Double-layer solar cell module packaging adhesive film and preparation method thereof

A technology for solar cells and encapsulation films, applied in electrical components, chemical instruments and methods, circuits, etc., to achieve the effects of preventing component PID, superior bonding performance, and good bonding performance

Inactive Publication Date: 2015-02-18

南京红宝丽新材料有限公司

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AI-Extracted Technical Summary

Problems solved by technology

[0004] The present invention overcomes the problem of matching degree between EVA adhesive film and batteries, welding strips, soldering flux,...

Abstract

The invention relates to a double-layer solar cell module packaging adhesive film which is compounded from an EVA (ethylene-vinyl acetate) adhesive film outer layer and an EVA adhesive film inner layer. The EVA adhesive film outer layer is prepared from 100 parts of ethylene-vinyl acetate resin, 0.4-2.0 parts of peroxide crosslinking agent, 0.1-1.5 parts of tackifier, 0.01-0.5 part of antioxidant and 0.05-1.0 part of modifier. The EVA adhesive film inner layer is prepared from 100 parts of ethylene-vinyl acetate resin and 0.4-2.0 parts of peroxide crosslinking agent. The adhesive film is compounded by coextruding the EVA adhesive film outer layer and EVA adhesive film inner layer; and by using the complete formula system, the adhesive film has excellent bonding property and aging resistance, effectively prevents the component from PID (proportion integration differentiation) phenomenon, and has favorable bonding property with glass. The matching degree with the cell, solder strip, soldering flux, silver paste and the like is enhanced.

Application Domain

Non-macromolecular adhesive additivesOther chemical processes +5

Technology Topic

ChemistryAdhesive +12

Image

Examples

Experimental program(4)
Comparison scheme(1)

Example Embodiment

[0037] Example 1

[0038] A double-layer solar cell module encapsulation film, which is composed of an outer layer of EVA film and an inner layer of EVA film;

[0039] The outer layer of the EVA film includes the following raw materials in parts by weight:

[0040]

[0041] The inner layer of the EVA film includes the following raw materials in parts by weight:

[0042] Ethylene-vinyl acetate resin (28% vinyl acetate) 100 parts

[0043] 1.0 part of 2-ethylhexyl tert-butylperoxycarbonate.

[0044] The ethylene-vinyl acetate resin is produced by Singapore TPC Company, trade name: KA-40; the modifier poly1,2-butadiene is produced by Jilin Chemical Company, trade name: JH1300 (number average molecular weight 1300) ; The antioxidant consists of β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate and three (2,4-di-tert-butylphenyl) phosphite It is mixed according to the mass ratio of 1:1.

[0045] The preparation method of the above-mentioned double-layer solar cell module encapsulation film is as follows:

[0046] Mix 20 parts of ethylene-vinyl acetate resin, antioxidant and modifier poly1,2-butadiene in an internal mixer, put the mixed material in a twin-screw extruder, and control the temperature at 120~ 140℃, melt and extrude at 300~350rpm speed, the extrudate is cut into pellets and air-dried to obtain particles; the obtained particles are mixed with 80 parts of ethylene-vinyl acetate resin and tert-butylperoxycarbonate-2-ethyl Hexyl ester and γ-(methacryloxy)propyltrimethoxysilane are mixed to make a mixture, which is used as material A; 100 parts of ethylene-vinyl acetate resin and tert-butylperoxycarbonate-2-ethyl The hexyl ester is mixed to make a mixture, which is used as material B; the above material A and material B are added to the A machine and the B machine in the two-layer co-extrusion equipment, and the extruder is melted and extruded into a film from the die After embossing, cooling and shaping, and winding, the finished double-layer solar cell module packaging film is obtained.

[0047] The rotation speed of the two-layer co-extrusion head and the two extruders are controlled so that the thickness of the outer layer of the EVA film is 40% of the thickness of the two-layer co-extrusion solar cell module encapsulation film, and the encapsulation film thickness is 0.4 Mm.

Example Embodiment

[0048] Example 2

[0049] A double-layer solar cell module encapsulation film, which is composed of an outer layer of EVA film and an inner layer of EVA film;

[0050] The outer layer of the EVA film includes the following raw materials in parts by weight:

[0051]

[0052] The inner layer of the EVA film includes the following raw materials in parts by weight:

[0053] Ethylene-vinyl acetate resin (28% vinyl acetate) 100 parts

[0054] 1.0 part of 2-ethylhexyl tert-butylperoxycarbonate.

[0055] The ethylene-vinyl acetate resin is produced by Singapore TPC Company, trade name: KA-40; the modifier poly1,2-butadiene is produced by Jilin Chemical Company, trade name: JH1300 (number average molecular weight 1300) ; The antioxidant consists of β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate and three (2,4-di-tert-butylphenyl) phosphite It is mixed according to the mass ratio of 1:1.

[0056] The preparation method of the above-mentioned double-layer solar cell module encapsulation film is as follows:

[0057] Mix 8 parts of ethylene-vinyl acetate resin, antioxidant and modifier poly1,2-butadiene in an internal mixer, put the mixed material in a twin-screw extruder, and control the temperature at 120~ 140°C, melt and extrude at 300-350rpm speed, the extrudate is cut into pellets and air-dried to obtain particles; the obtained particles are combined with 92 parts of ethylene-vinyl acetate resin and tert-butylperoxycarbonate-2-ethyl Hexyl ester and γ-(methacryloyloxy)propyltrimethoxysilane are mixed to make a mixture, as material A; 100 parts of ethylene-vinyl acetate resin and tert-butylperoxycarbonate-2-ethyl The hexyl ester is mixed to make a mixture, which is used as material B; the above material A and material B are added to the A machine and the B machine in the two-layer co-extrusion equipment, and the extruder is melted and extruded into a film from the die After embossing, cooling and shaping, and winding, the finished double-layer solar cell module packaging film is obtained.

[0058] The rotation speed of the two-layer co-extrusion head and the two extruders are controlled so that the thickness of the outer layer of the EVA film is 60% of the thickness of the two-layer co-extrusion solar cell module encapsulation film, and the encapsulation film thickness is 0.4 Mm.

Example Embodiment

[0059] Example 3

[0060] A double-layer solar cell module encapsulation film, which is composed of an outer layer of EVA film and an inner layer of EVA film;

[0061] The outer layer of the EVA film includes the following raw materials in parts by weight:

[0062]

[0063] The inner layer of the EVA film includes the following raw materials in parts by weight:

[0064] Ethylene-vinyl acetate resin (28% vinyl acetate) 100 parts

[0065] 1.1 parts of 2-ethylhexyl tert-butylperoxycarbonate.

[0066] The ethylene-vinyl acetate resin is produced by Singapore TPC Company, trade name: KA-40; the modifier polyisoprene is produced by Puyang Linshi New Chemical Materials Co., Ltd., trade name: IR-550 ( Number average molecular weight 4700); the antioxidant is composed of β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate n-octadecyl alcohol ester and tris(2,4-di-tert-butylbenzene Base) phosphite is mixed at a mass ratio of 1:1.

[0067] The preparation method of the above-mentioned double-layer solar cell module encapsulation film is as follows:

[0068] Mix 30 parts of ethylene-vinyl acetate resin, antioxidant and modifier poly1,2-butadiene in an internal mixer, put the mixed material in a twin-screw extruder, and control the temperature at 120~ 140℃, melt and extrude at 300~350rpm speed, the extrudate is cut into pellets and air-dried to obtain particles; the obtained particles are mixed with 70 parts of ethylene-vinyl acetate resin and tert-butylperoxycarbonate-2-ethyl Hexyl ester and γ-(methacryloyloxy)propyltrimethoxysilane are mixed to make a mixture, as material A; 100 parts of ethylene-vinyl acetate resin and tert-butylperoxycarbonate-2-ethyl The hexyl ester is mixed to make a mixture, which is used as material B; the above material A and material B are added to the A machine and the B machine in the two-layer co-extrusion equipment, and the extruder is melted and extruded into a film from the die After embossing, cooling and shaping, and winding, the finished double-layer solar cell module packaging film is obtained.

[0069] The rotation speed of the two-layer co-extrusion head and the two extruders are controlled so that the thickness of the outer layer of the EVA film is 80% of the thickness of the two-layer co-extrusion solar cell module encapsulation film, and the resulting encapsulation film thickness is 0.4 Mm.

PUM

Property	Measurement	Unit
Thickness	0.4	mm

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Excellent bonding performance

Improved glue and PET base material co-granulation type protective film and manufacturing method thereof

PendingCN111117502AEasy to prepareExcellent bonding performance

Owner:TECH SUN INT KUNSHAN

Double-layer solar cell module packaging adhesive film and preparation method thereof

A technology for solar cells and encapsulation films, applied in electrical components, chemical instruments and methods, circuits, etc., to achieve the effects of preventing component PID, superior bonding performance, and good bonding performance

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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