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Adhesive for solar battery protective sheets

A technology for solar cells and adhesives, applied in adhesive types, ester copolymer adhesives, polyurea/polyurethane adhesives, etc., can solve problems such as unclear high-level weather resistance, and achieve excellent long-term weather resistance Effects of resistance and hydrolysis resistance, improved adhesion and weather resistance, and excellent adhesion after aging

Inactive Publication Date: 2016-02-24
HENKEL KGAA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Although the binders of Documents 1 to 3 include a triazine-based UV absorber and are excellent in weather resistance (see "Claims" of each document), it is not clear whether they are sufficient for organic solar cells high level of weather resistance

Method used

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  • Adhesive for solar battery protective sheets
  • Adhesive for solar battery protective sheets
  • Adhesive for solar battery protective sheets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0199]

[0200] As shown in Table 3, 90.0 g of polymer 1 (a1) [180 g of an ethyl acetate solution of polymer 1 (solid content: 50.0% by weight)], 4.1 g of isocyanate compound 1 (a2-1), 5.9 g of isocyanate compound 3 (a2-3), 1.0 g of hydroxyphenyltriazine 1 (b1), 0.2 g of hindered amine-based compound (b'4) and 0.2 g of hindered phenol-based compound (b'5 ), and then mixed to prepare a binder solution. Using the solution thus prepared as an adhesive for a solar cell protective sheet, the following tests were performed.

[0201]

[0202] First, the adhesive for solar cell protection sheet of Example 1 was applied to a transparent polyethylene terephthalate (PET) sheet (manufactured by Mitsubishi Polyester Film Corporation, trade name O300EW36), so that the solid component The weight becomes 10g / m 2 , and then dried at 80° C. for 5 minutes to obtain a PET sheet 1 coated with an adhesive. .

[0203] Then, a surface-treated transparent polyolefin film (linear low-density po...

Embodiment 2 to 13 and comparative example 1 to 6

[0226] In the same manner as in Example 1, adhesives for solar cell protection sheets of Examples 2 to 13 and Comparative Examples 1 to 6 were prepared according to the compositions shown in Tables 3 and 4, and then evaluated.

[0227] table 3

[0228]

[0229] Table 4

[0230]

[0231] As shown in Tables 1 to 4, since the adhesives for solar cell protection sheets of Examples 1 to 13 contain polyurethane resin obtainable by the reaction of acrylic polyol (a1) and isocyanate compound (a2), and the acrylic polyol Alcohol (a1) contains acrylonitrile and (meth)acrylate, so the obtained adhesive is excellent in initial adhesion to film, adhesive strength after aging (peel strength), and also in hydrolysis resistance and Excellent performance in terms of weather resistance, and has a satisfactory overall balance. Therefore, the adhesives of Examples are suitable for use as adhesives for solar cell protective sheets.

[0232] In particular, the adhesives for solar cell prot...

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Abstract

The present invention provides an adhesive for solar battery protective sheets, comprising a urethane resin obtainable by mixing an acrylic polyol with an isocyanate compound; and a hydroxyphenyltriazine based compound, wherein the acrylic polyol is obtainable by polymerizing polymerizable monomers, the polymerizable monomers comprise a monomer having a hydroxyl group and other monomers, and the other monomers comprise acrylonitrile and (meth)acrylic ester(s). The adhesive for solar battery protective sheets has satisfactory initial adhesion to a film, satisfactory adhesion property to a film after aging, and excellent weatherability and hydrolysis resistance over the long term. The present invention also provides a solar battery protective sheet which is obtainable by using the adhesive.

Description

[0001] Cross-References to Related Applications [0002] This application claims priority under Article 4 of the Paris Convention based on Japanese Patent Application No. 2013-104257 filed in Japan on May 16, 2013, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to adhesives for solar cell protection sheets. Furthermore, the present invention also relates to a solar cell protection sheet obtainable by using the adhesive, and a solar cell module obtainable by using the solar cell protection sheet. Background technique [0004] Progress has been made in the practical application of solar cells as a useful energy source. The solar cells include various types, and silicon-based solar cells, inorganic compound-based solar cells, organic solar cells, and the like are known typical solar cells. [0005] The surface (front) and back of the solar cell module are protected with sheets. Usually, the sheet prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/62C08G18/76C08G18/79C08G18/80C08G18/28C08G18/38C09J175/04H01L31/049
CPCC08G18/6262C08G18/7642C08G18/792C08G18/8025C08G18/2825C08G18/3851C09J175/04Y02E10/50H01L31/049H10K30/88C09J133/08C09J133/10C09J133/14H01L31/0481
Inventor 伊藤祥子山田泰史池田仁志
Owner HENKEL KGAA
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