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EVA (Ethylene Vinyl-Acetate) glue film special for packaging double glass solar assembly and preparation method thereof

A solar module and film technology, applied in adhesives, electrical components, semiconductor devices, etc., can solve problems such as module defects and safety hazards, and achieve the effect of reducing fluidity, production efficiency, and product cost.

Active Publication Date: 2013-06-26
JIANGSU LUSHAN PHOTOVOLTAIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects of the prior art, the purpose of the present invention is to provide a special EVA adhesive film for double-glass solar module packaging, which can not only solve the component defects and potential safety hazards of conventional EVA film-encapsulated double-glass modules, but also replace poly Vinyl butyral (PVB) film to simplify the production process, improve production efficiency and reduce cost of packaging materials

Method used

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  • EVA (Ethylene Vinyl-Acetate) glue film special for packaging double glass solar assembly and preparation method thereof
  • EVA (Ethylene Vinyl-Acetate) glue film special for packaging double glass solar assembly and preparation method thereof
  • EVA (Ethylene Vinyl-Acetate) glue film special for packaging double glass solar assembly and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A special EVA adhesive film for encapsulating double-glass solar modules, prepared by the following method:

[0028] 1) Add 10 parts of ethylene-octene copolymer (POE0210 produced by ExxonMobil, USA) to 80 parts by mass of EVA raw material with a vinyl acetate content of 25% and a melt index of 15g / 10min, and then add 10 parts Polyethylene (SK FT411), 0.6 parts of tert-butyl peroxy 2-ethylhexyl carbonate, 0.5 parts of vinyltrimethoxysilane are mixed evenly, and the grafting pretreatment reaction is extruded through the extruder, The temperature is 155°C, and the extruded product is cooled, pulled, and pelletized into pellet masterbatch.

[0029] 2) Add 1.5 parts of bis(3,5-tertiary butyl-4-hydroxyphenyl) sulfide, 0.1 parts of 2,4-dihydroxybenzophenone, 0.3 parts of bis-2,2 sebacic acid , 6,6-Tetramethylpiperidinol ester is added to the above masterbatch, mixed evenly, put into the casting machine, and plasticized, extruded, stretched, drawn, and rolled to make EVA glue...

Embodiment 2

[0031] A special EVA adhesive film for encapsulating double-glass solar modules, prepared by the following method:

[0032] 1) Add 5 parts of ethylene-octene copolymer (produced by ExxonMobil, USA, product model POE0210) to 90 parts by mass of EVA raw materials with a vinyl acetate content of 25% and a melt index of 18g / 10min, and then Add 5 parts of polyethylene (manufactured by SK, product model FT411), 1.0 part of dicumyl peroxide, and 0.7 parts of vinyltriethoxysilane, mix well, and carry out grafting pretreatment reaction through the extruder Extrusion, the temperature is 160°C, the extrudate is cooled, drawn, and pelletized into pellet masterbatch.

[0033] 2) Add 0.1 part of 2,6-tertiary butyl-4-methylphenol, 0.4 part of 2-(2-hydroxy-5-methylphenyl)benzotriazole, 0.05 part of sebacic acid bis -2,2,6,6-Tetramethylpiperidinol ester is added to the above masterbatch, mixed evenly, put into the casting machine, and plasticized, extruded, stretched, drawn, and rolled to mak...

Embodiment 3

[0035] A special EVA adhesive film for encapsulating double-glass solar modules, prepared by the following method:

[0036] 1) Add 20 parts of ethylene-octene copolymer (produced by ExxonMobil, USA, product model POE0210) to 70 parts by mass of EVA raw material with a vinyl acetate content of 34% and a melt index of 30g / 10min, and then Add 10 parts of polyethylene (manufactured by SK Company, the product model is FT411), 1.0 parts of 2,5-dimethyl-2,5-bis-(tert-butylperoxy)hexane, 1.5 parts of vinyltrimethoxy After the silane is mixed evenly, it is extruded through an extruder for grafting pretreatment reaction at a temperature of 165°C, and the extruded product is cooled, drawn, and pelletized into a master batch of pellets.

[0037] 2) Add 0.8 parts of bis(3,5-tertiary butyl-4-hydroxyphenyl)sulfide, 1.0 parts of 2,4-dihydroxybenzophenone, 0.3 parts of N,N,-bis(2, Add 2,6,6-tetramethyl-4-piperidinyl)-1,6-hexanediamine into the above masterbatch, mix evenly, put it into the cast...

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Abstract

The invention discloses an EVA (Ethylene Vinyl-Acetate) glue film special for packaging a double glass solar assembly and a preparation method thereof. The EVA glue film special for packaging the double glass solar assembly comprises the following components in percentage by weight as follows: 70-90% of ethylene vinyl-acetate copolymer, 5-20% of ethylene-octylene copolymer, 2-10% of polyethylene, 0.1-1.0% of initiator, 0.1-1.5% of antioxygen, 0.1-1.0% of ultraviolet absorbent, 0.05-1.0% of light stabilizer and 0.5-1.5% of tackifier which are grafted and pretreated and then subjected to tape casting. The glue film provided by the invention has excellent an anti-impact modulus moisture separating effect and lower mobility, and is applied to packaging the double glass solar assembly to avoid deficiencies such as bubbles and displacement of the double glass assembly, so that the performance demand of falling ball impact of the double glass assembly is met. In addition, the preparation method provided by the invention is simple in process, efficient in production and low in energy consumption, and the assembly packaged is quick to cool and the product cost is lowered.

Description

technical field [0001] The invention relates to a special EVA adhesive film for double-glass solar module packaging and a preparation method thereof, which is applied to the preparation of solar cell module packaging adhesive film and the packaging of double-glass solar photovoltaic modules, including thin-film battery double-glass components and crystalline silicon battery double-glass components. Background technique [0002] Building-integrated photovoltaics (BIPV) uses buildings to generate electricity, so it has strict requirements on building safety. Generally, double-glass solar modules with composite layers composed of two pieces of glass and solar cells are used. Double-glass photovoltaic modules are composed of the following parts: (1) The two pieces of glass must be toughened safety glass, and the side facing the light must be ultra-clear glass; (2) Cells: monocrystalline silicon, polycrystalline silicon, and amorphous silicon are all available ; (3) Composite la...

Claims

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Application Information

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IPC IPC(8): C09J7/00C09J123/08C09J123/06C09J11/06H01L31/048
CPCH01L31/0488H01L31/0481Y02E10/50
Inventor 余鹏陈育淳唐舫成汪加胜
Owner JIANGSU LUSHAN PHOTOVOLTAIC TECH
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