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Anti-aging packaging adhesive for solar photovoltaic panel

A solar photovoltaic panel and anti-aging technology, which is applied in photovoltaic power generation, circuits, adhesives, etc., can solve problems that affect the life of photovoltaic panel components, affect power generation efficiency, and reduce bonding strength, so as to ensure power generation efficiency and improve anti-aging performance , Improve the effect of bond strength

Inactive Publication Date: 2015-11-04
CETC NINGBO MARINE ELECTRONICS RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, EVA resin is mainly used as the encapsulating hot melt adhesive, but EVA is prone to aging and yellowing when exposed to the air, which will affect the light transmittance, thereby affecting the power generation efficiency, and, when exposed to the air for a long time, EVA The bonding strength with tempered glass and cells will also be greatly reduced, thus affecting the life of photovoltaic panel components

Method used

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  • Anti-aging packaging adhesive for solar photovoltaic panel
  • Anti-aging packaging adhesive for solar photovoltaic panel
  • Anti-aging packaging adhesive for solar photovoltaic panel

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Embodiment Construction

[0016] The present invention will be further described in detail below with reference to the embodiments, so that those skilled in the art can implement it according to the text of the description.

[0017] This case proposes an embodiment of the anti-aging encapsulant for solar photovoltaic panels, including the following materials by weight:

[0018]

[0019]

[0020] The encapsulant used in the prior art is usually ethylene-vinyl acetate copolymer (EVA), which has weak anti-aging properties and low bonding strength. For this reason, EVA was modified in this case, and EVA was introduced Propylene molecules can improve its anti-aging ability without affecting its light transmittance. In addition, the study also found that ethylene-methyl acrylate copolymer and ethylene-hydroxyethyl acrylate copolymer can be used in combination with propylene-ethylene-vinyl acetate copolymer to further improve its anti-aging ability, and at the same time, it can significantly improve the packaging ...

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Abstract

The present application discloses an anti-aging packaging adhesive for a solar photovoltaic panel. The anti-aging packaging adhesive comprises in parts by weight: 50 parts of propylene-ethylene-vinylacetate copolymer, 10-12 parts of ethylene-methyl acrylate copolymer, 10-12 parts of ethylene-hydroxyethyl acrylate copolymer, 2-3 parts of N,N-dimethyl salicylamide, 0.2-0.3 parts of ammonium sulfate and 0.2-0.3 parts of lithium fluoride. According to the present application, by modifying the conventional EVA resin and introducing propylene molecules, the anti-aging property of the packaging adhesive is greatly improved; meanwhile, with the ethylene-methyl acrylate copolymer and the ethylene-hydroxyethyl acrylate copolymer as auxiliary modified resin, not only weather resistance of the packaging adhesive is coordinately improved, but also adhesive strength of the packaging adhesive is effectively improved when the packaging adhesive is exposed to outdoor for a long time; and the introduced N,N-dimethyl salicylamide can effectively prevent the packaging adhesive from ageing and yellowing so as to reduce an impact on light transmittance and ensure power generating efficiency of the photovoltaic panel.

Description

Technical field [0001] The invention relates to a packaging hot-melt adhesive, in particular to an anti-aging packaging adhesive used for bonding toughened glass and solar cells in a solar photovoltaic panel. Background technique [0002] In a solar photovoltaic panel, the main body of power generation is a crystalline silicon cell. In order to protect this cell, it is necessary to cover the cell with a transparent tempered glass, and the connection between this tempered glass and the cell is the encapsulant. In the prior art, EVA resin is mainly used as the hot melt adhesive for this kind of encapsulation. However, EVA is prone to aging and yellowing when exposed to the air, which will affect the light transmittance, thereby affecting the power generation efficiency. Moreover, when exposed to the air for a long time, the EVA The bonding strength with tempered glass and solar cells will also be greatly reduced, thereby affecting the life of photovoltaic panel components. Summary...

Claims

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Application Information

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IPC IPC(8): C09J131/04C09J123/08C09J11/06H01L31/048
CPCY02E10/50
Inventor 朱桂林
Owner CETC NINGBO MARINE ELECTRONICS RES INST
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