Environment-friendly water-based varnish for photovoltaic glass glaze and preparation method of environment-friendly water-based varnish

A photovoltaic glass, environmentally friendly technology, applied in the application field of water-based varnish in photovoltaic backplane glass glaze, can solve the problems of high VOCs content, human and environmental hazards, and large varnish odor, and reduce the surface energy, reduce heating time, and increase compatibility

Active Publication Date: 2021-10-19
WUJIANG CSG GLASS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing technical solutions, most of the varnishes used in photovoltaic glass glazes have a strong smell, are not environmentally friendly, and have problems such as poor adhesion to the glass substrate after thermal curing (180-220°C), and need to be cleaned with solvents. The comprehensive cost of use is high, and the content of volatile VOCs is high, which is extremely harmful to humans and the environment.

Method used

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  • Environment-friendly water-based varnish for photovoltaic glass glaze and preparation method of environment-friendly water-based varnish
  • Environment-friendly water-based varnish for photovoltaic glass glaze and preparation method of environment-friendly water-based varnish
  • Environment-friendly water-based varnish for photovoltaic glass glaze and preparation method of environment-friendly water-based varnish

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation of environment-friendly water-based varnish for photovoltaic glass glaze in the present embodiment comprises the following steps:

[0041] (1) Preparation of silicone-modified water-soluble acrylic resin:

[0042] (a) Keep the reactor clean and dry, add 40 parts by weight of alcohol ether solvent, feed nitrogen into the reactor and maintain it, feed cooling water into the condenser, and heat the alcohol ether solvent to 140°C.

[0043] (b) Take another dispersing kettle, add 10 parts of glycidyl tertiary carbonate, 5 parts of hydroxyethyl acrylate, 3 parts of methyl methacrylate, 5 parts of acrylic acid, 10 parts of isobornyl methacrylate in parts by weight , 25 parts of butyl acrylate, 15 parts of styrene, 5 parts of organosilicon monomer, 2 parts of molecular weight regulator (chain transfer agent), 3.5 parts of initiator; stir and mix evenly, the stirring speed is 300r / min, and the stirring time is 40min ; Add the above mixed solution dropwise to the...

Embodiment 2

[0050] The preparation of environment-friendly water-based varnish for photovoltaic glass glaze in the present embodiment comprises the following steps:

[0051] (1) Preparation of silicone-modified water-soluble acrylic resin:

[0052] (a) Keep the reactor clean and dry, add 40 parts by weight of alcohol ether solvent, feed nitrogen into the reactor and keep it, feed cooling water into the condenser, and heat the alcohol ether solvent to 150°C.

[0053] (b) Take another dispersion kettle, add 15 parts of glycidyl tertiary carbonate, 5 parts of hydroxyethyl acrylate, 5 parts of methyl methacrylate, 5 parts of acrylic acid, 5 parts of isobornyl methacrylate in parts by weight , 35 parts of butyl acrylate, 15 parts of styrene, 5 parts of silicone monomer, 1.5 parts of molecular weight regulator (chain transfer agent), 4 parts of initiator; stir and mix evenly, the stirring speed is 300r / min, and the stirring time is 30min ; Add the above mixed solution dropwise to the reaction ...

Embodiment 3

[0060] The preparation of environment-friendly water-based varnish for photovoltaic glass glaze in the present embodiment comprises the following steps:

[0061] (1) Polymerization preparation of silicone modified water-soluble acrylic resin:

[0062] (a) Keep the reactor clean and water-free, add 40 parts by weight of alcohol ether solvent, feed nitrogen into the reactor and maintain, feed cooling water into the condenser, and heat the alcohol ether solvent to 145°C.

[0063] (b) Take another dispersing kettle, add 12 parts of glycidyl tertiary carbonate, 10 parts of hydroxyethyl acrylate, 5 parts of methyl methacrylate, 3 parts of acrylic acid, 10 parts of isobornyl methacrylate in parts by weight , 30 parts of butyl acrylate, 10 parts of styrene, 8 parts of organosilicon monomer, 2 parts of molecular weight regulator (chain transfer agent), 5 parts of initiator; stir and mix evenly, the stirring speed is 300r / min, and the stirring time is 30min ; Add the above mixed soluti...

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Abstract

The invention relates to the technical field of photovoltaic glass, and discloses environment-friendly water-based varnish for photovoltaic glass glaze. The environment-friendly water-based varnish for the photovoltaic glass glaze consists of an alcohol ether solvent, a macromolecular resin, a rheological anti-settling agent and a dispersing agent, wherein the contained macromolecular resin is a special organic silicon monomer modified water-soluble acrylic resin. According to the invention, the environment-friendly water-based varnish for the photovoltaic glass glaze is extremely low in gas smell, green and environment-friendly, has good storage stability in a temperature range of 5-30 DEG C, and has good suspension property on glass powder and titanium dioxide; the prepared water-based glaze for photovoltaic backboard glass can be stored in a high-temperature or low-temperature environment for a long time; the silk-screen printing performance is good, plate blocking is avoided, and the silk-screen problems of sawteeth, burrs and the like are avoided; the surface of the glaze has excellent fullness after thermocuring (180-220 DEG C), the adhesion with photovoltaic glass is high, and organic matter components are easy to remove after high-temperature tempering (680-720 DEG C); and the environment-friendly water-based varnish has washability, so that the comprehensive cost for preparing the glass glaze layer of the photovoltaic backboard is reduced.

Description

technical field [0001] The invention relates to the technical field of photovoltaic modules, in particular to an environmentally friendly water-based varnish for photovoltaic glass glazes, a preparation method of the water-based varnish, and an application of the water-based varnish in glass glazes for photovoltaic backplanes. Background technique [0002] Double-glass photovoltaic modules are composed of front glass, back glass and solar cells. The cells are connected in series and parallel to the lead terminals to form a photovoltaic cell module. It is especially suitable for relatively harsh climate environments, such as high humidity. Photovoltaic power plants in high areas. In order to effectively improve the efficiency of double-glass modules, in addition to using white packaging materials such as EVA and POE, photovoltaic glass glazes can also be coated on the back glass. [0003] Photovoltaic glass glaze is composed of glass powder, titanium dioxide, varnish, etc. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/107C09D11/03C08F220/18C08F220/06C08F220/14C08F220/20C08F212/08C08F230/08C08F2/38C03C8/00C03C1/00
CPCC09D11/107C09D11/03C08F220/1804C08F2/38C03C8/00C03C1/00C08F220/1811C08F220/06C08F220/14C08F220/20C08F212/08C08F230/085C08F2500/26Y02E10/50
Inventor 乔仁静何蒙柳生刘明刚陈志鸿何进李付春刘迪
Owner WUJIANG CSG GLASS CO LTD
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