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A kind of adhesive for photovoltaic backplane and photovoltaic backplane

A technology for photovoltaic backsheets and adhesives, applied in adhesives, photovoltaic power generation, adhesive additives, etc., can solve the problems of reducing the storage time of glue and increasing the difficulty of operation, and achieves improved hydrolysis resistance, excellent mechanical properties, and good The effect of hydrolysis resistance

Active Publication Date: 2018-02-23
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

However, in the actual operation of this patent, reducing the storage time of the glue solution will increase the difficulty of operation

Method used

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  • A kind of adhesive for photovoltaic backplane and photovoltaic backplane
  • A kind of adhesive for photovoltaic backplane and photovoltaic backplane
  • A kind of adhesive for photovoltaic backplane and photovoltaic backplane

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preparation example Construction

[0035] Adhesive preparation method:

[0036] Proportionally select the required materials for the above-mentioned component A, stir and mix evenly. Proportionally select the required materials for component B, stir and mix evenly. Mix component A and component B before use to obtain an adhesive.

[0037] Preparation method of photovoltaic backplane

[0038] The adhesive of the invention is suitable for interlayer crosslinking of various photovoltaic backplanes. Especially suitable for double-sided composite photovoltaic backplane. It is most suitable for composite photovoltaic backplanes with fluorine film layers on both sides.

[0039] Taking the composite photovoltaic backsheet with double-sided fluorine film layers as an example, the preparation method is as follows: apply adhesive on both sides of the PET substrate with a doctor blade, and compound the fluorine film to form a double-sided fluorine film backsheet. , and then combine the matured double-sided fluorophoto...

Embodiment 1

[0043] Adhesive: It is composed of A component and B component, of which A component has a molecular weight of 20000 and contains -CH 2 -(C 3 h 7 ) 2 C-CH 2 - 500 grams of polyurethane resin of the structural unit, 70 grams of bisphenol A epoxy resin, 30 grams of monomeric carbodiimide hydrolysis stabilizer, 50 grams of ethylene glycol, 50 grams of p-toluenesulfonic acid, γ-aminopropyl 30 grams of triethoxysilane, 30 grams of spherical molybdenum disulfide with a particle size of 100 nanometers, and 200 grams of methyl ethyl ketone are uniformly mixed.

[0044] Component B is composed of 5 grams of diphenylmethane diisocyanate and 20 grams of acetone uniformly mixed. Mix A and B components evenly. The number is F1.

[0045] Apply the above-prepared adhesive F1 on the surface side of the support (PET film) with a doctor blade, and the amount of glue applied is 7g / m 2 , dry, and then compound the fluorine film layer on the surface, and then apply adhesive F1 on the other ...

Embodiment 2

[0047] Adhesive: It is composed of component A and component B, of which component A has a molecular weight of 20000 and contains -CH 2 -(C 4 h 9 ) 2 C-CH 2 - 500 grams of polyurethane resin of the structural unit, 30 grams of bisphenol A epoxy resin, 40 grams of bisphenol S epoxy resin, 40 grams of monomeric carbodiimide hydrolysis stabilizer, 40 grams of ethylene glycol, p-toluene Prepared by uniformly mixing 60 grams of sulfonic acid, 30 grams of γ-aminopropyltriethoxysilane, 30 grams of spherical molybdenum disulfide with a particle size of 80 nanometers, and 200 grams of butanone. Component B is composed of 5 grams of diphenylmethane diisocyanate and 20 grams of butyl acetate uniformly mixed. Mix A and B components evenly. The number is F2.

[0048] Apply the above-prepared hydrolysis-resistant adhesive layer F2 on the surface side of the support (PET film) with a doctor blade, with an adhesive amount of 9g / m 2 , dry, and then compound the fluorine film layer on th...

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Abstract

The present invention provides an adhesive for a photovoltaic backplane and a photovoltaic backplane thereof. The adhesive is composed of component A and component B, and the composition in parts by mass is as follows: component A: 40-60 parts of polyurethane resin , 5-10 parts of epoxy resin, 1-10 parts of chain extender, 1-10 parts of catalyst, 1-5 parts of hydrolysis stabilizer, 1-5 parts of coupling agent, 1-5 parts of nano molybdenum disulfide, thinner 20‑30 parts; B component: 0.1‑1 part of crosslinking agent, 3 parts of diluent B‑3. The adhesive of the present invention has good hydrolysis resistance and can effectively improve the outdoor service life of the photovoltaic backplane.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic materials, and in particular relates to an adhesive for a photovoltaic backplane and a photovoltaic backplane prepared therefrom. technical background [0002] Photovoltaic backsheet is an important part of the solar power generation system, and its function is to protect the solar cells so that the solar cells can be used outdoors for a long time. With the development of the photovoltaic industry and the urgent need for domestic construction of power stations, the market has put forward higher requirements for the weather resistance of photovoltaic backsheets, especially for backsheets used in power stations in areas with harsh environments. Composite photovoltaic backsheets mostly adopt a "sandwich" structure and a three-layer film structure, which is bonded with an adhesive in the middle. The middle layer of the composite backsheet is generally a support PET, the inner layer is an adhesiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/04C09J163/02C09J11/04C09J7/30C09J7/24H01L31/049
CPCY02E10/50
Inventor 林浩杰张艳田勇杨辉张伊玮董丽荣顾丽争
Owner 乐凯胶片股份有限公司