Non-crosslinked EVA (ethylene-vinyl-acetate) rubber film for packaging thin-film solar cells and manufacturing method thereof

A solar cell, non-crosslinking technology, used in film/sheet adhesives, circuits, adhesives, etc., can solve the difficult rolling process of cross-linked EVA film, harsh inventory and use conditions, affecting packaging efficiency and other problems, to achieve the effect of high packaging efficiency, high strength and high adhesion fastness

Active Publication Date: 2015-01-28
GUANGDONG ANDELI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cross-linked EVA film is difficult to apply the rolling process, which affects the packaging efficiency; the cost of PVB film is too high, and the inventory and use conditions are relatively harsh

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In the present embodiment, the manufacture method of non-cross-linked EVA adhesive film for thin-film solar cell encapsulation comprises the following steps successively:

[0027] (1) Weigh the raw materials according to the following weight ratio: ethylene-vinyl acetate copolymer 97.44%, maleic anhydride 1.5%, silane coupling agent 0.5% (both are N-phenyl-γ-aminopropyltrimethoxy silane), light stabilizer 0.2% (both poly{[6-[(1,1,3,3-tetramethylbutyl)amino]]-1,3,5-triazine-2,4-bis [(2,2,6,6,-tetramethyl-piperidinyl)imino]-1,6-hexadiene[(2,2,6,6-tetramethyl-4-piperidinyl) imino]}), dicumyl peroxide 0.06%, antioxidant 0.3% (both tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester);

[0028] The above-mentioned ethylene-vinyl acetate copolymer (EVA) is E093A of Samsung Total, whose vinyl acetate content is 9%, and its melt index is 3g / 10min (190°C, 2.16kg).

[0029] (2) Dissolve dicumyl peroxide and maleic anhydride in acetone, and the weight...

Embodiment 2

[0034] In the present embodiment, the manufacture method of non-cross-linked EVA adhesive film for thin-film solar cell encapsulation comprises the following steps successively:

[0035] (1) Weigh the raw materials according to the following weight ratio: ethylene-vinyl acetate copolymer 98.55%, maleic anhydride 1.0%, silane coupling agent 0.2% (all are γ-methacryloxypropyltrimethoxy silane), light stabilizer 0.1% (both poly{[6-[(1,1,3,3-tetramethylbutyl)amino]]-1,3,5-triazine-2,4-bis [(2,2,6,6,-tetramethyl-piperidinyl)imino]-1,6-hexadiene[(2,2,6,6-tetramethyl-4-piperidinyl) imino]}), dicumyl peroxide 0.05%, antioxidant 0.1% (both tris(2,4-di-tert-butylphenyl) phosphite);

[0036] The above-mentioned ethylene-vinyl acetate copolymer (EVA) adopts EV304 from Asia Polymer Co., Ltd., its vinyl acetate content is 14%, and its melt index is 3.5g / 10min (190°C, 2.16kg).

[0037] (2) Dissolve dicumyl peroxide and maleic anhydride in acetone, and the weight of acetone used is twice th...

Embodiment 3

[0042] In the present embodiment, the manufacture method of non-cross-linked EVA adhesive film for thin-film solar cell encapsulation comprises the following steps successively:

[0043] (1) Weigh the raw materials according to the following weight ratio: ethylene-vinyl acetate copolymer 98.044%, maleic anhydride 1.2%, silane coupling agent 0.32% (both are N-phenyl-γ-aminopropyltrimethoxy silane), light stabilizer 0.16% (both poly{[6-[(1,1,3,3-tetramethylbutyl)amino]]-1,3,5-triazine-2,4-bis [(2,2,6,6,-tetramethyl-piperidinyl)imino]-1,6-hexadiene[(2,2,6,6-tetramethyl-4-piperidinyl) imino]}), dicumyl peroxide 0.056%, antioxidant 0.22% (both tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester);

[0044] The above-mentioned ethylene-vinyl acetate copolymer (EVA) is E093A of Samsung Total, whose vinyl acetate content is 9%, and its melt index is 3g / 10min (190°C, 2.16kg).

[0045] (2) Dissolve dicumyl peroxide and maleic anhydride in acetone, and the w...

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Abstract

The invention discloses a non-crosslinked EVA (ethylene-vinyl-acetate) rubber film for packaging thin-film solar cells, which is characterized in that the rubber film is prepared from the following raw materials in percentage by weight: 97.44-98.55% of ethylene-vinyl acetate copolymers, 1.0-1.5% of maleic anhydride, 0.2-0.5% of a silane coupling agent, 0.1-0.2% of a light stabilizer, 0.05-0.06% of dicumyl peroxide, and 0.1-0.3% of an antioxidant; and the vinyl acetate content of the ethylene-vinyl acetate copolymers is 5-15%. The invention also provides a manufacturing method of the non-crosslinked EVA rubber film for packaging thin-film solar cells. The non-crosslinked EVA rubber film for packaging thin-film solar cells disclosed by the invention is high in melting point, high in strength, low in liquidity and strong in cohesive force, and kept in a thermoplastic state; the continuous packaging production of thin-film solar cell modules can be realized by using a rolling process, therefore, the non-crosslinked EVA rubber film is high in packaging efficiency and low in cost.

Description

technical field [0001] The invention relates to a solar cell encapsulation adhesive film, in particular to a non-crosslinked EVA adhesive film for thin-film solar cell encapsulation and a manufacturing method thereof. Background technique [0002] With the rapid development of solar cell technology, the demand for adhesive film as packaging material is also increasing. Crystalline silicon solar cells have high requirements on the light transmittance, aging resistance, and fluidity of the encapsulation film, and cross-linked EVA film is mainly used; PVB (polyethylene oxide) is also used in building integrated photovoltaic (BIPV) applications. Vinyl butyral resin) film for encapsulation. The above-mentioned cross-linked EVA film adopts high VA content EVA material with VA content (namely, vinyl acetate content) of 26~33%, cross-linked under the action of peroxide initiator, and is formed by calendering or tape casting. have to. [0003] The functional layer of thin-film sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/00C09J151/06C09J11/06C08F263/04C08F222/06H01L31/048B29C47/92B29C48/92
CPCY02E10/50
Inventor 王丹旭
Owner GUANGDONG ANDELI NEW MATERIALS CO LTD
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