EVA (ethylene vinyl-acetate copolymer) adhesive film capable of simplifying packaging structure of solar battery

A technology of solar cells and packaging structures, which is applied in circuits, adhesives, photovoltaic power generation, etc., can solve the problems of not simplifying the packaging structure of solar cells, the performance can not fully meet the requirements, and the poor bonding performance with the polyester layer, etc., to improve the photoelectricity Conversion efficiency, good anti-ultraviolet and aging performance, enhanced reflection effect

Active Publication Date: 2011-07-06
GUANGZHOU LUSHAN NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The Chinese patent (application number 200810175302.7) mentions a solar composite back film, which consists of the following five layers: a fluorine-containing layer, an adhesive layer, a polyester layer, an adhesive layer, and a 0.2-1mm thick EVA layer. Cross-linking in the module preparation process also has the function of encapsulating cells, but on the one hand, without adding titanium dioxide, the solar utilization rate of the cells is reduced, and the bonding performance with the polyester layer is poor, requ

Method used

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  • EVA (ethylene vinyl-acetate copolymer) adhesive film capable of simplifying packaging structure of solar battery
  • EVA (ethylene vinyl-acetate copolymer) adhesive film capable of simplifying packaging structure of solar battery
  • EVA (ethylene vinyl-acetate copolymer) adhesive film capable of simplifying packaging structure of solar battery

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Experimental program
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Effect test

Embodiment 1

[0037] 100kg vinyl acetate content is 14%, and melt index is 15g / 10min EVA raw material, add 0.5kg cross-linking agent tert-butyl peroxide 2-ethylhexyl carbonate, 0.5kg compatibilizer glycidyl methacrylate , 0.5kg antioxidant tris(nonylphenyl) phosphite, 0.05kg light stabilizer N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1, 6-hexamethylenediamine, 1kg of rutile titanium dioxide with an average particle size of 30nm, 0.5kg of tackifier triaminopropyltrimethoxysilane, mixed uniformly through a mixer, put into a casting machine, at 80°C, plasticized Chemical extrusion, stretching, traction, and winding to make an EVA film with a thickness of about 0.1mm.

Embodiment 2

[0039] 100kg vinyl acetate content is 14%, and melt index is 15g / 10min EVA raw material, add 1.0kg cross-linking agent tert-butyl peroxide 2-ethylhexyl carbonate, 0.5kg compatibilizer glycidyl methacrylate , 0.5kg antioxidant tris(nonylphenyl) phosphite, 0.05kg light stabilizer N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1, 6-hexamethylenediamine, 10kg of rutile titanium dioxide with an average particle size of 100nm, and 1.5kg of tackifier triaminopropyltrimethoxysilane were mixed uniformly by a mixer, put into a casting machine, and passed through plastic at 80°C. Chemical extrusion, stretching, traction, and winding to make an EVA film with a thickness of about 0.5mm.

Embodiment 3

[0041] It is 14% at 100kg vinyl acetate content, and melt index is the EVA raw material that adds 0.8kg crosslinking agent tert-butyl peroxide 2-ethylhexyl carbonate in the EVA raw material of 15g / 10min, 2kg compatibilizer glycidyl methacrylate, 1kg antioxidant tris(nonylphenyl)phosphite, 0.2kg light stabilizer N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1,6- Hexamethylenediamine, 1kg of rutile titanium dioxide with an average particle size of 1000nm, 0.5kg of tackifier triaminopropyltrimethoxysilane, mixed uniformly by a mixer, put into a casting machine, and plasticized at 80°C Extrude, stretch, pull, and roll to make an EVA film with a thickness of about 0.8mm.

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Abstract

The invention relates to an EVA (ethylene vinyl-acetate copolymer) adhesive film capable of simplifying a packaging structure of a solar battery. The EVA adhesive film is prepared from the following raw materials in parts by weight: 100 parts of EVA, 0.5-1.0 part of crosslinking agent, 0.5-5 parts of compatilizer, 0.5-1 part of antioxidant, 0.05-1 part of light stabilizer, 1-10 parts of titanium dioxide and 0.5-1.5 parts of tackifier. The EVA adhesive film is prepared by the following steps: mixing the EVA with other assistants, carrying out melt extrusion, casting to form a film, and finallyrolling to obtain the finished product. The adhesive film provided by the invention is mainly used between a solar battery component and a back panel; and unlike the common EVA packaging adhesive film and back panel material, the adhesive film provided by the invention can simplify the packaging structure of the solar battery, can effectively lower the cost of the solar battery pack, and is beneficial to the further popularization of the solar battery.

Description

technical field [0001] The invention relates to an EVA adhesive film which can simplify the packaging structure of solar cells. The adhesive film is mainly used between solar cell elements and back plate materials, and is used in the field of solar cell component packaging. Background technique [0002] Solar energy is a green, non-polluting and inexhaustible energy source. At present, solar panels are mainly used to convert it into electrical energy, and then use it for other purposes, such as street lamps, water heaters, electric vehicles, etc. Since solar cells are generally used outdoors and the environment is relatively harsh, they need to be protected. They are usually packaged with a glass plate (front plate), packaging film and back plate. The glass plate (front plate) used is mainly low taconite tempered glass, which is located on the solar cell element and has high light transmittance and excellent weather resistance. [0003] Among them, the function of the adhes...

Claims

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Application Information

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IPC IPC(8): C09J7/00C09J123/08C09J11/04C09J11/06H01L31/048
CPCY02E10/50
Inventor 余鹏李伟博唐舫成汪加胜
Owner GUANGZHOU LUSHAN NEW MATERIALS
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