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Weather-proof packaging glue for assembling solar energy photoelectric panel

A solar photovoltaic panel, weather-resistant technology, applied in the field of encapsulation hot melt adhesive, can solve the problems of decreased bonding strength, affecting power generation efficiency, affecting light transmittance, etc., so as to improve the bonding strength, ensure power generation efficiency, and improve weather resistance performance. Effect

Inactive Publication Date: 2016-04-20
SUZHOU JIAYIDA ELECTRICAL APPLIANCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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, which will affect the life of photovoltaic panel components

Method used

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  • Weather-proof packaging glue for assembling solar energy photoelectric panel
  • Weather-proof packaging glue for assembling solar energy photoelectric panel
  • Weather-proof packaging glue for assembling solar energy photoelectric panel

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Embodiment Construction

[0015] The present invention will be further described in detail below in conjunction with the embodiments, so that those skilled in the art can implement it with reference to the description.

[0016] This case proposes an embodiment of a weather-resistant encapsulant for solar photovoltaic panel assembly, including the following materials by weight:

[0017]

[0018] In the above embodiments, in the ethylene-vinyl acetate copolymer, the ethylene content is preferably 40-42 wt%, and the rest is vinyl acetate.

[0019] In the above embodiments, the number average molecular weight of the ethylene-vinyl acetate copolymer is preferably 20000-22000 g / mol.

[0020] In the above embodiments, in the propylene-hydroxyethyl acrylate copolymer, the content of propylene is preferably 56-58 wt%, and the rest is hydroxyethyl acrylate.

[0021] In the above embodiments, the number average molecular weight of the propylene-hydroxyethyl acrylate copolymer is preferably 18000-20000 g / mol. ...

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Abstract

The invention discloses weather-proof packaging glue for assembling a solar energy photoelectric panel. The weather-proof packaging glue comprises, by weight, 100 parts of epoxy resin, 6-8 parts of ethylene-vinyl acetate copolymer, 13-15 parts of propylene-hydroxyethyl acrylate copolymer, 2-3 parts of propyl p-hydroxybenzoate and 0.2-0.3 part of potassium propionate. According to the weather-proof packaging glue, multiple types of modified copolymer are introduced into an epoxy resin system, so that weatherability of the packaging glue is greatly improved; meanwhile, the ethylene-vinyl acetate copolymer, the propylene-hydroxyethyl acrylate copolymer, the propyl p-hydroxybenzoate and the potassium propionate serve as auxiliary modifying agents, weatherability of the packaging glue can be improved through coordination, bonding strength of the packaging glue after the packaging glue is exposed outdoor for a long time can be further effectively improved, influence of the packaging glue to the light transmittance is lowered, and electricity generating efficiency of the photovoltaic panel is guaranteed.

Description

technical field [0001] The invention relates to an encapsulating hot-melt adhesive, in particular to a weather-resistant encapsulating adhesive used for bonding tempered glass and battery sheets in a solar photovoltaic panel assembly process. Background technique [0002] In solar photovoltaic panels, the main body of power generation is a crystalline silicon cell. In order to protect the cell, it is necessary to cover the cell with a transparent tempered glass, and the encapsulation glue is used to connect the tempered glass and the cell. In the prior art, EVA resin is mainly used as this encapsulation 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. Contents ...

Claims

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Application Information

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IPC IPC(8): H01L31/048
CPCY02E10/50H01L31/0481
Inventor 朱桂林
Owner SUZHOU JIAYIDA ELECTRICAL APPLIANCES
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