Fluorocarbon coating liquid and solar backboard

A technology of solar back sheet and coating liquid, applied in the field of solar back sheet, can solve the problem of low reflectivity, achieve the effects of anti-aging packaging strength, satisfying packaging strength and good reflectivity

Pending Publication Date: 2022-05-20
NINGBO EXCITON NEW ENERGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of low reflectivity when the inner layer of the solar backboard adopts an all-black coating, the invention provides a fluorocarbon coating solution and a solar backboard

Method used

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  • Fluorocarbon coating liquid and solar backboard
  • Fluorocarbon coating liquid and solar backboard
  • Fluorocarbon coating liquid and solar backboard

Examples

Experimental program
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Effect test

preparation example Construction

[0064] The preparation method of the solar backplane film provided by the invention comprises the following steps:

[0065] (1) Coat the white coating solution on the surface of the substrate, and place it in a circulation oven for curing to form a white fluorocarbon coating; (2) Use grid printing to print black grid fluorine on the white fluorocarbon layer The carbon layer is placed in a circulation oven for heat curing to form a black grid-like fluorocarbon coating; (3) Coat the other side of the semi-finished substrate coated with a black grid fluorocarbon layer with an adhesive to form an adhesive layer and place it on the Circulating oven drying treatment, and then composite fluorine film layer; (4) curing the finished solar backsheet; (5) laminating the fluorocarbon layer and EVA of the solar backsheet to prepare a simulated component to test the packaging strength.

[0066] Further, (1) in the process, the drying temperature of the circulating oven for the treatment of ...

Embodiment 1

[0083] This embodiment provides a kind of fluorocarbon coating liquid, the preparation method of this fluorocarbon coating liquid comprises:

[0084] 61% polytetrafluoroethylene type fluorocarbon resin, 3.1% high-pigment carbon black, particle size 5-15nm, 30% thermoplastic polyurethane, 2% matting silica particles, 0.3% polyacrylate, 3.6% isocyanate. The aforementioned raw materials were dispersed in an organic solvent to form a fluorocarbon coating solution with a solid content of 53%. Among them, polytetrafluoroethylene type fluorocarbon resin is provided by Daikin Fluorochemical Co., Ltd., carbon black is provided by Mitsubishi Corporation of Japan, thermoplastic polyurethane is provided by Croda Chemicals, matting agent is provided by Grace Co., Ltd., polyacrylate is provided by BYK Chemicals Provided, the isocyanate is provided by Bayer, and the organic solvent is butyl acetate.

[0085] Apply the fluorocarbon coating solution on the white fluorocarbon coating and cure...

Embodiment 2

[0090] This embodiment provides a kind of fluorocarbon coating liquid, the preparation method of this fluorocarbon coating liquid comprises:

[0091] 80% polytetrafluoroethylene type fluorocarbon resin, 3% high-pigment carbon black, particle size 5-15nm, 11% thermoplastic polyurethane, 2.5% matting silica particles, 0.3% polyacrylate, 3.2 % isocyanate. The aforementioned raw materials are dispersed in an organic solvent to form a fluorocarbon coating solution with a solid content of 65%. Among them, polytetrafluoroethylene type fluorocarbon resin is provided by Daikin Fluorochemical Co., Ltd., carbon black is provided by Mitsubishi Corporation, thermoplastic polyurethane is provided by Croda Chemicals, matting agent is provided by Grace Co., Ltd., and polyacrylate is provided by BYK Chemicals , the isocyanate is provided by Bayer, and the organic solvent is butyl acetate.

[0092] Apply the fluorocarbon coating solution on the white coating of the preform, and form a black g...

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Abstract

The invention provides a UV-resistant black fluorocarbon coating liquid, which comprises the following components in percentage by weight: 60 to 80 percent of fluorocarbon resin, 3 to 10 percent of carbon black with the particle size of 5 to 15 nm, 2 to 5 percent of matting powder, 0.2 to 0.8 percent of polyacrylate, 10 to 30 percent of thermoplastic polyurethane resin and 3 to 10 percent of isocyanate, and the solid content is controlled to be 50 to 65 percent. All the components are limited in the content range, the fluorocarbon resin can be subjected to primary reaction under the high-temperature condition and then cured at the temperature of 50 DEG C for 48 hours, and a high-density black coating is formed on the surface of a white fluorocarbon coating. When the coating is laminated with EVA, excellent packaging strength can be shown, high packaging strength is still kept after a damp-heat aging test, and appearance change does not occur after QUV treatment.

Description

technical field [0001] The invention relates to the technical field of solar backboards, in particular to a fluorocarbon coating liquid and a solar backboard. Background technique [0002] The black components of solar cells include battery sheets, solar backplanes (that is, solar battery backplanes, also referred to as backplanes), junction boxes, and soldering strips. Black components require the backplane, cells, and ribbons to be all black, and the complete component is black from the outside. This module requires the inner layer of the backplane (note: the backplane is a sandwich structure, the inner layer facing the cell, and the outer layer facing the air) to be black coated. The traditional method is to directly apply a layer of all-black coating. The disadvantage of this method is that the reflectivity of the all-black coating will be lower than that of the general white coating, which will lead to a decrease in the overall module power. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/18C09D175/04C09D133/04C09D7/61H01L31/049
CPCC09D127/18C09D7/61H01L31/049C08L2205/03C08L75/04C08L33/04C08K3/04C08K3/36Y02E10/50
Inventor 汪诚简伟任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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