High-resistance solar panel back membrane and preparation method thereof

A technology for solar cell and panel back film, applied in the field of solar back film, can solve the problems of unstable barrier performance of back film, appearance of gaps and small holes, loss of barrier performance, etc., and achieves low cost, easy processing and molding, and barrier performance. Good results

Active Publication Date: 2015-02-18
谭家湾遗址公园运营管理(桐乡乌镇)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen from this that the material used as a barrier in this technical solution is aluminum foil, and the aluminum foil is bonded to the substrate film to achieve the barrier effect by using the high density of the aluminum foil. However, the aluminum foil is bonded to the substrate through bonding. The adhesion is small, and it is prone to blistering. Secondly, the aluminum foil is eroded by air and moisture, and cracks and small holes will appear, thus losing its barrier performance. Therefore, the barrier performance of the back film provided by this solution is not stable. Not good for long-term use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high-barrier solar cell panel back film, which is a three-layer composite film structure with two layers inside and outside and a middle layer, the outer layer is a weather-resistant layer, the middle layer is a PET layer, the inner layer is an adhesive layer, and the outer layer and the middle layer and the middle layer It is connected with the inner layer by glue, and the outer weather-resistant layer is composed of the following components in mass parts: 25 parts of ethylene vinyl alcohol copolymer, 15 parts of polyamide fiber, 10 parts of silicone resin, 2 parts of triethyl phosphate parts, 3 parts of silane coupling agent, 1 part of aramid fiber, 5 parts of isocyanate curing agent and 15 parts of acetone.

[0024] A method for preparing a back film of a high-barrier solar cell panel, the preparation steps are as follows:

[0025] (1) Add ethylene vinyl alcohol copolymer, polyamide fiber and silicone resin to the solvent. After mixing evenly, add triethyl phosphat...

Embodiment 2

[0029] A high-barrier solar cell panel back film, which is a three-layer composite film structure with two layers inside and outside and a middle layer, the outer layer is a weather-resistant layer, the middle layer is a PET layer, the inner layer is an adhesive layer, and the outer layer and the middle layer and the middle layer It is connected with the inner layer by glue, and the outer weather-resistant layer is composed of the following components in mass parts: 45 parts of ethylene vinyl alcohol copolymer, 35 parts of polyamide fiber, 16 parts of silicone resin, 5 parts of triethyl phosphate parts, 8 parts of silane coupling agent, 4 parts of aramid fiber, 10 parts of isocyanate curing agent and 25 parts of acetone.

[0030] A method for preparing a back film of a high-barrier solar cell panel, the preparation steps are as follows:

[0031] (1) Add ethylene vinyl alcohol copolymer, polyamide fiber and silicone resin to the solvent. After mixing evenly, add triethyl phosph...

Embodiment 3

[0035] A high-barrier solar cell panel back film, which is a three-layer composite film structure with two layers inside and outside and a middle layer, the outer layer is a weather-resistant layer, the middle layer is a PET layer, the inner layer is an adhesive layer, and the outer layer and the middle layer and the middle layer It is connected with the inner layer by glue, and the outer weather-resistant layer is composed of the following components in mass parts: 28 parts of ethylene vinyl alcohol copolymer, 18 parts of polyamide fiber, 11 parts of silicone resin, 2 parts of triethyl phosphate 4 parts, 4 parts of silane coupling agent, 2 parts of aramid fiber, 7 parts of isocyanate curing agent and 16-24 parts of xylene.

[0036] A method for preparing a back film of a high-barrier solar cell panel, the preparation steps are as follows:

[0037] (1) Add ethylene vinyl alcohol copolymer, polyamide fiber and silicone resin to the solvent. After mixing evenly, add triethyl pho...

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PUM

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Abstract

The invention provides a high-resistance solar panel back membrane and a preparation method of the high-resistance solar panel back membrane, and relates to the technical field of solar panel back membranes. The high-resistance solar panel back membrane is a three-layer composite membrane structure including an inner layer, an outer layer and a middle layer, wherein the outer layer is a weather-proof layer, the middle layer is a PET layer, the inner layer is an adhesive layer, the outer layer is connected with the middle layer through an adhesive, and the middle layer and the inner layer are connected through an adhesive; the outer layer weather-proof layer comprises, by weight parts, 25-45 parts of ethylene-vinyl alcohol, 15-35 parts of nylon, 10-16 parts of organic silicon resin, 2-5 parts of triethyl phosphate, 3-8 parts of a silane coupling agent, 1-4 parts of aramid fiber, 5-10 parts of a curing agent and 15-25 parts of a solvent. The high-resistance solar panel back membrane is good in weather resistance and corrosion resistance and quite good in gas and water barrier property; the materials are easy to machine and form, the preparation process is simple, the cost is low, and the high-resistance solar panel back membrane is ideal.

Description

technical field [0001] The invention belongs to the technical field of solar back film, and in particular relates to a high-barrier solar cell panel back film and a preparation method thereof. Background technique [0002] The back film of solar panels is one of the packaging materials for solar cell modules. Its main performance is to encapsulate crystalline silicon. In addition to excellent electrical insulation properties, anti-oxidation, anti-humidity and long-term prevention of hydrolysis of adhesives, etc., It should also have high barrier properties. [0003] The barrier performance of the back film includes not only the barrier of water vapor, but also the barrier of gas. Once air and water vapor enter the interior of the solar cell module, it will corrode the corresponding component very quickly and cause damage to the solar panel. Therefore, the barrier performance of the back film Also crucial. [0004] Existing solar panel back film barrier materials are genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/049B32B27/08
CPCY02E10/50B32B27/08
Inventor 黄新东刘天人
Owner 谭家湾遗址公园运营管理(桐乡乌镇)有限公司
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