcohols and deionized water are mixed to prepare anti-fog glue, then the surface of a transparent base material is coated with the anti-fog glue, air drying treatment is conducted, and the anti-fog coating is formed. A hydrophilic polymer network and polyol in the anti-fog coating prepared in the invention can form a cross-linked network structure formed by mutual connection of hydrogen bonds, the prepared anti-fog coating has excellent water absorption performance, water storage performance and anti-fog performance, has excellent optical properties, high light transmittance and high wear resistance, is simple in preparation process, wide in raw material source and low in preparation cost, takes deionized water as a solvent, is safe and non-toxic, and is beneficial to environmental protection.

Description

technical field [0001] The invention relates to the field of preparation of anti-fog coatings, in particular to an anti-fog and anti-fog coating and a preparation method thereof. Background technique [0002] In life, people use some transparent materials, devices and equipment, such as agricultural shed film / agricultural film, food packaging film, polycarbonate (PC), helmet sun visor, face shield, commercial freezing window, car lights, Lenses etc. However, when the outside temperature changes, the surface of these transparent materials will often fog, frost, or even freeze, which will bring great troubles to people's work and life. For example, the medical isolation goggles used by doctors are very easy to fog during use, and the fog on the goggles will interfere with the doctor's line of sight, thereby seriously affecting the work. [0003] The existing anti-fog and anti-fog methods mainly include spraying anti-fog agents, coating hydrophilic or hydrophobic polymer coat...

Claims

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Application Information

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IPC IPC(8): C09D129/04C09D7/63C09D7/20
CPCC09D129/04C09D7/63C09D7/20C08K5/053
Inventor 周学昌黄俊俏滕龙陈繁沈家艳徐紫瑶祝丽菲周小虎甘田生
Owner SHENZHEN UNIV
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