High-ultraviolet barrier property EVA adhesive film for solar module packaging and preparing method of high-ultraviolet barrier property EVA adhesive film

A technology of solar modules and ultraviolet rays, applied in applications, adhesives, electrical components, etc., can solve the problems of acetic acid generation, corrosion electrodes, delamination, discoloration, etc., and achieve the effects of reduced viscosity, good strength and elasticity, and good anti-aging effects

Active Publication Date: 2015-03-25
MING CROWN ADVANCED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] EVA film will degrade during long-term use outdoors, causing aging phenomena such as discoloration, fading, delamination, generation of acetic acid and corrosion of electrodes, especially under ultraviolet radiation. Therefore, it is necessary to develop a high-efficiency UV blocking EVA film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An EVA adhesive film with high ultraviolet barrier property for solar module encapsulation, the surface of the EVA adhesive film is provided with a concave-convex grid structure, the thickness of the EVA adhesive film is 0.1mm, and the EVA adhesive film includes the following raw materials in parts by weight:

[0037] EVA resin 80 parts

[0038] 1 part of cross-linking agent

[0039] 1 part coupling agent

[0040] UV absorber 0.5 parts

[0041] Light stabilizer 0.5 parts

[0042] Antioxidant 0.5 parts.

[0043] The EVA resin has a melting point of 98°C and a density of 0.92g / cm 3 1. Ethylene-vinyl acetate copolymer with a vinyl acetate content of 10%.

[0044] The crosslinking agent is a mixture of a crosslinking curing agent and an auxiliary crosslinking agent in a weight ratio of 8:1; the crosslinking curing agent is composed of an organic peroxide and an azo compound in a weight ratio of 1:0.8 mixture.

[0045] The organic peroxide is composed of cumene peroxi...

Embodiment 2

[0055] An EVA adhesive film with high ultraviolet barrier properties for solar module packaging, the surface of the EVA adhesive film is provided with a concave-convex grid structure, the thickness of the EVA adhesive film is 0.3mm, and the EVA adhesive film includes the following raw materials in parts by weight:

[0056] EVA resin 90 parts

[0057] Cross-linking agent 2 parts

[0058] 2 parts of coupling agent

[0059] UV absorber 0.7 parts

[0060] Light stabilizer 0.7 parts

[0061] Antioxidant 0.7 part.

[0062] The EVA resin has a melting point of 98°C and a density of 0.93g / cm 3 1. Ethylene-vinyl acetate copolymer with a vinyl acetate content of 12%.

[0063] The crosslinking agent is a mixture of a crosslinking curing agent and an auxiliary crosslinking agent in a weight ratio of 8.5:1; the crosslinking curing agent is composed of an organic peroxide and an azo compound in a weight ratio of 1:0.9 mixture.

[0064] The organic peroxide is composed of cumene perox...

Embodiment 3

[0074] An EVA adhesive film with high ultraviolet barrier property for solar module encapsulation, the surface of the EVA adhesive film is provided with a concave-convex grid structure, the thickness of the EVA adhesive film is 0.5mm, and the EVA adhesive film includes the following raw materials in parts by weight:

[0075] EVA resin 100 parts

[0076] 3 parts of cross-linking agent

[0077] 3 parts of coupling agent

[0078] 1 part UV absorber

[0079] Light stabilizer 1 part

[0080] Antioxidant 1 part.

[0081] The EVA resin has a melting point of 99°C and a density of 0.95g / cm 3 1. Ethylene-vinyl acetate copolymer with a vinyl acetate content of 15%.

[0082] The crosslinking agent is a mixture of a crosslinking curing agent and an auxiliary crosslinking agent in a weight ratio of 9:1; the crosslinking curing agent is composed of an organic peroxide and an azo compound in a weight ratio of 1:1 mixture.

[0083] The organic peroxide is composed of cumene peroxide, 2...

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Abstract

The invention relates to the technical field of solar module packaging, in particular to a high-ultraviolet barrier property EVA adhesive film for solar module packaging and a preparing method of the high-ultraviolet barrier property EVA adhesive film. A concave-convex grid structure is arranged on the surface of the EVA adhesive film, the thickness of the EVA adhesive film ranges from 0.1 mm to 1 mm, and the EVA adhesive film comprises, by weight, 80-120 parts of EVA resin, 1-5 parts of cross-linking agent, 1-5 parts of coupling reagent, 0.5-1.5 parts of ultraviolet light absorber, 0.5-1.5 parts of light stabilizer and 0.5-1.5 parts of antioxygen. The ultraviolet light absorber and the light stabilizer are adopted in the EVA adhesive film, the high ultraviolet barrier property is achieved, and the ageing resistance performance of the EVA adhesive film can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of solar module packaging, in particular to an EVA adhesive film with high ultraviolet barrier properties for solar module packaging and a preparation method thereof. Background technique [0002] The EVA adhesive film for solar cell encapsulation is based on EVA resin, added with various modification additives, and melted and extruded by a screw extruder. It is a thermosetting adhesive film with the characteristics of anti-ultraviolet, anti-aging and yellowing, and high peel strength. . It is mainly used for the packaging of solar cell components, which can improve the light transmittance of the cell components, prevent water vapor penetration, high and low temperature resistance, and anti-ultraviolet aging, etc., to ensure the long-term stable and efficient use of the cell components. [0003] EVA film will degrade during long-term use outdoors, causing aging phenomena such as discoloration, fading, delam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/00C09J123/08C09J11/06H01L31/048B29D7/01
CPCY02E10/50
Inventor 李萍闫洪嘉
Owner MING CROWN ADVANCED MATERIAL CO LTD
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