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Special coating for solar cell backboards, and preparation method thereof

A solar cell and backplane technology, applied in coatings, circuits, photovoltaic power generation, etc., can solve the problem of high cost of industrialization, and achieve the effects of extending service life, good adsorption performance, and improving anti-oxidation performance.

Inactive Publication Date: 2017-11-07
JURONG GCL SYST INTEGRATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the coating can effectively protect solar cells, the cost of industrialization is too high

Method used

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  • Special coating for solar cell backboards, and preparation method thereof

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Embodiment 1

[0020] A special coating for solar battery backplanes, comprising the following components in parts by weight: 10-22 parts of toluene diisocyanate, 22-30 parts of ethyl acetate, 12-22 parts of acetone, 1-7 parts of bisphenol, dimethyl 15-22 parts of acetamide, 22-44 parts of trimellitic anhydride, 2-40 parts of benzotriazole, 30-38 parts of anhydrous xylene, 1-5 parts of pyrophosphate, 12-28 parts of cyclohexanone, alkanes 1-8 parts of oxy fatty acid titanate coupling agent, 22-30 parts of butyl orthotitanate, 12-22 parts of zinc acetate, and 11-18 parts of ethylene glycol.

[0021] The molecular weight of the alkoxy fatty acid titanate coupling agent is 1000Da.

[0022] The pyrophosphate is zinc pyrophosphate.

[0023] The preparation method of the above-mentioned special coating for a solar battery back plate comprises the following steps: step 1, toluene diisocyanate, ethyl acetate, acetone, bisphenol, dimethylacetamide, trimellitic anhydride, benzotriazole, anhydrous Xyl...

Embodiment 2

[0028] A special coating for solar battery backplanes, comprising the following components in parts by weight: 20 parts of toluene diisocyanate, 28 parts of ethyl acetate, 20 parts of acetone, 5 parts of bisphenol, 20 parts of dimethylacetamide, and 40 parts of trimellitic anhydride 28 parts of benzotriazole, 55 parts of silane coupling agent, 35 parts of anhydrous xylene, 2 parts of pyrophosphate, 25 parts of cyclohexanone, 4 parts of alkoxy fatty acid titanate coupling agent, 28 parts of butyl titanate, 20 parts of zinc acetate, and 14 parts of ethylene glycol.

[0029] The molecular weight of the alkoxy fatty acid titanate coupling agent is 1800Da.

[0030] Pyrophosphate is a kind of calcium pyrophosphate.

[0031] The preparation method of the above-mentioned special coating for a solar battery back plate comprises the following steps: step 1, toluene diisocyanate, ethyl acetate, acetone, bisphenol, dimethylacetamide, trimellitic anhydride, benzotriazole, anhydrous Xylen...

Embodiment 3

[0036] A special coating for solar battery backplanes, comprising the following components in parts by weight: 10-22 parts of toluene diisocyanate, 22-30 parts of ethyl acetate, 12-22 parts of acetone, 1-7 parts of bisphenol, dimethyl 15-22 parts of acetamide, 22-44 parts of trimellitic anhydride, 2-40 parts of benzotriazole, 30-38 parts of anhydrous xylene, 1-5 parts of pyrophosphate, 12-28 parts of cyclohexanone, alkanes 1-8 parts of oxy fatty acid titanate coupling agent, 22-30 parts of butyl orthotitanate, 12-22 parts of zinc acetate, and 11-18 parts of ethylene glycol.

[0037] The molecular weight of the alkoxy fatty acid titanate coupling agent is 1000-2000Da.

[0038] Pyrophosphate is magnesium pyrophosphate.

[0039] The preparation method of the above-mentioned special coating for a solar battery back plate comprises the following steps: step 1, toluene diisocyanate, ethyl acetate, acetone, bisphenol, dimethylacetamide, trimellitic anhydride, benzotriazole, anhydrou...

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Abstract

The invention discloses a special coating for solar cell backboards, and a preparation method thereof, wherein the coating comprises toluene diisocyanate, ethyl acetate, acetone, bisphenol, dimethylacetamide, trimellitic anhydride, benzotriazole, anhydrous xylene, pyrophosphate, cyclohexanone, an alkoxy fatty acid titanate coupling agent, tetrabutyl titanate, zinc acetate, and ethylene glycol. The preparation method comprises: carrying out mixing heating on toluene diisocyanate, ethyl acetate, acetone, bisphenol, dimethylacetamide, trimellitic anhydride, benzotriazole, anhydrous xylene, cyclohexanone and tetrabutyl titanate to achieve a temperature of 450-550 DEG C to obtain a component A; carrying out mixing heating on pyrophosphate, zinc acetate and ethylene glycol to a temperature of 100-180 DEG C, adding an alkoxy fatty acid titanate coupling agent in a dropwise manner, and stirring to obtain a component B; and uniformly mixing the component A and the component B to obtain the product. According to the present invention, by using the synergetic effect of pyrophosphate and bisphenol, the anti-oxidation performance of the backboard is improved, the yellowing index [delta]b is 1.8-2.1, and the service life of the whole solar cell is prolonged.

Description

technical field [0001] The invention relates to the field of solar battery back plates, in particular to a special coating for solar battery back plates and a preparation method thereof. Background technique [0002] The solar backsheet is located on the back of the solar panel, which protects and supports the battery sheet, and has reliable insulation, water resistance, and aging resistance. It generally includes three layers, which are weather-resistant layer, structural reinforcement layer, and weather-resistant layer. The outer protective layer has good environmental erosion resistance. [0003] Chinese patent application No. 2012101442109 discloses a wear-resistant coated solar battery back sheet, which specifically discloses that the back sheet includes a bottom layer, two fluorine-containing resin layers and a polymer layer. Two fluorine-containing resin layers are located on the bottom layer and include fillers with reflectivity and epoxy resin. The polymer layer...

Claims

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Application Information

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IPC IPC(8): C09D7/12C09D5/00H01L31/049
CPCC08K3/32C08K5/13C09D5/00H01L31/049Y02E10/50
Inventor 卞祖慧庄益春贾敏陈宁
Owner JURONG GCL SYST INTEGRATION TECH CO LTD