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Photo-thermal dual-curing polyolefin packaging adhesive film and preparation method thereof

A technology for encapsulating adhesive films and polyolefins, applied to film/sheet without carrier, adhesives, photovoltaic power generation, etc., can solve problems such as poor appearance, achieve good appearance, reduce poor appearance, and good weather resistance

Active Publication Date: 2020-08-14
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of the existing solar cell encapsulation film, such as air bubbles and degumming, and provide a polyolefin encapsulation film with dual curing of light and heat, using ethylene-octene copolymer, Combined with the mixing of difunctional acrylate monomers and trifunctional acrylic monomers, and the use of photoinitiators and thermal initiators, the photothermal dual-curing polyolefin encapsulation film realizes both light and heat. The polyolefin photovoltaic encapsulation adhesive film is obtained by secondary curing. The curing temperature is low. The polyolefin photovoltaic encapsulation adhesive film has good weather resistance and no air bubbles. It will not degumming after long-term use, which can reduce the appearance of thin-film solar cells.

Method used

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  • Photo-thermal dual-curing polyolefin packaging adhesive film and preparation method thereof
  • Photo-thermal dual-curing polyolefin packaging adhesive film and preparation method thereof
  • Photo-thermal dual-curing polyolefin packaging adhesive film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A photothermal dual-curing polyolefin encapsulation film is prepared from the following components calculated in parts by weight:

[0030] 100 parts of ethylene-octene copolymer;

[0031] 0.5 part of benzophenone;

[0032] 0.8 part of tert-butyl peroxycarbonate-2-ethylhexyl;

[0033] 1 part of tripropylene glycol diacrylate;

[0034] 1.5 parts of triisopropyl isocyanurate;

[0035] 0.5 part of vinyl triethoxysilane;

[0036] 0.2 part of a polymer of succinic acid and 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinol.

[0037] Among them, the melt index of the ethylene-octene copolymer is 10 g / 10min.

[0038] The preparation method of the above-mentioned photothermal dual-cured polyolefin encapsulation adhesive film comprises the following steps:

[0039] S1. The ethylene-octene copolymer, benzophenone, t-butyl peroxycarbonate-2-ethylhexyl ester, tripropylene glycol diacrylate, triisopropyl isocyanurate, vinyl Triethoxysilane and succinic acid are premixed with a polymer ...

Embodiment 2

[0043] A photothermal dual-curing polyolefin encapsulation film is prepared from the following components calculated in parts by weight:

[0044] 100 parts of ethylene-octene copolymer;

[0045] 1.0 part of thiophenyl-p-oxazapine;

[0046] 2.0 parts of tert-butyl peroxide 2-ethylhexyl carbonate;

[0047] 1.0 part of neopentyl glycol diacrylate;

[0048] 0.8 part of triallyl isocyanurate;

[0049] 2.0 parts of vinyltrimethoxysilane;

[0050] 0.3 part of bis(2,2,6,6-tetramethyl-4-piperidinol) sebacate.

[0051] Among them, the ethylene-octene copolymer melt index is 14g / 10min.

[0052] The preparation method of the above-mentioned photothermal dual-curing polyolefin encapsulation film is the same as that in Example 1, except that the components in step S1 are replaced, the casting temperature in step S2 is adjusted to 100°C, and step S3 is adjusted to a high temperature of 150°C Cured in an autoclave for 12 min to obtain a photothermally cured polyolefin photovoltaic encap...

Embodiment 3

[0054] A photothermal dual-curing polyolefin encapsulation film is prepared from the following components calculated in parts by weight:

[0055] 100 parts of ethylene-octene copolymer;

[0056] 1.3 parts of methyl benzoylformate;

[0057] 1.4 parts of 2-ethylhexyl tert-butyl peroxyformate;

[0058] 2.5 parts of dipropylene glycol diacrylate;

[0059] 1.2 parts of 1,3,5-tri-2-propenyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione;

[0060] 0.7 part of 3-(methacryloyloxy)propyltrimethoxysilane;

[0061] 0.5 part of 1-(methyl)-9-(1,2,2,6,6-pentamethyl-4-piperidine) sebacic acid ester.

[0062] Among them, the melt index of the ethylene-octene copolymer is 16g / 10min.

[0063] The preparation method of the above-mentioned photothermal dual-curing polyolefin encapsulation film is the same as that of Example 1, the difference is that the components of step S1 are replaced, the casting temperature in step S2 is adjusted to 90 ° C, and step S3 is adjusted to be at 155 ° C. After curing ...

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Abstract

The invention discloses a photo-thermal dual-curing polyolefin packaging adhesive film. The film is prepared from the following components in parts by weight: 100 parts of an ethylene-octene copolymer, 0.5 to 2 parts of a photoinitiator, 0.8 to 2.0 parts of a thermal initiator, 1 to 3 parts of a difunctional acrylate monomer, 0.5 to 1.5 parts of a trifunctional acrylate monomer, 0.5 to 2.0 parts of a tackifying coupling agent and 0.2 to 0.6 part of an antioxidant. According to the invention, the ethylene-octene copolymer is adopted, the mixing of a difunctional acrylate monomer and a trifunctional acrylic acid monomer is combined, meanwhile, the photoinitiator and the thermal initiator are matched for use, so that the polyolefin photovoltaic packaging adhesive film can be prepared throughtwo-time curing of light and heat, the curing temperature is relatively low, the weather resistance is good, bubbles are avoided, the degumming phenomenon cannot occur after long-term use, and the phenomenon of poor appearance of the thin-film solar cell is reduced.

Description

technical field [0001] The invention relates to the technical field of solar cell packaging materials, in particular to a photothermal dual-curing polyolefin packaging adhesive film and a preparation method thereof. Background technique [0002] With the rapid development of my country's photovoltaic power generation industry, the segment represented by solar cells has received more and more attention. At present, silicon solar cells occupy about 90% of the market share of photovoltaic modules. Under the background that the photovoltaic industry is still dominated by crystalline silicon cells, thin-film solar cells have achieved rapid development by virtue of their own unique advantages. Thin-film technology is considered to be a new generation of solar cell technology. Compared with crystalline silicon cells, thin-film solar cells have the advantages of less material consumption, low production energy consumption, and large space for cost reduction. Thin-film solar cells ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02C09J4/06C09J11/06C09J7/10H01L31/048
CPCC09J4/06C09J11/06C09J7/10H01L31/0481Y02E10/50
Inventor 郭森阮文红章明秋
Owner SUN YAT SEN UNIV
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