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

High-strength hydrophobic high-reliability packaging adhesive film and preparation method thereof

An encapsulating film, high-strength technology, used in adhesives, film/sheet adhesives, non-polymer adhesive additives, etc., can solve problems such as battery corrosion, battery damage, and poor water vapor barrier ability.

Pending Publication Date: 2021-09-10
CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the particularity of the structure of the double-sided battery, the aluminum oxide passivation technology on the back makes it more sensitive to water vapor and has more power attenuation methods. Therefore, how to improve the water vapor barrier performance of the double-sided battery packaging film , it becomes more important to reduce the influence of water vapor on the passivation layer of the cell
[0003] In addition, with the formulation of new IEC standards in 2021, the PID test conditions of double-sided battery packaging components have increased the requirements for light recovery. From the current research, it has been found that with the addition of light conditions, EVA film packaging can also meet the requirements of the new IEC standard. For the anti-PID requirements of double-sided modules, but compared with POE materials, EVA materials have poor water vapor barrier ability and are prone to corrosion of batteries and formation of metal ions under high temperature and high humidity conditions, resulting in damage to battery P-N Junction damage, resulting in a substantial drop in component power

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-strength hydrophobic high-reliability packaging adhesive film and preparation method thereof
  • High-strength hydrophobic high-reliability packaging adhesive film and preparation method thereof
  • High-strength hydrophobic high-reliability packaging adhesive film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0050] A preparation method of a high-strength hydrophobic and high-reliability encapsulation adhesive film, comprising the following steps:

[0051] Step 1: Preparation of transparent high-strength hydrophobic layer 2: Add the copolymerized PVB resin, fluorine compound modified resin, light stabilizer, antioxidant, cross-linking agent and silane coupling agent into the mixer according to the proportion for dispersion and mixing, and then Add into the extruder to melt extrude the high-strength hydrophobic layer 2 with arc structure;

[0052]Step 2: Composite water-absorbing adhesive layer and high-strength hydrophobic layer 2 Preparation of functional film: According to EMA resin, polyolefin resin, polypropyl ether resin, hydroxypropylated modified fiber mixed in proportion and then cast and coated to the shown The arc structure surface of the high-strength hydrophobic layer 2 forms a two-layer composite functional film, and the cast coating temperature is 60-90°C;

[0053] S...

Embodiment 1

[0059] 90% copolymerized PVB resin (density at 1.05%, softening temperature at 55°C), 4% 2-trifluoromethyl-2-acrylic resin, 4% heptadecafluorodecyl triethoxysilane, 0.1% butanediol Polymer complex of acid and 4-hydroxy-2,2,6,6-tetramethyl-1-pyridineethanol and 2-hydroxy-4-n-octyloxybenzophenone complex, 0.1% triglyceride bis-3 - Complex of (3-tert-butyl-4-hydroxy-5-tolylphenyl) acrylate and tris(2,4-di-tert-butylphenyl) phosphite, 0.05% 2-ethylhexyl peroxide tert-Amyl Carbonate, 0.05% 2-Ethylhexyl Peroxide tert-Butyl Carbonate, 0.25% Trimethylolpropane Trimethacrylate and 0.25% Diethylene Glycol Dimethacrylate, 0.3% Vinyl Triple Peroxide Oxy-tert-butylsilane is added to the mixer for dispersion and mixing, and then added to the extruder. The temperature of each area of ​​the die head of the extruder is set at 120-150°C to melt and extrude the high-strength Hydrophobic layer: 50% EMA resin (acrylate content is 15%, melting point is 55°C, melting index is 3g / 10min), 8% polyviny...

Embodiment 2

[0061] 86% copolymerized PVB resin (density at 1.05%, softening temperature at 55°C), 5% heptadecafluorodecyl triethoxysilane, 5% polydodecafluoroheptyl methacrylate, 0.8% succinic acid and 4-Hydroxy-2,2,6,6-tetramethyl-1-pyridineethanol polymer complex with 2-hydroxy-4-n-octyloxybenzophenone, 1.5% triglycerol bis-3-(3 Complex of -tert-butyl-4-hydroxy-5-tolylphenyl) acrylate and tris(2,4-di-tert-butylphenyl) phosphite, 0.55% 1,1-bis(tert-butyl peroxide base)-3,3,5-trimethylcyclohexane, 0.55% n-butyl 4,4-di(tert-amylperoxy)pentanoate, 0.5% triallyl cyanurate, 0.05% γ-mercaptopropyl trimethoxysilane, 0.05% γ-glycidyl etheroxypropyl trimethoxysilane is added to the mixer for dispersion mixing, and then added to the extruder, the temperature of each area of ​​the extruder die Set at 120-150°C to melt-extrude a high-strength hydrophobic layer with a circular arc structure; 55% EMA resin (acrylate content is 15%, melting point is 55°C, melt index is 3 / 10min), 8% Polyvinyl alcohol ...

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 packaging materials for photovoltaic modules, and provides a high-strength hydrophobic high-reliability packaging adhesive film. The high-strength hydrophobic high-reliability packaging adhesive film comprises an EVA adhesive film layer, a high-strength hydrophobic layer, a water absorption bonding layer and a polyolefin adhesive film layer which are sequentially arranged from top to bottom. Transverse and longitudinal grooves are formed in the upper surface of the EVA adhesive film layer and the lower surface of the polyolefin adhesive film layer and form #-shaped pattern surfaces; a plurality of regular first arc structures are arranged on the lower surface of the high-strength hydrophobic layer; and a second arc structure matched with the first arc structure is arranged on the upper surface of the water absorption bonding layer. The invention further provides a preparation method of the high-strength hydrophobic high-reliability packaging adhesive film. The front surfaces of the composite high-strength hydrophobic layer and the water absorption bonding layer functional film are compounded with the transparent EVA adhesive film, the back surfaces are compounded with a transparent polyolefin film, and then the upper surface and the lower surface are subjected to #-shaped embossing and rolling. The packaging adhesive film is good in water blocking effect and high in tensile strength, the mechanical performance of a packaging assembly can be effectively improved, and the lightweight design of the packaging assembly is promoted.

Description

technical field [0001] The present invention relates to the technical field of encapsulation materials for photovoltaic modules, and more particularly, to a high-strength hydrophobic and high-reliability encapsulation adhesive film and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of battery-side technology, there are more and more types of double-sided battery technology. At the same time, the front cell efficiency of double-sided battery is higher than that of ordinary single-sided battery. Therefore, the current package of double-sided battery has basically Replaces the original single-sided battery assembly. However, due to the particularity of the structure of the double-sided battery, its backside alumina passivation technology makes it more sensitive to water vapor and has more ways of power attenuation. Therefore, how to improve the water vapor barrier performance of the double-sided battery packaging film , ...

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 Applications(China)
IPC IPC(8): C09J7/24C09J7/30C09J123/08C09J129/04C09J171/02C09J101/28C09J4/06C09J4/02C09J11/06H01L31/048
CPCC09J7/24C09J7/30C09J123/0869C09J4/06C09J11/06H01L31/048H01L31/0481C09J2301/208C09J2203/326C09J2203/33C08L29/04C08L71/02C08L1/284Y02E10/50
Inventor 张刚吕松黄宝玉季志超徐炜琴杨求平吴斌吴丰华刘俊陈书亮
Owner CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
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