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Novel ultraviolet-resistant EVA (Ethylene-Vinyl Acetate) glue film

A UV-resistant, adhesive film technology, used in adhesives, film/sheet adhesives, photovoltaic power generation, etc., can solve the problems of yellowing of the adhesive film and the reduction of photoelectric conversion efficiency, and achieve a small yellowing index and excellent adhesion. The effect of bonding strength and excellent UV aging resistance

Inactive Publication Date: 2012-06-20
CHANGSHU CANADIAN SOLAR ELECTRIC POWER TECHCO +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Modules using conventional packaging EVA film will produce C=C double bonds due to light and thermal degradation during outdoor use, which will cause the film to turn yellow. There are data to show that the yellowed film will greatly increase the photoelectric conversion efficiency of the component. Therefore, in the future EVA film market, it is necessary to seek materials with high-efficiency UV resistance and weather resistance. This material must improve the existing conventional EVA film

Method used

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  • Novel ultraviolet-resistant EVA (Ethylene-Vinyl Acetate) glue film

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Embodiment Construction

[0024] The technical solutions in the preferred embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0025] Such as figure 1 , 2 As shown, the present invention provides a novel UV-resistant EVA adhesive film, which is used for encapsulating solar cells and improving the performance of solar modules. The EVA film is set in the solar cell module, such as figure 1 As shown, the solar cell module includes glass 1, upper layer EVA film 2, cell sheet 3, lower layer EVA film 4 and TPT back plate 5 from top to bottom. In addition, the solar cell module also includes a junction box 6, The bus bar 8 welded between the battery pieces 3 and the frame 7 covering the periphery of the module.

[0026] The novel UV-resistant EVA adhesive film of the present invention comprises, the composition of following mass parts proportioning:

[0027] Ethylene-vinyl acetate 90-100 parts;

[002...

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Abstract

The invention discloses a novel EVA (Ethylene-Vinyl Acetate) glue film for a solar battery; the EVA glue film has excellent characteristics of ultraviolet adsorption and anti-ultraviolet aging; when the EVA glue film is applied to a solar component, a solar backplane is protected from being damaged by ultraviolet lights, and the service life of the backplane material of the component with the EVA glue film is greatly prolonged. The EVA in the EVA glue film mainly comprises the following components: 90-100 parts of ethylene-vinyl acetate, 0.05-5 parts of superoxide crosslinking agent, 5-10 parts of lipid antioxidant, 5-10 parts of hindered amine light stablizer and 0.005-5 parts of thickening agent. The EVA glue film has strong intense light energy to absorb ultraviolet by adding a novel ultraviolet light absorbing agent 2-(2'-hydroxy-3', 5'- di-tert-butyl phenol) and greatly prolongs the service life of packaging material.

Description

technical field [0001] The invention relates to a packaging material for solar cell components, in particular to a novel ultraviolet-resistant EVA adhesive film, which has excellent ultraviolet aging resistance. Background technique [0002] At present, the continuous use of conventional energy has brought about a series of economic and social problems such as energy shortage and environmental degradation. Generally speaking, conventional energy refers to energy that is relatively mature in technology and has been used on a large scale, while new energy usually refers Energy that has not yet been used on a large scale and is being actively researched and developed. Therefore, coal, oil, natural gas, and large and medium-sized hydropower are all regarded as conventional energy sources, and solar energy is a non-polluting green energy that is currently used on a large scale. It is the main trend in the development of solar cell components, and it is also the goal pursued by t...

Claims

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Application Information

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IPC IPC(8): C09J7/00C09J123/08C09J11/06H01L31/048
CPCY02E10/50
Inventor 刘国丽陈道远
Owner CHANGSHU CANADIAN SOLAR ELECTRIC POWER TECHCO
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