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Novel EVA adhesive film

A kind of adhesive film, a new type of technology, applied in the direction of adhesives, film/sheet adhesives, electronic equipment, etc., can solve the problems of battery chip fragmentation, poor creep resistance, poor heat resistance, etc., to ensure service life, High photoelectric conversion efficiency and cost reduction effects

Inactive Publication Date: 2009-01-28
HANGZHOU FIRST APPLIED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its heat resistance is poor, easy to extend and low elasticity, poor creep resistance, easy to cause thermal expansion and contraction, resulting in battery chip fragmentation

Method used

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  • Novel EVA adhesive film
  • Novel EVA adhesive film
  • Novel EVA adhesive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]In terms of parts by mass, 0.1 part of hindered amine light stabilizer bis(1,2,2,6,6-five Methyl-4-piperidinyl) sebacate / methyl-1,2,2,6,6-pentamethyl-4-piperidinyl sebacate compound (mass ratio 1:1, Beijing Tiangang Co., Ltd.), 0.2 parts of antioxidant 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-tris Oxyzine-2,4,6-(1H,3H,5H)-trione / tris(2,4-di-tert-butylphenyl)phosphite compound (mass ratio 1:2, developed by Tianda Tianhai Technology Co., Ltd.), 1.5 parts of crosslinking curing agent o, o-tert-amyl-o-(2-ethylhexyl)-mono-peroxycarbonate (Guangzhou Liben (Julong) Rubber Raw Material Trading Co., Ltd.), 0.4 Parts of tackifier γ-aminopropyltriethoxysilane (Nanjing Lipai Chemical Co., Ltd.), and mix well. The mixture is blended and extruded in an extruder, and the temperature is controlled at 90°C. The extruded product is cast, cooled, cut, and coiled to obtain the EVA film S-1.

Embodiment 2

[0035] In terms of parts by mass, 0.01 part of hindered amine light stabilizer bis(1,2,2,6,6-5 Methyl-4-piperidinyl) sebacate / methyl-1,2,2,6,6-pentamethyl-4-piperidinyl sebacate compound (mass ratio 1:1, Beijing Tiangang Co., Ltd.), 5 parts of antioxidant 1,3,5-tris(4-tert-butyl-3-hydroxyl-2,6-dimethylbenzyl)-1,3,5-tris Oxyzine-2,4,6-(1H,3H,5H)-trione / tris(2,4-di-tert-butylphenyl)phosphite compound (mass ratio 1:2, developed by Tianda Tianhai Technology Co., Ltd.), 1.5 parts of crosslinking curing agent 2,5-dimethyl-2,5-bis(benzoylperoxy)-hexane (Shanghai Yanjia Plastic Chemical Co., Ltd.), 0.4 parts of tackifier γ- Aminopropyltriethoxysilane (Nanjing Lipai Chemical Co., Ltd.), the mixture is blended and extruded in the extruder, the temperature is controlled at 90 ° C, and the extruded product is cast, cooled, cut, and coiled. , that is, to the EVA film S-2.

Embodiment 3

[0037] In parts by mass, 100 parts of VA content is 33% ethylene-vinyl acetate copolymer (U.S. DuPont), add 5 parts of hindered amine light stabilizer bis(1,2,2,6,6-5 Methyl-4-piperidinyl) sebacate / methyl-1,2,2,6,6-pentamethyl-4-piperidinyl sebacate compound (mass ratio 1:1, Beijing Tiangang Co., Ltd.), 0.1 parts of antioxidant 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-tris Oxyzine-2,4,6-(1H,3H,5H)-trione / tris(2,4-di-tert-butylphenyl)phosphite compound (mass ratio 1:2, developed by Tianda Tianhai Technology Co., Ltd.), 1.5 parts of cross-linking curing agent 2,5-dimethylhexane-2,5-di-tert-butyl peroxide (Taixing Reagent Chemical Factory), 0.01 parts of tackifier γ-aminopropyl tri Ethoxysilane (Nanjing Lipai Chemical Co., Ltd.), and mix well. The mixture is blended and extruded in an extruder, and the temperature is controlled at 90°C. The extruded product is cast, cooled, cut, and coiled to obtain the EVA film S-3.

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Abstract

The invention provides an EVA adhesive film without adding uvioresistant absorbent, which is prepared mainly by the raw materials according to the mass ratio as follows: ethylene-vinyl acetate copolymer, 100 parts; peroxide type crosslinking agent 0.1 to 10 parts, phenolic or phosphite type antioxidant 0.05 to 5 parts; and hindered amine light stabilizer, 0.01 to 5 parts. As the ultraviolet absorbent is not used, the EVA adhesive film obtained does not produce ultra-violet cut-off, leads the solar modules to receive UV district light energy, thereby having higher photoelectric conversion efficiency and excellent uvioresistant anti-aging property, and guaranteeing the service life of PV modules.

Description

(1) Technical field [0001] The invention relates to a novel transparent EVA adhesive film used for encapsulating photovoltaic equipment. The adhesive film does not add ultraviolet absorber components and still has excellent ultraviolet aging resistance. (2) Background technology [0002] If the solar cell is directly exposed to the air, its photoelectric conversion efficiency will drop quickly and lose its practical value. Therefore, the research and development of packaging materials for solar cells is very important. In order to achieve the purpose of isolating the atmosphere, the solar cells are encapsulated with an ethylene-vinyl acetate copolymer (EVA) film that is transparent, resistant to light aging, has good adhesive properties, can withstand atmospheric changes, and is protected with the upper and lower layers. The materials are bonded together to form solar cell modules. [0003] EVA resin is a thermoplastic polymer material, which is a polymer with a linear mol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/08C09J7/00
CPCB32B2457/12B32B17/10788B32B17/10678
Inventor 林建华周光大任凤钢杨楚峰
Owner HANGZHOU FIRST APPLIED MATERIAL CO LTD
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