CN103849064B - Encapsulant compositions used for solar batteries and encapsulation method of producing sheet - Google Patents
Encapsulant compositions used for solar batteries and encapsulation method of producing sheet Download PDFInfo
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- CN103849064B CN103849064B CN201310146073.7A CN201310146073A CN103849064B CN 103849064 B CN103849064 B CN 103849064B CN 201310146073 A CN201310146073 A CN 201310146073A CN 103849064 B CN103849064 B CN 103849064B
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- 239000000203 mixture Substances 0.000 title claims abstract description 23
- 239000008393 encapsulating agent Substances 0.000 title claims abstract description 20
- 238000005538 encapsulation Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 47
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 39
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 20
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 15
- 239000000654 additive Substances 0.000 claims abstract description 12
- 150000002978 peroxides Chemical class 0.000 claims abstract description 11
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims description 18
- 239000011521 glass Substances 0.000 claims description 17
- -1 silane compound Chemical class 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 14
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 claims description 13
- 229910001415 sodium ion Inorganic materials 0.000 claims description 13
- 238000004132 cross linking Methods 0.000 claims description 10
- 239000002633 crown compound Substances 0.000 claims description 9
- 150000003983 crown ethers Chemical group 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 8
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000011575 calcium Substances 0.000 claims description 7
- 229910001424 calcium ion Inorganic materials 0.000 claims description 7
- 238000003490 calendering Methods 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 125000003118 aryl group Chemical group 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910052711 selenium Inorganic materials 0.000 claims description 3
- 239000011669 selenium Substances 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910000077 silane Inorganic materials 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000004927 fusion Effects 0.000 claims 1
- 239000003381 stabilizer Substances 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 abstract description 6
- 210000004027 cell Anatomy 0.000 description 26
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000006087 Silane Coupling Agent Substances 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 4
- 239000004611 light stabiliser Substances 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 229940117958 vinyl acetate Drugs 0.000 description 4
- UJNVTDGCOKFBKM-UHFFFAOYSA-N 1,1-bis(tert-butylperoxy)hexane Chemical compound CCCCCC(OOC(C)(C)C)OOC(C)(C)C UJNVTDGCOKFBKM-UHFFFAOYSA-N 0.000 description 3
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 3
- BFMKFCLXZSUVPI-UHFFFAOYSA-N ethyl but-3-enoate Chemical compound CCOC(=O)CC=C BFMKFCLXZSUVPI-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- OBETXYAYXDNJHR-SSDOTTSWSA-M (2r)-2-ethylhexanoate Chemical compound CCCC[C@@H](CC)C([O-])=O OBETXYAYXDNJHR-SSDOTTSWSA-M 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 150000001451 organic peroxides Chemical class 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IMYCVFRTNVMHAD-UHFFFAOYSA-N 1,1-bis(2-methylbutan-2-ylperoxy)cyclohexane Chemical compound CCC(C)(C)OOC1(OOC(C)(C)CC)CCCCC1 IMYCVFRTNVMHAD-UHFFFAOYSA-N 0.000 description 1
- WMRUCXJCYZNJEI-UHFFFAOYSA-N 2,2-bis(tert-butylperoxy)butane butane Chemical compound C(C)(C)(C)OOC(C)(CC)OOC(C)(C)C.CCCC WMRUCXJCYZNJEI-UHFFFAOYSA-N 0.000 description 1
- JMWGZSWSTCGVLX-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;2-methylprop-2-enoic acid Chemical compound CC(=C)C(O)=O.CC(=C)C(O)=O.CC(=C)C(O)=O.CCC(CO)(CO)CO JMWGZSWSTCGVLX-UHFFFAOYSA-N 0.000 description 1
- NFEGKOIJMCGIKN-UHFFFAOYSA-N 3-(2-methylbutan-2-ylperoxymethyl)heptane Chemical group CCCCC(CC)COOC(C)(C)CC NFEGKOIJMCGIKN-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- YZEAIGVCBWNDCC-UHFFFAOYSA-N C(C)(C)(C)CC(=O)OO.C(C)(=O)OCCCC Chemical compound C(C)(C)(C)CC(=O)OO.C(C)(=O)OCCCC YZEAIGVCBWNDCC-UHFFFAOYSA-N 0.000 description 1
- OWIKHYCFFJSOEH-UHFFFAOYSA-N Isocyanic acid Chemical compound N=C=O OWIKHYCFFJSOEH-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-N anhydrous cyanic acid Natural products OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- SHZIWNPUGXLXDT-UHFFFAOYSA-N caproic acid ethyl ester Natural products CCCCCC(=O)OCC SHZIWNPUGXLXDT-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- DLSMLZRPNPCXGY-UHFFFAOYSA-N tert-butylperoxy 2-ethylhexyl carbonate Chemical compound CCCCC(CC)COC(=O)OOOC(C)(C)C DLSMLZRPNPCXGY-UHFFFAOYSA-N 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
Classifications
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/15—Heterocyclic compounds having oxygen in the ring
- C08K5/159—Heterocyclic compounds having oxygen in the ring having more than two oxygen atoms in the ring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
-
- 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
- C08K3/10—Metal 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/45—Heterocyclic compounds having sulfur in the ring
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/48—Selenium- or tellurium-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
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- 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
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- 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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
- C08L2203/162—Applications used for films sealable films
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- 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
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
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- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Photovoltaic Devices (AREA)
Abstract
The present invention relates to a kind of encapsulant compositions used for solar batteries and encapsulation method of producing sheet, it can suppress, since the module performance that brings of leaking electricity declines, have outstanding insulation performance, can allow solar cell stable for extended periods of time.The composition of the present invention includes ethylene vinyl acetate copolymer resin as main material, and on the basis of the weight of the resin, the peroxide of 0.1 to 5 parts by weight and the metal ion capturing agent of 0.01 to 5 parts by weight that further comprise as core additive and add.
Description
Technical field
The present invention relates to the outstanding encapsulating material used for solar batteries of insulation performance and utilize its encapsulation thin slice manufacturer
Method, more particularly to it is a kind of to used as encapsulating material ethylene-vinyl acetate copolymer addition specific structure metal from
Sub- agent for capturing, suppresses, since the module performance brought that leaks electricity declines, to have outstanding insulation performance, solar cell can be allowed long-term
Keep the encapsulant compositions used for solar batteries of stability and utilize its encapsulation method of producing sheet.
Background technology
Solar cell is free from environmental pollution as green energy resource, can overcome the exhausted crisis of the energy, and nuisanceless, nothing
Noise, can infinitely obtain, and will be widely welcomed recently be subject to people.The solar module (module) of solar cell is profit
With photoelectric effect, luminous energy is transformed into the semiconductor element of electric energy, is the core element of solar cell.Usually with glass base
Plate, encapsulation thin slice (Encapsulation sheet), solar battery cell (cell), encapsulation thin slice and backboard (back
Sheet after order) stacks, heating pressurization, crosslinking curing is carried out to encapsulation thin slice, makes various pieces bonding integral, manufacture
Solar module.
Most popular encapsulating material is ethylene-vinyl acetate copolymer when manufacturing this solar module,
The usual proportion of vinylacetate is 20 to 40wt%.Since solar cell is in outdoor long-time service, module thus be accordingly used in
As time go on, under the influence of ultraviolet, heat, moisture etc., structure changes encapsulating material, produces the problems such as changing colour,
The efficiency of module is caused to decline.This efficiency declines in order to prevent, added usually in molded package material ultra-violet absorber,
Antioxidant or heat stabilizer.Even if but add these additives, the stability of encapsulating material is not still high, efficiency decline also
It is to have important topic to be solved.
Usual solar cell, by module array, produces the largest of about system voltage of 1000V to obtain high voltage.
Since there are voltage difference between each module of solar cell, it is possible to leak electricity.Due to aging, be contained in the metal of glass from
Sub- separate out, is moved to cell surface accumulation, causes the electrical property of unit to decline.This phenomenon is commonly referred to as generating efficiency
Decline phenomenon (potential induced degradation;PID one of) the reason for, pass through after setting solar battery cell
Normal produced problem.Particularly exposed to rainwater dew when environment, it is easier to leak electricity, allow module performance degradation.
In the authentication test of present solar module, and without the accurate evaluation of decrease in power generation efficiency phenomenon.And
In order to solve the problems, such as this, industry generally believe need to develop more preferable unit, module array system and insulation performance it is more preferable
Raw material, but so far also without the appropriate solution method of proposition.
The content of the invention
The problem of invention
The invention that the present invention is to solve the above-mentioned problems and proposes, its purpose is to provide a kind of solar cell package
Material compositions, to as in the polyethylene-vinyl acetate of solar cell package materials'use, addition can in the prior art
Strength catches sodium ion (Na+), calcium ion (Ca+) metal agent for capturing, fundamentally prevent these metal ions from dissociating from glass
And the phenomenon of cell surface accumulation is moved to by encapsulating material, prevention unit loss electric energy.
It is a kind of by the package material used for solar batteries with above-mentioned excellent characteristic another object of the present invention is to provide
Feed composition come manufacture encapsulation thin slice method.
In addition to the above-mentioned purpose clearly stated, the purpose of the present invention further include can from the present invention technology, with one's own profession
The other purposes that industry basic knowledge can be derived.
In order to achieve the above object, the present inventor is based on following judgement, is selected as metal ion scavenger
The crown compound of specific structure, with this develops the solar cell that can be used steadily in the long term under the conditions of hot and humid,
Complete the present invention.Here, the compatibility of the crown ether of above-mentioned specific structure and polyethylene-vinyl acetate copolymer encapsulating material
It is outstanding, do not restricted using upper.Above-mentioned judgement includes the low iron tempered glass (tempered for solar cell
Glass) usually (the Na of the disodium containing oxidation2O) 10 to 15%, containing calcium oxide (CaO) 5 to 10%, long-time service or in hot and humid bar
Metal ion separate out under part, is possible to be moved to the surface of unit by encapsulating material;Due to the point current potential of module array
Difference, produces electric leakage between unit and frame, allow the phenomenon of above-mentioned metal ion movement to accelerate, cause the efficiency of battery to decline, because
This is necessary fundamentally to prevent metal ion from moving from glass;The metal ion can promote encapsulating material material ethyl vinyl acetate
The hydrolysis of ethene ester molecule, reduces the durability of encapsulating material, reduces the long-time stability of module, therefore strength is caught
Effect can be more preferable when encapsulating material is used together for the material of metal ion.
Embodiment
In order to achieve the above object, the present invention provides a kind of encapsulant compositions used for solar batteries, it is characterised in that:
Comprising ethylene-vinyl acetate copolymer resin as main material, and on the basis of the weight of the resin, further comprise as
Core additive and the peroxide of 0.1 to 5 parts by weight and the metal ion capturing agent of 0.01 to 5 parts by weight added.
In the present invention, the metal ion capturing agent has 15- crown-s 5,6 skeleton of 18- crown-s shown in following structural formula, and
And it is to add or merge the crown ether for having alkyl or aryl on the skeleton.
Here, A is selected from O, S, Se, NH.
In the present invention, the metal ion capturing agent is in order to effectively catch the separated sodium ion (Na from glass+) and calcium
Ion (Ca2 +), to sodium ion (Na+) by 5 compound of 15- crown-s, to calcium ion (Ca2 +) by 6 compound of 18- crown-s individually or together
Work.
In the present invention, silane compound, the purple of the crosslinking coagent and 0.01 to 3 parts by weight no more than 2 parts by weight are further included
Ultraviolet absorbers and light stabilizer.
In the present invention, the crown compound is that have 15- crown-s 5, the compound of 6 skeleton of 18- crown-s, for chelated mineral
Ion, it includes element be oxygen, nitrogen, selenium or sulphur.
The present invention provides a kind of manufacture method of solar cell package thin slice, it is characterised in that:Encapsulating material is combined
Thing is shaped to flake with calendering or t die head rolling methods, and wherein the encapsulant compositions are total to comprising ethylene-vinyl acetate
Copolymer resin is as main material, and on the basis of the weight of the resin, further comprise as core additive and add 0.1
To the peroxide of 5 parts by weight and the metal ion capturing agent of 0.01 to 5 parts by weight.
The present invention provides a kind of solar module, it is characterised in that:The module by stacking glass substrate, envelope successively
Heating is pressurizeed and is formed after dress thin slice, solar battery cell and backboard;The encapsulation thin slice is by the way that encapsulating material is combined
Thing with calendering or t die head rolling methods be shaped to flake and manufacture, wherein the encapsulant compositions include ethyl vinyl acetate
Vinyl ester copolymers resin is as main material, and on the basis of the weight of the resin, further comprise as core additive and
The peroxide of 0.1 to 5 parts by weight and the metal ion capturing agent of 0.01 to 5 parts by weight of addition.
Invention effect
The present invention encapsulant compositions used for solar batteries insulation performance it is outstanding, due to the addition of peroxide and
Crown ether, produces selective reaction with the metal ion from glass separate out, prevents metal ion to be accumulated in cell surface, suppress
The hydrolysis of encapsulating material molecule, under conditions of hot and humid environment and potential difference trigger electric leakage, also can effectively protect list
Member and encapsulating material, prevent that hydraulic performance decline occurs during solar cell long-time service, and stablize and maintain encapsulating material structure and work(
Can, problem of the prior art can be solved.
Embodiment
Here, highly preferred embodiment of the present invention is described in detail.
The encapsulant compositions used for solar batteries that the insulation performance of preferred embodiment is outstanding include passing through
Acetyl group carries out appropriate peroxide and metal ion capturing agent the crown ether chemical combination of cross-linking reaction with ethylene-vinyl acetate resin
Thing, also has crosslinking coagent, silane coupling agent, ultra-violet absorber, light stabilizer etc..
In general, the metal ion that (dissociation) comes out that dissociates from module glass used for solar batteries has sodium ion
(Na+) and calcium ion (Ca2 +).This is because when manufacturing glass used for solar batteries using 10 to 15% oxidation disodium and 5 to
The reason of 10% calcium oxide.Due to long-term place in the electric field, ultraviolet and is irradiated repeatedly or exposed to hot and humid environment
Under, the metal ion separate out in glass.Under the potential difference effect of solar cell, the metal ion of separate out passes through
Electric current continues to move to inside modules.The metal ion is deposited in cell surface, reduces the electrical property of unit by leaking electricity, and promote
Into the hydrolysis of encapsulating material molecule.Encapsulating material layer plays connection function between glass and unit.It can be said that in package material
The method for isolating metal ion in the bed of material is best.In order to be allowed a choice, ground strength catches this metal ion species, can use a variety of
Material, than if any polyamino compound, poly-organic acid compound, poly- sulfhydryl compound, polyether compound etc..These compounds have
Alkyl or aryl structure, in the form of chain or annular form exists.But polyamino compound, poly-organic acid compound, poly- sulfhydrylation
Compound can promote the hydrolysis of encapsulating material when encapsulating material is used together, and reduce stability, or as flavescence or different
The reason for taste, be not suitable for solar cell.In addition, as metal ion capturing agent, using with encapsulating material ethyl vinyl acetate
The material that the compatibility of vinyl acetate is outstanding is more preferable.Therefore, the present inventor has found cyclic crown ether by constantly studying
Compound will not have an impact to the stability of solar cell constituent material, and show outstanding with ethylene-vinyl acetate
Compatibility, there is very high metal ion to catch effect.
In order to select appropriate metal ion capturing agent, the size of metal ion is first considered, select crown ether species to be advisable.Catch
Catch sodium ion (Na+) when, it is most suitable using the compound with 5 skeleton of 15- crown-s, catch calcium ion (Ca2 +) when, using with
The compound of 6 skeleton of 18- crown-s is most suitable.Following structural formula represents the representative crown compound used in the present invention, but this
Invention not limited to this.In addition to following material can be used, moreover it is possible to using has 6 skeleton of 15- crown-s 5 or 18- crown-s, and in bone
The material of alkyl or aryl is attached with or merged on frame.
Here, A O, S, Se or NH.
In highly preferred embodiment of the present invention, the crown compound that is used as the metal ion capturing agent, with ethene-vinegar
It is 0.01 to 5 parts by weight on the basis of 100 parts by weight of vinyl acetate, preferably 0.1 to 2 parts by weight.If usage amount is less than 0.01
Parts by weight, then can not show and sufficiently catch effect, if being more than 5 parts by weight, the bonding force and economy of encapsulating material are not
It is good.
In another most preferred embodiment of the present invention, the organic peroxide for encapsulating thin slice is from 2,2-, the bis- (tert-butyl groups
Peroxidating) butane (2,2-di (t-butyl peroxy) butane), t-butylperoxyisopropyl (t-butyl-peroxy
Isopropyl), 1,1- bis- (t-amyl peroxy) hexamethylene (1,1-di- (t-amyl peroxy) cyclohexane), tertiary fourth
Base peroxidating carbonic acid 2- ethylhexyls (t-butyl peroxy-2-ethylhexyl carbonate), tertiary pentyl list peroxidating
Carbonic acid (2- ethyl hexyls) ester (t-amyl (2-ethylhexyl) mono peroxy carbonate), peroxide acetic acid butyl ester
(t-butyl peroxy acetate), peroxidating 2 ethyl hexanoic acid tert-pentyl ester (t-amyl peroxy-2-
Ethylhexanoate), 2,5- dimethyl -2,5- two (t-butyl peroxy) hexane (2,5-dimethyl-2,5-bis (t-
Butyl peroxy) hexane), the peroxidating 2 ethyl hexanoic acid tert-butyl ester (t-butyl peroxy-2-ethylhexanoate)
In one or two kinds of compounds for selecting.
On the basis of 100 parts by weight of ethylene-vinyl acetate, the usage amount of the peroxide is 0.1 to 5 parts by weight.
In another embodiment of the present invention, the crosslinking coagent for encapsulating thin slice has triallyl isocyanurate
(triallyl isocyanurate), isocyanic acid triallyl (triallyl isocyanate), trimethylolpropane-front three
Base acrylate (trimethylolpropan-tri-methacrylate) etc., dosage are to be advisable within 2 parts by weight.
It is with vinyl, acryloxy, methyl as the silane coupling agent that above-mentioned bonding additives use in the present invention
The compound of the hydrolyzable groups such as the unsaturated groups such as acryloxy, amido, epoxy group and alkoxy.As silane coupling agent,
Specifically there are vinyl triethoxyl siloxanes, vinyl trimethoxy siloxanes, γ-methacryloxypropyl triethoxy
Siloxanes etc., dosage are advisable for 0.01 to 3 parts by weight.
In another most preferred embodiment of the present invention, encapsulation thin slice can add other various additives on demand.It is addible
Various additives include light stabilizer, ultra-violet absorber, antioxidant etc..
In another embodiment of the present invention, metal ion capturing agent can make with ethylene-vinyl acetate and as crosslinking agent
The additives such as organic peroxide, crosslinking coagent, silane coupling agent, antioxidant, ultra-violet absorber and light stabilizer
After together matching, thin slice is shaped in a manner of rolling, or individually come into operation in molding sheet.
In another embodiment of the present invention, encapsulation thin slice used for solar batteries is the encapsulating material group by using the present invention
Compound, is rolled with t die heads or calendering process is processed into 200 to 1000mm thickness to manufacture.
In conclusion the encapsulant compositions used for solar batteries of the present invention, by selecting appropriate crown compound,
The metal ion to dissociate from glass is caught, can not only prevent it to be deposited in cell surface, be also prevented from the water of encapsulating material
Solution is decomposed.The thin slice that is manufactured by the encapsulant compositions and it can be maintained a long-term stability using its solar module
Property.
In the following, the embodiment of the present invention and comparative example are specifically described.But the scope of the present invention is not only restricted to these
Embodiment.
Embodiment 1
With ethylene-vinyl acetate copolymer (ethylene-vinyl acetate content 28wt%, melt flow rate (MFR) (Melt
Flow Rate) 15g/10 minutes) on the basis of 100 parts by weight, 2,5- of proportioning dimethyl -2,5-, bis- (t-butyl peroxy) hexane
(Aldrich is manufactured, Luperox101) 1.0 parts by weight, (the Japan's chemical conversion of crosslinking coagent --- three propylene triallyl isocyanurates
Company manufactures, TAIC) 0.8 parts by weight, ultra-violet absorber --- 2- hydroxyl 4- octyloxybenzophenone (sumitomo chemical company systems
Make, sumisorb130) 0.1 parts by weight and 15- crown-s 5 (Aldrich manufacture) 1 parts by weight, 6 (Aldrich of 18- crown-s
Manufacture) 1 parts by weight, by double extruders of diameter 104mm, are rolled with less than 110 DEG C of temperature, have manufactured 500 μ m-thicks
Thin slice.
Embodiment 2
With ethylene-vinyl acetate copolymer (15g/10 points of ethylene-vinyl acetate content 28wt%, melt flow rate (MFR)
Clock) on the basis of 100 parts by weight, 2,5- of proportioning dimethyl -2,5-, bis- (t-butyl peroxy) hexane (Aldrich manufactures,
Luperox101) 1.0 parts by weight, crosslinking coagent --- three propylene triallyl isocyanurates (Japan's chemical conversion company system is made,
TAIC) 0.8 parts by weight, ultra-violet absorber --- 2- hydroxyl 4- octyloxybenzophenones (sumitomo chemical company,
Sumisorb130) 0.1 parts by weight and 15- crown-s 5 (Aldrich manufacture) 1 parts by weight, pass through double extrusions of diameter 104mm
Machine, is rolled with 110 DEG C of temperature below, has manufactured the thin slice of 500 μ m-thicks.
Embodiment 3
With ethylene-vinyl acetate copolymer (15g/10 points of ethylene-vinyl acetate content 28wt%, melt flow rate (MFR)
Clock) on the basis of 100 parts by weight, 2,5- of proportioning dimethyl -2,5-, bis- (t-butyl peroxy) hexane (Aldrich manufactures,
Luperox101) 1.0 parts by weight, crosslinking coagent --- triallyl isocyanurate (Japan's chemical conversion company system is made, TAIC) 0.8 weight
Measure part, ultra-violet absorber --- 2- hydroxyl 4- octyloxybenzophenones (sumitomo chemical company, sumisorb130) 0.1 weight
Part and 18- crown-s 6 (Aldrich manufacture) 1 parts by weight, by double extruders of diameter 104mm, with the temperature below 110 DEG C
Rolled, manufactured the thin slice of 500 μ m-thicks.
Comparative example 1
In addition to without using crown compound, other proportionings are same as Example 1, manufacture ethylene-vinyl acetate envelope
After filling thin slice, solar module has been manufactured.
Experimental example 1
The encapsulation thin slice and low iron tempered glass (3.2T, AGC company) manufactured using the various embodiments described above and comparative example, the back of the body
Plate, mc-Si units, by vacuum press (expressive machine), with 150 DEG C of progress hot pressing in 20 minutes, manufacture
The module of Unit 54.
Under 65 DEG C, 85% relative humidities, to solar module glass on be stained with one layer of water, connection -1000V electricity
After pressing a period of time, detection electric output change.The results are shown in Table 1 for it.
【Table 1】
Time (h) | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 |
0 | 208 | 208 | 208 | 208 |
50 | 204 | 202 | 200 | 170 |
100 | 200 | 195 | 190 | 110 |
Experimental example 2
The solar module that will be tested in experimental example 1, places, passes through for a long time under 85 DEG C, 85% damp condition
It is divided color meter (Spectro Color meter, SE2000, Nippon Denshoku Industries Co., Ltd. (Nippon Denshoku))
Detect the discoloration of encapsulating material.The results are shown in Table 2.
【Table 2】
Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | |
DYI(2000h) | 0.2 | 0.2 | 0.4 | 15 |
It is of the invention to use crown ether by the result of above-mentioned each experimental example) the insulating properties encapsulating material of compound
The movement of the metal ion from glass can fundamentally be isolated, can not only prevent the solar cell as caused by leaky
The problem of module performance declines, moreover it is possible to allow the stability of encapsulating material to greatly improve.
Claims (7)
- A kind of 1. encapsulant compositions used for solar batteries, it is characterised in that:Include ethylene-vinyl acetate copolymer resin As main material, and on the basis of the weight of the resin, 0.1 to 5 weight that further comprises as core additive and add The peroxide of part and the metal ion capturing agent of 0.01 to 5 parts by weight, wherein the metal ion capturing agent is crown ether chemical combination Thing.
- 2. encapsulant compositions used for solar batteries according to claim 1, it is characterised in that:The metal ion capturing agent has 15- crown-s 5,6 skeleton of 18- crown-s shown in following structural formula, and is in the skeleton Upper additional or fusion has the crown ether of alkyl or aryl,Here, A is selected from O, S, Se, NH.
- 3. encapsulant compositions used for solar batteries according to claim 1 or 2, it is characterised in that:The metal ion capturing agent in order to effectively catch from glass dissociate sodium ion Na+With calcium ion Ca2 +, to sodium ion Na+By 5 compound of 15- crown-s, to calcium ion Ca2 +Worked individually or together by 6 compound of 18- crown-s.
- 4. encapsulant compositions used for solar batteries according to claim 1, it is characterised in that:Further include silane compound, ultra-violet absorber and the light of the crosslinking coagent and 0.01 to 3 parts by weight no more than 2 parts by weight Stabilizer.
- 5. encapsulant compositions used for solar batteries according to claim 1 or 2, it is characterised in that:The crown compound is that have 15- crown-s 5, the compound of 6 skeleton of 18- crown-s, for chelated metal ions, it includes Element is oxygen, nitrogen, selenium or sulphur.
- A kind of 6. manufacture method of solar cell package thin slice, it is characterised in that:By encapsulant compositions with calendering or t moulds Head rolling method is shaped to flake, and wherein the encapsulant compositions include ethylene-vinyl acetate copolymer resin conduct Main material, and on the basis of the weight of the resin, 0.1 to 5 parts by weight for further comprising as core additive and adding The metal ion capturing agent of peroxide and 0.01 to 5 parts by weight, wherein the metal ion capturing agent is crown compound.
- A kind of 7. solar module, it is characterised in that:The module after stacking glass substrate, encapsulation thin slice, solar battery cell and backboard successively by heating pressurization and formation; The encapsulation thin slice is manufactured by the way that encapsulant compositions are shaped to flake with calendering or t die head rolling methods, Wherein the encapsulant compositions include ethylene-vinyl acetate copolymer resin as main material, and with the resin On the basis of weight, the peroxide and 0.01 to 5 parts by weight of 0.1 to 5 parts by weight for further comprising as core additive and adding Metal ion capturing agent, wherein the metal ion capturing agent is crown compound.
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KR1020120138899A KR20140072934A (en) | 2012-12-03 | 2012-12-03 | Encapsulation composition for a solarcell and preparing process fo the sheet using the same |
KR10-2012-0138899 | 2012-12-03 |
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CN105542671B (en) * | 2015-12-18 | 2018-09-21 | 广州市白云化工实业有限公司 | Photovoltaic module packaging adhesive film |
JP6658871B2 (en) * | 2016-04-05 | 2020-03-04 | 東亞合成株式会社 | Ion scavenger for solar cell, sealant composition for solar cell containing the same, and solar cell module |
US10931229B2 (en) | 2018-12-13 | 2021-02-23 | Industrial Technology Research Institute | Solar cell testing system and testing method thereof |
CN110922970A (en) * | 2019-11-29 | 2020-03-27 | 南京纳鑫新材料有限公司 | PERC battery back polishing additive and technology |
CN116496703A (en) * | 2023-04-25 | 2023-07-28 | 浙江祥隆科技有限公司 | EVA photovoltaic packaging adhesive film and preparation method thereof |
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