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Composite solar cell back membrane

A solar cell and composite technology, applied in the direction of adhesive type, circuit, photovoltaic power generation, etc., can solve the problems of shrinking edge, poor flame retardant effect of back film, affecting the service life of solar cell modules, etc., to improve flame retardant performance , Guarantee the effect of service life

Active Publication Date: 2014-08-27
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

Known composite solar cell back films generally use adhesive composite fluorine film or polyolefin film as weather-resistant layer or adhesive layer, but these known composite solar cell back films cause fluorine due to the degradation of the adhesive after long-term humidity and heat aging. The film or polyolefin film has edge shrinkage on the surface of the substrate, and the flame retardant effect of the back film is poor, which affects the service life of the solar cell module

Method used

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  • Composite solar cell back membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Adhesive Liofol LA 2692 (manufactured by Henkel) 100 parts

[0034] Isocyanate Liofol LA 7395 (manufactured by Henkel) 15 parts

[0035] Dihydroxy cage silsesquioxane (manufactured by sigma-aldrich) 20 parts

[0036] Methyl isobutyl ketone 95 parts

[0037] 250 parts of ethyl acetate;

[0038]Add 100 parts of Liofol LA 2692, 20 parts of dihydroxycage silsesquioxane, 95 parts of methyl butanone and 250 parts of ethyl acetate into a container equipped with a stirring device and stir evenly for 30 minutes, then add 15 parts of Liofol LA After 7395 was stirred for 20 minutes, it was filtered and packaged. An adhesive coating liquid was prepared.

[0039] On one side of the cleaned and corona-treated substrate PET film, the prepared adhesive coating solution is coated by the slit coating method, and dried at 110°C for 2 minutes to obtain an 8 μm adhesive layer compounded with a 25 μm ETFE fluorine film; The other side of the PET was coated with a 10 μm dry adhesive laye...

Embodiment 2

[0041] Adhesive CA-022 (manufactured by DIC in Japan) 200 parts;

[0042] 15 parts of isocyanate TSH900 (manufactured by DIC Corporation of Japan);

[0043] Monohydroxy cage silsesquioxane (manufactured by sigma-aldrich company) 35 parts;

[0044] Butanone 120 parts;

[0045] 130 parts of ethyl acetate;

[0046] Add 200 parts of CA-022, 35 parts of monohydroxy cage silsesquioxane, 120 parts of butanone and 130 parts of ethyl acetate into a container equipped with a stirring device and stir evenly for 30 minutes, then add 15 parts of isocyanate TSH900 and stir for 20 minutes After 10 minutes, filter and package. An adhesive coating liquid was prepared.

[0047] On one side of the cleaned and corona-treated substrate PET film, apply the prepared adhesive coating solution by the slit coating method, and dry it at 90°C for 1 minute to obtain a 5 μm adhesive layer compounded with a 25 μm PVF fluorine film; The other side of the PET was coated with a 15 μm dry adhesive layer an...

Embodiment 3

[0049] Adhesive CA-017 (manufactured by DIC in Japan) 150 parts;

[0050] 10 parts of isocyanate TSH116 (manufactured by DIC Corporation of Japan);

[0051] Cage silsesquioxane AL0136 (manufactured by American Hybrid Company) 8 parts;

[0052] 200 parts of ethyl acetate;

[0053] 50 parts of methyl isobutyl ketone;

[0054] 30 parts of butyl acetate;

[0055] Add 150 parts of CA-017, 8 parts of AL0136 cage silsesquioxane, 200 parts of ethyl acetate, 30 parts of butyl acetate, and 50 parts of methyl isobutyl ketone into a container equipped with a stirring device and stir evenly for 30 minutes. Then add 10 parts of isocyanate TSH116 and stir for 20 minutes, then filter and package. An adhesive coating liquid was prepared.

[0056] On one side of the cleaned and corona-treated substrate PET film, apply the prepared adhesive coating solution by the slit coating method, and dry it at 110°C for 2 minutes to obtain a 15 μm adhesive layer compounded with a 25 μm PVF fluorine fil...

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Abstract

A composite solar cell back membrane comprises a weather-proof layer, adhesive layers, basic materials and a bonding layer. The adhesive layers are formed by coating compositions on the surfaces of the basic materials through solidification, wherein the compositions comprise the following components, by weight, 100-200 parts of adhesives, 8-18 parts of curing agents, 8-35 parts of polyhedral oligomeric silsesquioxane and 200-390 parts of solvents, the polyhedral oligomeric silsesquioxane (POSS) is the POSS containing hydroxyl or the POSS containing isocyanate groups, and the thickness of the adhesive layers ranges from 5 microns to 15 microns. The composite solar cell back membrane has good humidity and heat resistance and flame resistance no edge shrinking phenomenon exists, and the service life of solar cell modules is guaranteed.

Description

technical field [0001] The invention relates to the field of new energy, in particular to a composite solar battery back film. 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 cell modules are usually assembled from various semiconductor component systems and must be protected to reduce the influence 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. The solar cell back film plays an important protective role in photovoltaic cell modules due to its excellent strength, weather resistance, UV resistance and moisture resistance. Known composite solar cell back film generally uses adhesive composite fluorine film or polyolefin film as weather-resistant layer o...

Claims

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Application Information

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IPC IPC(8): H01L31/049C09J7/02C09J175/06C09J11/06
CPCY02E10/50C09J7/255C09J175/06
Inventor 张学建柳青张伊玮胡亚召
Owner 乐凯胶片股份有限公司
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