Fluorocarbon coating liquid, fluorocarbon coating and solar backboard

A technology of solar back sheet and fluorocarbon coating, applied in the field of solar back sheet, can solve the problem of poor heat resistance of transparent fluorocarbon coating, and achieves satisfactory heat resistance and outdoor use effect, good stability, and satisfactory packaging strength Effect

Pending Publication Date: 2022-07-01
NINGBO EXCITON NEW ENERGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of poor heat resistance of transparent fluorocarbon coatings, the p

Method used

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  • Fluorocarbon coating liquid, fluorocarbon coating and solar backboard
  • Fluorocarbon coating liquid, fluorocarbon coating and solar backboard

Examples

Experimental program
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Effect test

preparation example Construction

[0066] Before coating the fluorocarbon coating solution on the surface of the substrate, the above preparation method further includes the step of configuring the raw material of the fluorocarbon layer into the fluorocarbon coating solution.

[0067] The fluorocarbon coating provided by the present invention carries out the following tests:

[0068] Adhesion of fluorocarbon layer: According to the standard of GB 1720-1979 "Determination of Paint Film Adhesion", test the adhesion of fluorocarbon layer to the substrate, of which 100 / 100 means no peeling, 90 / 100 means 10% off .

[0069] Encapsulation strength test: According to the standard of GB / T 31034-2014 "Insulating Backplane for Crystalline Silicon Solar Cell Modules", the bonding strength of the inner fluorocarbon layer and EVA is tested, using the 180° peel force test method.

[0070] QUV aging treatment: According to the standard of GB / T 31034-2014 "Insulation Backplane for Crystalline Silicon Solar Cell Modules", it is...

Embodiment 1

[0076] The preparation method of the fluorocarbon coating solution provided in this embodiment includes:

[0077] 70% polytetrafluoroethylene type fluorocarbon resin, 5% nano ceria UV absorber, particle size is 10~30nm, 3% matting powder, 0.5% polyacrylate additive, 12% thermoplastic polyurethane, 9.5% isocyanate. The host resin was dispersed in an organic solvent to form a fluorocarbon coating liquid with a solid content of 58%. Among them, the PTFE type fluorocarbon resin is provided by Daikin Fluorochemical, the nano ceria absorber is provided by BYK, the matting powder is provided by Grace Co., Ltd., the polyacrylate is provided by BYK, and the thermoplastic polyurethane is provided by He The isocyanate was provided by DaChem, the isocyanate was provided by Bayer, and the organic solvent was butyl acetate.

[0078] The coating was applied on transparent PET (275 μm thick) with a coating thickness of 16 μm.

[0079] The performance test results of the prepared fluorocarb...

Embodiment 2

[0081] The preparation method of the fluorocarbon coating solution provided in this embodiment includes:

[0082] 50% polytetrafluoroethylene type fluorocarbon resin, 10% nano ceria UV absorber, particle size is 10~30nm, 4% matting powder, 0.8% polyacrylate additive, 15.2% thermoplastic polyurethane, 20% isocyanate. The host resin was dispersed in an organic solvent to form a fluorocarbon coating liquid with a solid content of 50%. Among them, the PTFE type fluorocarbon resin is provided by Daikin Fluorochemical, the nano ceria absorber is provided by BYK, the matting powder is provided by Grace Co., Ltd., the polyacrylate is provided by BYK, and the thermoplastic polyurethane is provided by He The isocyanate was provided by DaChem, the isocyanate was provided by Bayer, and the organic solvent was butyl acetate.

[0083] The coating was applied on transparent PET (300 μm thick) with a coating thickness of 25 μm.

[0084] The performance test results of the prepared fluoroca...

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Abstract

The invention relates to the technical field of solar back plates, in particular to fluorocarbon coating liquid, a fluorocarbon coating and a solar back plate. In order to solve the problem of poor heat resistance of a transparent fluorocarbon coating, the invention provides the fluorocarbon coating liquid, the fluorocarbon coating and the solar backboard. The fluorocarbon coating liquid comprises the following components in percentage by weight: 50%-80% of fluorocarbon resin, 3%-10% of an inorganic nano cerium dioxide UV absorbent, 1%-5% of extinction powder, 10%-20% of an adhesion promoter, 0.3%-0.8% of an additive and 5%-20% of isocyanate. A coating formed by the fluorocarbon coating liquid is good in heat resistance at the hot spot temperature (such as 170 DEG C), small molecule precipitation and macromolecule degradation are not prone to occurring, and yellowing of the coating cannot occur in the high-temperature hot spot testing process after heat sealing of an assembly.

Description

Technical field [0001] The present invention relates to the technical field of solar backsheets. Specifically, it relates to a fluorocarbon coating liquid, a fluorocarbon coating, and a solar backsheet. Background technique [0002] In order to solve the problem of photovoltaic module power generation, the current silicon wafer cell size has changed from the traditional 163mm, 166mm to 182mm, 210mm large size. As the overall component power increases, more stringent requirements are placed on traditional backplanes. The development and application of transparent components has made an indelible contribution to the improvement of component power. Compared with traditional components, the power of transparent large-size components has exceeded 550W, and the current heating effect has become an inevitable fact during the power generation process. [0003] Due to the thermal effect caused by high current, the hot spot effect can be simulated in photovoltaic modules. The hot s...

Claims

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Application Information

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IPC IPC(8): C09D127/18C09D7/48C09D7/42C09D7/65H01L31/049
CPCC09D127/18C09D7/48C09D7/42C09D7/67C09D7/65H01L31/049C08L2201/08C08L2201/10C08L2203/204C08L2205/03C08K2003/2213C08K2201/005C08K2201/011C08L33/04C08L75/04C08K3/22C08K3/36
Inventor 简伟任汪诚王超邓文晖袁南园唐海江李刚张彦
Owner NINGBO EXCITON NEW ENERGY CO LTD
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