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Preparation method of antireflection coating liquid for double-layer coating

A coating solution and anti-reflection technology, applied in the field of coating solution, can solve the problems affecting the power generation of photovoltaic modules, etc., and achieve the effects of excellent dirt resistance and weather resistance, controllable particle size, and short reaction time

Active Publication Date: 2022-03-18
WUJIANG CSG GLASS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For example, Chinese patent 201610333647.5 provides a method for preparing a high-strength double-layer anti-reflection film. In this invention, a high-refractive titanium dioxide sol and a low-refractive silica sol are prepared respectively, and then a layer of high Refractive index titanium dioxide sol, after forming a titanium oxide film, then coat a layer of silicon dioxide film on its surface, although the double-layer SiO2 obtained by this method 2 -TiO 2 The anti-reflection film has a simple process and can increase the absorption of ultraviolet light, but it will inhibit the transmittance of infrared light, affect the power generation of photovoltaic modules, and cause counterproductive effects

Method used

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  • Preparation method of antireflection coating liquid for double-layer coating
  • Preparation method of antireflection coating liquid for double-layer coating
  • Preparation method of antireflection coating liquid for double-layer coating

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Effect test

Embodiment 1

[0044] A kind of broadband high anti-reflection double-layer coating anti-reflection coating solution for photovoltaic glass of the present invention, wherein the preparation method of the bottom coating solution is as follows:

[0045] 1) Preparation of silane polymer in bottom coating solution:

[0046] 1.1) Preparation of silane polymer: Add 30 parts of ethyl orthosilicate, 5 parts of methyltriethoxysilane, 60 parts of isopropanol, 13 parts of water, and 0.01 part of nitric acid into the reaction kettle while stirring, and start Heat up to 60°C, react for 4 hours, cool down after the reaction, and set aside.

[0047] 1.2) Preparation of bottom coating solution:

[0048] In terms of parts by mass, 25 parts of the above-mentioned silane polymer, 2 parts of propylene glycol methyl ether acetate, and 54 parts of isopropanol were added while stirring, and the materials were mixed evenly by stirring to obtain the bottom layer coating solution.

[0049] 2) The preparation method...

Embodiment 2

[0058] A kind of broadband high anti-reflection double-layer coating anti-reflection coating solution for photovoltaic glass of the present invention, wherein the preparation method of the bottom coating solution is as follows:

[0059] 1) Preparation of silane polymer for bottom coating solution:

[0060] 1.1) Preparation of silane polymer: Add 40 parts of tetraethyl orthosilicate, 76 parts of isopropanol, 16 parts of water, and 0.05 parts of hydrochloric acid into the reactor in turn while stirring, turn on the heating and raise the temperature to 50°C, react for 5 hours, and react When finished, cool down and set aside.

[0061] 1.2) Preparation of bottom coating solution:

[0062] According to mass percentage, 30 parts of the above-mentioned silane polymer, 62 parts of isopropanol and 4 parts of propylene glycol butyl ether were added while stirring, and the materials were mixed evenly, and discharged to obtain the bottom layer coating solution.

[0063] 2) The preparati...

Embodiment 3

[0093] After cleaning the photovoltaic glass, first coat a layer of bottom coating solution on the surface of the glass to form a bottom coating layer. layer of anti-reflection coating. Anti-reflection, dirt resistance and weather resistance tests were carried out on the coated glass, the results are shown in the table below:

[0094]

[0095] Remarks: Dirt resistance is divided into 1-5 grades according to the lightness and weight of the imprints left on the film surface. The higher the grade, the worse the dirt resistance, and ≦3 grades are qualified.

[0096] The test results in the above table show that the double-coated glass obtained by the anti-reflection solution prepared by the method of the present invention has higher light transmittance, excellent dirt resistance and weather resistance; and can significantly improve the light transmittance of long-wave band (infrared) rate, that is, to increase the absorption of ultraviolet and infrared light at the same time, ...

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Abstract

The preparation method comprises the following steps: 1) stirring a silane polymer and a solvent according to a ratio until the materials are uniformly mixed, so as to obtain a bottom-layer coating solution; the bottom layer coating liquid comprises 20-40 parts of a silane polymer and 50-80 parts of a solvent; 2) uniformly stirring and mixing silica sol, a solvent and nano microspheres to obtain a surface coating solution; the surface layer coating liquid is prepared from 20 to 30 parts of silica sol, 5 to 10 parts of nano microspheres and 45 to 75 parts of a solvent; the silica sol is prepared from a silicon source in the presence of an acid catalyst by adopting a sol-gel method, and the nano microspheres are prepared by adopting an emulsion polymerization method. According to the preparation method of the anti-reflection coating liquid, the mass ratio of the silica sol to the nano microspheres is controlled, so that the porosity of a film layer of photovoltaic coated glass prepared from the double-layer coating liquid is moderate, and it is guaranteed that the film layer has high anti-reflection and weather resistance.

Description

[0001] This application is a divisional application of an invention patent application with an application date of May 27, 2021, an application number of 2021105877984, and an invention title of "anti-reflection coating solution suitable for double-layer coating and its preparation method and application". technical field [0002] The invention relates to the technical field of coating solution, in particular to a preparation method of an anti-reflection coating solution suitable for double-layer coating. Background technique [0003] With the rapid development of the economy, the intensification of energy consumption and environmental problems, the development and use of green energy has become a hot spot. The development potential of solar energy is huge and the development prospect is broad, which has attracted much attention. [0004] The photoelectric effect of solar cells can convert light energy into electrical energy, so improving the conversion efficiency is the focu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D5/00C09D1/00C09D7/65C03C17/34
CPCC09D183/04C09D5/002C09D1/00C09D7/65C03C17/3405C03C2217/45C03C2217/47C03C2217/734C03C2218/11Y02P70/50
Inventor 刘迪何蒙柳生刘明刚陈志鸿何进
Owner WUJIANG CSG GLASS CO LTD
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