CN118222197A - Composite adhesive film for Topcon solar cell and preparation method and application thereof - Google Patents
Composite adhesive film for Topcon solar cell and preparation method and application thereof Download PDFInfo
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- CN118222197A CN118222197A CN202211643532.8A CN202211643532A CN118222197A CN 118222197 A CN118222197 A CN 118222197A CN 202211643532 A CN202211643532 A CN 202211643532A CN 118222197 A CN118222197 A CN 118222197A
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- silane
- acid
- adhesive film
- water
- absorbing
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- 239000002313 adhesive film Substances 0.000 title claims abstract description 72
- 239000002131 composite material Substances 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000012790 adhesive layer Substances 0.000 claims abstract description 67
- 239000010410 layer Substances 0.000 claims abstract description 59
- -1 compound acrylic ester Chemical class 0.000 claims abstract description 53
- 150000004756 silanes Chemical class 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical class [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims abstract description 30
- 239000011347 resin Substances 0.000 claims abstract description 28
- 229920005989 resin Polymers 0.000 claims abstract description 28
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000005977 Ethylene Substances 0.000 claims abstract description 27
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910000077 silane Inorganic materials 0.000 claims abstract description 22
- 238000002834 transmittance Methods 0.000 claims abstract description 11
- 239000011777 magnesium Substances 0.000 claims description 25
- 239000003963 antioxidant agent Substances 0.000 claims description 24
- 230000003078 antioxidant effect Effects 0.000 claims description 24
- 239000003431 cross linking reagent Substances 0.000 claims description 24
- 239000004611 light stabiliser Substances 0.000 claims description 23
- 239000002994 raw material Substances 0.000 claims description 22
- 239000002245 particle Substances 0.000 claims description 19
- WPMYUUITDBHVQZ-UHFFFAOYSA-N 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoic acid Chemical compound CC(C)(C)C1=CC(CCC(O)=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-N 0.000 claims description 11
- 229910020038 Mg6Al2 Inorganic materials 0.000 claims description 10
- 230000035699 permeability Effects 0.000 claims description 10
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 8
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 claims description 7
- FIYMNUNPPYABMU-UHFFFAOYSA-N 2-benzyl-5-chloro-1h-indole Chemical compound C=1C2=CC(Cl)=CC=C2NC=1CC1=CC=CC=C1 FIYMNUNPPYABMU-UHFFFAOYSA-N 0.000 claims description 7
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 7
- HTCRKQHJUYBQTK-UHFFFAOYSA-N 2-ethylhexyl 2-methylbutan-2-yloxy carbonate Chemical compound CCCCC(CC)COC(=O)OOC(C)(C)CC HTCRKQHJUYBQTK-UHFFFAOYSA-N 0.000 claims description 6
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 claims description 6
- NOZAQBYNLKNDRT-UHFFFAOYSA-N [diacetyloxy(ethenyl)silyl] acetate Chemical compound CC(=O)O[Si](OC(C)=O)(OC(C)=O)C=C NOZAQBYNLKNDRT-UHFFFAOYSA-N 0.000 claims description 6
- 229940116351 sebacate Drugs 0.000 claims description 6
- FGHOOJSIEHYJFQ-UHFFFAOYSA-N (2,4-ditert-butylphenyl) dihydrogen phosphite Chemical compound CC(C)(C)C1=CC=C(OP(O)O)C(C(C)(C)C)=C1 FGHOOJSIEHYJFQ-UHFFFAOYSA-N 0.000 claims description 5
- CHEANNSDVJOIBS-MHZLTWQESA-N (3s)-3-cyclopropyl-3-[3-[[3-(5,5-dimethylcyclopenten-1-yl)-4-(2-fluoro-5-methoxyphenyl)phenyl]methoxy]phenyl]propanoic acid Chemical compound COC1=CC=C(F)C(C=2C(=CC(COC=3C=C(C=CC=3)[C@@H](CC(O)=O)C3CC3)=CC=2)C=2C(CCC=2)(C)C)=C1 CHEANNSDVJOIBS-MHZLTWQESA-N 0.000 claims description 5
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 5
- GTELLNMUWNJXMQ-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;prop-2-enoic acid Chemical class OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.CCC(CO)(CO)CO GTELLNMUWNJXMQ-UHFFFAOYSA-N 0.000 claims description 5
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical class CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 5
- VSAWBBYYMBQKIK-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-2,4,6-trimethylphenyl]methyl]-2,6-ditert-butylphenol Chemical compound CC1=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C1CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 VSAWBBYYMBQKIK-UHFFFAOYSA-N 0.000 claims description 5
- UWDMKTDPDJCJOP-UHFFFAOYSA-N 4-hydroxy-2,2,6,6-tetramethylpiperidin-1-ium-4-carboxylate Chemical compound CC1(C)CC(O)(C(O)=O)CC(C)(C)N1 UWDMKTDPDJCJOP-UHFFFAOYSA-N 0.000 claims description 5
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- XRMBQHTWUBGQDN-UHFFFAOYSA-N [2-[2,2-bis(prop-2-enoyloxymethyl)butoxymethyl]-2-(prop-2-enoyloxymethyl)butyl] prop-2-enoate Chemical compound C=CC(=O)OCC(COC(=O)C=C)(CC)COCC(CC)(COC(=O)C=C)COC(=O)C=C XRMBQHTWUBGQDN-UHFFFAOYSA-N 0.000 claims description 5
- VEBCLRKUSAGCDF-UHFFFAOYSA-N ac1mi23b Chemical compound C1C2C3C(COC(=O)C=C)CCC3C1C(COC(=O)C=C)C2 VEBCLRKUSAGCDF-UHFFFAOYSA-N 0.000 claims description 5
- 150000001412 amines Chemical class 0.000 claims description 5
- 238000013329 compounding Methods 0.000 claims description 5
- 125000004386 diacrylate group Chemical group 0.000 claims description 5
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 5
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 5
- 229920001684 low density polyethylene Polymers 0.000 claims description 5
- 239000004702 low-density polyethylene Substances 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 5
- 239000001384 succinic acid Substances 0.000 claims description 5
- TXDNPSYEJHXKMK-UHFFFAOYSA-N sulfanylsilane Chemical class S[SiH3] TXDNPSYEJHXKMK-UHFFFAOYSA-N 0.000 claims description 5
- 150000003384 small molecules Chemical class 0.000 claims description 3
- 238000010345 tape casting Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 abstract description 21
- 230000001070 adhesive effect Effects 0.000 abstract description 11
- 239000000853 adhesive Substances 0.000 abstract description 10
- 239000000126 substance Substances 0.000 abstract description 10
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 230000002378 acidificating effect Effects 0.000 abstract description 7
- 238000004132 cross linking Methods 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 abstract description 4
- 230000009545 invasion Effects 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229960001545 hydrotalcite Drugs 0.000 description 2
- 229910001701 hydrotalcite Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000007719 peel strength test Methods 0.000 description 2
- BJELTSYBAHKXRW-UHFFFAOYSA-N 2,4,6-triallyloxy-1,3,5-triazine Chemical compound C=CCOC1=NC(OCC=C)=NC(OCC=C)=N1 BJELTSYBAHKXRW-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- WCRZEXKDNPAXKW-UHFFFAOYSA-N [La].[Ac] Chemical compound [La].[Ac] WCRZEXKDNPAXKW-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
A compound adhesive film for Topcon solar cells and a preparation method and application thereof comprise two acid-absorbing adhesive layers and a water-resisting layer sandwiched between the two acid-absorbing adhesive layers, wherein the acid-absorbing adhesive layers comprise silane derivatives and modified hydrotalcite, and the silane derivatives comprise one or two of modified silane and silane oligomers; the water-resistant layer comprises ethylene modified resin and compound acrylic ester. According to the acid-absorbing adhesive layer, the modified hydrotalcite can absorb free acid generated outside or inside on the premise of not affecting the light transmittance, so that the battery piece is prevented from being corroded by acidic substances; the composite adhesive film can keep higher adhesive force under the damp and hot condition by modifying silane and silane oligomer; the ethylene modified resin is added in the middle layer, and the crosslinking density is improved by matching with acrylic ester, so that the water-proof property of the composite adhesive film is improved, and the invasion of water vapor is prevented; the composite adhesive film can have excellent performances of acid absorption, adhesion and water insulation.
Description
Technical Field
The invention relates to the field of photovoltaic module packaging, in particular to a composite adhesive film for a Topcon solar cell, and a preparation method and application thereof.
Background
As P-type batteries approach the theoretical efficiency limit, N-type battery technology is becoming a future development. Topcon batteries are the main current N-type batteries with rapid market development at present, and become the main current choice of component markets in the next 2-3 years; currently, the 2023 annual energy production is expected to expand beyond 50GW to 80GW according to the planning of each large component company.
Although the Topcon battery piece has the highest theoretical efficiency of 28.7 percent and the highest mass production efficiency of 24-25 percent, and has the advantages of low attenuation, high double-sided rate, low temperature coefficient and the like; however, unlike conventional battery plates, silver-aluminum paste is used on the front side due to the different technical routes, and is easily corroded by acid, water vapor and the like, so that the generated power of the assembly is attenuated.
The existing packaging adhesive films in the market, EVA and EPE adhesive films are temporarily not suitable for Topcon battery pieces due to the existence of acetic acid; although the water-proof performance of the conventional POE adhesive film is slightly higher than that of the EVA adhesive film, free acidic substances exist in additives in the adhesive film or soldering flux of the battery piece, the battery piece is corroded, the conventional POE adhesive film is easily affected by high temperature and high humidity in the aging process, poor stripping force is generated, and the battery piece cannot be fully wrapped and protected, so that the battery piece is invalid.
In view of the foregoing, there is a need for an improved composite adhesive film for Topcon solar cells, and a preparation method and application thereof, so as to solve the above-mentioned technical problems.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, and provides a composite adhesive film for a Topcon solar cell, and a preparation method and application thereof.
In order to achieve one of the above purposes, the present invention adopts the following technical scheme:
The composite adhesive film for the Topcon solar cell comprises two acid-absorbing adhesive layers and a water-resisting layer which is clamped between the two acid-absorbing adhesive layers, wherein the acid-absorbing adhesive layers comprise silane derivatives and modified hydrotalcite, and the silane derivatives comprise one or two of modified silane and silane oligomer; the water-resistant layer comprises ethylene modified resin and compound acrylic ester.
Further, the acid-absorbing adhesive layer comprises the following components: POE particles: 80-90 parts; 0.8 to 3 parts of cross-linking agent; silane derivative in 0.3-1.05 weight portions; 0.2 to 0.6 part of modified hydrotalcite; 0.1 to 0.45 part of light stabilizer; 0.1 to 0.35 part of antioxidant.
Further, the water-resistant layer comprises the following components: 80-90 parts of POE particles; 0.8 to 3 parts of cross-linking agent; 10-20 parts of ethylene modified resin; silane derivative in 0.3-0.6 weight portions; 0.5 to 1.5 portions of compound acrylic ester; 0.1 to 0.45 part of light stabilizer; 0.1 to 0.4 part of antioxidant.
Further, in the silane derivative, the modified silane is one or more of isocyanatopropyl trioxyethyl silane, vinyl triacetoxy silane, methacryloxypropyl trimethoxy silane derivative, small molecule polysiloxane and mercapto silane derivative; the silane oligomer is one or more of alkyl vinyl silane oligomer or amino silane oligomer.
Further, the modified hydrotalcite is aluminum-magnesium modified hydrotalcite, and the modified hydrotalcite comprises at least one of Mg4Al2(OH)12CO3·3H2O、Mg6Al2(OH)16CO3·3H2O、Mg15Zn0.5Al2(OH)12CO3·H2O、Mg4.5Al2(OH)13CO3·3.5H2O、Mg15Zn0.5Al2(OH)12CO3、Mg6Al2(OH)16CO3、Mg4.5Al2(OH)13CO3.
Further, the ethylene modified resin is one or two of linear low density polyethylene or low density polyethylene, and the content of the ethylene modified resin is 10-20%.
Further, the compound acrylic ester is one or more of ethoxylated trimethylolpropane triacrylate, propoxylated trimethylolpropane triacrylate, polyethylene glycol diacrylate, tricyclodecane dimethanol diacrylate and ditrimethylolpropane tetraacrylate.
Further, the cross-linking agent is one or more of tert-butyl peroxy-2-ethylhexyl carbonate, tert-amyl peroxy-2-ethylhexyl carbonate, triallyl isocyanurate and dicumyl peroxide;
And/or the number of the groups of groups, the light stabilizer comprises a polymer of succinic acid and (4-hydroxy-2, 6-tetramethyl-1-piperidinol), bis-2, 6-tetramethyl piperidinol sebacate, hindered amine at least one of 1,3, 5-trimethyl-2, 4, 6-tris (3, 5-di-t-butyl-4-hydroxybenzyl) benzene, tris (2, 4-di-t-butylphenyl) phosphite and 2, 6-tetramethyl-4-piperidinyl ester.
And/or the antioxidant comprises at least one of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid n-stearyl alcohol ester, tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and tri [2, 4-di-tert-butylphenyl ] phosphite.
Further, the thickness of the water-proof layer is larger than that of the acid-absorbing bonding layers on two sides, the acid-absorbing bonding layers comprise a first acid-absorbing bonding layer and a second acid-absorbing bonding layer, and the thickness ratio of the first acid-absorbing bonding layer to the water-proof layer to the second acid-absorbing bonding layer is (1-1.5): 2-4): 1-1.5.
Further, the light transmittance of the composite adhesive film is 91-92%, the water permeability is lower than 18g/m 2. D, the initial bonding strength with glass is more than 105N/cm, the bonding strength with glass DH for 2000h is more than 100N/cm, and the volume resistivity is 15 multiplied by 10 16Ω.cm～35×1016 ohm cm.
The preparation method of the composite adhesive film for the Topcon solar cell comprises the following steps:
s1, providing 2 parts of raw materials of an acid-absorbing bonding layer, wherein the raw materials of the acid-absorbing bonding layer comprise silane derivatives and modified hydrotalcite, and the silane derivatives comprise one or more of modified silane and silane oligomer;
S2, providing raw materials of a water-resistant layer, wherein the raw materials of the water-resistant layer comprise ethylene modified resin and compound acrylic ester;
s3, obtaining a composite adhesive film through mixing, screw plasticization, three-layer coextrusion, tape casting and compounding, wherein the composite adhesive film comprises two acid-absorbing adhesive layers and a water-resisting layer clamped between the two acid-absorbing adhesive layers.
Further, the acid-absorbing adhesive layer comprises the following components: POE particles: 80-90 parts; 0.8 to 3 parts of cross-linking agent; silane derivative in 0.3-1.05 weight portions; 0.2 to 0.6 part of modified hydrotalcite; 0.1 to 0.45 part of light stabilizer; 0.1 to 0.35 part of antioxidant; the water-resistant layer comprises the following components: 80-90 parts of POE particles; 0.8 to 3 parts of cross-linking agent; 10-20 parts of ethylene modified resin; silane derivative in 0.3-0.6 weight portions; 0.5 to 1.5 portions of compound acrylic ester; 0.1 to 0.45 part of light stabilizer; 0.1 to 0.4 part of antioxidant.
Further, the cross-linking agent is one or more of tert-butyl peroxy-2-ethylhexyl carbonate, tert-amyl peroxy-2-ethylhexyl carbonate, triallyl isocyanurate and dicumyl peroxide;
And/or, in the silane derivative, the modified silane is one or more of isocyanatopropyl trioxyethyl silane, vinyl triacetoxy silane, methacryloxypropyl trimethoxy silane derivative, small molecule polysiloxane and mercapto silane derivative; the silane oligomer is one or more of alkyl vinyl silane oligomer or amino silane oligomer;
And/or the modified hydrotalcite is aluminum-magnesium modified hydrotalcite, and the modified hydrotalcite comprises at least one of Mg4Al2(OH)12CO3·3H2O、Mg6Al2(OH)16CO3·3H2O、Mg15Zn0.5Al2(OH)12CO3·H2O、Mg4.5Al2(OH)13CO3·3.5H2O、Mg15Zn0.5Al2(OH)12CO3、Mg6Al2(OH)16CO3、Mg4.5Al2(OH)13CO3;
And/or the ethylene modified resin is one or two of linear low-density polyethylene and low-density polyethylene, and the content of the ethylene modified resin is 10% -20%;
And/or the compound acrylic ester is one or more of ethoxylated trimethylolpropane triacrylate, propoxylated trimethylolpropane triacrylate, polyethylene glycol diacrylate, tricyclodecane dimethanol diacrylate and ditrimethylolpropane tetraacrylate;
And/or the number of the groups of groups, the light stabilizer comprises a polymer of succinic acid and (4-hydroxy-2, 6-tetramethyl-1-piperidinol), bis-2, 6-tetramethyl piperidinol sebacate, hindered amine at least one of 1,3, 5-trimethyl-2, 4, 6-tris (3, 5-di-t-butyl-4-hydroxybenzyl) benzene, tris (2, 4-di-t-butylphenyl) phosphite and 2, 6-tetramethyl-4-piperidinyl ester.
And/or the antioxidant comprises at least one of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid n-stearyl alcohol ester, tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and tri [2, 4-di-tert-butylphenyl ] phosphite.
The application of the composite adhesive film for the Topcon solar cell in the photovoltaic module is disclosed.
The beneficial effects of the invention are as follows: the composite adhesive film for the Topcon solar cell has two layers of acid-absorbing adhesive layers on the outer sides, and can absorb free acid generated outside or inside on the premise of not influencing the light transmittance by modifying hydrotalcite, so that the cell is prevented from being corroded by acidic substances; the composite adhesive film can keep higher adhesive force under the damp and hot condition by modifying silane and silane oligomer; the ethylene modified resin is added in the middle layer, and the crosslinking density is improved by matching with acrylic ester, so that the water-proof property of the composite adhesive film is improved, and the invasion of water vapor is prevented; the composite adhesive film can have excellent performances of acid absorption, adhesion and water insulation.
Drawings
Fig. 1 is a schematic cross-sectional view of a composite adhesive film for Topcon solar cells according to a preferred embodiment of the present invention.
Wherein, 100-composite adhesive film, 1-acid absorption adhesive layer, 11-first acid absorption adhesive layer, 12-second acid absorption adhesive layer and 2-water-proof layer.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the invention and structural, methodological, or functional modifications of these embodiments that may be made by one of ordinary skill in the art are included within the scope of the invention.
In the various illustrations of the invention, certain dimensions of structures or portions may be exaggerated relative to other structures or portions for convenience of illustration, and thus serve only to illustrate the basic structure of the inventive subject matter.
Referring to fig. 1, a composite adhesive film 100 for Topcon solar cells according to the present invention has a three-layer structure, and includes two acid-absorbing adhesive layers 1, and a water-resistant layer 2 sandwiched between the two acid-absorbing adhesive layers 1, wherein the two acid-absorbing adhesive layers 1 are a first acid-absorbing adhesive layer 11 and a second acid-absorbing adhesive layer 12, respectively.
The acid absorbing adhesive layer 1 adsorbs free acidic substances, and meanwhile, good adhesion is maintained, so that the adhesive is adhered to the upper and lower structures of the photovoltaic module; the water permeability of the whole composite adhesive film 100 is reduced through the middle water-resistant layer 2, so that the water vapor permeability in the use process is prevented; so that the whole composite adhesive film 100 has the characteristics of low acid, water resistance, strong adhesive property and the like, and ensures the normal operation of the Topcon battery piece.
The acid-absorbing adhesive layer 1 contains modified hydrotalcite, and can absorb free acidic substances on the premise of not affecting the light transmittance. Meanwhile, the acid-absorbing adhesive layer 1 also contains silane derivatives, so that the composite adhesive film 100 can keep high adhesive force under the damp and hot condition.
Preferably, the raw materials of the acid-absorbing adhesive layer 1 include:
The POE particles: 80-90 parts;
0.8 to 3 parts of cross-linking agent;
Silane derivative in 0.3-1.05 weight portions;
0.2 to 0.6 part of modified hydrotalcite;
0.1 to 0.45 part of light stabilizer;
0.1 to 0.35 part of antioxidant.
Wherein, the POE particle is any one of the commercial products, such as 38660 of Dow chemical (DOW): 38669 at 1:1 mass ratio, and mixing.
The cross-linking agent comprises at least one of tert-butyl peroxy-2-ethylhexyl carbonate, tert-amyl peroxy-2-ethylhexyl carbonate, triallyl isocyanurate, triallyl cyanurate, dicumyl peroxide, benzoyl peroxide, di-tert-butyl peroxide and dicumyl hydroperoxide.
The silane derivative comprises one or two of modified silane and silane oligomer. The modified silane is one or more of isocyanatopropyl trioxyethyl silane, vinyl triacetoxy silane, methacryloxypropyl trimethoxy silane derivative, small molecular polysiloxane and mercapto silane derivative; the silane oligomer is one or more of alkyl vinyl silane oligomer or amino silane oligomer.
Preferably, the silane derivative is a mixture of modified silane and silane oligomer, so that the acid absorbing adhesive layer 1 maintains high adhesive force under the damp and hot condition.
The modified hydrotalcite is aluminum-magnesium modified hydrotalcite, can adsorb acidic free substances, and reduces corrosion to battery plates and components. The modified hydrotalcite includes at least one of Mg4Al2(OH)12CO3·3H2O、Mg15Zn0.5Al2(OH)12CO3·H2O、Mg4.5Al2(OH)13CO3·3.5H2O、Mg6Al2(OH)16CO3·3H2O、Mg15Zn0.5Al2(OH)12CO3、Mg6Al2(OH)16CO3、Mg4.5Al2(OH)13CO3.
The light stabilizer comprises a polymer of succinic acid and (4-hydroxy-2, 6-tetramethyl-1-piperidinol), bis-2, 6-tetramethyl piperidinol sebacate, hindered amine at least one of 1,3, 5-trimethyl-2, 4, 6-tris (3, 5-di-t-butyl-4-hydroxybenzyl) benzene, tris (2, 4-di-t-butylphenyl) phosphite and 2, 6-tetramethyl-4-piperidinyl ester.
The antioxidant comprises at least one of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid n-stearyl alcohol ester, tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and tri [2, 4-di-tert-butylphenyl ] phosphite.
The materials and thicknesses of the first acid-adsorbing adhesive layer 11 and the second acid-adsorbing adhesive layer 12 may be the same or different.
The ethylene modified resin is added into the water-resistant layer 2 to improve the polarity and the hydrophobicity of the adhesive film, so that the adhesive film has lower water permeability; and meanwhile, the crosslinking density is improved by combining the compound acrylic ester, so that the water-proof property of the integral adhesive film is greatly increased, the water vapor transmittance in the use process is prevented, and the normal work of the battery piece is kept.
Preferably, the raw materials of the acid-absorbing adhesive layer 1 include:
80-90 parts of POE particles;
0.8 to 3 parts of cross-linking agent;
10-20 parts of ethylene modified resin;
silane derivative in 0.3-0.6 weight portions;
0.5 to 1.5 portions of compound acrylic ester;
0.1 to 0.45 part of light stabilizer;
0.1 to 0.4 part of antioxidant.
Wherein the ethylene modified resin is one or two of linear low-density polyethylene and low-density polyethylene, and the content is 10-20%.
The compound acrylic ester is one or more of ethoxylated trimethylolpropane triacrylate, propoxylated trimethylolpropane triacrylate, polyethylene glycol diacrylate, tricyclodecane dimethanol diacrylate and ditrimethylolpropane tetraacrylate.
The POE particles, the cross-linking agent, the silane derivative, the light stabilizer, the antioxidant and the acid absorbing adhesive layer 1 have the same components and are not described herein.
In addition, the thickness of the water-proof layer 2 is larger than that of the acid-absorbing adhesive layers 1 on two sides, so that good water-proof performance is ensured. The acid absorbing adhesive layers 1 on both sides may have the same thickness or may have different thicknesses.
Preferably, the thickness ratio of the first acid-absorbing adhesive layer 11, the water-resisting layer 2 and the second acid-absorbing adhesive layer 12 is (1-1.5): 2-4): 1-1.5. In one embodiment, the thickness ratio of the first acid-absorbing adhesive layer 11, the water-resistant layer 2, and the second acid-absorbing adhesive layer 12 is 1:2:1.
The composite adhesive film for the Topcon solar cell has good acid absorption, adhesion and water insulation performances on the premise of ensuring light transmittance. The light transmittance is 91-92%, the water permeability is lower than 18g/m 2 d, the initial bonding strength with glass is above 105N/cm, the bonding strength with glass DH for 2000h is above 100N/cm, the volume resistivity is 15X 10 16Ω.cm～35×1016 Ω cm, and the power DH2000h attenuation of the Topcon assembly is not more than 3%.
The invention also provides a preparation method of the composite adhesive film for the Topcon solar cell, which comprises the following steps:
S1, providing 2 parts of raw materials of an acid-absorbing adhesive layer, wherein the components are as shown above;
s2, providing a raw material of a water-resistant layer, wherein the components are shown as above;
S3, obtaining a composite adhesive film through mixing, screw plasticization, three-layer coextrusion, tape casting and compounding, wherein the composite adhesive film comprises a first acid-absorbing adhesive layer 11, a water-resisting layer 2 and a second acid-absorbing adhesive layer 12 which are sequentially laminated along the thickness direction; the first acid-absorbing adhesive layer 11 and the second acid-absorbing adhesive layer 12 are each formed from 2 parts of the raw material of the acid-absorbing adhesive layer.
The steps S1 and S2 do not distinguish the sequence, and may be performed simultaneously.
The composite adhesive film 100 for Topcon solar cells according to the present invention will be described in detail with specific examples.
Example 1
A composite adhesive film 100 for Topcon solar cells, comprising: the first acid-absorbing adhesive layer 11, the water-resisting layer 2 and the second acid-absorbing adhesive layer 12 are sequentially laminated along the thickness direction, and the thickness ratio of the first acid-absorbing adhesive layer 11, the water-resisting layer 2 and the second acid-absorbing adhesive layer 12 is 1:2:1.
Wherein, the first acid-absorbing adhesive layer 11 comprises the following raw materials in parts by weight: POE particles: 90 parts; crosslinking agent: 1.9 parts; modified hydrotalcite: 0.4 parts; light stabilizers: 0.3 parts; an antioxidant: 0.3 parts; silane derivative: 1.05 parts.
The second acid-absorbing adhesive layer 12 comprises the following raw materials in parts by weight: POE particles: 90 parts; crosslinking agent: 1.9 parts; modified hydrotalcite: 0.5 parts; light stabilizers: 0.3 parts; an antioxidant: 0.3 parts; silane derivative: 1.05 parts.
Wherein, POE particles of the two acid absorbing bonding layers are 38660 of Dow chemical (DOW): 38669 at 1:1 mass ratio, and mixing.
The cross-linking agent comprises the following two raw materials, namely tert-butyl peroxy-2-ethylhexyl carbonate and triallyl isocyanurate, which are mixed in a mass ratio of 9:10.
The weight ratio of modified silane to silane oligomer in the modified silane to silane oligomer is 2:1. the modified silane is vinyl triacetoxy silane; the silane oligomer is alkyl vinyl silane oligomer and amino silane oligomer, and the weight ratio of the alkyl vinyl silane oligomer to the amino silane oligomer is 1:2. in this example, the silane oligomer is selected from J & Y3146, J & Y3153 of Shanghai lanthanum actinium chemical technology.
The modified hydrotalcite is as follows: mg 4Al2(OH)12CO3·3H2 O.
The light stabilizer is bis-2, 6-tetramethyl piperidinol sebacate.
The antioxidant is beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid n-stearyl alcohol ester.
The water-resistant layer 2 comprises the following raw materials in parts by weight: POE particles: 90 parts; crosslinking agent: 2.1 parts; ethylene modified resin: 10 parts; compounding acrylic ester: 0.5 parts; silane derivative: 0.5 parts; light stabilizers: 0.3 parts; an antioxidant: 0.3 parts.
The cross-linking agent of the water-resisting layer 2 comprises three raw materials, namely tert-butyl peroxy-2-ethylhexyl carbonate, tert-amyl peroxy-2-ethylhexyl carbonate and triallyl isocyanurate which are mixed according to the mass ratio of 9:4:10.
The ethylene modified resin is a hyperbranched polyethylene.
The compound acrylic ester is trimethylolpropane triacrylate.
The silane derivative, the light stability and the antioxidant are the same as those of the two acid-absorbing bonding layers, and are not described in detail herein.
The preparation method comprises the steps of mixing the raw materials according to the weight parts, plasticizing by a screw, and carrying out coextrusion casting compounding by a die head to obtain the composite adhesive film.
Example 2
Example 2 is basically the same as example 1, except that the thickness ratio of the first acid absorbing adhesive layer 11, the water-resistant layer 2, and the second acid absorbing adhesive layer 12 is 1:2.5:1
Example 3
Example 3 differs from example 1 in that:
The first acid-absorbing adhesive layer 11 comprises the following raw materials in parts by weight: POE particles: 85 parts; crosslinking agent: 1.5 parts; 0.3 parts of modified hydrotalcite; light stabilizers: 0.1 part; an antioxidant: 0.1 part; silane derivative: 0.5 part.
The second acid-absorbing adhesive layer 12 comprises the following raw materials in parts by weight: POE particles: 85 parts; crosslinking agent: 1.5 parts; modified hydrotalcite: 0.3 parts; light stabilizers: 0.1 part; an antioxidant: 0.1 part; silane derivative: 0.5 part.
The water-resistant layer 2 comprises the following raw materials in parts by weight: POE particles: 85 parts; crosslinking agent: 2.2 parts; ethylene modified resin: 10 parts; acrylic ester: 1.5 parts; light stabilizers: 0.1 part; an antioxidant: 0.1 part; silane derivative: 0.3 parts.
The thickness ratio of the first acid-absorbing adhesive layer 11, the water-resisting layer 2 and the second acid-absorbing adhesive layer 12 is 1:2:1.
Example 4
Example 4 differs from example 3 in that: the ethylene-modified resin of the water-resistant layer 2 was 20 parts.
Comparative example 1: conventional POE adhesive films of the company.
The composite adhesive film obtained by the embodiment is prepared by heating and laminating Topcon batteries in the same batch to prepare a photovoltaic module to be tested, wherein the lamination process parameters are as follows: temperature: 145 ℃; time: 20min.
Table 1 results of Performance test of composite adhesive film in examples
The test methods for each parameter in table 1 are as follows:
1) Transmittance of the adhesive film: the test was performed according to GB/T2410-2008 clear plastics transmittance and haze measurements.
2) Permeability of the adhesive film: testing was performed according to ISO 15106-1:2003 (E).
3) Initial adhesive strength of adhesive film and glass: the flexible materials were tested for rigid materials according to GB/T2790-1995 adhesive 180 peel strength test method.
4) Adhesive strength of adhesive film after DH2000h of adhesion with glass: the flexible materials were tested for rigid materials according to GB/T2790-1995 adhesive 180 peel strength test method.
5) Volume resistance of the adhesive film: the test is carried out according to the test method of volume resistivity and surface resistivity of the solid insulating material of GB/T1401-2006.
6) Component power decay rate: according to IEC TS 62804-1: the 2015 crystalline silicon photovoltaic module potential induced attenuation test method is used for testing.
As can be seen from the data in table 1, the water permeability of example 2 was reduced compared with that of example 1, which indicates that the thickness of the water-resistant layer was increased, and the water-resistant performance of the composite adhesive film was improved. The water permeability of the embodiment 3 and the embodiment 4 is reduced compared with that of the embodiment 1, which shows that the water permeability of the composite adhesive film can be reduced and the water blocking performance can be improved by increasing the amount of the acrylic ester and the ethylene modified resin; however, since the content of the modified hydrotalcite was reduced, the acid resistance was inferior to that of example 1, resulting in a slightly increased degree of deterioration of the battery assembly
The beneficial effects of the invention are as follows: the composite adhesive film 100 for the Topcon solar cell has two layers of acid absorption adhesive layers 1, and can absorb free acid generated outside or inside on the premise of not influencing the light transmittance by modifying hydrotalcite, so that the cell is not corroded by acidic substances; the silane and the silane oligomer are modified, so that the composite adhesive film 100 keeps higher adhesive force under the damp and hot condition; the ethylene modified resin is added in the middle layer, and the crosslinking density is improved by matching with acrylic ester, so that the water-proof property of the composite adhesive film 100 is improved, and the invasion of water vapor is prevented; so that the composite adhesive film 100 can give consideration to the excellent performances of acid absorption, adhesion and water insulation.
It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.
The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.
Claims (14)
1. The composite adhesive film for the Topcon solar cell is characterized by comprising two acid-absorbing adhesive layers and a water-resisting layer which is clamped between the two acid-absorbing adhesive layers, wherein the acid-absorbing adhesive layers comprise silane derivatives and modified hydrotalcite, and the silane derivatives comprise one or two of modified silane and silane oligomer; the water-resistant layer comprises ethylene modified resin and compound acrylic ester.
2. The composite adhesive film for Topcon solar cells of claim 1, wherein: the acid-absorbing adhesive layer comprises the following components:
POE particles: 80-90 parts;
0.8 to 3 parts of cross-linking agent;
Silane derivative in 0.3-1.05 weight portions;
0.2 to 0.6 part of modified hydrotalcite;
0.1 to 0.45 part of light stabilizer;
0.1 to 0.35 part of antioxidant.
3. The composite adhesive film for Topcon solar cells of claim 1, wherein: the water-resistant layer comprises the following components:
80-90 parts of POE particles;
0.8 to 3 parts of cross-linking agent;
10-20 parts of ethylene modified resin;
silane derivative in 0.3-0.6 weight portions;
0.5 to 1.5 portions of compound acrylic ester;
0.1 to 0.45 part of light stabilizer;
0.1 to 0.4 part of antioxidant.
4. A composite adhesive film for Topcon solar cells according to any one of claims 1 to 3, wherein: in the case of the silane derivative, among them,
The modified silane is one or more of isocyanatopropyl trioxyethyl silane, vinyl triacetoxy silane, methacryloxypropyl trimethoxy silane derivative, small molecular polysiloxane and mercapto silane derivative;
the silane oligomer is one or more of alkyl vinyl silane oligomer or amino silane oligomer.
5. The composite adhesive film for Topcon solar cells according to claim 1 or 2, wherein: the modified hydrotalcite is aluminum-magnesium modified hydrotalcite, and the modified hydrotalcite comprises at least one of Mg4Al2(OH)12CO3·3H2O、Mg6Al2(OH)16CO3·3H2O、Mg15Zn0.5Al2(OH)12CO3·H2O、Mg4.5Al2(OH)13CO3·3.5H2O、Mg15Zn0.5Al2(OH)12CO3、Mg6Al2(OH)16CO3、Mg4.5Al2(OH)13CO3.
6. A composite adhesive film for Topcon solar cells according to claim 1 or 3, characterized in that: the ethylene modified resin is one or two of linear low-density polyethylene and low-density polyethylene, and the content of the ethylene modified resin is 10-20%.
7. A composite adhesive film for Topcon solar cells according to claim 1 or 3, characterized in that: the compound acrylic ester is one or more of ethoxylated trimethylolpropane triacrylate, propoxylated trimethylolpropane triacrylate, polyethylene glycol diacrylate, tricyclodecane dimethanol diacrylate and ditrimethylolpropane tetraacrylate.
8. A composite adhesive film for Topcon solar cells according to any one of claims 1 to 3, wherein:
The cross-linking agent is one or more of tert-butyl peroxy-2-ethylhexyl carbonate, tert-amyl peroxy-2-ethylhexyl carbonate, triallyl isocyanurate and dicumyl peroxide;
And/or the number of the groups of groups, the light stabilizer comprises a polymer of succinic acid and (4-hydroxy-2, 6-tetramethyl-1-piperidinol), bis-2, 6-tetramethyl piperidinol sebacate, hindered amine at least one of 1,3, 5-trimethyl-2, 4, 6-tris (3, 5-di-t-butyl-4-hydroxybenzyl) benzene, tris (2, 4-di-t-butylphenyl) phosphite and 2, 6-tetramethyl-4-piperidinyl ester.
And/or the antioxidant comprises at least one of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid n-stearyl alcohol ester, tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and tri [2, 4-di-tert-butylphenyl ] phosphite.
9. The composite adhesive film for Topcon solar cells of claim 1, wherein: the thickness of the water-proof layer is larger than that of the acid-absorbing adhesive layers on two sides, the acid-absorbing adhesive layers comprise a first acid-absorbing adhesive layer and a second acid-absorbing adhesive layer, and the thickness ratio of the first acid-absorbing adhesive layer to the water-proof layer to the second acid-absorbing adhesive layer is (1-1.5): 2-4): 1-1.5.
10. The composite adhesive film for Topcon solar cells of claim 1, wherein: the light transmittance of the composite adhesive film is 91-92%, the water permeability is lower than 18g/m 2. D, the initial bonding strength with glass is more than 105N/cm, the bonding strength with glass DH for 2000h is more than 100N/cm, and the volume resistivity is 15 multiplied by 10 16Ω.cm～35×1016 Ω & cm.
11. The preparation method of the composite adhesive film for the Topcon solar cell is characterized by comprising the following steps of: the method comprises the following steps:
s1, providing 2 parts of raw materials of an acid-absorbing bonding layer, wherein the raw materials of the acid-absorbing bonding layer comprise silane derivatives and modified hydrotalcite, and the silane derivatives comprise one or more of modified silane and silane oligomer;
S2, providing raw materials of a water-resistant layer, wherein the raw materials of the water-resistant layer comprise ethylene modified resin and compound acrylic ester;
s3, obtaining a composite adhesive film through mixing, screw plasticization, three-layer coextrusion, tape casting and compounding, wherein the composite adhesive film comprises two acid-absorbing adhesive layers and a water-resisting layer clamped between the two acid-absorbing adhesive layers.
12. The method for preparing the composite adhesive film for the Topcon solar cell according to claim 11, wherein the method comprises the following steps:
The acid-absorbing adhesive layer comprises the following components:
POE particles: 80-90 parts;
0.8 to 3 parts of cross-linking agent;
Silane derivative in 0.3-1.05 weight portions;
0.2 to 0.6 part of modified hydrotalcite;
0.1 to 0.45 part of light stabilizer;
0.1 to 0.35 part of antioxidant;
The water-resistant layer comprises the following components:
80-90 parts of POE particles;
0.8 to 3 parts of cross-linking agent;
10-20 parts of ethylene modified resin;
silane derivative in 0.3-0.6 weight portions;
0.5 to 1.5 portions of compound acrylic ester;
0.1 to 0.45 part of light stabilizer;
0.1 to 0.4 part of antioxidant.
13. The method for preparing the composite adhesive film for Topcon solar cells according to claim 12, wherein:
The cross-linking agent is one or more of tert-butyl peroxy-2-ethylhexyl carbonate, tert-amyl peroxy-2-ethylhexyl carbonate, triallyl isocyanurate and dicumyl peroxide;
And/or, in the silane derivative, the modified silane is one or more of isocyanatopropyl trioxyethyl silane, vinyl triacetoxy silane, methacryloxypropyl trimethoxy silane derivative, small molecule polysiloxane and mercapto silane derivative; the silane oligomer is one or more of alkyl vinyl silane oligomer or amino silane oligomer;
And/or the modified hydrotalcite is aluminum-magnesium modified hydrotalcite, and the modified hydrotalcite comprises at least one of Mg4Al2(OH)12CO3·3H2O、Mg6Al2(OH)16CO3·3H2O、Mg15Zn0.5Al2(OH)12CO3·H2O、Mg4.5Al2(OH)13CO3·3.5H2O、Mg15Zn0.5Al2(OH)12CO3、Mg6Al2(OH)16CO3、Mg4.5Al2(OH)13CO3;
And/or the ethylene modified resin is one or two of linear low-density polyethylene and low-density polyethylene, and the content of the ethylene modified resin is 10% -20%;
And/or the compound acrylic ester is one or more of ethoxylated trimethylolpropane triacrylate, propoxylated trimethylolpropane triacrylate, polyethylene glycol diacrylate, tricyclodecane dimethanol diacrylate and ditrimethylolpropane tetraacrylate;
And/or the number of the groups of groups, the light stabilizer comprises a polymer of succinic acid and (4-hydroxy-2, 6-tetramethyl-1-piperidinol), bis-2, 6-tetramethyl piperidinol sebacate, hindered amine at least one of 1,3, 5-trimethyl-2, 4, 6-tris (3, 5-di-t-butyl-4-hydroxybenzyl) benzene, tris (2, 4-di-t-butylphenyl) phosphite and 2, 6-tetramethyl-4-piperidinyl ester.
And/or the antioxidant comprises at least one of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid n-stearyl alcohol ester, tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and tri [2, 4-di-tert-butylphenyl ] phosphite.
14. Use of a composite adhesive film for Topcon solar cells according to any one of claims 1 to 10 in a photovoltaic module.
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