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Anti-aging high-barrier solar cell backboard film and preparation method therefor

A technology for solar cells and backplane films, applied in chemical instruments and methods, circuits, photovoltaic power generation, etc., can solve the problems of low surface free energy of fluoroplastics, increased UV weather resistance, complex production process, etc., and achieve good UV resistance Aging performance, easy handling, and the effect of overcoming low surface energy

Active Publication Date: 2017-11-07
宁波欧达光电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the cost of traditional composite materials is high, the production process is complicated, and the surface free energy of fluoroplastics is very low, and the bonding performance with other materials is poor
On the other hand, adhesives are used for bonding between layers, and delamination is prone to occur after aging; the polyester adhesive layer and the insulating layer PET have good affinity, and the adhesion between the substrate and the substrate The adhesion is relatively firm, but the ultraviolet weather resistance of the ester adhesive layer itself becomes yellow and easy to hydrolyze, and the performance decays seriously after aging

Method used

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  • Anti-aging high-barrier solar cell backboard film and preparation method therefor

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Embodiment 1

[0031] A backsheet film for a solar cell, comprising a moisture barrier film and a fluorine-containing film arranged on the inside and outside of the moisture barrier film, the moisture barrier film and the fluorine-containing film can be naturally bonded without an adhesive; the The moisture barrier film is a biaxially oriented polyethylene terephthalate film with a thickness of 40 μm; the fluorine-containing film is prepared by radiation polymerization of the following raw materials in parts by weight: 20 parts of perfluoromethyl vinyl ether, 10 parts of vinyl siloxane modified nanometer zinc oxide, 10 parts of methacrylic acid, 15 parts of vinyl benzotriazole, 10 parts of acrylonitrile and 1 part of sodium dodecylbenzenesulfonate.

[0032] Wherein, the preparation method of the vinyl siloxane modified nano zinc oxide is: add 100g vinyl siloxane and 1g polymerization inhibitor to 2000g chloroform suspended with 400g zinc oxide nanoparticles, in N 2 Under atmosphere, reflux a...

Embodiment 2

[0042] A backsheet film for a solar cell, comprising a moisture barrier film and a fluorine-containing film arranged on the inside and outside of the moisture barrier film, the moisture barrier film and the fluorine-containing film can be naturally bonded without an adhesive; the The moisture barrier film is a biaxially oriented polyethylene terephthalate film with a thickness of 100 μm; the fluorine-containing film is prepared by radiation polymerization of the following raw materials in parts by weight: 25 parts perfluoroethyl vinyl ether, ethylene 12 parts of siloxane-modified nano zinc oxide, 12 parts of methacrylic acid, 17 parts of vinyl benzotriazole, 12 parts of acrylonitrile and 1 part of polyoxypropylene polyvinyl glyceryl ether.

[0043] Wherein, the preparation method of the vinyl siloxane modified nano zinc oxide is: 100g vinyl siloxane and 2g polymerization inhibitor methylene blue are added to 3000g chloroform suspended with 500g zinc oxide nanoparticles, under H...

Embodiment 3

[0053] A backsheet film for a solar cell, comprising a moisture barrier film and a fluorine-containing film arranged on the inside and outside of the moisture barrier film, the moisture barrier film and the fluorine-containing film can be naturally bonded without an adhesive; the The moisture barrier film is a biaxially oriented polyethylene terephthalate film with a thickness of 60 μm; the fluorine-containing film is prepared by radiation polymerization of the following raw materials in parts by weight: 27 parts of perfluoromethyl vinyl ether, ethylene 13 parts of siloxane-modified nano zinc oxide, 12 parts of methacrylic acid, 18 parts of vinyl benzotriazole, 13 parts of acrylonitrile and 1.5 parts of nonylphenol polyoxyethylene ether.

[0054] Wherein, the preparation method of the vinylsiloxane-modified nano-zinc oxide is: mix 100g vinylsiloxane and 2g polymerization inhibitor 2,2,6,6-tetramethylpiperidine nitroxide free radical TMP(h ) was added to 3400 g of chloroform in...

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Abstract

The invention discloses an anti-aging high-barrier solar cell backboard film and a preparation method therefor. The backboard film comprises a moisture-proof film and fluorine-containing films, wherein the fluorine-containing films are disposed at inner and outer sides of the moisture-proof film. There is no adhesive between the moisture-proof film and the fluorine-containing films, and the moisture-proof film and the fluorine-containing films can be directly overlapped and bonded through corona treatment. The moisture-proof film is made of bidirectional stretching polyethylene glycol terephthalate. The fluorine-containing films are prepared through the radiation polymerization of the following raw materials by weight: 20-30 parts of perfluoroalkyl vinyl ether, 10-15 parts of nano-zinc oxide modified by vinyl siloxane, 10-15 parts of methacrylic acid, 15-20 parts of vinyl benzotriazole, 10-15 parts of vinyl cyanide, and 1-2 parts of emulsifier. In a preparation process of the film, there is no solvent and initiator, so the backboard film is more environment-friendly. Moreover, the preparation process is simple, and the cost is low. The prepared backboard film is excellent in anti-aging performances and blocking performances.

Description

technical field [0001] The invention belongs to the technical field of solar cell manufacturing in the solar photovoltaic industry, and relates to a back sheet film and a preparation method thereof, in particular to an anti-aging high-barrier solar cell back sheet film and a preparation method thereof. Background technique [0002] Solar cell backsheet film is one of the packaging materials for solar cell modules. Its main performance is to encapsulate crystalline silicon. In addition to having excellent electrical insulation properties, anti-oxidation, anti-humidity and long-term prevention of hydrolysis of adhesives, it also needs to have High barrier performance. The barrier performance of the back film includes not only the barrier of water vapor, but also the barrier of gas. Once air and water vapor enter the interior of the solar cell module, it will corrode the corresponding component very quickly, causing damage to the solar cell panel. Therefore, the performance of...

Claims

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Application Information

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IPC IPC(8): H01L31/049H01L31/18B32B27/08B32B27/36B32B27/30C08F292/00C08F216/14C08F220/06C08F226/06C08F212/32C08F220/44C08J7/12C08F2/46C08F2/24C08L67/02
CPCB32B27/08B32B27/30B32B27/36B32B37/10C08F2/24C08F2/46C08F292/00C08J5/18C08J7/08C08J7/123C08J2367/02H01L31/049H01L31/18C08F216/1408C08F220/06C08F226/06C08F212/32C08F220/44Y02E10/50
Inventor 魏亮
Owner 宁波欧达光电有限公司