Scratch-resistant fluorocarbon layer coating liquid and solar back sheet using coating liquid

A technology of solar backplane and fluorocarbon layer, which is applied in the field of solar backplane, can solve the problem that the fluorocarbon layer is easy to be scratched, and achieve the effect of promoting scratch resistance, good weather resistance, and meeting the aging performance test

Active Publication Date: 2019-10-22
宁波激阳新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing fluorocarbon layer is easily scratched, the present inven...

Method used

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  • Scratch-resistant fluorocarbon layer coating liquid and solar back sheet using coating liquid
  • Scratch-resistant fluorocarbon layer coating liquid and solar back sheet using coating liquid

Examples

Experimental program
Comparison scheme
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preparation example Construction

[0062] The preparation method of the solar backplane film provided by the invention comprises the following steps:

[0063] (1) Coat the fluorocarbon layer coating solution on the surface of the substrate, and place it in a circulation oven for curing to form a fluorocarbon layer; (2) Coat the other side of the semi-finished substrate coated with the fluorocarbon layer with an adhesive layer , place it in a circulating oven for drying treatment, and then compound the fluorine film layer; (3) ripen the finished solar backplane; (4) laminate the solar backplane and EVA to prepare a simulated test package strength.

[0064] Further, (1) in the process, the temperature of the circulating oven drying of the fluorocarbon layer treatment is 150° C., and the time is 2 minutes;

[0065] Further, (2) The temperature of the circulating oven for drying the adhesive layer during the process is 90°C, and the time is 2 minutes;

[0066] Further, the aging treatment temperature in the proces...

Embodiment 1

[0079] The preparation method of the fluorocarbon layer coating solution provided in this embodiment includes:

[0080] 50% polytetrafluoroethylene type fluorocarbon resin, 25% rutile titanium dioxide, 3% matting powder, 16.5% modified thermoplastic polyurethane resin, Tg temperature of modified thermoplastic polyurethane resin is 10 ℃, 0.5% poly Acrylate resin, 5% isocyanate. The aforementioned materials were dispersed in an organic solvent to form a fluorocarbon layer coating solution with a solid content of 40%. Among them, polytetrafluoroethylene type fluorocarbon resin is provided by Daikin Fluorochemical Co., Ltd., titanium dioxide is provided by DuPont, matting powder silica is provided by Grace Co., Ltd., modified thermoplastic polyurethane resin is provided by Woda Chemical, and polyacrylate resin is provided by BYK provided it, the isocyanate was provided by Mitsui Chemicals, and the organic solvent was butyl acetate.

[0081] The coating solution is coated on a 27...

Embodiment 2

[0085] The preparation method of the fluorocarbon layer coating solution provided in this embodiment includes:

[0086] 42% polytetrafluoroethylene type fluorocarbon resin, 30% rutile type titanium dioxide, 1% matting powder, 20% modified thermoplastic polyurethane resin, Tg temperature is 30 ° C, 0.3% polyacrylate resin, 6.7% of isocyanates. The aforementioned materials are dispersed in an organic solvent to form a fluorocarbon layer coating solution with a solid content of 60%. Among them, polytetrafluoroethylene type fluorocarbon resin is provided by Daikin Fluorochemical Co., Ltd., titanium dioxide is provided by DuPont, matting powder is provided by Grace Co., Ltd., modified thermoplastic polyurethane resin is provided by Croda Chemicals, and polyacrylate is provided by BYK Chemicals. , the isocyanate was provided by Mitsui Chemicals, and the organic solvent was butyl acetate.

[0087] Coatings were applied on 275 μm PET substrates.

[0088] The thickness of the formed...

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Abstract

The present invention relates to the technical field of solar back sheets, particularly to a fluorocarbon layer coating liquid and a solar back sheet using the coating liquid. In order to solve the problem that the existing fluorocarbon layer is easily scratched, the present invention provides a scratch-resistant fluorocarbon layer coating liquid and a solar back sheet using the coating liquid, wherein the fluorocarbon layer coating liquid comprises, by weight, 40-60% of a fluorocarbon resin, 20-30% of titanium dioxide, 1-5% of matting powder, 10-20% of a modified thermoplastic polyurethane resin, 0.2-0.8% of polyacrylate, and 5-10% of isocyanate. According to the present invention, the surface of the fluorocarbon layer formed by the fluorocarbon layer coating liquid has characteristics ofscratch resistance and good weather resistance; and the inner surface of the solar back sheet using the coating liquid is excellent in scratch resistance, and the weather resistance of the solar backsheet is good.

Description

technical field [0001] The invention relates to the technical field of solar back panels, in particular to a fluorocarbon layer coating solution and a solar back panel using the coating solution. Background technique [0002] Double-sided fluorine-containing backsheet is a backsheet structure widely recognized at present. The double-sided fluorine solution has changed from the early two-sided fluorine-containing film to the current one-side fluorine film and one side fluorocarbon layer. This is a cost-effective structural solution, that is, the outer layer uses fluorine film material, and the middle layer uses Hydrolysis-resistant PET material, while the inner layer uses fluorocarbon layer. The inner fluorocarbon layer is a material that is critical to performance. [0003] In the actual manufacturing process, due to machinability problems, the raw material PET is generally used to coat fluorocarbon coatings to form fluorocarbon semi-finished products. This half of the fi...

Claims

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Application Information

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IPC IPC(8): C09D127/18C09D175/04C09D7/42C09D7/61C09D7/65C09D7/63H01L31/049
CPCC08K2003/2241C08L2201/08C08L2205/03C09D127/18C09D7/42C09D7/61C09D7/63C09D7/65H01L31/049C08L75/04C08L33/04C08K3/22C08K3/36C08K5/29Y02E10/50
Inventor 张彦汪诚简伟任缪锴夏寅薛永富唐海江李刚
Owner 宁波激阳新材料有限公司
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