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Hydrophobic and water-resistant solar cell backsheet based on coating technology and preparation method thereof

A solar cell and coating technology, which is applied in coatings, circuits, photovoltaic power generation, etc., can solve the problems of easy hydrolysis of anti-corrosion coatings, reduce the weather resistance of backplanes, and affect the service life of solar cells, etc., to achieve good use effect, Highly productive and easy to update effects

Active Publication Date: 2021-04-02
JOLYWOOD SUZHOU SUNWATT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since solar cell modules are often erected in extreme environments such as high cold and high humidity, the solar cell backsheet is affected by the humid environment, and the anti-corrosion coating on the surface is prone to hydrolysis, thereby reducing the weather resistance of the backsheet and seriously affecting the use of solar cells. life

Method used

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  • Hydrophobic and water-resistant solar cell backsheet based on coating technology and preparation method thereof
  • Hydrophobic and water-resistant solar cell backsheet based on coating technology and preparation method thereof
  • Hydrophobic and water-resistant solar cell backsheet based on coating technology and preparation method thereof

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preparation example Construction

[0050] A method for preparing a hydrophobic and water-resistant solar cell backsheet based on coating technology, comprising the steps of:

[0051]1) Take preset quality acrylic resin, isocyanate, color paste, dispersant, fluorine-containing polyorganosiloxane, epoxy resin, leveling agent, catalyst and solvent, put it into a reaction kettle with a stirrer, and heat it at 2500r The stirring speed of / min was stirred and dispersed for 10min to obtain the anticorrosion coating for the solar battery backplane;

[0052] Among them, the preparation method of the color paste is to mix the preset quality of polybutyl methacrylate, titanium dioxide, polyvinylpyrrolidone, n-butyl caproate, barium sulfate and graphene, and mix them evenly into a mixer equipped with a stirrer. And in the reaction kettle of the reflux condenser. In addition, pick beads with a volume ratio of 0.33 were added and ground at a speed of 3000 r / min. When the fineness of the color paste was less than 10 μm, the ...

specific Embodiment approach

[0054] The preferred specific implementation is as follows:

[0055] Preparation of color paste: Weigh 48g of polybutylmethacrylate, 42g of titanium dioxide, 2g of polyvinylpyrrolidone and 8g of n-butyl caproate, mix them evenly, and add them to a reaction kettle equipped with a stirrer and a reflux condenser. In addition, about 1 / 3 of the volume ratio of pick beads was added, and the grinding was carried out at 3000r / min. When the fineness of the color paste was less than 10 μm, the color paste was obtained by filtering with a 300-mesh filter.

[0056] Preparation of solar battery backsheet: Weigh 19g polymethyl methacrylate, 43g color paste, 1.5g fluorocarbon leveling agent, 4.4g bisphenol A epoxy resin, 1g stannous octoate, 8g fluorine-containing organic Siloxane, 8.5g triphenylmethane triisocyanate, 4g n-butanol and 14.6g propylene glycol methyl ether acetate were stirred and dispersed at 2500r / min for 10min in a reactor equipped with a stirrer to obtain an anticorrosion c...

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Abstract

The invention relates to a coating technology-based hydrophobic and water-tolerant solar battery back plate and a preparation method. The solar battery back plate comprises a substrate and a coating layer; the coating layer comprises acrylic resin, fluorine-containing organic polysiloxane and isocyanate, wherein isocyanate is fluorine-containing isocyanate. The solar battery back plate has the beneficial effects as follows: by virtue of introduction of fluorine-containing organic polysiloxane, the surface hydrophobicity and water tolerance of the solar battery back plate are obviously improved, water absorption of the coating layer is lowered and the film still maintains high weather fastness; and the weather fastness and the service life of the hydrophobic and water-tolerant solar batteryback plate prepared in the invention can be effectively improved and prolonged.

Description

technical field [0001] The invention relates to the field of solar cell back sheets, in particular to a coating technology-based hydrophobic and water-resistant solar cell back sheet and a preparation process thereof. Background technique [0002] In recent years, with the continuous consumption of fossil energy and gradually becoming exhausted, solar energy, as a green renewable energy, is gradually entering people's lives. Among them, the solar cell backsheet can be located on the outermost layer of the solar cell module because of its good mechanical properties, insulation, and weather resistance, effectively protecting the solar cell from lasting and stable operation for more than 25 years. [0003] Since solar cell modules are often erected in extreme environments such as high cold and high humidity, the solar cell backsheet is affected by the humid environment, and the anti-corrosion coating on the surface is prone to hydrolysis, thereby reducing the weather resistance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/049H01L31/18C09D133/00C09D183/08C09D7/63
CPCC08L2203/204C09D133/00C09D7/63H01L31/049C08L83/08C08K5/29C08K5/3477Y02E10/50
Inventor 林建伟张付特唐邓
Owner JOLYWOOD SUZHOU SUNWATT