CN110144182B - Ultraviolet absorber, adhesive, solar cell back sheet, and solar cell - Google Patents
Ultraviolet absorber, adhesive, solar cell back sheet, and solar cell Download PDFInfo
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- CN110144182B CN110144182B CN201910397170.0A CN201910397170A CN110144182B CN 110144182 B CN110144182 B CN 110144182B CN 201910397170 A CN201910397170 A CN 201910397170A CN 110144182 B CN110144182 B CN 110144182B
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- solar cell
- adhesive
- ultraviolet
- polymer
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- 239000000853 adhesive Substances 0.000 title claims abstract description 92
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 92
- 239000006097 ultraviolet radiation absorber Substances 0.000 title claims abstract description 48
- 229920000642 polymer Polymers 0.000 claims abstract description 73
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims abstract description 38
- 238000010521 absorption reaction Methods 0.000 claims abstract description 33
- 239000010410 layer Substances 0.000 claims description 49
- 239000012790 adhesive layer Substances 0.000 claims description 45
- 239000012948 isocyanate Substances 0.000 claims description 34
- 150000002513 isocyanates Chemical class 0.000 claims description 32
- 229920005906 polyester polyol Polymers 0.000 claims description 29
- -1 amine compounds Chemical class 0.000 claims description 23
- 238000012360 testing method Methods 0.000 claims description 23
- 239000000178 monomer Substances 0.000 claims description 16
- 239000007822 coupling agent Substances 0.000 claims description 11
- 238000002834 transmittance Methods 0.000 claims description 10
- 125000004185 ester group Chemical group 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical group NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims description 3
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 3
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 3
- MMKQUGHLEMYQSG-UHFFFAOYSA-N oxygen(2-);praseodymium(3+) Chemical compound [O-2].[O-2].[O-2].[Pr+3].[Pr+3] MMKQUGHLEMYQSG-UHFFFAOYSA-N 0.000 claims description 3
- 229910003447 praseodymium oxide Inorganic materials 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 abstract description 40
- 230000002745 absorbent Effects 0.000 abstract description 40
- 230000006750 UV protection Effects 0.000 abstract description 14
- 238000004383 yellowing Methods 0.000 abstract description 11
- 230000005012 migration Effects 0.000 abstract description 10
- 238000013508 migration Methods 0.000 abstract description 10
- 230000032798 delamination Effects 0.000 abstract description 7
- 239000011229 interlayer Substances 0.000 abstract description 7
- 238000009776 industrial production Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 69
- 229920005862 polyol Polymers 0.000 description 17
- 150000003077 polyols Chemical class 0.000 description 15
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 14
- 229910000420 cerium oxide Inorganic materials 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 13
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 13
- 239000000203 mixture Substances 0.000 description 11
- 239000006096 absorbing agent Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 8
- 239000002245 particle Substances 0.000 description 6
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- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 2
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- 229920001577 copolymer Polymers 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
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- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
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- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229940124543 ultraviolet light absorber Drugs 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- 239000005058 Isophorone diisocyanate Substances 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
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- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000655 anti-hydrolysis Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 238000004132 cross linking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
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- 238000007606 doctor blade method Methods 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000003960 organic solvent Substances 0.000 description 1
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- 229920000570 polyether Polymers 0.000 description 1
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- 239000002861 polymer material Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002620 polyvinyl fluoride Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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
- C09J11/08—Macromolecular additives
-
- 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
- C09J175/06—Polyurethanes from polyesters
-
- 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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
-
- 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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/204—Applications use in electrical or conductive gadgets use in solar cells
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/322—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of solar panels
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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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
-
- 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
- C09J2475/00—Presence of polyurethane
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- 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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides an ultraviolet absorber, an adhesive, a solar cell back sheet and a solar cell. The ultraviolet absorber includes: the polymer with ultraviolet absorption function and the rare earth oxide form a conjugate. The ultraviolet absorbent has excellent ultraviolet resistance, high stability, good weather resistance, low yellowing, low migration and small using amount, can ensure that the initial cohesive force of the adhesive is large and the transparency is good, further ensures that the solar cell back plate has good durability, is not easy to generate interlayer delamination phenomenon, has attractive appearance and good commercial prospect, and has simple production process, lower cost and easy industrial production.
Description
Technical Field
The invention relates to the technical field of photovoltaics, in particular to an ultraviolet absorbent, an adhesive, a solar cell back plate and a solar cell.
Background
In the practical application process of the existing ultraviolet absorbent, the adhesive can be prevented from yellowing only by using a large amount of the ultraviolet absorbent. However, a larger amount of uv absorber seriously affects the initial adhesion of the adhesive and also increases the risk of interlayer delamination of the solar cell backsheet.
Thus, the related art of the existing ultraviolet absorber still needs to be improved.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
The present invention has been completed based on the following findings of the inventors:
the ultraviolet absorbent in the related art is easily decomposed by heating, and is easily migrated to the surface through the change of environmental temperature after being placed for a long time, so that the adhesive has a weak interface phenomenon, failure is caused, and the solar cell back plate is layered; in addition, in the adhesive of the related art, if the usage amount of the ultraviolet absorber is too low, the adhesive may be quickly yellowed, and if the usage amount is too high, the initial adhesive performance of the adhesive solution may be affected.
Based on the ultraviolet absorbent, in the using process, the polymer with the ultraviolet absorption function and the rare earth oxide are matched with each other to play a synergistic effect. Firstly, in the early stage of the action of the ultraviolet absorbent, the polymer with the ultraviolet absorption function with higher content plays the main role of absorbing ultraviolet rays, the polymer with the ultraviolet absorption function can be gradually consumed along with the prolonging of the service time, and when the effective content of the polymer with the ultraviolet absorption function is reduced, the rare earth oxide also plays the main role of absorbing ultraviolet rays. Secondly, the ultraviolet absorbent contains the ultraviolet absorbent with two structures of organic and inorganic, after the organic absorbent is consumed, the rare earth oxide can absorb the ultraviolet energy by changing the electronic structure of the rare earth oxide when absorbing the ultraviolet, so the rare earth oxide is not consumed when absorbing the ultraviolet, the consumption rate of the whole ultraviolet absorbent by the ultraviolet can be reduced, and the ultraviolet absorbent has longer ultraviolet resistance. Further, since the structure of the polymer having an ultraviolet absorbing function is that the functional ultraviolet absorbing functional group is in the branch of the polymer, even if a part of the polymer having an ultraviolet absorbing function is consumed by ultraviolet rays, the molecular structure of the formed polymer is not decomposed to affect the stability of the ultraviolet absorber, resulting in the migration thereof. In addition, in the ultraviolet absorbent, because the polymer with the ultraviolet absorption function and the rare earth oxide both contain functional groups capable of reacting with the adhesive, the phenomena of phase separation and surface migration of the adhesive, failure caused by the adhesive, and delamination of a solar cell back plate can be prevented. Furthermore, the proportion of the polymer with the ultraviolet absorption function and the rare earth oxide in the adhesive is optimized, so that the ultraviolet resistance of the ultraviolet absorbent is excellent, the stability is high, the weather resistance is good, the yellowing is low, the migration is low, the using amount is small, the initial binding power of the adhesive is large, and the transparency is good.
In view of the above, an object of the present invention is to provide an ultraviolet absorber that has excellent ultraviolet resistance, high stability, good weather resistance, low yellowing, low migration, less usage amount, simple production process, low cost, easy realization of industrial production, large initial adhesion of an adhesive, good transparency, good durability of a solar cell back sheet, no interlayer delamination, good appearance, or good commercial prospect.
In one aspect of the invention, the invention provides an ultraviolet light absorber. According to an embodiment of the present invention, the ultraviolet absorber includes: the polymer with ultraviolet absorption function and the rare earth oxide form a conjugate. The inventor finds that the ultraviolet absorbent has excellent ultraviolet resistance, high stability, good weather resistance, low yellowing, low migration and small using amount, can ensure that the initial bonding force of the adhesive is large and the transparency is good, further ensures that the solar cell back plate has good durability, is not easy to generate interlayer delamination, has attractive appearance and good commercial prospect, and has simple production process, low cost and easy industrial production.
According to an embodiment of the present invention, the polymer having an ultraviolet absorbing function satisfies at least one of the following conditions: the polymer contains ester groups, and monomers for forming the polymer comprise hindered amine compounds, and the molecular weight of the hindered amine compounds is 2000-3500.
According to an embodiment of the invention, the monomer contains a 2, 2, 6, 6-tetramethylpiperidinyl group.
According to an embodiment of the present invention, the polymer having an ultraviolet absorbing function includes at least one of compounds of the following structural formula:
wherein R or R1Comprising C4～9Alkyl radical, C4～9Ether radical, C4～9Ester group, C4～9Ureido radical, C4～9A carbamate group; the value range of n is 12-20.
According to an embodiment of the present invention, the rare earth oxide satisfies at least one of the following conditions: comprises at least one of lanthanum oxide, cerium dioxide and praseodymium oxide, and the particle size is 50 nm-100 nm.
According to an embodiment of the present invention, the polymer having an ultraviolet absorbing function and the rare earth oxide are coupled together by a coupling agent.
According to an embodiment of the invention, the conjugate is formed by: reacting a coupling agent with the rare earth oxide to obtain a pre-conjugate; reacting the polymer with the ultraviolet absorption function with the pre-conjugate so as to obtain the conjugate, wherein the mass ratio of the polymer with the ultraviolet absorption function to the pre-conjugate is 4: 0.95 to 1.2.
According to an embodiment of the invention, the coupling agent comprises a silane coupling agent.
In another aspect of the invention, the invention provides an adhesive. According to an embodiment of the invention, the adhesive comprises a high polymer formed from the following monomers: polyols, isocyanates, UV absorbers as described above. The inventor finds that the ultraviolet absorbent can participate in the curing reaction of the polyol and the isocyanate, so that the molecules of the polyol, the isocyanate and the ultraviolet absorbent in the adhesive are more fully intertwined, the initial cohesive force of the adhesive is large, the ultraviolet resistance of the ultraviolet absorbent is excellent, the transparency of the adhesive is good, the durability of the solar cell back panel comprising the adhesive is good, the interlayer delamination phenomenon is not easy to occur, and the appearance is attractive and the commercial prospect is good.
According to an embodiment of the invention, the polyol comprises a polyester polyol.
According to an embodiment of the invention, the adhesive comprises a high polymer formed from the following monomers: 23 to 28 parts by weight of the polyester polyol, 1 to 1.5 parts by weight of the isocyanate, and 0.25 to 0.9 part by weight of the ultraviolet absorber.
In yet another aspect of the present invention, a solar cell backsheet is provided. According to an embodiment of the present invention, the solar cell back sheet includes: a bonding layer; a first adhesive layer disposed on a surface of the adhesive layer; a support layer disposed on a surface of the first adhesive layer distal from the adhesive layer; the second adhesive layer is arranged on the surface, far away from the first adhesive layer, of the supporting layer; and a weathering layer disposed on the surface of the support layer remote from the second adhesive layer, wherein at least one of the first adhesive layer and the second adhesive layer is formed by the adhesive described above. The inventor finds that the solar cell back plate is good in durability, attractive in appearance and good in commercial prospect, and interlayer layering is not easy to occur.
According to an embodiment of the present invention, the solar cell back sheet satisfies at least one of the following conditions: the adhesion grade of the weather-resistant layer is not lower than 0 grade, and after a double 85 test for 1000 hours, the adhesion grade is not lower than 0 grade; the peel strength of the bonding layer is not less than 7.6N/cm, and after a double 85 test is carried out for 1000 hours, the peel strength is not less than 7.0N/cm; the light transmittance is not less than 88.6%, and after a double 85 test for 1000h, the light transmittance is not less than 88.3%; the haze is not more than 7.3%, and after the double 85 test is carried out for 1000h, the haze is not more than 10.8%; passing through 60 kw.h/m2The yellowness index delta b of the weather-resistant layer is not more than 1.5 after being irradiated by ultraviolet light.
In yet another aspect of the present invention, a solar cell is provided. According to an embodiment of the present invention, the solar cell includes: a solar cell sheet; the adhesive layer is formed on the surface of the solar cell piece; and the solar cell backboard is arranged on the surface of the solar cell sheet far away from the adhesion layer, and the adhesion layer of the solar cell backboard is contacted with the adhesion layer. The inventor finds that the solar cell has long service life, excellent service performance and good commercial prospect.
The invention has the following beneficial technical effects:
1. the polymer with the ultraviolet absorption function has ester groups which are the same as those of the adhesive, and can be intertwined with the high polymer formed by the polyalcohol and the isocyanate when being applied to the adhesive, so that the polymer cannot migrate to the surface of the adhesive in the using process to cause the failure of the adhesive.
2. The adhesive uses a conjugate formed by a polymer with an ultraviolet absorption function and a rare earth oxide as an ultraviolet absorbent, so that the adhesive can effectively resist the aging effect of ultraviolet rays on the adhesive for a long time, and can reduce the yellowing of the adhesive after being applied to a solar cell backboard, so that the solar cell backboard has higher transparency and is more attractive.
3. The polymer with the ultraviolet absorption function, especially the hindered amine compound, can react with the rare earth oxide and also participate in the curing reaction of the adhesive, so that the rare earth oxide is not agglomerated and is uniformly dispersed.
4. Through the selection of the polymer material with the ultraviolet absorption function, the mixing and the coupling with the rare earth oxide, the ultraviolet resistance of the adhesive is improved, and the requirements of the transparent solar cell back panel on the ultraviolet resistance and the beauty are met.
Drawings
FIG. 1 shows a schematic flow diagram of a method of preparing a conjugate according to one embodiment of the present invention.
Fig. 2 shows a schematic cross-sectional structure of a solar cell back sheet according to an embodiment of the present invention.
Fig. 3 shows a schematic cross-sectional structure of a solar cell according to an embodiment of the present invention.
Reference numerals:
10: solar cell 100: solar cell back sheet 110: bonding layer 120: first adhesive layer 130: support layer 140: second adhesive layer 150: weather-resistant layer 200: solar cell sheet 300: adhesive layer
Detailed Description
The following describes embodiments of the present invention in detail. The following examples are illustrative only and are not to be construed as limiting the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
In one aspect of the invention, the invention provides an ultraviolet light absorber. According to an embodiment of the present invention, the ultraviolet absorber includes: the polymer with ultraviolet absorption function and the rare earth oxide form a conjugate. The inventor finds that the ultraviolet absorbent has excellent ultraviolet resistance, high stability, good weather resistance, low yellowing, low migration and small using amount, can ensure that the initial bonding force of the adhesive is large and the transparency is good, further ensures that the solar cell back plate has good durability, is not easy to generate interlayer delamination, has attractive appearance and good commercial prospect, and has simple production process, low cost and easy industrial production.
According to an embodiment of the present invention, the polymer having an ultraviolet absorbing function contains an ester group. Most of the existing adhesives are formed by the curing reaction of polyester polyol and isocyanate, when the polymer containing ester groups is added into the adhesive as an ultraviolet absorbent, the polymer is the same as the main functional groups of the polyester polyol in the adhesive, and the compatibility between the polyester polyol and the adhesive is better according to the principle of similarity and intermiscibility, so that the ultraviolet absorbent and other components in the adhesive can be dissolved more fully, the ultraviolet absorbent can not migrate, and the effects of ultraviolet resistance, yellowing resistance and aging resistance can be better exerted.
According to the embodiment of the invention, the molecular weight of the polymer with the ultraviolet absorption function can be 2000-3500. In some embodiments of the present invention, the molecular weight may be specifically 2000, 2500, 2800, 3000, 3200, 3500, and the like, so that the polymer having an ultraviolet absorption function can enable molecules to have enough ester groups, further, the stability of the polymer in a process of absorbing ultraviolet rays is good, the molecular weight of the polymer is moderate, the molecular weight is too low, the intertwining effect of a molecular main chain and an adhesive system is not obvious, and an obvious migration phenomenon can occur; the longer the length of the molecular main chain is, the lower the number of hindered amine organic molecules is, the dispersion of the hindered amine organic molecules in an adhesive system is influenced, and the bonding effect of the adhesive system is finally influenced.
According to an embodiment of the present invention, if the monomer forming the polymer includes a hindered amine compound, the uv absorption performance of the hindered amine compound is more prominent than that of other polymers, and when the monomer forming the polymer includes a hindered amine compound, the polymer and the rare earth oxide can further cooperate and cooperate with each other, so that the uv absorber does not migrate, and the duration of the uv resistance is significantly increased.
According to the embodiment of the present invention, further, when the monomer contains 2, 2, 6, 6-tetramethylpiperidyl, the ultraviolet absorption performance is better than that of other hindered amine compounds, so that when the monomer contains 2, 2, 6, 6-tetramethylpiperidyl, in the prepared ultraviolet absorbent, the polymer and the rare earth oxide can further perform the coordination and synergistic effect, so that the duration of the ultraviolet resistance performance is further prolonged.
According to an embodiment of the present invention, still further, the polymer having an ultraviolet absorbing function may specifically include a compound of the following structural formula:
wherein, R or R1Comprising C4～9Alkyl radical, C4～9Ether radical, C4～9Ester group, C4～9Ureido radical, C4～9A carbamate group; the value range of n is 12-20, and the effective functional group 2, 2, 6, 6-tetramethyl piperidyl exists as a branched chain and is substituted by the sameIn the molecular structure of the polymer, the polymer is coupled with rare earth oxide in an ultraviolet absorbent, so that after the ultraviolet absorbent absorbs ultraviolet rays, even if the 2, 2, 6, 6-tetramethyl piperidyl is decomposed by the ultraviolet rays, the stability of the whole polymer structure is not influenced.
According to an embodiment of the present invention, further, the polymer having an ultraviolet absorption function may be Mark LA 63 or p.d.s (note that both Mark LA 63 and p.d.s are trade names of commercial organic ultraviolet absorbers), and the 2, 2, 6, 6-tetramethylpiperidyl group as a side chain exists in the molecular structure of the polymer and is coupled with a rare earth oxide in an ultraviolet absorber, so that even if the 2, 2, 6, 6-tetramethylpiperidyl group is decomposed by ultraviolet rays after the ultraviolet absorber absorbs ultraviolet rays, the stability of the entire polymer structure is not affected.
According to the embodiment of the present invention, the rare earth oxide may include lanthanum oxide, cerium oxide, praseodymium oxide, etc., and may also play a good role in absorbing ultraviolet rays.
According to the embodiment of the present invention, further, when cerium oxide is selected as the rare earth oxide, the cerium oxide is sufficiently matched with the polymer having the ultraviolet absorption function, and preferably performs a synergistic effect with the polymer having the ultraviolet absorption function, and the cerium oxide has a good ultraviolet absorption property, is not consumed in absorbing ultraviolet rays, and slows down the consumption rate of the entire ultraviolet absorber after being coupled with the polymer having the ultraviolet absorption function.
According to an embodiment of the present invention, the particle size of the rare earth oxide may be 50nm to 100 nm. In some embodiments of the invention, the particle size may be specifically 50nm, 60nm, 70nm, 80nm, 90nm, 100nm, and the like. Therefore, when the particle size of the rare earth oxide forming the ultraviolet absorbent is 50-100 nm, the coupling degree of the rare earth oxide and the polymer with the ultraviolet absorption function is good, so that the stability of the ultraviolet absorbent is good, and the particle size of the rare earth oxide is moderate, so that the particle size of the formed ultraviolet absorbent is not too large, and the transmittance of the adhesive is not influenced; the rare earth oxide is not easy to agglomerate due to too small size, and the stability of the ultraviolet absorbent is not influenced.
According to an embodiment of the present invention, the polymer having an ultraviolet absorbing function and the rare earth oxide are coupled together by a coupling agent. According to an embodiment of the invention, referring to fig. 1, the conjugate is formed by the following steps:
s100: and reacting the coupling agent with the rare earth oxide to obtain the pre-conjugate.
According to an embodiment of the invention, the mass of the coupling agent is 0.5% to 1.5% of the mass of the rare earth oxide. In some embodiments of the invention, the mass of the coupling agent is 1.0% of the mass of the rare earth oxide, which may facilitate formation of the pre-conjugate, and thus subsequent formation of the conjugate.
According to the embodiment of the invention, the coupling agent comprises a silane coupling agent, and the silane coupling agent can be gamma-glycidyl ether propyl trimethoxy silane, so that the pre-coupling compound and the polymer with the ultraviolet absorption function can be coupled conveniently.
S200: reacting the polymer having an ultraviolet absorbing function with the pre-conjugate to obtain the conjugate.
According to the embodiment of the invention, the mass ratio of the polymer with the ultraviolet absorption function to the pre-conjugate is 4: 0.95 to 1.2. Therefore, the ultraviolet absorbent has the advantages of excellent ultraviolet resistance, high stability, good weather resistance, low yellowing, low migration and small using amount, can ensure that the initial adhesive force of the adhesive is large, the transparency is good, the yellowing of the adhesive at the later stage of aging is increased when the using amount of the polymer with the ultraviolet absorption function is too high, and the unstable initial adhesive force is not easily caused when the using amount is too low, and the cost control is not facilitated.
In some embodiments of the invention, further, the mass ratio is 4: 1, compared with other proportions, the formed conjugate can better cooperate with the polymer with the ultraviolet absorption function and the rare earth oxide to play a synergistic effect.
In another aspect of the invention, the invention provides an adhesive. According to an embodiment of the invention, the adhesive comprises a high polymer formed from the following monomers: polyol isocyanates the ultraviolet absorbers previously described. The inventors have found that the ultraviolet absorber can participate in the curing reaction of the polyol and the isocyanate, so that molecules of the polyol, the isocyanate and the ultraviolet absorber in the adhesive are entangled with each other more sufficiently, migration is not easy to occur, and the initial adhesive force of the adhesive is large.
According to an embodiment of the invention, the adhesive contains a high polymer formed from monomeric polyol, isocyanate and the aforementioned UV absorber. It should be noted that the term "monomer" is used herein in a broad sense, i.e., a raw material that generates a polymer having a larger molecular weight after a curing reaction (the curing reaction refers to a process of converting a substance from a low molecular weight to a high molecular weight, and includes a polymerization reaction and a crosslinking reaction). In the present invention, the monomer includes not only the polyol and the isocyanate but also the ultraviolet absorber described above.
According to embodiments of the present invention, the polyol includes polyester polyol, polyether polyol, acrylate polyol, and the like. In some embodiments of the present invention, the polyol may be specifically a polyester polyol.
According to the embodiment of the present invention, the kind of the isocyanate may include, but is not limited to, toluene diisocyanate, diphenylmethane diisocyanate, 4' -dicyclohexylmethane diisocyanate, hexamethylene diisocyanate and its adduct, isophorone diisocyanate and its adduct, isocyanurate body, and biuret body, etc., and may also be a mixture of any two or three of the above. According to an embodiment of the present invention, the ultraviolet absorber may be the aforementioned ultraviolet absorber. Because the ultraviolet absorbent can participate in the curing reaction of the polyol and the isocyanate, the molecules of the polyol, the isocyanate and the ultraviolet absorbent in the adhesive are entangled with each other more fully.
In some embodiments of the present invention, the polyol comprises a polyester polyol and the previously described UV absorbers also contain ester groups. Therefore, when the polymer containing ester groups is added into the adhesive, the main functional groups of the polymer are the same as the main functional groups of polyester polyol in the adhesive, and the compatibility between the polymer and the polyester polyol is better according to the principle of similar compatibility.
According to an embodiment of the invention, the adhesive comprises a high polymer formed from the following monomers: 23 to 28 parts by weight of the polyester polyol; 1 to 1.5 parts by weight of the isocyanate; and 0.25 to 0.9 weight part of the ultraviolet absorbent, and the proportion ensures that the mutual matching and the synergistic action of the components can be better played, and is beneficial to the curing reaction among the polyester polyol, the isocyanate and the ultraviolet absorbent. When the three components are subjected to curing reaction, 2, 6, 6-tetramethyl piperidyl in the molecular structure of the ultraviolet absorbent reacts with isocyanate, meanwhile, hydroxyl in polyester polyol also reacts with isocyanate, the three components are subjected to curing reaction, and the molecular structures are mutually crosslinked and wound, so that the initial adhesive force of the adhesive is large; meanwhile, the ultraviolet absorbent participates in the curing reaction of the adhesive, so that the ultraviolet absorption performance of the adhesive is better exerted, the rare earth oxide in the ultraviolet absorbent is not easy to agglomerate, the ultraviolet absorbent is uniformly dispersed in the adhesive, the using amount is small, and each part of the adhesive has excellent ultraviolet resistance and yellowing resistance.
According to the embodiment of the invention, in the ultraviolet absorber of the adhesive, the mass percentage of the solvent is 50-60%. In some embodiments of the present invention, the solvent of the uv absorber is 50%, 52%, 54%, 56%, 58%, 60%, etc. by mass, which makes the uv absorber easier to mix with other components, and facilitates the curing reaction among the polyol, the isocyanate, and the uv absorber.
According to the embodiment of the invention, in the adhesive, an auxiliary agent is also contained. The auxiliary agent may include an antioxidant, an anti-hydrolysis agent, etc., and may be 0.2 to 0.6 parts by weight. In some embodiments of the present invention, the additive may be a mixture of the antioxidant 1010 and the polycarbodiimide hydrolysis-resistant agent, and the content may be specifically 0.2 parts by weight, 0.4 parts by weight, 0.6 parts by weight, etc., so that the antioxidant property and the hydrolysis-resistant property of the adhesive are also better.
According to the embodiment of the invention, the solvent of the adhesive can be an organic solvent such as alkanes, ketones, esters, ethers and the like, and the weight part of the solvent can be 69-75.55 parts. In some embodiments of the present invention, the solvent may be n-heptane, acetone, butanone, ethyl acetate, butyl acetate, ethylene glycol monomethyl ether, etc., and the parts by weight may be 69 parts by weight, 72.3 parts by weight, 75.55 parts by weight, etc., so as to facilitate mutual dissolving and mixing of the components in the adhesive.
In yet another aspect of the present invention, a solar cell backsheet is provided. According to an embodiment of the present invention, referring to fig. 2, the solar cell back sheet 100 includes: a bonding layer 110; a first adhesive layer 120, the first adhesive layer 120 being disposed on a surface of the adhesive layer 110; a support layer 130, wherein the support layer 130 is disposed on a surface of the first adhesive layer 120 away from the adhesive layer 110; a second adhesive layer 140, wherein the second adhesive layer 140 is disposed on a surface of the supporting layer 130 away from the first adhesive layer 120; and a weather-resistant layer 150, the weather-resistant layer 150 being disposed on a surface of the second adhesive layer 140 away from the support layer 130, wherein at least one of the first adhesive layer 120 and the second adhesive layer 140 is formed by the adhesive described above. The inventor finds that the solar cell back sheet 100 is not easy to delaminate between layers, and has good durability, beautiful appearance, high transparency and good commercial prospect.
According to an embodiment of the present invention, the material of the adhesive layer 110 may be a homopolymer or a copolymer of polyethylene and polypropylene, the thickness of the adhesive layer 110 may be the thickness of a conventional adhesive layer, the material of the support layer 130 may be a resin film of polyethylene terephthalate (PET) or polybutylene terephthalate (PBT) modified in weather resistance, and the support layer 13The thickness of 0 may be the thickness of a conventional support layer. According to an embodiment of the present invention, the material of the weathering layer 150 may be polyvinyl fluoride, polyvinylidene fluoride, a homopolymer or a copolymer of polytetrafluoroethylene, and the thickness of the weathering layer 150 may be the thickness of the conventional weathering layer 150. According to an embodiment of the present invention, the solar cell back sheet 100 satisfies at least one of the following conditions: the adhesion grade of the weather-resistant layer 150 is not lower than 0 grade, and after a double 85 test for 1000 hours, the adhesion grade is not lower than 0 grade; the peel strength of the bonding layer 110 is not less than 7.6N/cm, and after the double 85 test is carried out for 1000 hours, the peel strength is not less than 7.0N/cm; the light transmittance is not less than 88.6%, and after the double 85 test is carried out for 1000h, the light transmittance is not less than 88.3%; the haze is not more than 7.3%, and after the double 85 test is carried out for 1000h, the haze is not more than 10.8%; passing through 60 kw.h/m2The yellowness index delta b of the weather-resistant layer is not more than 1.5 after being irradiated by ultraviolet light.
In yet another aspect of the present invention, a solar cell is provided. According to an embodiment of the present invention, referring to fig. 3, the solar cell 10 includes: a solar cell sheet 200; an adhesive layer 300, wherein the adhesive layer 300 is formed on the surface of the solar cell sheet 200; and the solar cell back sheet 100 is arranged on the surface of the adhesion layer 300 far away from the solar cell sheet 200, and the adhesive layer 110 of the solar cell back sheet 100 is in contact with the adhesion layer 300. The inventor finds that the solar cell has long service life, excellent service performance and good commercial prospect.
According to the embodiment of the invention, the solar cell back sheet 100 can well protect the back surface of the solar cell sheet 200, so that the solar cell sheet 200 in the solar cell 10 is still not easily affected by water vapor, acid gas, too high or too low temperature, ultraviolet rays and other environmental factors after being used for a long time.
According to the embodiment of the present invention, as can be understood by those skilled in the art, the solar cell sheet 200 includes a conventional solar cell sheet structure, such as a cell panel, an encapsulant, a glass plate, etc., and will not be described in detail herein.
According to an embodiment of the present invention, the material of the adhesive layer 300 may be ethylene-vinyl acetate (EVA). Accordingly, in the solar cell 10, the adhesion between the solar cell back sheet 100 and the solar cell sheet 200 is stable, and the performance of the solar cell 10 is improved.
According to the embodiment of the present invention, the solar cell 10 further includes the structure, components, and the like of a conventional solar cell, which will not be described in detail herein.
The following describes embodiments of the present invention in detail.
Example 1
9.9g of cerium oxide, 0.1g of gamma-glycidoxypropyltrimethoxysilane, and 50g of ethyl acetate were stirred for 5 hours, 40g of P.D.S was added thereto, and the mixture was stirred for 1 hour to obtain an ultraviolet absorber.
100g of polyester polyol, 5.2g of isocyanate, 2.4g of the ultraviolet absorber, 2.17g of antioxidant 1010, 2.17g of polycarbodiimide and 325g of ethyl acetate are taken, fully stirred and uniformly mixed to obtain the adhesive.
Example 2
9.9g of cerium oxide, 0.1g of gamma-glycidoxypropyltrimethoxysilane, and 50g of ethyl acetate were stirred for 5 hours, 40g of P.D.S was added thereto, and the mixture was stirred for 1 hour to obtain an ultraviolet absorber.
109g of polyester polyol, 4.35g of isocyanate, 1.74g of the ultraviolet absorber, 1.3g of antioxidant 1010, 1.3g of polycarbodiimide and 319g of ethyl acetate are taken, fully stirred and uniformly mixed to obtain the adhesive.
Example 3
9.9g of cerium oxide, 0.1g of gamma-glycidoxypropyltrimethoxysilane, and 50g of ethyl acetate were stirred for 5 hours, 40g of P.D.S was added thereto, and the mixture was stirred for 1 hour to obtain an ultraviolet absorber.
122g of polyester polyol, 5.65g of isocyanate, 3.5g of the ultraviolet absorber, 0.87g of antioxidant 1010, 0.87g of polycarbodiimide and 303g of ethyl acetate are taken, fully stirred and uniformly mixed to obtain the adhesive.
Example 4
9.9g of cerium oxide, 0.1g of gamma-glycidoxypropyltrimethoxysilane, and 50g of ethyl acetate were stirred for 5 hours, 40g of P.D.S was added thereto, and the mixture was stirred for 1 hour to obtain an ultraviolet absorber.
117.4g of polyester polyol, 6.52g of isocyanate, 1.09g of the ultraviolet absorber obtained above, 2.61g of antioxidant 1010, 2.61g of polycarbodiimide and 307g of ethyl acetate were taken, and the mixture was sufficiently stirred and uniformly mixed to obtain an adhesive.
Example 5
9.9g of cerium oxide, 0.1g of gamma-glycidoxypropyltrimethoxysilane, and 50g of ethyl acetate were stirred for 5 hours, 40g of P.D.S was added thereto, and the mixture was stirred for 1 hour to obtain an ultraviolet absorber.
109g of polyester polyol, 4.8g of isocyanate, 3.9g of the ultraviolet absorber, 2.17g of antioxidant 1010, 2.17g of polycarbodiimide and 315g of ethyl acetate are taken, fully stirred and uniformly mixed to obtain the adhesive.
Example 6
9.9g of cerium oxide, 0.1g of gamma-glycidoxypropyltrimethoxysilane, and 50g of ethyl acetate were stirred for 5 hours, 40g of P.D.S was added thereto, and the mixture was stirred for 1 hour to obtain an ultraviolet absorber.
An adhesive was obtained by thoroughly and uniformly mixing 113g of polyester polyol, 5.65g of isocyanate, 3.04g of the above-obtained ultraviolet absorber, 2.17g of antioxidant 1010, 2.17g of polycarbodiimide and 311g of ethyl acetate.
Example 7
9.9g of cerium oxide, 0.1g of gamma-glycidoxypropyltrimethoxysilane, and 50g of ethyl acetate were stirred for 5 hours, 50g of P.D.S was added, and the mixture was stirred for 1 hour to obtain an ultraviolet absorber.
An adhesive was obtained by thoroughly and uniformly mixing 113g of polyester polyol, 5.65g of isocyanate, 3.04g of the above-obtained ultraviolet absorber, 2.17g of antioxidant 1010, 2.17g of polycarbodiimide and 311g of ethyl acetate.
Example 8
An ultraviolet absorber was obtained by stirring 19.8g of cerium oxide, 0.2g of gamma-glycidoxypropyltrimethoxysilane and 50g of ethyl acetate for 5 hours, adding 40g of P.D.S and stirring for 1 hour.
An adhesive was obtained by thoroughly and uniformly mixing 113g of polyester polyol, 5.65g of isocyanate, 3.04g of the above-obtained ultraviolet absorber, 2.17g of antioxidant 1010, 2.17g of polycarbodiimide and 311g of ethyl acetate.
Comparative example 1
An adhesive was obtained by thoroughly mixing 113g of polyester polyol, 5.65g of isocyanate, 1.3g of a commercially available UV-770 ultraviolet absorber, 1.5g of antioxidant 1010, 1.5g of polycarbodiimide and 311g of ethyl acetate.
Comparative example 2
100g of polyester polyol, 5.3g of isocyanate, 1.7g of a commercially available HS-944 ultraviolet absorbent, 1.1g of antioxidant 1010, 1.1g of polycarbodiimide and 300g of ethyl acetate are taken, fully stirred and uniformly mixed to obtain the adhesive.
Comparative example 3
100g of polyester polyol, 5.2g of isocyanate, 2.5g of P.D.S, 2.17g of antioxidant 1010, 2.17g of polycarbodiimide and 325g of ethyl acetate are taken, fully stirred and uniformly mixed to obtain the adhesive.
Comparative example 4
100g of polyester polyol, 5.2g of isocyanate, 2.3g of cerium dioxide, 2.17g of antioxidant 1010, 2.17g of polycarbodiimide and 325g of ethyl acetate are taken, fully stirred and uniformly mixed to obtain the adhesive.
Comparative example 5
9.9g of cerium oxide and 50g of ethyl acetate were stirred for 5 hours, 40g of P.D.S was added thereto, and the mixture was stirred for 1 hour to obtain an ultraviolet absorber.
100g of polyester polyol, 5.2g of isocyanate, 2.4g of the ultraviolet absorber, 2.17g of antioxidant 1010, 2.17g of polycarbodiimide and 325g of ethyl acetate are taken, fully stirred and uniformly mixed to obtain the adhesive.
The adhesives of examples 1 to 5 and comparative examples 1 to 5 obtained above were each coated on the side of a support layer (PET) having a thickness of 250 μm by blade coating in an amount of 7g/m2～9g/m2And attaching a weather-resistant layer. Coating the obtained adhesive on the other side of the support layer (PET) by using a doctor blade coating mode, wherein the coating weight is 7g/m2～9g/m2And adhering an adhesive layer. And curing and cutting to obtain the solar cell back plate.
The performance of the solar cell back sheet was tested, and the test results are shown in table 1.
The performance test method comprises the following steps:
(1) pretreatment: the obtained solar cell back sheet was pretreated in accordance with GB/T31034-2014, and then subjected to the tests (2) to (5).
(2) Light transmittance and haze: the test was carried out according to GB/T2410-2008.
(3) Yellow index Δ b (60 kw. h/m)2Ultraviolet light): the test was carried out according to GB/T31034-2014.
(4) Bond line peel strength: the test was performed according to GB/T2790-1995.
(5) And (3) adhesion of the weather-resistant layer: the test was carried out according to GB/T9286-1998.
(6) Double 85 test: the test was carried out according to item 6.19 of GB/T31034-2014.
TABLE 1 Performance test results of examples 1 to 6 and comparative examples 1 to 5
As can be seen from table 1, after the solar cell back sheets of embodiments 1 to 6 of the present invention are tested for 1000h through the double 85 test, the adhesion grade of the weather-resistant layer is not changed, the reduction of the peel strength of the bonding layer is not more than 0.8N/cm, the reduction of the light transmittance is not more than 0.4%, and the increase of the haze is not more than 3.6%. After the process of accumulating 60 kw.h/m2After UV irradiation of (1), examples 1 to 2The solar cell back sheet of example 6 had a yellowness index Δ b of not more than 1.5.
After the solar cell back sheets of comparative examples 1 to 5 are subjected to the double 85 test for 1000 hours, the weather-resistant layer adhesion, the bonding layer peeling strength, the light transmittance and the haze performance of the solar cell back sheets are obviously inferior to those of the solar cell back sheets before the double 85 test, and the solar cell back sheets are subjected to the accumulative total of 60 kw.h/m2The yellow index deltab is also higher after the ultraviolet light irradiation.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. An ultraviolet absorber, comprising:
a conjugate formed by a polymer with an ultraviolet absorption function and a rare earth oxide,
the polymer with the ultraviolet absorption function contains ester groups, the monomer forming the polymer comprises hindered amine compounds, the monomer contains 2, 2, 6, 6-tetramethyl piperidyl, the molecular weight of the polymer is 2000-3500,
the polymer having an ultraviolet absorbing function includes at least one of compounds of the following structural formula:
wherein R or R1Comprising C4～9Alkyl radical, C4～9Ether radical, C4～9Ester group, C4～9Ureido radical, C4～9A carbamate group; the value range of n is 12-20.
2. The ultraviolet absorber according to claim 1, wherein the rare earth oxide satisfies at least one of the following conditions:
comprises at least one of lanthanum oxide, cerium dioxide and praseodymium oxide,
the grain diameter is 50 nm-100 nm.
3. The ultraviolet absorber as claimed in claim 1, wherein the polymer having an ultraviolet absorbing function and the rare earth oxide are coupled together by a coupling agent.
4. The ultraviolet absorber of claim 3, wherein the conjugate is formed by:
reacting a coupling agent with the rare earth oxide to obtain a pre-conjugate;
reacting the polymer having an ultraviolet absorbing function with the pre-conjugate to obtain the conjugate,
wherein the mass ratio of the polymer with the ultraviolet absorption function to the pre-conjugate is 4: 0.95 to 1.2.
5. The ultraviolet absorber as set forth in claim 3 wherein said coupling agent comprises a silane coupling agent.
6. An adhesive comprising a high polymer formed from the following monomers:
the polyester polyol is used as a base material for the polyester polyol,
an isocyanate compound selected from the group consisting of,
the ultraviolet absorber as claimed in any one of claims 1 to 5.
7. The adhesive of claim 6, wherein the adhesive comprises a high polymer formed from the following monomers:
23 to 28 parts by weight of the polyester polyol,
1 to 1.5 parts by weight of the isocyanate,
0.25 to 0.9 parts by weight of the ultraviolet absorber.
8. A solar cell backsheet, comprising:
a bonding layer;
a first adhesive layer disposed on a surface of the adhesive layer;
a support layer disposed on a surface of the first adhesive layer distal from the adhesive layer;
the second adhesive layer is arranged on the surface, far away from the first adhesive layer, of the supporting layer; and
a weather-resistant layer disposed on a surface of the second adhesive layer remote from the support layer,
wherein at least one of the first adhesive layer and the second adhesive layer is formed of the adhesive of claim 6 or 7.
9. The solar cell backsheet according to claim 8, wherein the solar cell backsheet satisfies at least one of the following conditions:
the adhesion grade of the weather-resistant layer is not lower than 0 grade, and after a double 85 test for 1000 hours, the adhesion grade is not lower than 0 grade;
the peel strength of the bonding layer is not less than 7.6N/cm, and after a double 85 test is carried out for 1000 hours, the peel strength is not less than 7.0N/cm;
the light transmittance is not less than 88.6%, and after a double 85 test for 1000h, the light transmittance is not less than 88.3%;
the haze is not more than 7.3%, and after the double 85 test is carried out for 1000h, the haze is not more than 10.8%;
passing through 60 kw.h/m2The yellowness index delta b of the weather-resistant layer is not more than 1.5 after being irradiated by ultraviolet light.
10. A solar cell, comprising:
a solar cell sheet;
the adhesive layer is formed on the surface of the solar cell piece; and
the solar cell backsheet as set forth in claim 8 or 9, which is disposed on a surface of the adhesive layer remote from the solar cell sheet, the adhesive layer of the solar cell backsheet being in contact with the adhesive layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910397170.0A CN110144182B (en) | 2019-05-14 | 2019-05-14 | Ultraviolet absorber, adhesive, solar cell back sheet, and solar cell |
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| CN201910397170.0A CN110144182B (en) | 2019-05-14 | 2019-05-14 | Ultraviolet absorber, adhesive, solar cell back sheet, and solar cell |
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| CN110144182B true CN110144182B (en) | 2020-12-25 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011074251A (en) * | 2009-09-30 | 2011-04-14 | Dainippon Toryo Co Ltd | Rust prevention primer for aluminum member and aluminum member |
| CN103484060A (en) * | 2013-08-12 | 2014-01-01 | 曹坚林 | Novel inorganic ultraviolet absorbent and preparation method thereof |
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2019
- 2019-05-14 CN CN201910397170.0A patent/CN110144182B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011074251A (en) * | 2009-09-30 | 2011-04-14 | Dainippon Toryo Co Ltd | Rust prevention primer for aluminum member and aluminum member |
| CN103484060A (en) * | 2013-08-12 | 2014-01-01 | 曹坚林 | Novel inorganic ultraviolet absorbent and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| 聚合型受阻胺光稳定剂PDS的合成与应用;李杰等;《塑料助剂》;20101231(第79期);第35-38页 * |
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