EVA composite packaging adhesive film

A technology for encapsulating adhesive films and antioxidants, applied in adhesives, adhesive types, adhesive additives, etc., can solve the problems of aging resistance and yellowing resistance to be improved, and achieve improved oxidation resistance and yellowing resistance , Improve conversion power, improve the effect of power

Inactive Publication Date: 2019-12-03
CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aging resistance and yellowing resistance of the existing EVA composite film still need to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An EVA composite encapsulating adhesive film, the mass parts of which are composed as follows: 100 parts of maleic anhydride modified ethylene-vinyl acetate based copolymer, 10 parts of tackifier, 30 parts of reflective filler, 0.2 part of antioxidant, 0.2 part of rare earth fluorescent agent part, 0.1 part of crosslinking agent.

[0024] Among them, the rare earth fluorescent agent adopts europium-benzoic acid-phenanthroline.

[0025] Among them, the tackifier is a mixture of rosin resin and modified rosin resin, the mass ratio of which is 2:1.

[0026] Wherein, the reflective filler is an inorganic nano-metal particle, and the shape of the inorganic nano-metal particle is a shell.

[0027] Wherein, antioxidant selects 3-O-β-D-glucopyranosyl-4-methylergost-7-en-3-ol, 2,4-di-tert-butylphenol and dimethylformamide The mixture has a mass ratio of 1:1:0.2-0.8.

[0028] Wherein, DCP is selected as the cross-linking agent.

Embodiment 2

[0030] An EVA composite encapsulation adhesive film, its composition in parts by mass is as follows: 100 parts of maleic anhydride modified ethylene-vinyl acetate based copolymer, 12 parts of tackifier, 32 parts of reflective filler, 0.3 part of antioxidant, 0.5 part of rare earth fluorescent agent part, 0.2 part of crosslinking agent.

[0031] Among them, the rare earth fluorescent agent adopts europium-benzoic acid-phenanthroline.

[0032] Wherein, the tackifier is a mixture of rosin resin and modified rosin resin, the mass ratio of which is 2.1:1.

[0033] Wherein, the reflective filler is an inorganic nano-metal particle, and the shape of the inorganic nano-metal particle is a shell.

[0034] Wherein, antioxidant selects 3-O-β-D-glucopyranosyl-4-methylergost-7-en-3-ol, 2,4-di-tert-butylphenol and dimethylformamide The mixture has a mass ratio of 1.5:1:0.3.

[0035] Wherein, the cross-linking agent is selected from BPO.

Embodiment 3

[0037] An EVA composite encapsulating adhesive film, the mass parts of which are composed as follows: 100 parts of maleic anhydride modified ethylene-vinyl acetate based copolymer, 15 parts of tackifier, 35 parts of reflective filler, 0.3 part of antioxidant, 1 part of rare earth fluorescent agent part, 0.2 part of crosslinking agent.

[0038] Among them, the rare earth fluorescent agent adopts terbium-thiophenoyltrifluoroacetone-o-phenanthroline.

[0039] Wherein, the tackifier is a mixture of rosin resin and modified rosin resin, the mass ratio of which is 2.5:1.

[0040] Wherein, the reflective filler is an inorganic nano-metal particle, and the shape of the inorganic nano-metal particle is scale.

[0041] Wherein, antioxidant selects 3-O-β-D-glucopyranosyl-4-methylergost-7-en-3-ol, 2,4-di-tert-butylphenol and dimethylformamide The mixture has a mass ratio of 2:1:0.5.

[0042] Among them, DTBP is selected as the cross-linking agent.

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PUM

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Abstract

The invention relates to the technical field of photovoltaic cells, and especially relates to an EVA composite packaging adhesive film. The EVA composite packaging adhesive film is prepared from the following components, by mass, 100 parts of maleic anhydride modified ethylene-vinyl acetate copolymer, 10 to 20 parts of a tackifier, 30 to 40 parts of a reflective filler, 0.2 to 0.6 part of an antioxidant, 0.2 to 3 parts of a rare earth fluorescent agent and 0.1 to 0.4 part of a cross-linking agent, The reflective filler and the rare earth fluorescent agent are added, the reflective filler can increase the reflectivity of the packaging adhesive film on light and improve the conversion power of the photovoltaic module on light; and adding of the rare earth fluorescent agent at the same time is capable of converting ultraviolet light into red light, and the energy conversion efficiency of solar cells is increased by 12%. The antioxidant is a mixture of 3-O-beta-D-pyranoglucose -4-methyl ergosta-7-alkene-3-ol, 2, 4-di-tert-butylphenol and dimethylformamide, so that the oxidation resistance and yellowing resistance of the packaging adhesive film are remarkably improved, the service lifeof the packaging adhesive film is prolonged, and the power of photovoltaic modules is improved.

Description

technical field [0001] The invention relates to the technical field of photovoltaic cells, in particular to an EVA composite packaging adhesive film. Background technique [0002] Solar photovoltaic cells are easily affected by natural factors such as heat, light, oxygen, and moisture during use, resulting in a decrease in photoelectric conversion rate or even failure. As an important packaging material for solar photovoltaic cells, ethylene-vinyl acetate copolymer (EVA) film needs to have excellent packaging and aging resistance. The aging resistance and yellowing resistance of the existing EVA composite film still need to be improved. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an EVA composite encapsulating adhesive film with excellent aging resistance and yellowing resistance. [0004] In order to solve the problems of the technologies described above, the technical scheme adopte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/06C09J11/06C09J11/08C09J11/04
CPCC09J151/06C09J11/06C09J11/08C09J11/04C08K2201/011C08L2205/03C08L2205/025
Inventor 吕松
Owner CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
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