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Transparent coating for photovoltaic back plate and the photovoltaic back plate

A technology of transparent coatings and photovoltaic backsheets, applied in photovoltaic power generation, polyurea/polyurethane coatings, coatings, etc., can solve the problem of low adhesion between the backsheet and the encapsulation film, low surface energy of the inner layer material, and corona process. Cumbersome and other problems, to avoid surface energy decay, save process steps, save process steps

Active Publication Date: 2020-03-17
CYBRID TECHNOLOGIES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although this type of photovoltaic backsheet improves the weather resistance of the backsheet by using a weather-resistant outer layer material, due to the low surface energy of the inner layer material, corona must be used to bond with EVA and other packaging films when preparing photovoltaic modules. Knot
However, the surface energy of the backplane after corona is continuously attenuated during the storage process. After lamination, it is still easy to cause the adhesion between the backplane and the encapsulation film to be too small, and there will be delamination and blistering during the later use of the module. Bad problem, and the corona process is cumbersome and the cost is high

Method used

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  • Transparent coating for photovoltaic back plate and the photovoltaic back plate

Examples

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Effect test

Embodiment 1

[0059] This embodiment provides a transparent coating for a photovoltaic backplane and a photovoltaic backplane;

[0060] The transparent paint includes a solvent and solid components dispersed in the solvent, and the solid content of the transparent paint is 60%;

[0061] Among them, the solvent is composed of butyl acetate and toluene in a mass ratio of 3:1, and the solid components include the following components in weight percentage: 65.5% of hydroxyl-containing fluorocarbon resin (ZHM-3 of Sanaifu), aluminum oxide (particle size 0.5-2μm) 18.7%, oligomer alkane coupling agent (Evonik Degussa’s Dynasylan 6498) 2.8%, isocyanate curing agent (Yantai Wanhua HT-100) 8.1%, UV absorber (BASF Tinuvin400) 2.8% , UV stabilizer (BASF Tinuvin123) 0.7%, dispersant (BYK163 of BYK) 0.7% and defoamer (BYK610 of BYK) 0.7%.

[0062] The photovoltaic backplane comprises a transparent substrate layer and a transparent coating disposed on one side of the transparent substrate layer, and the ...

Embodiment 2

[0065] This embodiment provides a transparent coating for a photovoltaic backplane and a photovoltaic backplane. The only difference from Embodiment 1 is that the thickness of the transparent coating is 10 μm.

Embodiment 3

[0067] This embodiment provides a transparent coating for a photovoltaic backplane and a photovoltaic backplane. The only difference from Embodiment 1 is that the ultraviolet absorber is UV571.

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Abstract

Transparent coating for a photovoltaic back plate and the photovoltaic back plate are provided. The transparent coating includes a solid component and a solvent, and the solid component includes, by weight, 40-94% of hydroxyl-containing weathering resin, 0-50% of an inorganic filler, 0.3-5% of an oligomer alkane coupling agent and 5-10% of a curing agent. The photovoltaic back plate includes a transparent substrate layer and a transparent coating layer disposed on the transparent substrate layer, and the transparent coating layer is formed by curing the transparent coating. The coating layer formed by curing the coating provided has good weather resistance and visible light transparency, and can be firmly bonded to encapsulation film of photovoltaic modules without corona, thus saving process steps, reducing the production cost, and avoiding a problem of surface energy attenuation of coating layers after corona.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic components, and in particular relates to a transparent coating for a photovoltaic backplane and a photovoltaic backplane. Background technique [0002] In recent years, in the field of photovoltaics, double-glass modules have attracted more and more attention due to their high power generation efficiency. The double-glass module is composed of front glass, encapsulation film, cell layer, encapsulation film and back plate glass. Since both sides are made of glass materials, there are always more or less problems in the application process. For example, the overall weight of the module is too heavy, the damage rate of the module is high during transportation, and the installation is difficult, so the transparent backplane of polymer material has entered people's field of vision. [0003] However, compared with glass, the weather resistance and transparency of the polymer transparent backboard ...

Claims

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Application Information

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IPC IPC(8): C09D127/16C09D175/04H01L31/049
CPCC09D127/16C09D175/04H01L31/049Y02E10/50
Inventor 夏修旸刘源陈洪野吴小平
Owner CYBRID TECHNOLOGIES INC
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