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A kind of eva encapsulation adhesive film with light conversion effect

A technology for encapsulating adhesive films and effects, applied in adhesives, photovoltaic power generation, film/sheet adhesives, etc., can solve the problems of poor UV aging resistance, etc., and achieve extended service life, good light conversion effect, and UV resistance Effect of Photoaging Performance Improvement

Inactive Publication Date: 2016-01-27
NINGBO HUAFENG PACKAGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the domestic development of EVA film for solar cell packaging has begun to take shape. Its bonding strength, visible light transmittance, and high temperature aging resistance are comparable to foreign products, but domestic products are slightly inferior in terms of UV aging resistance. foreign products

Method used

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  • A kind of eva encapsulation adhesive film with light conversion effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Prepare EVA encapsulating adhesive film A, be made up of the raw material of following mass parts:

[0024] ethylene vinyl acetate copolymer 100 parts,

[0025] 0.8 parts of tert-butyl peroxy 2-ethylhexyl carbonate,

[0026] 0.4 parts of three (2,4-di-tert-butylphenyl) phosphite,

[0027] 0.5 parts of 4,4'-dihydroxybenzophenone,

[0028] Sm(TTA)2(AA)Phen0.5 parts.

[0029] The above-mentioned raw materials are mixed evenly in proportion, and then the mixture is poured into an extruder for blending and extrusion, and the extruded product is cast, cooled, shaped in an oven, drawn, and coiled to obtain the EVA packaging film A.

Embodiment 2

[0031] Prepare EVA encapsulating adhesive film B, be made up of the raw material of following mass parts:

[0032] ethylene vinyl acetate copolymer 100 parts,

[0033] 0.6 parts of 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane,

[0034] 0.3 parts of three (2,4-di-tert-butylphenyl) phosphite,

[0035] 1 part of 4,4'-dihydroxybenzophenone,

[0036] Sm(TTA)2(AA)Phen1.5 parts.

[0037] Mix the above raw materials uniformly in proportion, then pour the mixture into an extruder for blending and extrusion, and the extruded product is cast, cooled, shaped in an oven, drawn, and coiled to obtain the EVA packaging film B.

Embodiment 3

[0039] The EVA encapsulation adhesive film that embodiment 1 and 2 is made carries out following performance test:

[0040] 1. Performance test of UV aging:

[0041] According to the requirements of the International Electrotechnical Commission standard IEC61345, the ultraviolet radiation aging test was carried out. The test conditions are:

[0042] Sample surface temperature 65±5℃, test time 3000h

[0043] The wavelength is in the range of 280nm to 400nm, and the irradiation intensity is 1.5Kwh / m 2

[0044] The yellowing index (ΔYI) is analyzed according to GB2409-80 "Test Method for Yellowness Index of Plastics".

[0045] 2. Humidity and heat aging resistance

[0046] Damp heat aging test according to GB / T2423.3 test method

[0047] Test conditions: temperature 90°C, relative humidity 85%, time 3000h

[0048] The yellowing index (ΔYI) is analyzed according to GB2409-80 "Test Method for Yellowness Index of Plastics".

[0049] The results are shown in the table below: ...

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Abstract

The invention relates to an EVA (Ethylene-Vinyl Acetate) packaging adhesive film with a light conversion effect. The EVA packaging adhesive film is composed of the following raw materials in parts by mass: 100 parts of EVA polymer, 0.6-0.8 part of cross-linking curing agent, 0.3-0.4 part of antioxidant, 0.5-1 part of ultraviolet absorber and a light conversion agent, wherein the mass ratio of the light conversion agent to the ultraviolet absorber is (1-1.5):1. The EVA packaging adhesive film has the good light conversion effect, and the ultraviolet aging resistance is effectively improved.

Description

technical field [0001] The invention belongs to the field of adhesive films for solar cells, and in particular relates to an EVA encapsulating adhesive film with light conversion effect. Background technique [0002] The problems of global environmental pollution and energy shortage are becoming more and more serious, and solar cell power generation is one of the most effective ways to solve these two problems. Solar power generation uses the quantum effect principle of semiconductors such as silicon to directly convert the visible light of the sun into electrical energy. However, if the silicon wafer is directly exposed to the atmosphere, its photoelectric conversion performance is easily attenuated and loses its practical value. Therefore, a new type of encapsulation material must be used to protect the silicon wafer accordingly. [0003] First of all, the packaging material must have a high enough light transmittance to ensure high photoelectric conversion efficiency of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/00C09J123/08C09J11/06H01L31/048H01L31/055
CPCY02E10/52
Inventor 陈亦锋鲁听陈红央
Owner NINGBO HUAFENG PACKAGE
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