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Method for preparing graphene film on surface of photovoltaic cell EVA encapsulation glue film

A technology of graphene film and encapsulation film, which is applied in the direction of coating, etc., to achieve the effect of simple process, lower drying temperature and shorter drying time

Inactive Publication Date: 2018-05-18
ZHEJIANG QIXIN NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on the preparation of graphene composite nano-films on the surface of EVA, which opens up a new path for the application of graphene in EVA materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1) Add 1ml of silane coupling agent KH550 and 1ml of Z6020 to 98ml of ethanol solvent, stir well to mix them evenly, and obtain KH550-Z6020 / ethanol solution;

[0015] 2) Add 20 mg of graphene in step 1, and ultrasonically disperse for 2 hours to obtain a graphene suspension;

[0016] 3) coating: the graphene suspension in the above-mentioned steps 2 is sprayed onto the surface of the EVA encapsulating adhesive film and then dried and cured;

[0017] 4) hot pressing: the EVA encapsulating adhesive film of the graphene film attached to the surface in the above-mentioned steps 3 is carried out hot pressing, so just obtain the EVA encapsulating adhesive film that the surface is deposited with graphene nano film.

Embodiment 2

[0019] 1) Add 1ml of Z6032 silane coupling agent to 99ml of methanol solvent, stir well to make it evenly mixed, and obtain KH570 / methanol solution;

[0020] 2) Add 10 mg of graphene in step 1, and ultrasonically disperse for 1 hour to obtain a graphene suspension;

[0021] 3) coating: drying and curing after the above-mentioned graphene suspension is spin-coated onto the surface of the EVA packaging adhesive film;

[0022] 4) hot pressing: the nano-coating attached to the surface of the EVA packaging film is hot-pressed. In this way, the EVA encapsulating adhesive film with graphene nano-film deposited on the surface is obtained.

Embodiment 3

[0024] 1) Add 0.5ml Z6030 silane coupling agent to 99.5ml propanol solvent, stir well to make it evenly mixed, and obtain KH550 / propanol solution;

[0025] 2) Add 15 mg of graphene in step 1, and ultrasonically disperse for 1.5 hours to obtain a graphene suspension;

[0026] 3) coating: drying and curing after the above-mentioned graphene suspension is spin-coated onto the surface of the EVA packaging adhesive film;

[0027] 4) hot pressing: the nano-coating attached to the surface of the EVA packaging film is hot-pressed. In this way, the EVA encapsulating adhesive film with graphene nano-film deposited on the surface is obtained.

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Abstract

The invention relates to a method for preparing a graphene film on the surface of a photovoltaic cell EVA encapsulation glue film, wherein a graphene nanometer film is prepared on the surface of a photovoltaic cell EVA encapsulation glue film as a substrate material. The method comprises: preparing a silane coupling agent solution by using an alcohol as a solvent according to a certain volume ratio, and completely stirring to uniformly mix; adding graphene to the silane coupling agent solution according to a ratio of 0.1-0.2 mg / ml, and carrying out ultrasonic dispersion for 1-3 h to obtain a graphene suspension; coating the surface of the EVA encapsulation glue film with the graphene suspension in a spray coating or rotary coating manner, drying, and curing; and carrying out hot pressing treatment on the nanometer film attached to the surface of the EVA encapsulation glue film so as to obtain the EVA encapsulation glue film with the graphene nanometer film deposited on the surface. According to the present invention, the method has advantages of simple process and low cost, and is suitable for large-scale industrial application; and with the method, the graphene can be uniformly distributed on the surface of the EVA encapsulation glue film, such that the thermal conductivity and the electrical conductivity of the graphene can be easily provided so as to prolong the service lifeof the EVA encapsulation glue film.

Description

technical field [0001] The invention belongs to the field of nano-film preparation, and relates to a preparation method of a graphene nano-film, in particular to a method for preparing a graphene nano-film on the surface of a photovoltaic cell EVA packaging adhesive film. Background technique [0002] Ethylene-vinyl acetate copolymer (EVA) is a random copolymer with a high degree of branching, which is formed by the copolymerization of ethylene monomer and vinyl acetate monomer. EVA has excellent elasticity, flexibility, impact resistance, filler compatibility and heat sealing, and has good stress crack resistance, low temperature resistance, chemical stability and non-toxicity, making it widely used in Film products, foaming materials, wires and cables, shoemaking, photovoltaic cell packaging film and hot melt adhesives and other fields. [0003] EVA for photovoltaic cell packaging is based on EVA (vinyl acetate content of 30-33%), supplemented with several modifiers, and ...

Claims

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Application Information

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IPC IPC(8): C08J7/06
CPCC08J7/06C08J7/08C08J2323/08
Inventor 程先华梁海孙志永汤皓姜铭仁赖儒丹
Owner ZHEJIANG QIXIN NEW ENERGY TECH
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