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Environment-friendly solar cell back film

A kind of solar cell, environment-friendly technology, applied in the direction of circuits, photovoltaic power generation, electrical components, etc., can solve the problems of short storage time of fluororesin solution, poor compactness of fluoropolymer layer, easy powderization, etc., to reduce pollution and personal injury damage, low performance requirements, and stable system effects

Active Publication Date: 2015-01-14
乐凯胶片股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the use of solvent-based fluororesin, there are disadvantages such as short storage time of fluororesin solution and environmental pollution; the fluoropolymer layer of the back plate has poor compactness and is easy to powder.

Method used

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  • Environment-friendly solar cell back film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]Polyvinylidene fluoride (manufactured by Aldrich) 15 parts,

[0043] 5 parts of amino-modified polyvinylidene fluoride-tetrafluoroethylene-hexafluoropropylene resin,

[0044] (Manufactured by China Lucky Film Group Corporation Lucky Film Co., Ltd.)

[0045] 7.5 parts of hydroxyl-modified polyvinylidene fluoride-tetrafluoroethylene-hexafluoropropylene resin,

[0046] (Manufactured by China Lucky Film Group Corporation Lucky Film Co., Ltd.)

[0047] PTFE powder (manufactured by Solvay solexis) 1.5 parts,

[0048] 40 parts of water,

[0049] 1 part of N-methylpyrrolidone (manufactured by Nanjing Ruize Fine Chemical Co., Ltd.),

[0050] Add 40 parts of water into a container equipped with a stirring device, add 1 part of co-solvent N-methylpyrrolidone into the water and stir evenly, then add 15 parts of polyvinylidene fluoride, 5 parts of polyvinylidene fluoride modified by amino Ethylene-tetrafluoroethylene-hexafluoropropylene resin, 7.5 parts of hydroxyl-modified poly...

Embodiment 2

[0053] 35 parts of polyvinylidene fluoride-tetrafluoroethylene-hexafluoropropylene,

[0054] (Manufactured by China Lucky Film Group Corporation Lucky Film Co., Ltd.)

[0055] Carboxy-modified polyvinylidene fluoride-tetrafluoroethylene-hexafluoropropylene resin 10 parts,

[0056] (Manufactured by China Lucky Film Group Corporation Lucky Film Co., Ltd.)

[0057] 8 parts of hydroxyl modified polyvinylidene fluoride-tetrafluoroethylene-hexafluoropropylene resin,

[0058] (Manufactured by China Lucky Film Group Corporation Lucky Film Co., Ltd.)

[0059] Acrylate polymer particles (manufactured by Solvay solexis) 2.5 parts,

[0060] 70 parts of water,

[0061] Dipropylene glycol methyl ether (manufactured by LyondellBasell) 5 parts,

[0062] Add 70 parts of deionized water into a container equipped with a stirring device, add 5 parts of co-solvent dipropylene glycol methyl ether into the water and stir evenly, then add 35 parts of polyvinylidene fluoride-tetrafluoroethylene-h...

Embodiment 3

[0065] Polyvinylidene fluoride-hexafluoropropylene (3M Dyneon) 30 parts,

[0066] 8 parts of aziridine-based modified polyvinylidene fluoride-tetrafluoroethylene-hexafluoropropylene resin,

[0067] (Manufactured by China Lucky Film Group Corporation Lucky Film Co., Ltd.)

[0068] 12 parts of hydroxyl modified polyvinylidene fluoride-tetrafluoroethylene-hexafluoropropylene resin,

[0069] (Manufactured by China Lucky Film Group Corporation Lucky Film Co., Ltd.)

[0070] Polyamide pellets (made by Solvay solexis) 3 parts,

[0071] 40 parts of water,

[0072] Propylene glycol butyl ether (manufactured by Dow Chemical) 4 parts,

[0073] Add 40 parts of water into a container equipped with a stirring device, add 4 parts of co-solvent propylene glycol butyl ether into the water and stir evenly, then add 30 parts of polyvinylidene fluoride-hexafluoropropylene, 8 parts of aziridine The permanent polyvinylidene fluoride-tetrafluoroethylene-hexafluoropropylene resin, 12 parts of hy...

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Abstract

An environment-friendly solar cell back film comprises a substrate, a fluorine-containing polymer layer and an adhesive layer, wherein the fluorine-containing polymer layer is obtained by coating waterborne fluororesin coating solution on the surface of the substrate by means of curing, and the waterborne fluororesin coating solution comprises, by weight, 15-35 parts of fluororesin, 5-10 parts of modified resin A, 6-12 parts of modified resin B, 0.5-3 parts of polymer filler, 40-70 parts of water and 1-5 parts of cosolvents, wherein the weight ratio of the modified resin A to the modified resin B is 1:0.8-1:1.5. The environment-friendly solar cell back film is environment-friendly, low in production cost, excellent in performance, high in peeling strength and good in water resistance and weather resistance.

Description

technical field [0001] The invention relates to the technical field of photovoltaic cells, in particular to a solar cell back film containing a water-based fluororesin coating. Background technique [0002] As a green alternative to traditional methods of electricity production, photovoltaic cell modules are used to generate electricity from the sun. Photovoltaic modules are assembled from various semiconductor element systems and must be protected to reduce the impact and damage of environmental effects such as moisture, oxygen and ultraviolet rays. Photovoltaic cell modules usually adopt a structure in which glass or plastic film protective layers are laminated on both sides of the silicon wafer. Due to its excellent strength, weather resistance, UV resistance and moisture resistance, it is made of fluoropolymer film and polyester (PET) film laminated backsheets play an important role in photovoltaic cell modules. [0003] The Chinese patent with application number 20071...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/16C09D127/18C09D127/20C09D127/22C09D7/12H01L31/048H01L31/049B32B27/06B32B27/30
CPCY02E10/50
Inventor 张学建杜彦飞李华锋李兴明董丽荣何彦达
Owner 乐凯胶片股份有限公司
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