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Silane grafted POE adhesive film for photovoltaic encapsulation and preparation method

A technology of silane grafting and adhesive film, which is applied in the direction of grafting polymer adhesives, adhesives, film/sheet adhesives, etc., which can solve the problem of poor thermal creep resistance and inability to apply traditional crystalline silicon photovoltaic modules, etc. Problems, achieve the effect of preventing delamination, shortening the lamination time of components, and increasing the melting temperature

Active Publication Date: 2018-11-06
CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing non-crosslinked POE film on traditional crystalline silicon photovoltaic modules can solve the problem of air bubbles, it is still prone to poor thermal creep resistance during the aging process, and cannot be applied to traditional crystalline silicon photovoltaic modules

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Put 95 parts of POE resin (melt flow rate is 16g / 10min, light transmittance> 91%, volume resistivity> 1.0×10 15 , Melting temperature 76℃), 0.3 parts of vinyl trimethoxy silane, 0.05 parts of dicumyl peroxide, 10 parts of polyurethane elastomer resin (transmittance> 90%, volume resistivity> 1.0×10 15 , The melting temperature is 145℃), 0.1 part of tripropenyl isocyanurate, 0.5 part of POE grafted maleic anhydride, mixed uniformly, poured into a twin-screw extruder, 160-220℃ to prepare graft masterbatch, Standby; (2) Put 5 parts of POE resin (melt flow rate is 16g / 10min, light transmittance> 91%, volume resistivity> 1.0×10 15 , Melting temperature 76℃), 0.1 part of 3,5-di-tert-butyl-4-hydroxy-benzoic acid cetyl ester, 0.1 part of 2-benzotriazol-2-yl-4,6-di-tert Butylphenol and 0.1 part of β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate are mixed uniformly, poured into a twin-screw extruder, and prepared at 160-220℃ Auxiliary masterbatch, ready for use; (3)...

Embodiment 2

[0033] (1) Put 95 parts of POE resin (melt flow rate is 16g / 10min, light transmittance> 91%, volume resistivity> 1.0×10 15 , The melting temperature is 76℃), 0.5 parts of γ-methacryloxypropyl trimethoxysilane, 0.5 parts of vinyl trimethoxysilane, 0.1 parts of tert-butyl peroxide-2-ethylhexyl carbonate, 20 Parts of styrene-ethylene-butylene-styrene block copolymer elastomer resin (transmittance>90%, volume resistivity>1.0×10 15 , The melting temperature is 155℃), 0.1 part of tripropenyl isocyanurate, 0.1 part of divinylbenzene, 1.5 part of POE grafted maleic anhydride, mixed uniformly, poured into the twin-screw extruder, 160-220℃ Prepare the graft masterbatch for later use; (2) Put 5 parts of POE resin (melt flow rate is 16g / 10min, light transmittance>91%, volume resistivity>1.0×10 15 , The melting temperature is 76℃), 0.05 parts of bis(2,2,6,6-tetramethylpiperidinyl) sebacate, 0.05 parts of 2-hydroxy-4-n-octyloxybenzophenone, 0.6 One part of four [β-(3,5-di-tert-butyl-4-hydroxy...

Embodiment 3

[0036] (1) Mix 95 parts of POE resin (melt flow rate is 3g / 10min, light transmittance>85%, volume resistivity>1.0×10 14 , The melting temperature is 97℃), 3 parts of vinyl triethoxy silane, 0.25 parts of di-tert-butyl diisopropyl benzene, 5 parts of polyurethane elastomer resin (light transmittance> 90%, volume resistivity> 1.0×10 15 , Melting temperature is 145℃), 5 parts of styrene-ethylene-butylene-styrene block copolymer elastomer resin (transmittance>90%, volume resistivity>1.0×10 15 , Melting temperature is 155℃), 0.2 parts of trimethylolpropane triacrylate, 2.5 parts of POE grafted maleic anhydride, 1.5 parts of POE grafted glycidyl methacrylate, mixed uniformly, and poured into the twin-screw extruder , 160-220℃ to prepare the grafting masterbatch, ready for use; (2) 5 parts of POE resin (melt flow rate is 3g / 10min, light transmittance>85%, volume resistivity>1.0×10 14 , The melting temperature is 97℃), 0.3 parts of bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl) sebaca...

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Abstract

The invention belongs to the field of photovoltaic encapsulation adhesive films and preparation thereof, and particularly relates to a silane grafted POE photovoltaic encapsulation adhesive film and apreparation method thereof. The silane grafted POE adhesive film comprises the following components in parts by mass: 100 parts of ethylene-octene copolymer resin, 0.3-3 parts of silane grafted monomer, 0.05-0.25 parts of an initiator, 5-20 parts of modified resin, 0.05-0.25 parts of co-grafted monomer, 0.5-4 parts of a compatilizer, 0.05-0.3 parts of an ultraviolet light stabilizing agent, 0.05-0.3 parts of an ultraviolet absorber and 0.1-0.6 part of an antioxidant. The prepared adhesive film for POE photovoltaic encapsulation can be simultaneously applied to a flexible thin-film photovoltaic assembly and a traditional crystalline silicon photovoltaic assembly, the problems of air bubbles, no-melting and poor thermal creep resistance in an ageing process can be solved, the laminating time of the assemblies is shortened, the packaging defective percentage is reduced, the production efficiency of the assemblies is improved, and the production cost is reduced.

Description

Technical field [0001] The invention belongs to the field of photovoltaic encapsulation film and its preparation, and particularly relates to a silane grafted POE photovoltaic encapsulation film and a preparation method thereof. Background technique [0002] The traditional packaging film for solar photovoltaic modules is mainly ethylene-vinyl acetate copolymer (EVA) film, and the VA (vinyl acetate) content in the film needs to be greater than 25%. During long-term outdoor use of Taineng photovoltaic modules, due to the effects of water vapor penetration and photothermal aging, the VA segment in the EVA molecular segment will be degraded, releasing acetic acid, causing bubbles, delamination and yellowing. The light transmittance and volume resistivity of the adhesive film are reduced, and the electric potential on the cell is reduced, thereby reducing the power generation efficiency of the module and shortening the service life of the module. [0003] Polyolefin elastomer (POE) do...

Claims

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Application Information

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IPC IPC(8): C09J7/10C09J7/30C09J151/06C09J11/06C09J11/08C08F291/12C08F230/08C08F226/06C08J3/22
CPCC08F255/02C08F283/006C08F285/00C08J3/226C08J2351/06C08J2423/08C08J2451/00C08J2451/08C08K2201/014C08L2205/035C09J11/06C09J11/08C09J151/06C09J2203/322C09J2423/04C09J2451/00C09J7/10C09J7/30C09J2301/312C09J2301/408C09J2301/414C08F230/08C08F226/06C08L51/08C08L51/00C08L23/0815C08K5/1345C08K5/5475
Inventor 吕松金旭张刚
Owner CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
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