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A kind of anti-reflection coating and its preparation method and application

A technology of anti-reflection and anti-reflection glass, applied in the field of coatings, can solve the problems of increased manufacturing cost, limited life, easy failure, etc., and achieve the effects of high weather resistance, high cost performance and simple process

Active Publication Date: 2021-11-23
宁波甬安光科新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are three problems in this approach. First, low surface energy materials are usually fluorine-containing materials, which have potential risks to the human body and the environment; second, these low surface energy materials have limited life and are prone to failure; third, such One or more processes will be added, which will virtually increase the manufacturing cost

Method used

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  • A kind of anti-reflection coating and its preparation method and application
  • A kind of anti-reflection coating and its preparation method and application
  • A kind of anti-reflection coating and its preparation method and application

Examples

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Embodiment 1

[0045] This embodiment provides a weather-resistant closed-cell antireflection coating, which is mainly composed of a silicon source, a hyperbranched resin, an additive, a catalyst, and a solvent. The silicon source is an alkoxysilane, the catalyst is an acid, and the solvent is an alcohol. The proportioning relationship of each component is calculated in parts by weight: 3%-5% of silicon source, 1-10% of hyperbranched resin, and 85%-96% of auxiliary agent, catalyst and solvent. The anti-reflection coating is made by one of the following methods:

[0046] (1) Dissolve the hyperbranched resin in a solvent, add a silicon source and a catalyst to the solvent in which the hyperbranched resin is dissolved, and fully react for 0.5-20 hours to obtain a sol containing composite nanoparticles with a core-shell structure, and then add additives , to obtain the anti-reflection coating; or

[0047] (2) Mix the silicon source, catalyst and solvent for 0.5-24 hours to prepare silica colloi...

Embodiment 2

[0052] This embodiment provides a specific preparation method of a weather-resistant closed-cell anti-reflection coating. The preparation method includes the following steps:

[0053] Step 1: At room temperature, add the diluted 0.1M catalyst hydrochloric acid into the solvent ethanol for stirring, add tetraethoxysilane (TEOS) during the stirring process, and stir for 24 hours to obtain a network silica colloid;

[0054] Step 2: Take six parts of the same amount of colloidal silica prepared in step 1, and add 1%, 2% and 3% of the colloidal silica by weight in the process of stirring the six parts of colloidal silica , 4%, 5%, 10% acrylate oligomers, stirred and reacted for 12h, to obtain weather-resistant type closed-cell anti-reflection coating of the present invention;

[0055] Step 3: Add 0.1% of the leveling agent by weight of silica colloid to the six parts of weather-resistant closed-cell anti-reflection coatings prepared in step 2 to obtain six parts of weather-resistan...

Embodiment 3

[0057] This embodiment provides another specific preparation method for weather-resistant closed-cell anti-reflection coatings. This preparation method includes the following steps:

[0058] Step 1: At room temperature, add 2%, 2.5%, 3%, 3.5%, 4%, 6% hyperbranched resin acrylate oligomers into ethanol solvent and fully dissolve;

[0059] Step 2: Add tetraethoxysilane (TEOS) and 0.1M hydrochloric acid catalyst to the fully dissolved hyperbranched resin ethanol solution obtained in step 1, and react for 24 hours to obtain the weather-resistant closed-cell anti-reflection coating of the present invention;

[0060] Step 3: Add 0.1% leveling aid by weight of silica colloid to the weather-resistant closed-cell anti-reflection coating in step 2. The leveling aid is one of acrylic, silicone, and fluorine-containing additives or more, to obtain a weather-resistant closed-cell anti-reflection coating with excellent spreading properties.

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Abstract

The invention relates to a weather-resistant closed-cell anti-reflection coating, a preparation method and application thereof. The coating of the present invention contains composite nanoparticles with a core-shell structure formed by coating spherical hyperbranched resin particles with network structure silicon oxide. After the coating is thermally cured on the substrate, the composite nanoparticles are composed of hyperbranched resin The formed core will be burned away, leaving the hollow silica shell, namely the hollow nanoparticles and the pore structure (that is, the void) between the hollow nanoparticles, and the voids between the hollow nanoparticles on the coating surface are filled with silica. Closed cell structure, so as to achieve the effect of increasing the coating's transmittance while increasing the coating's weather resistance. The coating of the invention not only has an excellent anti-reflection function, but also has significant advantages such as simple process, high weather resistance and high cost performance.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to an anti-reflection coating and its preparation method and application. Background technique [0002] Anti-reflection coatings have always been very important in traditional optical industries such as optical lenses and laser devices. In recent years, photovoltaic equipment, high-end showcases, display equipment, automotive glass and other industries have also had a wide demand for anti-reflection coatings. Using the low refractive properties of anti-reflection coatings (the coating has a certain porosity and pore structure after forming a coating, It can directly reflect on the refractive performance) to reduce the reflectivity of the surface of these devices and improve the light transmittance. [0003] At present, more and more anti-reflection coating equipment are used in outdoor environments, such as photovoltaic glass, greenhouse glass, automotive glass, etc. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00B01J13/02C03C17/30C03C17/32B82Y40/00B82Y30/00
CPCB01J13/02B82Y30/00B82Y40/00C03C17/009C03C2217/445C03C2217/732C03C2218/32C09D1/00
Inventor 韩超胡文杰陶玉溪
Owner 宁波甬安光科新材料科技有限公司
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