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Novel solar cell packaging adhesive film

A technology for solar cells and encapsulation films, applied in circuits, adhesives, photovoltaic power generation, etc., can solve problems such as corrosion of metal electrodes of cells, damage to solar cell modules, film yellowing, etc., and achieve excellent resistance to yellowing. Simple process and the effect of reducing overall cost

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

AI Technical Summary

Problems solved by technology

EVA film is a better sealing material, but it has several fatal disadvantages when used in solar cell packaging: 1. EVA is cross-linked during the packaging process, so when the packaging is flawed, expensive solar cells will be scrapped , In addition, when a small problem occurs during the use of solar modules, it cannot be repaired
2. EVA material is easy to degrade under the action of light and heat to produce acidic substances, which will corrode the metal electrodes in the battery sheet, and may cause short circuit or open circuit, thus damaging the solar cell module
3. Due to the degradation of EVA materials, C=C double bonds will be produced, which will make the film yellow. There are data that show that the yellow film will greatly reduce the photoelectric conversion efficiency of solar cells.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In 100 parts by mass of a sodium ion-type ethylene-methacrylic acid ionomer (DuPont surlyn8150) with a melting point of 84°C and a melt index of 4.5 g / 10 min, add 0.1 part of the main antioxidant 3,5-ditert Butyl-4-hydroxyphenylpropionate octadecyl (Taiwan Changchun AO-50), 0.05 parts of auxiliary antioxidant tris (2,4-di-tert-butylphenyl) phosphite (Taiwan Changchun 2112), 0.2 Parts of UV absorber dihydroxy-4-methoxybenzophenone (Nanjing Hualiming UV-9), 0.05 parts of light stabilizer 2-(2'-hydroxyl-5'-methylphenyl) - Benzotriazole (Taiwan Changchun LA-32), 1.5 parts of silane coupling agent γ-aminopropyltriethoxysilane (Dow Corning Z6011) are mixed evenly, put into the twin-screw casting machine, and the processing temperature is 150°C, plasticized extrusion, stretching, traction, and winding to make an ethylene-methacrylic acid ionomer film with a thickness of 0.76mm.

Embodiment 2

[0027] In 100 parts by mass of sodium ion-type ethylene-methacrylic acid ionomer (DuPont surlyn 8150) with a melting point of 84°C and a melt index of 4.5 g / 10min, add 1 part of the main antioxidant 3,5-ditert Butyl-4-hydroxyphenylpropionate octadecyl (Taiwan Changchun AO-50), 0.2 parts of auxiliary antioxidant tris (2,4-di-tert-butylphenyl) phosphite (Taiwan Changchun 2112), 0.2 Parts of UV absorber dihydroxy-4-methoxybenzophenone (Nanjing Hualiming UV-9), 0.05 parts of light stabilizer 2-(2'-hydroxyl-5'-methylphenyl) - Benzotriazole (Taiwan Changchun LA-32), 1.5 parts of silane coupling agent γ-aminopropyltriethoxysilane (Dow Corning Z6011) are mixed evenly, put into the twin-screw casting machine, and the processing temperature is 150°C, plasticized extrusion, stretching, traction, and winding to make an ethylene-methacrylic acid ionomer film with a thickness of 0.76mm.

Embodiment 3

[0029]In 100 parts by mass of a sodium ion-type ethylene-methacrylic acid ionomer (DuPont surlyn8150) with a melting point of 84°C and a melt index of 4.5 g / 10min, add 0.5 parts of the main antioxidant 3,5-ditert Butyl-4-hydroxyphenylpropionate octadecyl (Taiwan Changchun AO-50), 0.1 parts of auxiliary antioxidant tris (2,4-di-tert-butylphenyl) phosphite (Taiwan Changchun 2112), 0.2 Parts of UV absorber dihydroxy-4-methoxybenzophenone (Nanjing Hualiming UV-9), 0.05 parts of light stabilizer 2-(2'-hydroxyl-5'-methylphenyl) - Benzotriazole (Taiwan Changchun LA-32), 1.5 parts of silane coupling agent γ-aminopropyltriethoxysilane (Dow Corning Z6011) are mixed evenly, put into the twin-screw casting machine, and the processing temperature is 150°C, plasticized extrusion, stretching, traction, and winding to make an ethylene-methacrylic acid ionomer film with a thickness of 0.76mm.

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Abstract

The invention relates to a novel solar cell packaging adhesive film. The adhesive film is prepared by the following steps of: adding various functional aids into a matrix material of poly(ethylene-co-methacrylic acid)ionomer, premixing, and casting. The adhesive film comprises the following components: 100 parts of poly(ethylene-co-methacrylic acid)ionomer, 0.1 to 1 part of hindered phenol antioxidant, 0.05 to 0.2 part of subphosphate complemental antioxidant, 0.2 to 1.0 part of ultraviolet absorber, 0.05 to 0.2 part of light stabilizer and 0.5 to 1.5 parts of tackifier. Compared with the traditional solar cell packaging material of ethylene vinyl acetate (EVA), the adhesive film is a thermoplastic material, and simple in packaging process, and facilitates repairing defected solar modules in the packaging process or in the using process to improve the utilization rate of precious cells; moreover, the adhesive film also has the characteristics of high transmittance and excellent yellowing resistance, and can make the service life of the solar modules longer.

Description

technical field [0001] The invention relates to a novel solar battery packaging material, which is thermoplastic, has high light transmittance and excellent yellowing resistance. Background technique [0002] In recent years, energy conservation, environmental protection and low-carbon economy have become the goals pursued by all countries, especially emerging energy is the focus of development in all countries. The two goals of my country's "Twelfth Five-Year Plan" energy plan are: by 2010, my country's non-petrochemical energy will account for one The proportion of total energy consumption will reach 15%. By 2020, my country's carbon dioxide emissions per unit of GDP will drop by 40%-45% compared to 2005. Among emerging energy sources, solar energy is a green, non-polluting and inexhaustible energy source, and compared with hydropower, wind power, nuclear power, etc., solar power generation does not have any emissions and noises. Currently, developed countries are using sol...

Claims

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Application Information

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IPC IPC(8): C09J7/00C09J123/08C09J133/02C09J11/06H01L31/048
CPCY02E10/50
Inventor 余鹏李伟博唐舫成汪加胜
Owner GUANGZHOU LUSHAN NEW MATERIALS
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