Solar backboard with low water vapor permeability

A solar backplane and low water vapor technology, which is applied in the field of solar backplanes, can solve the problems of poor insulation, poor barrier performance, and high water vapor permeability, and achieve the effects of high moisture and heat resistance, high weather resistance, and improved transmittance

Inactive Publication Date: 2016-11-16
WUXI SUNOCEAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Problems of high water vapor permeability, p

Method used

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  • Solar backboard with low water vapor permeability

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Example Embodiment

[0017] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

[0018] like figure 1 As shown, a kind of solar back sheet with low water vapor permeability comprises polyester film 3, and the surface of both sides of polyester film 3 is covered with anti-reflection film, and the side with anti-reflection film on polyester film 3 is passed high adhesion Layer 2 is connected to the weather-resistant layer 1, and the other side of the polyester film 3 with the antireflection film is also connected to the structural reinforcement layer 4 through the high adhesive layer 2, and the weather-resistant adhesive layer 5 is also bonded to the outside of the structural reinforcement layer; The junction layer 2 is composed of maleic anhydride and ethyl methacrylate copolymerized, and the polyester film is composed of biaxially stretched polyester film prepared from polyethylene terephthalate. The thickness of the ...

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Abstract

The invention relates to a solar backboard with low water vapor permeability. The solar backboard comprises a polyester film, the surfaces at the two sides of the polyester film are each covered with a reflection reducing coating, one side, provided with the one reflection reducing coating, of the polyester film is connected with a weather-resistant layer through a high adhesive coating, the other side, provided with one reflection reducing coating, of the polyester film is also connected with a structure enhancement layer through a high adhesive coating, and the outer side of the structure enhancement layer is also bonded with a weather-resistant adhesive coating; and the high adhesive coatings are formed by copolymerizing maleic anhydride and hydroxyethyl methacrylate, and the polyester film is composed of a biaxially oriented polyethylene terephthalate film prepared by polyethylene glycol terephthalate. The material of the weather-resistant layer of the solar battery backboard is a fluorine-containing weather-resistant layer which has the advantages of low cost, good environmental protection performance and better mechanical performance and bonding strength than a conventional backboard. Through arrangement of the reflection reducing coatings on the surfaces of the polyester film, the transmittance of the film can be improved, and the insulation performance is also greatly improved. The water vapor permeability of the polyester film can reach 0.89g/m<2>, and the surface tension and the water resistance are quite high.

Description

technical field [0001] The invention relates to the field of solar cell backboards, in particular to a solar backboard with low water vapor permeability. Background technique [0002] Solar energy, as a green and inexhaustible energy source, is undoubtedly the best choice to replace traditional thermal power generation. Since solar cells need to be exposed to the outdoors for a long time, the cells in photovoltaic modules need to be protected to prevent atmospheric pollution. The impact and overlooking of environmental factors such as water vapor, oxygen, and ultraviolet rays. The solar backsheet is one of the accessories of the whole solar cell. It mainly plays the role of mechanical support and protection of the cell from the penetration of environmental factors. At present, the performance of the solar backsheet with the existing structure is unstable, and the complex structure leads to complicated processing and increased production costs. . Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): H01L31/048H01L31/049B32B27/06B32B7/12B32B33/00
CPCY02E10/50H01L31/0481B32B7/12B32B27/06B32B33/00B32B2307/206B32B2307/412B32B2307/712B32B2307/73B32B2457/10H01L31/049
Inventor 黄新东丁峰
Owner WUXI SUNOCEAN
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