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A kind of solar panel back film and preparation method thereof

A technology for solar cells and plate back films, applied in the field of solar back films, can solve the problems of unsatisfactory tensile strength and double 85 aging results, and achieve the effects of improved weather resistance and durability, simple preparation process and good film forming effect.

Active Publication Date: 2016-09-14
SUNSHORE SOLAR ENERGY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the technical solution is to coat the coating of the weather-resistant layer on the surface of the substrate, and obtain the weather-resistant layer after curing. Acrylic resin is the main resin of the weather-resistant layer, and the performance of the coating is mainly affected by the performance of the acrylic resin. Its tensile strength and double 85 aging results are unsatisfactory

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A solar cell panel back film, including a three-layer structure from top to bottom, the first layer is a weather-resistant layer, the second layer is a PET layer, the third layer is an adhesive layer, the first layer and the second layer and the second layer The weather-resistant layer is composed of the following components in mass parts: 55 parts of epoxy resin, 15 parts of polytetrafluoroethylene, 12 parts of white carbon black, 3 parts of aluminum silicate fiber, 3 parts of styrene, 3 parts of diphenolic propane, 5 parts of polyisocyanate curing agent and 12 parts of acetone.

[0025] According to the preparation method provided by the invention to prepare solar cell panel back film, the preparation steps are as follows:

[0026] (1) Preparation of weather-resistant layer: Add epoxy resin, polytetrafluoroethylene, diphenolic propane, and styrene to the solvent in sequence, and stir evenly to obtain a mixed solution, then add inorganic fillers and aluminum silicate f...

Embodiment 2

[0031] A solar cell panel back film, including a three-layer structure from top to bottom, the first layer is a weather-resistant layer, the second layer is a PET layer, the third layer is an adhesive layer, the first layer and the second layer and the second layer The weather-resistant layer is composed of the following components in mass parts: 75 parts of epoxy resin, 30 parts of polytetrafluoroethylene, 20 parts of bentonite, 8 parts of aluminum silicate fiber, styrene 6 parts, 5 parts of diphenolic propane, 10 parts of polyisocyanate curing agent and 22 parts of acetone.

[0032] According to the preparation method provided by the invention to prepare solar cell panel back film, the preparation steps are as follows:

[0033] (1) Preparation of weather-resistant layer: Add epoxy resin, polytetrafluoroethylene, diphenolic propane, and styrene to the solvent in sequence, and stir evenly to obtain a mixed solution, then add inorganic fillers and aluminum silicate fibers, and ...

Embodiment 3

[0038] A solar cell panel back film, including a three-layer structure from top to bottom, the first layer is a weather-resistant layer, the second layer is a PET layer, the third layer is an adhesive layer, the first layer and the second layer and the second layer The weather-resistant layer is composed of the following components in mass parts: 70 parts of epoxy resin, 28 parts of polytetrafluoroethylene, 18 parts of kaolin, 7 parts of aluminum silicate fiber, styrene 6 parts, 5 parts of diphenol propane, 9 parts of polyamide curing agent and 20 parts of butanone.

[0039] According to the preparation method provided by the invention to prepare solar cell panel back film, the preparation steps are as follows:

[0040] (1) Preparation of weather-resistant layer: Add epoxy resin, polytetrafluoroethylene, diphenolic propane, and styrene to the solvent in sequence, and stir evenly to obtain a mixed solution, then add inorganic fillers and aluminum silicate fibers, and after ultr...

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Abstract

The invention discloses a solar cell panel back membrane and a preparation method thereof, and relates to the technical field of solar cell panel back membranes. The back membrane comprises a three-layer structure from top to bottom, the first layer is a weatherable layer, the second layer is a PET layer, the third layer is an adhesion layer, and a glue is used to connect the first layer and the second layer, and connect the second layer and the third layer. The weatherable layer has the thickness of 20-50 um u, and is composed of the following compositions in parts by mass: 55-75 parts of epoxy resin, 15-30 parts of teflon, 12-20 parts of an inorganic filling material, 3-8 parts of alumina silicate fiber, 3-6 parts of styrene, 3-5 parts of bisphenol A, 5-10 parts of a curing agent, and 12-22 parts of a solvent. The provided solar cell panel back membrane is a back membrane with good weatherability and tensile strength, can reach 2000 h or more in a double 85 ageing experiment, also is simple in preparation technology and relatively low in cost, and is a relatively ideal solar cell panel back membrane material.

Description

technical field [0001] The invention belongs to the technical field of solar back film, and in particular relates to a back film of a solar panel and a preparation method thereof. Background technique [0002] Solar cell module packaging materials mainly include glass, EVA, adhesive film, frame, back film, junction box, silica gel, etc. At present, other packaging materials except the back film have been localized in China's photovoltaic industry, which greatly reduces the cost of solar cell modules. Manufacturing cost per unit of power generated. [0003] However, as an important packaging material for solar cell modules, the back film has high technology and threshold requirements. In addition, related raw materials have long been restricted by the patented technology of foreign fluorine chemical giants. Today, the degree of localization is extremely low, resulting in the current domestic Most of the back films used by solar cell module manufacturers are imported products...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/38B32B27/08H01L31/048H01L31/049C08L63/00C08L27/18C08K13/04C08K7/10C08K3/36C08K3/34C08K5/13
CPCY02E10/50
Inventor 黄新东刘天人
Owner SUNSHORE SOLAR ENERGY IND
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