CN106252442A - 一种太阳能电池背板 - Google Patents
一种太阳能电池背板 Download PDFInfo
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- CN106252442A CN106252442A CN201610793402.0A CN201610793402A CN106252442A CN 106252442 A CN106252442 A CN 106252442A CN 201610793402 A CN201610793402 A CN 201610793402A CN 106252442 A CN106252442 A CN 106252442A
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- adhesive
- solar cell
- layered silicate
- quaternary ammonium
- salt
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- 230000001070 adhesive effect Effects 0.000 claims abstract description 83
- 239000000853 adhesive Substances 0.000 claims abstract description 79
- -1 alkyl quaternary ammonium salts Chemical class 0.000 claims abstract description 54
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 39
- 150000003839 salts Chemical class 0.000 claims abstract description 38
- 239000000945 filler Substances 0.000 claims abstract description 37
- 229910052615 phyllosilicate Inorganic materials 0.000 claims abstract description 36
- 239000011248 coating agent Substances 0.000 claims abstract description 31
- 238000000576 coating method Methods 0.000 claims abstract description 31
- 239000010410 layer Substances 0.000 claims abstract description 20
- 239000012790 adhesive layer Substances 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 16
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- 125000003178 carboxy group Chemical class [H]OC(*)=O 0.000 claims description 13
- 125000002887 hydroxy group Chemical class [H]O* 0.000 claims description 13
- 125000003368 amide group Chemical class 0.000 claims description 11
- 150000004760 silicates Chemical class 0.000 claims description 11
- 125000000217 alkyl group Chemical group 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 239000005995 Aluminium silicate Substances 0.000 claims description 6
- 235000012211 aluminium silicate Nutrition 0.000 claims description 6
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical group O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 239000000454 talc Substances 0.000 claims description 3
- 235000012222 talc Nutrition 0.000 claims description 3
- 229910052623 talc Inorganic materials 0.000 claims description 3
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 2
- 239000004593 Epoxy Substances 0.000 claims 1
- 150000001412 amines Chemical class 0.000 claims 1
- 239000007800 oxidant agent Substances 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
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- 238000000034 method Methods 0.000 description 13
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- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 8
- 229910052901 montmorillonite Inorganic materials 0.000 description 8
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- 230000005070 ripening Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 5
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- LVDRREOUMKACNJ-BKMJKUGQSA-N N-[(2R,3S)-2-(4-chlorophenyl)-1-(1,4-dimethyl-2-oxoquinolin-7-yl)-6-oxopiperidin-3-yl]-2-methylpropane-1-sulfonamide Chemical compound CC(C)CS(=O)(=O)N[C@H]1CCC(=O)N([C@@H]1c1ccc(Cl)cc1)c1ccc2c(C)cc(=O)n(C)c2c1 LVDRREOUMKACNJ-BKMJKUGQSA-N 0.000 description 5
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- ITOFPJRDSCGOSA-KZLRUDJFSA-N (2s)-2-[[(4r)-4-[(3r,5r,8r,9s,10s,13r,14s,17r)-3-hydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1h-cyclopenta[a]phenanthren-17-yl]pentanoyl]amino]-3-(1h-indol-3-yl)propanoic acid Chemical compound C([C@H]1CC2)[C@H](O)CC[C@]1(C)[C@@H](CC[C@]13C)[C@@H]2[C@@H]3CC[C@@H]1[C@H](C)CCC(=O)N[C@H](C(O)=O)CC1=CNC2=CC=CC=C12 ITOFPJRDSCGOSA-KZLRUDJFSA-N 0.000 description 3
- QBWKPGNFQQJGFY-QLFBSQMISA-N 3-[(1r)-1-[(2r,6s)-2,6-dimethylmorpholin-4-yl]ethyl]-n-[6-methyl-3-(1h-pyrazol-4-yl)imidazo[1,2-a]pyrazin-8-yl]-1,2-thiazol-5-amine Chemical compound N1([C@H](C)C2=NSC(NC=3C4=NC=C(N4C=C(C)N=3)C3=CNN=C3)=C2)C[C@H](C)O[C@H](C)C1 QBWKPGNFQQJGFY-QLFBSQMISA-N 0.000 description 3
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- 125000000524 functional group Chemical group 0.000 description 3
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- 239000011112 polyethylene naphthalate Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- HBGPNLPABVUVKZ-POTXQNELSA-N (1r,3as,4s,5ar,5br,7r,7ar,11ar,11br,13as,13br)-4,7-dihydroxy-3a,5a,5b,8,8,11a-hexamethyl-1-prop-1-en-2-yl-2,3,4,5,6,7,7a,10,11,11b,12,13,13a,13b-tetradecahydro-1h-cyclopenta[a]chrysen-9-one Chemical compound C([C@@]12C)CC(=O)C(C)(C)[C@@H]1[C@H](O)C[C@]([C@]1(C)C[C@@H]3O)(C)[C@@H]2CC[C@H]1[C@@H]1[C@]3(C)CC[C@H]1C(=C)C HBGPNLPABVUVKZ-POTXQNELSA-N 0.000 description 2
- PFRGGOIBYLYVKM-UHFFFAOYSA-N 15alpha-hydroxylup-20(29)-en-3-one Natural products CC(=C)C1CCC2(C)CC(O)C3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 PFRGGOIBYLYVKM-UHFFFAOYSA-N 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- 241000446313 Lamella Species 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- SOKRNBGSNZXYIO-UHFFFAOYSA-N Resinone Natural products CC(=C)C1CCC2(C)C(O)CC3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 SOKRNBGSNZXYIO-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002998 adhesive polymer Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 239000010954 inorganic particle Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N methylene hexane Natural products CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 description 2
- RZJRJXONCZWCBN-UHFFFAOYSA-N octadecane Chemical compound CCCCCCCCCCCCCCCCCC RZJRJXONCZWCBN-UHFFFAOYSA-N 0.000 description 2
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- VLDBEZDOSUKOBS-UHFFFAOYSA-O 2-(3-hydroxyphenyl)ethyl-trimethylazanium Chemical compound C[N+](C)(C)CCC1=CC=CC(O)=C1 VLDBEZDOSUKOBS-UHFFFAOYSA-O 0.000 description 1
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical class CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004836 Glue Stick Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
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- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- NAPSCFZYZVSQHF-UHFFFAOYSA-N dimantine Chemical class CCCCCCCCCCCCCCCCCCN(C)C NAPSCFZYZVSQHF-UHFFFAOYSA-N 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- OQKFOMLUQPERBK-UHFFFAOYSA-N dodecyl-(3-hydroxypropyl)-dimethylazanium Chemical class CCCCCCCCCCCC[N+](C)(C)CCCO OQKFOMLUQPERBK-UHFFFAOYSA-N 0.000 description 1
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
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- 238000013508 migration Methods 0.000 description 1
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- 239000000178 monomer Substances 0.000 description 1
- IOKYPACLTOWHCM-UHFFFAOYSA-N n,n-diethyldodecan-1-amine Chemical class CCCCCCCCCCCCN(CC)CC IOKYPACLTOWHCM-UHFFFAOYSA-N 0.000 description 1
- 229940038384 octadecane Drugs 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011833 salt mixture Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/049—Protective back sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
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- Engineering & Computer Science (AREA)
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Abstract
本发明涉及一种太阳能电池背板,包括耐候层、基层、粘结层和胶粘剂层,所述胶粘剂层由胶粘剂涂布液涂布干燥得到,所述胶粘剂涂布液的组成及质量份数为:胶粘剂50~95份,有机层状硅酸盐填料5~50份,所述有机层状硅酸盐填料为两种或两种以上烷基季铵盐修饰的层状硅酸盐。本发明的太阳能电池背板具有良好的水汽阻隔性和绝缘性,使得背板的WVTR小于等于1.22(g/m2.day),局放大于等于1100V。
Description
技术领域
本发明属于太阳能技术领域,特别涉及一种太阳能电池背板。
背景技术
太阳能是人类取之不尽、用之不竭的能源。太阳能电池将太阳能直接转换成电能。背板是太阳能电池的封装材料,其功能是保护太阳能电池内部材料以及支撑、固定太阳能电池。背板是太阳能电池中唯一与外界环境大范围接触的封装材料,因此背板必须具有良好的抗环境侵蚀能力。此外,太阳能电池的系统电压正在逐渐增大,增强背板的绝缘性可以减少光伏电站逆变器和线缆的数量,增加电站的收益。因此,提高背板的绝缘性也愈来愈重要。
太阳能电池组件的寿命现在一般设定为25年,长时间的户外和较高的系统电压条件下,背板必须具有优良的水汽阻隔性和绝缘性。水蒸气渗透率是衡量太阳能电池背板性能好坏的重要指标之一,水蒸气的渗透会影响到背板的层间粘结力以及与其它封装材料(如EVA)的粘接性能可能导致背板分层失效和背板与EVA脱层使湿气直接接触电池片而使电池片被氧化;局部放电电压是衡量背板绝缘性能好坏的重要指标之一,局部放电较低的背板长期处于较高的系统电压下,会逐步被电老化,甚至会被击穿,存在较大安全隐患。综上所述,增强背板水汽阻隔性和绝缘性对提高电池组件寿命有重要意义。
现有的背板阻隔技术主要采用以下三种方法:一种方法为在背板的结构中增加金属膜层,如专利CN 104105749 A公开了一种高阻隔背板,将金属膜,例如,铝箔、铜箔、不锈钢箔同基材复合,虽然这种方法可以增强背板的水汽阻隔性,但背板局部放电电压降低,绝缘性能下降。第二中方法为在背板的至少一层上蒸镀SiO2,例如专利CN 202977464 U公开了一种高阻隔背板,在PET基材上通过物理方法蒸镀一层SiO2,该技术缺点是沉积速度较慢,不适宜大规范生产,并且沉积层不均匀,会形成针孔。第三种方法为在背板所用的胶粘剂中加入普通的无机粒子,例如专利CN 105419617 A中公开了一种胶粘剂中添加普通的无机粒子来提高背板水汽阻隔性的方法,该专利中未对层间粘接性能进行具体说明。在胶粘剂中添加普通的无机颗粒后,因与有机树脂相容性差,无机颗粒往往发生团聚现象,会使层间粘接力下降。层间粘接力也是背板的一个重要指标,层间粘接力低会导致背板发生分层,缩短太阳能电池寿命降低。
目前常见的提高背板绝缘性的方法主要有:一种方法为增加背板基材的厚度,如专利CN 202352704U公开了一种高绝缘背板,将两层聚对苯二甲酸乙二醇酯薄膜复合在一起作为基材,可以增加背板局放,但背板厚度过厚,组成材料成本高,;另一种方法为在粘结层中增加无机填料,如专利CN 105006497A公开了一种高绝缘背板,乙烯与其它树脂如丙烯、丁烯、庚烯、醋酸乙烯酯共聚并加入无机填料,如滑石粉、煅烧高岭土、蒙脱土、云母粉等得到改性聚烯烃作为粘接层,提高背板的绝缘性,但是,背板层间粘接性能较差,生产工艺复杂,成本较高,组件难以返修。
发明内容
本发明的目的是提供一种新型高阻隔、高绝缘的太阳能电池背板,它能够增强背板的阻隔性能,并具有较高的绝缘性。
本发明的目的是通过以下技术方案实现的。
一种太阳能电池背板,包括耐候层、基层、粘接层和胶粘剂层,所述胶粘剂层由胶粘剂涂布液涂布干燥得到,所述胶粘剂涂布液的组成及质量份数为:胶粘剂50~95份,有机层状硅酸盐填料5~50份,所述胶粘剂为聚氨酯胶粘剂、丙烯酸酯胶粘剂或环氧树脂胶粘剂中的一种,所述有机层状硅酸盐为两种或两种以上烷基季铵盐修饰的层状硅酸盐。
上述太阳能电池背板,所述胶粘剂涂布液的组成及质量份数为:胶粘剂70-90份;有机层状硅酸盐填料10-30份。
上述太阳能电池背板,所述烷基季铵盐是含有1-3个C8-C18的直链烷基季铵盐。
上述太阳能电池背板,所述有机层状硅酸盐填料由烷基季铵盐修饰的层状硅酸盐A,和由胺基、羟基和/或羧基取代的烷基季铵盐修饰的层状硅酸盐B中的一种或几种组成。
上述太阳能电池背板,所述有机层状硅酸盐填料中由胺基、羟基和/或羧基取代的烷基季铵盐修饰的层状硅酸盐B与烷基季铵盐修饰的层状硅酸盐A的质量比值为0.1-0.5。
上述太阳能电池背板,所述有机层状硅酸盐填料的粒径范围在0.1μm-5μm之间,优选范围为0.1μm-1μm。
上述太阳能电池背板,所述层状硅酸盐是高岭土、蒙脱土、云母、蛭石、滑石中的一种或几种,优选蒙脱土。
有益效果
与现有技术相比,本发明可实现以下效果。
(1)本发明通过在胶粘剂涂布液中加入两种及两种以上烷基季铵盐修饰的层状硅酸盐填料,延长了水分子扩散路径和电荷传输路径,提高了背板的水汽阻隔性和绝缘性,使得背板的WVTR小于等于1.22(g/m2.day),局放大于等于1100V。
(2)本发明通过控制有机层状硅酸盐填料与胶粘剂的质量比,以及有机层状硅酸盐填料的粒径,满足了背板所用胶黏剂的层间粘合性、耐湿热性等常规性能。
(3)本发明中通过控制烷基季铵盐修饰的层状硅酸盐A和由胺基、羟基和/或羧基取代的烷基季铵盐修饰的层状硅酸盐B的比例,既保证有机层状硅酸盐填料在胶粘剂涂布液中均匀分散,又保证了胶粘剂层的粘接效果。
(4)本发明中的太阳能电池背板具有阻隔性能优异、绝缘性能良好、层间粘接性能强、涂层致密、生产工艺简单的特点。
具体实施方式
本发明包括耐候层、基层、粘接层和胶粘剂层,所述胶粘剂层由胶粘剂涂布液涂布干燥得到,所述胶粘剂涂布液的组成及质量份数为:胶粘剂50~95份,有机层状硅酸盐填料5~50份,所述胶粘剂为聚氨酯胶粘剂、丙烯酸酯胶粘剂或环氧树脂胶粘剂中的一种,所述有机层状硅酸盐为两种或两种以上烷基季铵盐修饰的层状硅酸盐。
在背板中,各层的透水率都影响背板的透水率。因此,降低胶粘剂层的透水率是降低背板透水率的方法之一。
天然层状硅酸盐具有亲水疏油的特性,将其直接与胶粘剂共混很难得到均匀分散的胶粘剂层状硅酸盐混合物,同时胶粘剂中聚合物的大分子链也无法进入层状硅酸盐片层结构中间,无法让层状硅酸盐剥离成纳米片层结构。因此,一般需要对天然层状硅酸盐进行表面有机改性,以增强其与有机溶剂、树脂的相容性。有机官能团修饰的层状硅酸盐疏水性增强,对水汽阻隔有利,并且有机官能团修饰的层状硅酸盐层间间距增大,容易发生聚合物插层反应和剥离分层。而且,经过有机官能团修饰的层状硅酸盐能够较好地分散于胶粘剂中,剥离开的片层易与胶粘剂聚合物分子形成界面层,使电荷迁移途径变长,有效阻止了局部放电的进一步发展,改善了背板的绝缘性和使用寿命。
本发明中有机官能团为烷基季铵盐。本发明中所述胶粘剂涂布液的组成及质量份数为:胶粘剂50~95份,有机层状硅酸盐填料5~50份;优选胶粘剂70~90份,有机层状硅酸盐填料10~30份。胶粘剂涂布液中有机层状硅酸盐填料的质量份数不足5份时阻隔效果不显著。有机层状硅酸盐填料的质量份数在10-30份时,胶粘剂的粘接力明显增加,背板水汽阻隔性和绝缘性能明显提高。当胶粘剂涂布液中有机层状硅酸盐填料质量份数超过50份时,有机层状硅酸盐填料会发生团聚,使胶粘剂层致密性下降,背板水汽透过率增加,且背板的层间粘接力也会随之下降。
本发明中所述烷基季铵盐中含有1-3个C8-C18的直链烷基季铵盐。较长的烷基分子链在层状硅酸盐片层间以一定方式排列,可使层状硅酸盐层间距增加,有利于胶粘剂中的聚合物单体或大分子插入层状硅酸盐片层中。碳链长度少于八个碳时,有机官能团修饰的层状硅酸盐不易剥离分离;碳链长度大于十八个碳时,有机官能团不易插入层状硅酸盐层间。借助片层高的纵横比,胶粘剂内部形成曲折通道,延长了水分子扩散路径,对水汽起到阻隔功效。此外,烷基季铵盐修饰的层状硅酸盐层间距也随着季铵盐中烷基链个数增加而增大,但烷基链数应在1-3个之内,大于3个烷基链不利于聚合物分子的插层反应。
本发明中所述直链烷基季铵盐中的直连结构优选为十二烷基、十六烷基、十八烷基、双-十二烷基、双-十六烷基、双-十八烷基、三-十二烷基、三-十六烷基、三-十八烷基,更优为双-十六链烷基、双-十八链烷基。
本发明中所述有机层状硅酸盐填料由烷基季铵盐修饰的层状硅酸盐A,和由胺基、羟基和/或羧基取代的烷基季铵盐修饰的层状硅酸盐B中的一种或几种组成。
表面带有不同官能团的层状硅酸盐层间间距不同,烷基季铵盐修饰的层状硅酸盐层间距较大,羟基、羧基、胺基官能团取代的烷基季铵盐修饰的层状硅酸盐层间距较小,插入和层间剥离性能较困难,但羟基、羧基、胺基官能团可以与胶粘剂中的固化剂-NCO基团发生反应,使两相界面处更加致密。将烷基季铵盐修饰的层状硅酸盐和羟基、羧基、胺基取代的烷基季铵盐修饰的层状硅酸盐填料共混复配,不但可以增强背板的水汽阻隔性能,还可以保持粘接层与基材的粘接力,可以将背板水汽透过率降低到0.8g/m2.day。
羟基、胺基、羧基官能团中胺基官能团与-NCO基团反应最快,其次是羟基基团、羧基基团。羧基基团的亲水性较强,在水汽存在条件下会发生解离,使得胶粘剂绝缘性下降,此外,羟基官能团的亲水性相对胺基也较强。因此,本发明烷基季铵盐修饰的层状硅酸盐优选为烷基季铵盐修饰的层状硅酸盐与胺基取代的烷基季铵盐修饰的层状硅酸盐。
本发明中所述有机层状硅酸盐填料中由胺基、羟基和/或羧基取代的烷基季铵盐修饰的层状硅酸盐中B与烷基季铵盐修饰的层状硅酸盐A的质量比为0.1-0.5。当两者比例低于0.1时,胶粘剂层间粘接力较小;当两者比例超过0.5时,羟基、胺基、羧基官能团取代的烷基季铵盐修饰的层状硅酸盐在胶粘剂涂布液中会发生团聚。
本发明中所述层状硅酸盐是高岭土、蒙脱土、云母、蛭石、滑石中的一种或几种,优选为蒙脱土。烷基季铵盐修饰的蒙脱土层间距较大,范围在为2.4-4.0nm,易于插层反应和剥离。
本发明中通过高剪切或机械研磨方法可以将有机层状硅酸盐填料的粒径控制在0.1μm-5μm范围之间。当有机层状硅酸盐填料粒径小于0.1μm时,有机层状硅酸盐填料不易分散;而粒径大于5μm时,胶粘剂涂布液中有机层状硅酸盐填料会发生团聚。为了便于有机层状硅酸盐填料在胶粘剂中易于分散和达到最佳的性能,有机层状硅酸盐填料的粒径范围优选为0.1μm-1μm。
本发明中所述胶粘剂层中的胶粘剂为聚氨酯胶粘剂、丙烯酸酯胶粘剂或环氧树脂胶粘剂中的一种。
本发明中所述耐候层是聚偏氟乙烯薄膜(PVDF)、聚氟乙烯薄膜(PVF)、乙烯-四氟乙烯共聚物薄膜(ETFE)或含氟碳树脂的涂层中的一种。
本发明中所述基层是聚对苯二甲酸乙二醇酯(PET)薄膜、聚对苯二甲酸丁二醇酯(PBT)薄膜或聚对萘二甲酸乙二醇酯(PEN)薄膜中的一种。
本发明中所述粘接层是聚乙烯薄膜、聚丙烯薄膜、聚酰胺薄膜或含氟碳树脂的涂层中的一种。
本发明中所述胶粘剂为公知的市售产品。有机层状硅酸盐填料即可采用公知的市售产品,也可用公知的方法合成。市售产品选自美国Nanocor公司Nanomer系列产品、美国Southern Clay Products公司Cloisite系列产品以及浙江丰虹新材料股份有限公司Nanolin DK系列产品。羟基取代的烷基季铵盐修饰的层状硅酸盐B可以是NanomerI.34TCN、Nanolin DK2以及Cloisite 30B中的一种或几种。羧基取代的烷基季铵盐修饰的层状硅酸盐B可以是Nanomer I.24TL、Nanolin DK5的一种或几种。胺基取代的烷基季铵盐修饰的层状硅酸盐B可以是Nanomer I.30P、Nanomer I.31Ps以及Nanolin DK1N。烷基季铵盐修饰的层状硅酸盐A可以是Nanomer 1.44P、Cloisite 15A、Cloisite 20A以及NanolinDK4的一种或几种。以上市售有机层状硅酸盐填料结构上均含有1-2个C16或C17的烷基直链。
下面结合实施例对本发明做优选的说明,但本发明的保护范围并不限于此。
实施例1
取聚氨酯胶粘剂100g,双八烷基二甲基铵盐修饰的云母10.1g,双羟乙基八烷基三乙基铵盐修饰的云母1.05g。混合均匀后进行高剪切分散,有机层状硅酸盐填料混合物粒径为0.1μm,得到1号胶粘剂。
在厚度为250μm的PET一侧涂布含氟碳树脂的涂层,另一侧涂布1号胶粘剂,复合60μm的聚乙烯薄膜,经熟化后得到太阳能电池背板,测其性能。
实施例2
取环氧树脂胶粘剂100g,双十八烷基二甲基铵盐修饰的高岭土3.51g,三甲基十八烷基羧酸铵盐修饰的高岭土1.75g。混合均匀后进行高剪切分散,有机层状硅酸盐粒径约为5μm,得到2号胶粘剂。
在厚度为250μm的PEN一侧涂布2号胶粘剂,复合25μm的PVF薄膜。另一侧涂布含氟碳树脂的内粘结涂层,经熟化后得到太阳能电池背板,测其性能。
实施例3
取丙烯酸胶粘剂100g,Cloisite 20A 71.4g,Nanomer I.34TCN 10g,Nanolin DK58.3g,NanomerI.31 Ps 10.3g混合均匀后进行高剪切分散,有机层状硅酸盐粒径约为2.5μm,得到3号胶粘剂。
在厚度为250μm的PBT一侧涂布3号胶粘剂,复合20μm的PVDF薄膜。另一侧涂布3号胶粘剂,复合60μm的聚酰胺薄膜,经熟化后得到太阳能电池背板,测其性能。
实施例4
取丙烯酸胶粘剂100g,Cloisite 15A 19.23g,Nanomer I.31 Ps 5.77g混合均匀后进行高剪切分散,有机层状硅酸盐粒径约为0.5μm,得到4号胶粘剂。
在厚度为250μm的PET一侧涂布4号胶粘剂,复合20μm的PVDF薄膜。另一侧涂布4号胶粘剂,复合60μm的聚乙烯薄膜,经熟化后得到太阳能电池背板,测其性能。
实施例5
取环氧树脂胶粘剂100g,双十二烷基二乙基铵盐修饰的蒙脱土30.34g,十二烷基羧酸三甲基铵盐修饰的蒙脱土3.59g,双羟乙基十二烷基三甲基铵盐修饰的蒙脱土4.00g混合均匀后进行高剪切分散,层状硅酸盐粒径约为1μm,得到5号胶粘剂。
在厚度为250μm的PET一侧涂布5号胶粘剂,复合20μm的PVDF薄膜。另一侧涂布5号胶粘剂,复合60μm的聚丙烯薄膜,经熟化后得到太阳能电池背板,测其性能。
对比例1
取丙烯酸胶粘剂100g,在厚度为250μm的PET一侧涂布丙烯酸胶粘剂层,复合25μm的PVF薄膜。另一侧涂布丙烯酸胶粘剂层,复合60μm的聚乙烯薄膜,经熟化后得到太阳能电池背板,测其性能。
对比例2
取聚氨酯胶粘剂100g,云母25g。混合均匀后进行高剪切分散,
层状硅酸盐粒径约为10μm,得到6号胶粘剂。在厚度为250μm的PEN一侧涂布6号胶粘剂层,复合25μm的PVF薄膜。另一侧涂布6号胶粘剂层,复合60μm的聚乙烯薄膜,经熟化后得到太阳能电池背板,测其性能。
表1为各实施例、对比例性能数据表。
由表1可知,本发明在胶粘剂涂布液中添加了有机层状硅酸盐填料,使得背板的WVTR小于等于1.22(g/m2.day),局放大于等于1100V,增强了背板的耐候性,延长了太阳能电池的使用寿命。
性能测试方法如下:
1.背板水透过率(WVTR):
按照ASTM F1249-06标准测试,测试条件38℃,90%RH。
PCT老化条件:(121℃,100%RH)
2.耐候层/PET粘结力测试:
按GB/T 9286-1998的规定进行测试。粘结力为0级视为合格。
3.粘接层/PET粘结力测试:
使用型号为ETM-104B的万能拉力机进行测试。粘结力大于5N/cm视为合格。
4.背板局放测定:
参照标准IEC 61730《光伏(PV)组件安全鉴定》进行测试,局部放电在1000V以上。
Claims (8)
1.一种太阳能电池背板,包括耐候层、基层、粘接层和胶粘剂层,其特征在于,所述胶粘剂层由胶粘剂涂布液涂布干燥得到,所述胶粘剂涂布液的组成及质量份数为:胶粘剂50~95份,有机层状硅酸盐填料5~50份,所述胶粘剂为聚氨酯胶粘剂、丙烯酸酯胶粘剂或环氧树脂胶粘剂中的一种,所述有机层状硅酸盐为两种或两种以上烷基季铵盐修饰的层状硅酸盐。
2.根据权利要求1所述太阳能电池背板,其特征在于,所述胶粘剂涂布液的组成及质量份数为:胶粘剂70-90份;有机层状硅酸盐填料10-30份。
3.根据权利要求1或2所述太阳能电池背板,其特征在于,所述烷基季铵盐是含有1-3个C8-C18的直链烷基季铵盐。
4.根据权利要求3所述太阳能电池背板,其特征在于,所述有机层状硅酸盐填料由烷基季铵盐修饰的层状硅酸盐A,和由胺基、羟基和/或羧基取代的烷基季铵盐修饰的层状硅酸盐B中的一种或几种组成。
5.根据权利要求4所述太阳能电池背板,其特征在于,所述有机层状硅酸盐填料中由胺基、羟基和/或羧基取代的烷基季铵盐修饰的层状硅酸盐B与烷基季铵盐修饰的层状硅酸盐A的质量比值为0.1-0.5。
6.根据权利要求5所述太阳能电池背板,其特征在于,所述有机层状硅酸盐填料的粒径为0.1μm-5μm。
7.根据权利要求5所述太阳能电池背板,其特征在于,所述有机层状硅酸盐填料的粒径为0.1μm-1μm。
8.根据权利要求6所述太阳能电池背板,其特征在于,所述层状硅酸盐是高岭土、蒙脱土、云母、蛭石或滑石中的一种或几种。
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