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Norbornene copolymer modified polyolefin solar cell rear film and processing technology thereof

A technology of copolymer modification and norbornene, applied in sustainable manufacturing/processing, circuits, photovoltaic power generation, etc., can solve problems such as brittleness, component defects, wrinkles, etc., achieve high water vapor barrier properties, and improve production Good efficiency and good adhesion

Active Publication Date: 2012-11-28
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

Since the battery back film is located on the outermost layer of the back of the solar cell module, it is easy to become brittle in long-term outdoor use, and cannot effectively protect the solar cell module for long-term use
The material for making the back film needs to have good hardness, otherwise it is easy to cause problems such as wrinkles during the production process of solar cell modules, resulting in defects or failures of the modules

Method used

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  • Norbornene copolymer modified polyolefin solar cell rear film and processing technology thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The thickness of the base layer 1 of the solar cell back film is 0.1 mm, the base layer 1 is made of PET, the thickness of the surface layer 2 is 0.005 mm, the thickness of the bottom layer 3 is 0.005 mm, the norbornene copolymer and vinylidene fluoride in the surface layer 2 - The weight ratio of acrylic copolymer is 1:1 and the weight ratio of norbornene copolymer and EVA in bottom layer 3 is 1.5:1.

Embodiment 2

[0035] The thickness of the base layer 1 of the solar cell back film is 2.0 mm, the base layer 1 is composed of a norbornene copolymer, the thickness of the surface layer 2 is 0.01 mm, the thickness of the bottom layer 3 is 0.01 mm, the norbornene copolymer in the surface layer 2 and The weight ratio of vinylidene fluoride-acrylic acid copolymer was 1.1:1, and the weight ratio of norbornene copolymer and EVA in bottom layer 3 was 1.6:1.

Embodiment 3

[0037] The thickness of the base layer 1 of the solar cell back film is 6.0 mm, the base layer 1 is made of PP, the thickness of the surface layer 2 is 0.03 mm, the thickness of the bottom layer 3 is 0.03 mm, the norbornene copolymer and vinylidene fluoride in the surface layer 2 - The weight ratio of acrylic copolymer is 1.2:1 and the weight ratio of norbornene copolymer and EVA in bottom layer 3 is 1.7:1.

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Abstract

The invention provides a norbornene copolymer modified polyolefin solar cell rear film. The norbornene copolymer modified polyolefin solar cell rear film comprises a base layer, a surface layer and a bottom layer, wherein the base layer is formed by PET (Polyethylene Glycol Terephthalate) or a norbornene copolymer or PP (Propene Polymer); the surface layer is positioned on the upper surface of the base layer and formed by an eutectic based on the norbornene copolymer and a copolymer of vinylidene fluoride and crylic acid; and the bottom layer is positioned on the lower surface of the base layer and formed by the eutectic based on the norbornene copolymer and an EVA (Ethylene vinyl acetate Copolymer). The norbornene copolymer modified polyolefin solar cell rear film provided by the invention has the characteristics of heat and humidity resistance, aging resistance, tearing resistance, hydrolysis resistance, high barrier property to steam, high insulating performance, high strength, stability in dimension, and easiness in processing and forming, is beneficial to the protection of a solar cell module, and prolongs the service life of a solar cell.

Description

technical field [0001] The invention relates to the field of solar cell back film, in particular to a norbornene copolymer modified polyolefin-based solar cell back film. At the same time, it also relates to a processing technology of the solar battery back film. Background technique [0002] The solar cell back film is an integral part of the solar cell. The back film is the protective material on the back of the cell, which is used to support and fix the solar cell and protect the solar cell components. Since the battery back film is located on the outermost layer of the back of the solar cell module, it is easy to become brittle in long-term outdoor use, and cannot effectively protect the solar cell module for long-term use. The material for making the back film needs to have good hardness, otherwise it is easy to cause problems such as wrinkles during the production process of solar cell modules, resulting in defects or failures of the modules. At the same time, the ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H01L31/18B32B27/32
CPCY02E10/50Y02P70/50
Inventor 林建伟夏文进张育政王志
Owner 江苏中来新材科技有限公司
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