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A kind of weather-resistant solar battery back plate and preparation method thereof

A solar cell, weather resistance technology, applied in the direction of climate sustainability, circuits, electrical components, etc., can solve the problems of high price, poor weather resistance of the backplane, and inability to meet the requirements of high-end products

Active Publication Date: 2020-09-18
温岭市银途鞋业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, TPT and TPE have weather-resistant fluorine-containing surface materials, which make them excellent in weather resistance. However, most of these fluorine-containing materials are imported from abroad and are expensive. The backsheets of all-PET and PET / polyolefin structures have poor weather resistance and cannot Meet the requirements of high-end products

Method used

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  • A kind of weather-resistant solar battery back plate and preparation method thereof
  • A kind of weather-resistant solar battery back plate and preparation method thereof

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preparation example Construction

[0028] Correspondingly, the present invention also provides a method for preparing a weather-resistant solar battery back sheet, comprising the following steps: performing esterification and polycondensation reaction of terephthalic acid and hexafluoropentanediol to obtain a first fluoropolymer, and preparing the obtained The above-mentioned fluoropolymer is melt-extruded at 220-250°C, cooled and solidified, and rolled to obtain the first weather-resistant film; terephthalic acid and hexafluoropentanediol are reacted through esterification and polycondensation to obtain the second fluoropolymer , the fluoropolymer is melt-extruded at 220-250°C, cooled and solidified, and rolled to obtain a second weather-resistant film; the first adhesive, the second adhesive and the first composition are independently prepared in the Melt extrusion at 220-250°C, cooling and solidification, and roll calendering to obtain the first adhesive film, the second adhesive film and the core film, the f...

Embodiment 1

[0039] The preparation method of the fluorine-containing polymer comprises the following steps: adding 100g of purified terephthalic acid and 140g of hexafluoropentanediol into a polymerization reactor, sealing it, and carrying out the esterification reaction at 270° C. for 2 hours under reflux, and after the esterification reaction Add the catalyst antimony trioxide, lower the pressure to below 180Pa, carry out the polycondensation reaction at 250°C for 4 hours, then coagulate the product in deionized water, and dry it in a vacuum oven at 60°C for 12 hours to obtain fluorine-containing polymer things.

[0040] The first composition forming the core layer consists of the following components by weight: 70 parts of ethylene-butadiene-styrene triblock copolymer, 20 parts of silicon dioxide, 3 parts of coupling agent KH570, 0.5 part of antioxidant 1010.

[0041] The preparation method of the weather-resistant solar battery back sheet is as follows:

[0042] Preparation of base ...

Embodiment 2

[0045] The preparation method of the fluorine-containing polymer comprises the following steps: adding 100g of purified terephthalic acid and 130g of hexafluoropentanediol into a polymerization reactor, sealing it, and carrying out an esterification reaction at 280°C for 2.5 hours under reflux, and after the esterification reaction Add catalyst antimony acetate, lower the pressure to below 180Pa, carry out polycondensation reaction at 260°C for 5 hours, then coagulate the product in deionized water, and dry it in a vacuum oven at 65°C for 15 hours to obtain a fluoropolymer.

[0046] The first composition forming the core layer consists of the following components by weight: 72 parts of ethylene-butadiene-styrene triblock copolymer, 23 parts of silicon dioxide, 4 parts of coupling agent KH550, 0.7 parts of antioxidant 300.

[0047] The preparation method of the weather-resistant solar battery back sheet is as follows:

[0048] Preparation of base film: Melt and extrude the flu...

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Abstract

The invention provides a weather-proof solar cell backboard, and the backboard sequentially comprises a first weather-proof layer, a first gluing layer, a core layer, a second gluing layer and a second weather-proof layer. The fluorine-containing polymer employed by the backboard has the good insulating performances, the good mechanical strength and the vapor blocking performances like a PET film, and also has the weather resistance, self-cleaning performance, corrosion resistance, washing resistance, vapor blocking performance and inadhesion performance like a fluorine-containing polymer material. A composition which contains ethylene-butadiene-styrene triblock copolymer and is employed by the core layer is good in mechanical performances and is high in ultraviolet aging resistance, and the gluing layers are high in cohesiveness, thereby enabling the whole backboard to be good in mechanical performance and ultraviolet aging resistance. The backboard is simple in manufacturing technology, is easy to operate, does not exert high requirements for equipment, and is low in cost. Therefore, the prepared backboard is good in weather resistance, and is lower in cost.

Description

technical field [0001] The invention relates to the technical field of solar cell manufacturing, in particular to a weather-resistant solar cell back plate and a preparation method thereof. Background technique [0002] Solar cells are devices that directly convert light energy into electrical energy through the photoelectric effect or photochemical effect, and are widely used in military, aerospace, industry, commerce, agriculture, communications, household appliances, and public facilities. Solar cell backsheet is one of the packaging materials for solar cell modules. Its main performance is to encapsulate crystalline silicon, which plays a role in protecting solar modules from natural environments such as water vapor, ultraviolet rays, temperature and frost. Its performance directly affects solar energy. Battery photoelectric conversion efficiency and service life. [0003] A solar cell panel is usually a stacked structure consisting of a transparent cover, a sealant lay...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/049H01L31/0216H01L31/18
CPCH01L31/02167H01L31/02168H01L31/049H01L31/1876Y02E10/50Y02P70/50
Inventor 魏亮
Owner 温岭市银途鞋业有限公司
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