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Ultraviolet cut-off type EVA photovoltaic adhesive film, preparation method thereof and photovoltaic module

A cut-off, photovoltaic technology, applied in the direction of photovoltaic power generation, adhesives, electrical components, etc., can solve the problems affecting the service life of the backplane and photovoltaic modules, the power generation power of photovoltaic modules is reduced, and the backplane is easy to age and crack, so as to maintain visible light transmission. The effect of high pass rate, low cost, and excellent visible light transmittance

Active Publication Date: 2022-08-05
江苏中来新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical structure of vinyl acetate in the EVA resin of this EVA packaging film is polar, and its electrons can migrate under voltage conditions, so the photovoltaic module using this EVA photovoltaic film will have PID during the power generation process. effect, which in turn will lead to a significant drop in the power generation of photovoltaic modules
Moreover, as shown in the preparation method of an infrared shielding type EVA photovoltaic adhesive film provided by the publication number CN106634649A, it is difficult for the existing EVA photovoltaic adhesive film to effectively cut off ultraviolet light. Therefore, the obtained EVA photovoltaic adhesive film Photovoltaic modules are difficult to protect the backplane, which makes the backplane easy to age, crack and pulverize under UV radiation, which in turn affects the service life of the backplane and photovoltaic modules

Method used

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  • Ultraviolet cut-off type EVA photovoltaic adhesive film, preparation method thereof and photovoltaic module
  • Ultraviolet cut-off type EVA photovoltaic adhesive film, preparation method thereof and photovoltaic module
  • Ultraviolet cut-off type EVA photovoltaic adhesive film, preparation method thereof and photovoltaic module

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preparation example Construction

[0056] The preparation method of the above-mentioned ultraviolet cut-off type EVA photovoltaic film comprises the following preparation steps:

[0057] In step S1, the EVA resin, antioxidant, crosslinking agent, silane coupling agent, ultraviolet absorber, nano metal oxide and anti-PID functional material of the formula amount are uniformly mixed to obtain a mixture;

[0058] In step S2, the above-mentioned mixture is added to the extrusion equipment for melt extrusion, and after cooling through the casting equipment, the shaping process is carried out, and then thickness measurement, edge trimming, winding, packaging and storage are carried out to obtain the present invention. UV cut-off EVA photovoltaic film.

[0059] Wherein, in step S2, the temperature of melt extrusion is preferably 80-90° C. to ensure the adhesion effect of the EVA photovoltaic film after melt extrusion, and to avoid the aging of the mixture during melt extrusion.

[0060] A photovoltaic module of the p...

Embodiment 1

[0062] A UV cut-off type EVA photovoltaic film of the present embodiment includes:

[0063] EVA resin: namely ethylene-vinyl acetate copolymer, wherein, the molar content of vinyl acetate in the ethylene-vinyl acetate copolymer is 28%;

[0064] Antioxidant: The main antioxidant base is β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate octadecyl ester, and the auxiliary antioxidant is tris(4-nonylphenol) sulfite The complex of phosphate ester and tris(2,4-di-tert-butylphenyl) phosphite;

[0065] Cross-linking agent: The cross-linking curing agent is the compound of 2-ethylhexyl peroxide tert-butyl carbonate and 3,3-di(tert-butyl peroxy) ethyl butyrate, and the auxiliary cross-linking agent is triallyl Compounds of isocyanurate, triallyl cyanurate and trimethylolpropane trimethacrylate;

[0066] Silane coupling agent: vinyl tris (β-methoxyethoxy) silane;

[0067] Adamantane: i.e. tricyclic [3.3.1.1 3 ˙]Decane;

[0068] Fullerene: a hollow molecule composed of carbon, contain...

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Abstract

The invention belongs to the technical field of photovoltaic adhesive films, and provides an ultraviolet cut-off type EVA photovoltaic adhesive film, a preparation method of the ultraviolet cut-off type EVA photovoltaic adhesive film and a photovoltaic module. The anti-PID EVA material is prepared from the following raw materials in percentage by weight: 87 to 98 percent of EVA resin, 0.05 to 5 percent of antioxidant, 0.25 to 2 percent of cross-linking agent, 0.1 to 4 percent of silane coupling agent, 0.1 to 4 percent of ultraviolet absorbent, 0.05 to 4 percent of nano metal oxide and 0.1 to 8 percent of anti-PID functional material. Wherein the ultraviolet absorbent is p-dimethylamino cinnamon acyloxy propyl trimethoxy silane, and the ultraviolet absorbent is p-dimethylamino cinnamon acyloxy propyl trimethoxy silane. The EVA photovoltaic adhesive film has excellent ultraviolet cut-off and anti-PID effects and can maintain excellent visible light transmittance through synergistic cooperation of the raw materials, so that the EVA photovoltaic adhesive film can play a better role in protecting a photovoltaic module and a back plate after being applied to the photovoltaic module, and further can effectively prolong the service life of the photovoltaic module and improve the power generation power of the photovoltaic module.

Description

technical field [0001] The invention relates to the technical field of photovoltaic films, in particular to an ultraviolet cut-off type EVA photovoltaic film, a preparation method thereof, and a photovoltaic assembly. Background technique [0002] Photovoltaic film is one of the important materials in the solar technology industry, which plays an important role in bonding solar cells, front glass and back. As the photovoltaic film is a polymer material, it will inevitably be eroded by the natural environment and cause aging, so the photovoltaic film is one of the key materials affecting the service life and power generation of photovoltaic modules. The research and improvement of photovoltaic film is of great significance to the promotion of photovoltaic industry. [0003] Wherein, the traditional photovoltaic film is made of EVA (ethylene-vinyl acetate copolymer) polymer as the basic material, which is called EVA photovoltaic film, such as a kind of EVA encapsulation film ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/08C09J11/04C09J11/06H01L31/048
CPCC09J123/0853C09J11/04C09J11/06H01L31/0481C08K2003/2296C08K2201/011C09J2203/322C08K5/544C08K3/22C08K5/5425C08K5/01C08K3/045C08K13/02Y02E10/50
Inventor 林建伟张付特曾金栋李胜
Owner 江苏中来新材科技有限公司
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