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Water-based environment-friendly white glaze for high-reflection anti-PID photovoltaic backboard glass and preparation method of water-based environment-friendly white glaze

A photovoltaic backplane, high-reflection technology, applied in the coating and other directions, can solve the problems of yellowing, low reflectivity and blackening of the glaze layer, to ensure adhesion, high reflectivity and anti-PID performance, improve anti-PID performance effect

Active Publication Date: 2021-11-12
WUJIANG CSG GLASS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current water-based environmentally friendly white glazes produced by domestic manufacturers also have some problems, such as low reflectivity (≤78%); double-glass modules are resistant to PID (potential-induced degradation) tests, and the glaze layer turns yellow and black. Phenomenon, not suitable for photovoltaic backplane glass

Method used

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  • Water-based environment-friendly white glaze for high-reflection anti-PID photovoltaic backboard glass and preparation method of water-based environment-friendly white glaze
  • Water-based environment-friendly white glaze for high-reflection anti-PID photovoltaic backboard glass and preparation method of water-based environment-friendly white glaze
  • Water-based environment-friendly white glaze for high-reflection anti-PID photovoltaic backboard glass and preparation method of water-based environment-friendly white glaze

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The preparation of the water-based environmentally friendly white glaze for the high-reflection anti-PID photovoltaic backplane glass in this embodiment includes the following steps:

[0042] (1) Polymerization preparation of silicone modified water-soluble acrylic resin:

[0043] (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.

[0044] (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 4...

Embodiment 2

[0055] The preparation of the water-based environmentally friendly white glaze for the high-reflection anti-PID photovoltaic backplane glass in this embodiment includes the following steps:

[0056] (1) Polymerization preparation of silicone modified water-soluble acrylic resin:

[0057] (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.

[0058] (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 organosilicon monomer, 1.5 parts of molecular weight modifier (chain transfer agent), 4 parts of initiator; stir and mix evenly, the stirring speed is 300r / min, and the stirring time is 30min ...

Embodiment 3

[0069] The preparation of the water-based environmentally friendly white glaze for the high-reflection anti-PID photovoltaic backplane glass in this embodiment includes the following steps:

[0070] (1) Polymerization preparation of silicone modified water-soluble acrylic resin:

[0071] (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.

[0072] (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 i...

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Abstract

The invention discloses a water-based environment-friendly white glaze for high-reflection anti-PID photovoltaic backboard glass and a preparation method and application of the water-based environment-friendly white glaze. The water-based environment-friendly white glaze is composed of varnish, a dispersing agent, low-melting-point glass powder, titanium dioxide, a flatting agent and a defoaming agent, and the water-based environment-friendly white glaze has the high reflectivity (larger than or equal to 78%) on visible light and resists PID (potential-induced degration). The softening temperature of the low-melting-point glass powder is 450-550 DEG C, the total melting temperature of the low-melting-point glass powder is 520-560 DEG C, so that the water-based environment-friendly white glaze is completely molten within a short time within the tempering temperature range of 600-720 DEG C, the linear expansion coefficient of the low-melting-point glass powder is 80-85 * 10 <-7 > / K (30-300 DEG C) and is close to that of matrix glass, and the stress between the low-melting-point glass powder and the matrix glass is close in the cooling process; and the adhesive force of a glaze layer and the dimensional stability of glazed glass are ensured. The titanium dioxide is prepared through a chlorination method, the impurity content is extremely low, silicon oxide and aluminum oxide are used for coating treatment, lattice defects caused by titanium dioxide under the ultraviolet irradiation condition can be blocked, light activation points on the surface of titanium dioxide can be shielded, and the PID resistance is improved.

Description

technical field [0001] The invention relates to the technical field of photovoltaic modules and glass glazes, in particular to a water-based environmentally friendly white glaze for high-reflection and anti-PID photovoltaic backplane glass, a preparation method of the water-based environmentally friendly white glaze, and the application of the water-based environmentally friendly white glaze in photovoltaic module glass Applications. 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, white glazes can also be coated on the photovoltaic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/00C03C1/02C03C17/00C08F220/18C08F212/08C08F230/08C08F220/14C08F220/20
CPCC03C8/00C03C1/02C03C17/006C08F220/1804C03C2217/29C03C2217/732C03C2217/78C08F212/08C08F230/085C08F220/1811C08F220/14C08F220/20
Inventor 乔仁静何蒙柳生刘明刚陈志鸿何进李付春王瑞申
Owner WUJIANG CSG GLASS CO LTD
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