Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of EVA adhesive film with high water vapor and oxygen barrier property for solar module encapsulation and preparation method thereof

A solar module and oxygen barrier technology, applied in adhesives, electrical components, semiconductor devices, etc., can solve the problems of photoelectric conversion efficiency reduction, delamination, hydrolysis reaction and other problems of photovoltaic modules, and achieve improved damp heat aging performance and good chemical stability , good strength and elasticity

Active Publication Date: 2016-08-17
MING CROWN ADVANCED MATERIAL CO LTD
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The EVA film will degrade during long-term outdoor use, causing aging phenomena such as discoloration, fading, delamination, generation of acetic acid and corrosion of electrodes.
In addition to being irradiated by ultraviolet light, EVA film may also be exposed to harsh environments with high temperature and humidity
EVA exposed to high-temperature and high-humidity environment for a long time will undergo hydrolysis reaction, resulting in bubbles, yellowing, delamination and other phenomena, resulting in a significant decrease in the photoelectric conversion efficiency of photovoltaic modules

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of EVA adhesive film with high water vapor oxygen barrier property for solar module encapsulation, the surface of described EVA adhesive film is provided with concavo-convex grid structure, the thickness of EVA adhesive film is 0.1mm, and EVA adhesive film comprises the raw material of following weight portion:

[0039] EVA resin 80 parts

[0040] Oxygen barrier agent 5 parts

[0041] 5 parts of water vapor barrier

[0042] 1 part of cross-linking agent

[0043] 1 part coupling agent

[0044] Antioxidant 0.5 parts.

[0045] The EVA resin has a melting point of 98°C and a density of 0.92g / cm 3 1. Ethylene-vinyl acetate copolymer with a vinyl acetate content of 10%.

[0046] The oxygen barrier agent is an ethylene-vinyl alcohol copolymer with an ethylene content of 40% and a saponification degree of over 90%.

[0047] The water vapor barrier is a mixture composed of polymethacrylic acid, trifluorooctyl methacrylate and heptadecafluorodecyltriethoxysilane in a...

Embodiment 2

[0057] A kind of EVA adhesive film with high water vapor oxygen barrier property for solar module encapsulation, the surface of described EVA adhesive film is provided with concavo-convex grid structure, the thickness of EVA adhesive film is 0.3mm, EVA adhesive film comprises the raw material of following weight portion:

[0058] EVA resin 90 parts

[0059] Oxygen barrier 6 parts

[0060] 6 parts water vapor barrier

[0061] Cross-linking agent 2 parts

[0062] 2 parts of coupling agent

[0063] Antioxidant 0.7 part.

[0064] The EVA resin has a melting point of 98°C and a density of 0.93g / cm 3 1. Ethylene-vinyl acetate copolymer with a vinyl acetate content of 12%.

[0065] The oxygen barrier agent is an ethylene-vinyl alcohol copolymer with an ethylene content of 45% and a saponification degree of over 90%.

[0066] The water vapor barrier is a mixture composed of polymethacrylic acid, trifluorooctyl methacrylate and heptadecafluorodecyltriethoxysilane in a weight rati...

Embodiment 3

[0076] A kind of EVA adhesive film with high water vapor oxygen barrier property for solar module encapsulation, the surface of described EVA adhesive film is provided with concavo-convex grid structure, the thickness of EVA adhesive film is 0.5mm, EVA adhesive film comprises the raw material of following weight portion:

[0077] EVA resin 100 parts

[0078] Oxygen barrier agent 7 parts

[0079] Water vapor barrier agent 7 parts

[0080] 3 parts of cross-linking agent

[0081] 3 parts of coupling agent

[0082] Antioxidant 1 part.

[0083] The EVA resin has a melting point of 99°C and a density of 0.95g / cm 3 1. Ethylene-vinyl acetate copolymer with a vinyl acetate content of 15%.

[0084] The oxygen barrier agent is an ethylene-vinyl alcohol copolymer with an ethylene content of 50% and a saponification degree of more than 90%.

[0085] The water vapor barrier is a mixture composed of polymethacrylic acid, trifluorooctyl methacrylate, and heptadecafluorodecyltriethoxysil...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of solar module packaging, in particular to a high-moisture and oxygen barrier property EVA adhesive film for solar module packaging and a preparing method of the high-moisture and oxygen barrier property EVA adhesive film. A concave-convex grid structure is arranged on the surface of the EVA adhesive film, the thickness of the EVA adhesive film ranges from 0.1 mm to 1 mm, and the EVA adhesive film comprises, by weight, 80-120 parts of EVA resin, 5-10 parts of oxygen barrier agent, 5-10 parts of moisture barrier agent, 1-5 parts of cross-linking agent, 1-5 parts of coupling reagent and 0.5-1.5 parts of antioxygen. The moisture barrier agent and the oxygen barrier agent are adopted in the EVA adhesive film, the high moisture barrier property and the high oxygen barrier property are achieved, and the damp-heat ageing resisting performance of the EVA adhesive film can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of solar module packaging, in particular to an EVA adhesive film with high water vapor and oxygen barrier properties for solar module packaging and a preparation method thereof. Background technique [0002] The EVA adhesive film for solar cell encapsulation is based on EVA resin, added with various modification additives, and melted and extruded by a screw extruder. It is a thermosetting adhesive film with the characteristics of anti-ultraviolet, anti-aging and yellowing, and high peel strength. . It is mainly used for the packaging of solar cell components, which can improve the light transmittance of the cell components, prevent water vapor penetration, high and low temperature resistance, and anti-ultraviolet aging, etc., to ensure the long-term stable and efficient use of the cell components. [0003] The EVA film will degrade during long-term outdoor use, and there will be aging phenomena such as disc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/00C09J123/08C09J11/08C09J11/06H01L31/048
CPCY02E10/50
Inventor 闫洪嘉李萍
Owner MING CROWN ADVANCED MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com