CN115386272A - Coating composition, back sheet and photovoltaic module - Google Patents
Coating composition, back sheet and photovoltaic module Download PDFInfo
- Publication number
- CN115386272A CN115386272A CN202211053032.9A CN202211053032A CN115386272A CN 115386272 A CN115386272 A CN 115386272A CN 202211053032 A CN202211053032 A CN 202211053032A CN 115386272 A CN115386272 A CN 115386272A
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- Prior art keywords
- parts
- coating
- resin
- curing agent
- coating composition
- Prior art date
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- 239000008199 coating composition Substances 0.000 title claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 111
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 29
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 28
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 25
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 25
- 239000003822 epoxy resin Substances 0.000 claims abstract description 24
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 24
- 239000000945 filler Substances 0.000 claims abstract description 23
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 22
- 239000011737 fluorine Substances 0.000 claims abstract description 22
- 229920001225 polyester resin Polymers 0.000 claims abstract description 15
- 239000004645 polyester resin Substances 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000002904 solvent Substances 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 51
- 239000000049 pigment Substances 0.000 claims description 26
- 239000011256 inorganic filler Substances 0.000 claims description 25
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 25
- 239000002245 particle Substances 0.000 claims description 20
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 18
- 239000003960 organic solvent Substances 0.000 claims description 17
- 239000011247 coating layer Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 9
- 239000004408 titanium dioxide Substances 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 6
- 239000012463 white pigment Substances 0.000 claims description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 4
- 238000010248 power generation Methods 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 description 134
- 239000011248 coating agent Substances 0.000 description 133
- 239000002994 raw material Substances 0.000 description 43
- -1 aromatic isocyanate Chemical class 0.000 description 30
- 238000002156 mixing Methods 0.000 description 29
- 230000001070 adhesive effect Effects 0.000 description 21
- 239000012948 isocyanate Substances 0.000 description 21
- 150000002513 isocyanates Chemical class 0.000 description 19
- 239000002270 dispersing agent Substances 0.000 description 18
- 238000001035 drying Methods 0.000 description 17
- 239000000853 adhesive Substances 0.000 description 16
- 239000002313 adhesive film Substances 0.000 description 16
- 239000003054 catalyst Substances 0.000 description 16
- 238000004806 packaging method and process Methods 0.000 description 16
- 239000000843 powder Substances 0.000 description 15
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 13
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 11
- 125000001931 aliphatic group Chemical group 0.000 description 10
- 150000001412 amines Chemical class 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 description 10
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 9
- 239000005056 polyisocyanate Substances 0.000 description 9
- 229920001228 polyisocyanate Polymers 0.000 description 9
- 229920006337 unsaturated polyester resin Polymers 0.000 description 9
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 8
- RSOILICUEWXSLA-UHFFFAOYSA-N bis(1,2,2,6,6-pentamethylpiperidin-4-yl) decanedioate Chemical compound C1C(C)(C)N(C)C(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)N(C)C(C)(C)C1 RSOILICUEWXSLA-UHFFFAOYSA-N 0.000 description 8
- 230000004048 modification Effects 0.000 description 8
- 238000012986 modification Methods 0.000 description 8
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical class C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 7
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 7
- 239000004611 light stabiliser Substances 0.000 description 7
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 7
- DYUMLJSJISTVPV-UHFFFAOYSA-N phenyl propanoate Chemical compound CCC(=O)OC1=CC=CC=C1 DYUMLJSJISTVPV-UHFFFAOYSA-N 0.000 description 7
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 6
- 230000002745 absorbent Effects 0.000 description 6
- 239000002250 absorbent Substances 0.000 description 6
- 229920001296 polysiloxane Polymers 0.000 description 6
- 230000003678 scratch resistant effect Effects 0.000 description 6
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 6
- 230000002378 acidificating effect Effects 0.000 description 5
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 5
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000002310 reflectometry Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- YXRKNIZYMIXSAD-UHFFFAOYSA-N 1,6-diisocyanatohexane Chemical compound O=C=NCCCCCCN=C=O.O=C=NCCCCCCN=C=O.O=C=NCCCCCCN=C=O YXRKNIZYMIXSAD-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 239000003963 antioxidant agent Substances 0.000 description 4
- 230000003078 antioxidant effect Effects 0.000 description 4
- 125000003354 benzotriazolyl group Chemical class N1N=NC2=C1C=CC=C2* 0.000 description 4
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 4
- 229920000058 polyacrylate Polymers 0.000 description 4
- 239000013638 trimer Substances 0.000 description 4
- 239000008096 xylene Substances 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 3
- 241000887125 Chaptalia nutans Species 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229920005906 polyester polyol Polymers 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 229920001567 vinyl ester resin Polymers 0.000 description 3
- 238000004383 yellowing Methods 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical compound [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000010954 inorganic particle Substances 0.000 description 2
- 239000001023 inorganic pigment Substances 0.000 description 2
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical group [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- LIPRQQHINVWJCH-UHFFFAOYSA-N 1-ethoxypropan-2-yl acetate Chemical compound CCOCC(C)OC(C)=O LIPRQQHINVWJCH-UHFFFAOYSA-N 0.000 description 1
- MTEZSDOQASFMDI-UHFFFAOYSA-N 1-trimethoxysilylpropan-1-ol Chemical compound CCC(O)[Si](OC)(OC)OC MTEZSDOQASFMDI-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- 208000008768 Fluoride Poisoning Diseases 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- LJTMTGZZFIIJKY-UHFFFAOYSA-N O-dodecan-2-yl propanethioate Chemical compound C(CC)(=S)OC(C)CCCCCCCCCC LJTMTGZZFIIJKY-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 241000269913 Pseudopleuronectes americanus Species 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- QDLZHJXUBZCCAD-UHFFFAOYSA-N [Cr].[Mn] Chemical compound [Cr].[Mn] QDLZHJXUBZCCAD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 125000004423 acyloxy group Chemical group 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000000987 azo dye Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical group C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- MQWFLKHKWJMCEN-UHFFFAOYSA-N n'-[3-[dimethoxy(methyl)silyl]propyl]ethane-1,2-diamine Chemical compound CO[Si](C)(OC)CCCNCCN MQWFLKHKWJMCEN-UHFFFAOYSA-N 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- LGOPTUPXVVNJFH-UHFFFAOYSA-N pentadecanethioic s-acid Chemical compound CCCCCCCCCCCCCCC(O)=S LGOPTUPXVVNJFH-UHFFFAOYSA-N 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000012974 tin catalyst Substances 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/66—Additives characterised by particle size
- C09D7/69—Particle size larger than 1000 nm
-
- 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
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/049—Protective back sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- 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
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
-
- 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
-
- 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)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Nanotechnology (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of photovoltaic power generation, in particular to a coating composition, a back plate and a photovoltaic module, wherein the coating composition comprises main resin, the main resin comprises one or more of acrylic resin, polyester resin and epoxy resin, and the main resin does not contain fluorine; also includes: filler, curing agent, solvent and auxiliary agent. The composition can still realize the reliable service performance of the back plate on the premise of not containing fluorine-containing resin, and does not cause negative influence on the environment.
Description
Technical Field
The invention relates to the technical field of photovoltaic power generation, in particular to a coating composition, a back plate and a photovoltaic module.
Technical Field
As a part of a photovoltaic module, which is often in contact with the external environment, in order to ensure the weather resistance of the back sheet, i.e., the stability of the back sheet for long-term use, the main material of the back sheet of the existing photovoltaic module is generally a fluorine-containing resin, such as PVDF, PTFE, etc., as disclosed in the prior art-application publication No. CN 107759983B, which is a chinese patent, a patterned transparent back sheet material is disclosed, and in order to ensure the weather resistance of the back sheet, embodiments of the patent include fluorine resin (GK 570, T-1, etc.), without exception.
However, the fluorine-containing back plate has negative effects on the environment in both the preparation process and the later recovery process, particularly in the recovery stage, the industry generally adopts the treatment methods of burning, cracking and burying, and the burning treatment is adopted, so that the fluoride has high toxicity, the hydrogen fluoride gas generated by burning is colorless and has pungent smell, and is very easy to dissolve in water to corrode burned human organs, so that the back plate is fatal; if cracking, fluorine enters the soil and causes a great deal of pollution; the fluorocarbon in the conventional burying treatment method may not be degraded in 1000 years, and becomes a new white pollution. In addition, if the photovoltaic power station is accidentally fired, severe burning of the fluorine-containing back plate can cause serious fluoride poisoning accidents.
Therefore, in order to avoid the above problems, the development of the photovoltaic industry is in line with the concept of environmental protection, and it is urgently needed to develop a fluorine-free back sheet to protect the environment and to ensure the practical use requirements of the back sheet such as weather resistance.
Disclosure of Invention
In order to solve the above-mentioned problems, an object of the present invention is to provide an environment-friendly coating composition with reliable performance, a second object of the present invention is to provide a back sheet prepared from the composition, and a third object of the present invention is to provide a photovoltaic module using the back sheet.
The specific technical scheme is described below:
the coating composition comprises 20-70 parts by weight of main resin, wherein the main resin comprises one or more of acrylic resin, polyester resin and epoxy resin, and the main resin does not contain fluorine;
also includes: 0.5-30 parts of filler, 1-20 parts of curing agent, 20-60 parts of solvent and 0.1-15 parts of auxiliary agent;
the auxiliary agent comprises an ultraviolet auxiliary agent and other auxiliary agents, and the other auxiliary agents comprise at least one of a flatting agent, a dispersing agent, a catalyst and a coupling agent.
As used herein, "fluorine-free" means that the composition does not contain elemental fluorine in any form or morphology.
The inventor finds that even if no fluorine-containing resin is adopted, acrylic resin, polyester resin and epoxy resin are used as main raw materials of resin components, and the acrylic resin, the polyester resin and the epoxy resin are used independently or in a compound mode, so that the acrylic resin, the polyester resin and the epoxy resin have the advantage of excellent weather resistance, and the coating replacing fluorocarbon resin commonly used in the prior art to prepare the back plate is a feasible option.
Moreover, the back plate prepared from the resin component also has the advantages of good performance adjustability and moderate cost.
The filler comprises pigment and other inorganic fillers, the other inorganic fillers are selected from one or more of scratch-resistant powder, transparent powder, silicon powder, glass powder and flatting powder, and the inorganic fillers have excellent effects of improving the mechanical properties of the backboard, such as anti-sticking, anti-scratch, anti-press and the like.
The curing agent is one or more of aromatic isocyanate curing agent, aliphatic isocyanate curing agent and blocked isocyanate curing agent.
The dispersant is anionic dispersant and/or high molecular dispersant; the flatting agent is one or more of a polyacrylate flatting agent, a polyether modified polysiloxane flatting agent and a reaction type polysiloxane flatting agent; the catalyst is an organic tin catalyst; the coupling agent is one or more of vinyl trimethoxy silane, 3-glycidyl ether oxypropyl trimethoxy silane, N-beta-aminoethyl-gamma-aminopropyl methyl dimethoxy silane, isopropyl tri (dioctyl pyrophosphato acyloxy) titanate and bis (dioctyl pyrophosphato) ethylene titanate.
The organic solvent is one or more of ethanol, n-butanol, ethyl acetate, butyl acetate, propylene glycol methyl ether acetate, propylene glycol ethyl ether acetate, xylene and butanone.
For black and transparent coating compositions, the addition of epoxy resin as an essential component compensates for the defect of low adhesion of non-fluororesin surface energy, so that the inclusion of epoxy resin in these two coating compositions is necessary to optimize the adhesion performance of the back sheet coating, and at the same time, in order to ensure that the incorporation of epoxy resin does not deteriorate the uv resistance and weather resistance of the back sheet coating, the molecular chain of the epoxy resin does not include benzene ring structures, where the benzene ring structure refers to a structure in which any number of hydrogens in the benzene ring are substituted.
The black coating composition comprises the following components in parts by weight: 20-50 parts of one or two of acrylic resin and polyester resin or a composition of the acrylic resin and the polyester resin, and 0.5-10 parts of epoxy resin;
also includes: 0.5-5 parts of black pigment, 0.05-1 part of inorganic filler, 1-15 parts of curing agent, 1-5 parts of ultraviolet assistant, 0.1-5 parts of other assistant and 20-50 parts of organic solvent.
Among them, the black pigment may be a black organic pigment such as direct light-fast dye, direct diazo dye, direct cross-linking dye, azo dye containing complex metal, or an inorganic black pigment such as copper chromium black, manganese chromium black, etc., or a black color formed by mixing different color pigments such as red + yellow + blue, green + violet, etc., and the organic black pigment is generally preferred because the conventional black inorganic filler such as carbon black has insufficient blackness, insufficient hiding power and may affect the insulation of the back sheet, and the compatibility of the black inorganic pigment with the composition is poor.
The black coating composition also comprises an antioxidant, wherein the antioxidant is one or more of pentaerythritol tetrakis (3, 5-di-tert-butyl-4-hydroxy) phenylpropionate, n-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxy phenyl) propionate, 2, 6-di-tert-butyl-4-methylphenol, 4' -diisopropylphenyl diphenylamine and pentaerythritol beta-dodecyl thiopropionate.
And the transparent coating composition comprises the following components in parts by weight: 25-55 parts of one or two of acrylic resin and polyester resin composition and 2-15 parts of epoxy resin;
also includes: 0.5-5 parts of inorganic filler, 5-20 parts of curing agent, 2.95-14.5 parts of ultraviolet assistant, 0.05-0.5 part of other assistant and 30-60 parts of organic solvent.
Preferably, the ultraviolet assistant comprises an ultraviolet absorber and a hindered amine light stabilizer; the ultraviolet absorbent is benzophenone and/or benzotriazole.
In clear coating compositions, the particles of inorganic uv additives tend to have a certain particle size, refractive index, color and hardness, and the addition of such particles to the backing coating can affect the color of the coating and, in the case of clear coatings, the refractive index of the inorganic particles and the refractive index of the coating do not match, can also affect the light transmission. In addition, for the back plate coating, the more the inorganic particles in the coating, the better the coating, the inorganic filler is added to the back plate, and the addition of the inorganic ultraviolet auxiliary agent can lead a large amount of particles to be aggregated, so that the specific surface area of the coating for scattering is reduced, the scattering efficiency is reduced, and the reflectivity is reduced. In addition, the crystal form, color, hiding power, etc. of the particles also affect the reflectivity. Therefore, compared with inorganic ultraviolet auxiliaries, the preferable ultraviolet auxiliaries are organic ultraviolet auxiliaries, and the organic ultraviolet auxiliaries have no negative effect on the reflectivity of the back plate and cannot influence the power generation efficiency.
The transparent coating composition also comprises an antioxidant which is one or more of pentaerythritol tetrakis (3, 5-di-tert-butyl-4-hydroxy) phenylpropionate, n-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, 2, 6-di-tert-butyl-4-methylphenol, 4' -diisopropylphenyl diphenylamine and pentaerythritol beta-dodecylthiopropionate.
In the transparent coating composition, the inorganic filler comprises a small-particle-size filler with the particle size of 2-4 microns and a large-particle-size filler with the particle size of 5-8 microns, the mass ratio of the small-particle-size filler to the large-particle-size filler is 1 to 5, the two inorganic fillers in the particle size ranges are matched with each other for use, so that the agglomeration problem caused by the single use of the small-particle-size filler and the non-compact problem of a coating caused by the single use of large particles can be reduced, and the coating is more compact due to the matching use of the two fillers in the particle size ranges according to the proportion range. In addition, the selected filler is transparent powder with high chemical inertness and hardness, so that the hardness of the back plate is enhanced, the wear resistance, the scratch resistance and the imprint resistance of the back plate are improved, and the light transmittance is not influenced.
For a white coating composition, the coating composition comprises the following components in parts by weight: 30-70 parts of one or two of acrylic resin, polyester resin and epoxy resin;
also includes: 10-30 parts of white pigment, 0-5 parts of inorganic filler, 5-15 parts of curing agent, 0.1-2 parts of other auxiliary agent and 30-60 parts of organic solvent.
Epoxy resin can not be added into the resin component of the white coating composition to increase the adhesion, because the addition of a relatively large amount of white filler/pigment in the white coating composition can improve the adhesion of the coating and meet the use requirement of the backboard; meanwhile, the white back plate can be added with no ultraviolet auxiliary agent, because the white pigment/filler has better weather resistance and ultraviolet absorption capability, especially the titanium dioxide which can improve the heat resistance, light resistance and weather resistance of the plastic product so as to prevent the plastic product from being degraded by ultraviolet light, the titanium dioxide also has the function of an ultraviolet absorbent and can convert the energy of an ultraviolet spectrum into heat energy, the weather resistance brought by the white pigment meets the requirement, and the ultraviolet auxiliary agent does not need to be additionally added; similarly, the other additives of the white back sheet may not contain an antioxidant.
Preferably, the white pigment in the white back plate naturally contains titanium dioxide.
The back plate comprises a substrate layer and a coating layer formed on one side or two sides of the substrate layer by the coating composition in any technical scheme.
Preferably, the thickness of the substrate layer is 100-300 μm, and the thickness of the coating layer is 0.5-30 μm; when the coating layers are arranged on the two sides of the base material layer, the thickness of the coating layers on the two sides is different, one side of the coating layer is 3-18 mu m, and the other side of the coating layer is 10-22 mu m.
Specifically, the method comprises the following steps:
for the black coating composition, the black coating composition is generally applied to one side, facing a battery piece, in the back plate, the coating is coated on one side or two sides of a white or semi-white PET layer, and the white or semi-white PET layer is cured in a drying tunnel at 100-200 ℃ for 0.5-5min to obtain a high black-reflecting coating layer which forms a photovoltaic back plate together with the PET layer; the thickness of the white or semi-white PET layer is 100-300 μm, and the thickness of the high black reflecting coating is 0.5-30 μm. Further preferably, the thickness of the high black reflecting coating is 3-20 μm.
For the transparent coating composition, the transparent coating composition is coated on one side or two sides of a transparent PET layer and is cured for 0.5-5min in a drying tunnel at 100-200 ℃ to obtain a transparent coating; the thickness of the transparent PET layer is 100-300 μm, and the thickness of the transparent coating is 0.5-30 μm. Furthermore, the thickness of the transparent coating is 8-22 μm, if the inner layer and the outer layer are distinguished, the thickness of the transparent coating on the binding surface of the packaging adhesive film is 4-18 μm, the thickness of the transparent coating on the air side is 12-22 μm, and the thickness of the inner layer is smaller than or equal to that of the outer layer.
For the white coating composition, the white coating composition is coated on two sides of a PET layer and is cured for 0.5-5min in a drying tunnel at 100-200 ℃ to obtain a fluorine-free coating which forms a photovoltaic back plate together with the PET layer; the thickness of the PET layer is 100-300 μm, and the thickness of the fluorine-free coating layer is 0.5-30 μm. Further preferably, the thickness of the coating is 3-22 μm, the thickness of the coating of the adhesive surface of the packaging adhesive film is 3-10 μm, the thickness of the white coating on the air side is 10-22 μm, and the thickness of the inner layer is smaller than that of the outer layer.
The photovoltaic module adopts the back plate of any one technical scheme. In the back plate of the photovoltaic module, the two sides of the back plate are coated with the coating, the weather resistance and the cost are comprehensively considered, the thicker side of the coating is arranged on the air side, and the thinner side of the coating is arranged on the side, facing the battery piece, of the back plate.
In summary, the technical scheme of the invention has the following main beneficial effects:
the composition can still realize the reliable service performance of the back plate on the premise of not containing fluorine-containing resin, and does not cause negative influence on the environment.
Further or more specific advantages will be described in the detailed description in connection with the specific embodiments.
Detailed Description
The invention is further illustrated by the following examples:
the core technical problem faced by the technical scheme of the embodiment of the application comes from pollution to the environment in the preparation and later-stage recovery processes of the fluorine-containing back plate in the photovoltaic module, and the back plate cannot meet the use requirement without using fluorine-containing resin.
Therefore, the present inventors have made an urgent need to solve the problem of how to develop a fluorine-free backsheet that protects the environment and also guarantees the weather resistance of the backsheet.
Specific examples are detailed below:
example 1: the embodiment provides a photovoltaic fluorine-free back plate coating, a main agent of which is white, and the fluorine-free white coating is prepared from the following raw materials in parts by weight:
50 parts of hydroxy acrylic resin; 10 parts of epoxy modified polyester polyol resin; 3 parts of acrylate adhesion promoting resin; 17 parts of titanium dioxide, 0.5 part of flatting agent, 0.3 part of BYK carboxylic acid type dispersant, 0.3 part of stannous catalyst, 0.04 part of polyacrylate flatting agent and 32 parts of propylene glycol methyl ether acetate; the isocyanate curing agent is selected from 100.5 parts of Asahi converted TPA and 3 parts of D120N which is a curing agent of a trilinellic aliphatic polyisocyanate adduct. The coating is prepared by uniformly mixing the raw materials (except the isocyanate curing agent) and sanding, and then uniformly mixing the raw materials with the curing agent. Coating the uniformly mixed coating on two sides of a 275-micron-thick PET layer, curing for 3min in a drying tunnel at 175 ℃ to obtain a fluorine-free coating, and forming a photovoltaic back plate together with the PET layer; the thickness of the coating on the adhesive surface of the packaging adhesive film is 6 mu m, and the thickness of the white coating on the air side is 15 mu m.
Example 2: the embodiment provides a photovoltaic fluorine-free back panel coating, which is white in main agent and comprises the following raw materials in parts by weight:
50 parts of hydroxy acrylic resin; 10 parts of epoxy modified polyester polyol resin; 3 parts of aliphatic polyhydric alcohol glycidyl ether type epoxy resin; 3 parts of acrylate adhesion promoting resin; 17 parts of titanium dioxide, 0.5 part of a delustering agent, 0.3 part of a BYK carboxylic acid type dispersing agent, 0.3 part of a stannous catalyst, 0.04 part of a polyacrylate flatting agent and 32 parts of propylene glycol methyl ether acetate; the isocyanate curing agent is selected from 100 parts of Asahi chemical TPA and 3.8 parts of Mitsui aliphatic polyisocyanate adduct curing agent D120N. The coating is prepared by uniformly mixing and sanding the raw materials (except the isocyanate curing agent) and then uniformly mixing the raw materials with the curing agent. Coating the uniformly mixed coating on two sides of a 275-micron-thick PET layer, curing for 3min in a drying tunnel at 175 ℃ to obtain a fluorine-free coating, and forming a photovoltaic back plate together with the PET layer; the thickness of the coating on the adhesive surface of the packaging adhesive film is 6 mu m, and the thickness of the white coating on the air side is 15 mu m.
Example 3: the embodiment provides a photovoltaic fluorine-free back panel coating, which is white in main agent and comprises the following raw materials in parts by weight:
50 parts of hydroxy acrylic resin; 10 parts of epoxy modified polyester polyol resin; 3 parts of acrylate adhesion promoting resin; 22 parts of zinc oxide, 1.8 parts of a delustering agent, 0.5 part of BYK carboxylic acid type dispersant, 0.47 part of stannous catalyst, 0.3 part of polyacrylate flatting agent and 35 parts of propylene glycol methyl ether acetate; the isocyanate curing agent is selected from 100.5 parts of Asahi converted TPA and 120N 4 parts of curing agent of trilinelline aliphatic polyisocyanate addition product. The coating is prepared by uniformly mixing the raw materials (except the isocyanate curing agent) and sanding, and then uniformly mixing the raw materials with the curing agent. Coating the uniformly mixed coating on two sides of a 275-micron-thick PET layer, curing for 3min in a drying tunnel at 175 ℃ to obtain a fluorine-free coating, and forming a photovoltaic back plate together with the PET layer; the thickness of the coating on the adhesive surface of the packaging adhesive film is 6 microns, and the thickness of the white coating on the air side is 15 microns.
Example 4: the embodiment provides a photovoltaic fluorine-free back panel coating, a main agent of which is in a transparent state, and the fluorine-free transparent coating is prepared from the following raw materials in parts by weight:
30 parts of hydroxy acrylic resin; 15 parts of unsaturated polyester resin; 7.5 parts of hydrogenated bisphenol A epoxy resin; inorganic filler: 0.5 part of scratch resistant powder with the grain diameter of 2.8 mu m and 1.5 parts of transparent powder with the grain diameter of 6.8 mu m; curing agent: 6 parts of hexamethylene diisocyanate trimer curing agent and 6 parts of HDI trimer curing agent; ultraviolet auxiliary agent: 3 parts of 2-hydroxy-4-n-octyloxy benzophenone serving as an ultraviolet absorber, 1.5 parts of hindered amine light stabilizer bis (1, 2, 2,6, 6-pentamethyl-4-piperidyl) -sebacate/mono (1, 2, 2,6, 6-pentamethyl-4-piperidyl) sebacate compound and 0.8 part of pentaerythritol tetrakis (3, 5-di-tert-butyl-4-hydroxy) phenylpropionate; other auxiliary agents: 0.08 part of reactive polysiloxane flatting agent, 0.32 part of BYK carboxylic acid type dispersant and 0.06 part of stannous catalyst; organic solvent: 3.2 parts of xylene and 35 parts of propylene glycol methyl ether acetate. The coating is prepared by dispersing and uniformly mixing the raw materials (except the isocyanate curing agent) and then uniformly mixing the raw materials with the curing agent. Coating the uniformly mixed coating on two surfaces of a thoroughly-wetted PET layer with the thickness of 275 mu m, curing in a drying tunnel at 175 ℃ for 3min to obtain a fluorine-free coating, and forming a photovoltaic back plate together with the PET layer; the thickness of the coating on the adhesive surface of the packaging adhesive film is 10 mu m, and the thickness of the transparent coating on the air side is 15 mu m.
Example 5: the embodiment provides a photovoltaic fluorine-free back plate coating, a main agent of which is in a transparent state, and the fluorine-free transparent coating is prepared from the following raw materials in parts by weight:
30 parts of hydroxy acrylic resin; 15 parts of unsaturated polyester resin; inorganic filler: 2 parts of scratch resistant powder with the particle size of 2.5 mu m and 1 part of matting powder with the particle size of 6.5 mu m; curing agent: 4.3 parts of hexamethylene diisocyanate tripolymer curing agent and 4.3 parts of HDI tripolymer curing agent; ultraviolet auxiliary agent: 3 parts of 2-hydroxy-4-n-octyloxy benzophenone serving as an ultraviolet absorber, 1.5 parts of hindered amine light stabilizer bis (1, 2, 2,6, 6-pentamethyl-4-piperidyl) -sebacate/mono (1, 2, 2,6, 6-pentamethyl-4-piperidyl) sebacate compound and 0.8 part of pentaerythritol tetrakis (3, 5-di-tert-butyl-4-hydroxy) phenylpropionate; other auxiliary agents: 0.06 part of reactive polysiloxane flatting agent, 0.27 part of BYK carboxylic acid type dispersant and 0.08 part of stannous catalyst; organic solvent: 3.2 parts of xylene and 35 parts of propylene glycol methyl ether acetate. The coating is prepared by dispersing and uniformly mixing the raw materials (except the isocyanate curing agent) and then uniformly mixing the raw materials with the curing agent. Coating the uniformly mixed coating on two surfaces of a thoroughly-wetted PET layer with the thickness of 275 mu m, curing for 3min in a drying tunnel at 175 ℃ to obtain a fluorine-free coating, and forming a photovoltaic back plate together with the PET layer; the thickness of the coating on the adhesive surface of the packaging adhesive film is 10 mu m, and the thickness of the transparent coating on the air side is 15 mu m.
Example 6: the embodiment provides a photovoltaic fluorine-free back plate coating, a main agent of which is in a transparent state, and the fluorine-free transparent coating is prepared from the following raw materials in parts by weight:
40 parts of hydroxy acrylic resin; 27 parts of unsaturated polyester resin; 4.8 parts of hydrogenated bisphenol A epoxy resin; inorganic filler: 2 parts of scratch-resistant powder with the particle size of 2.5 mu m and 3 parts of transparent powder with the particle size of 6.5 mu m; curing agent: 7 parts of hexamethylene diisocyanate trimer curing agent and 7 parts of HDI trimer curing agent; ultraviolet assistant: 4 parts of 2-hydroxy-4-n-octyloxy benzophenone serving as an ultraviolet absorber, 2 parts of a hindered amine light stabilizer, namely preferably bis (1, 2, 2,6, 6-pentamethyl-4-piperidyl) -sebacate/mono (1, 2, 2,6, 6-pentamethyl-4-piperidyl) sebacate compound, and 2 parts of pentaerythritol tetrakis (3, 5-di-tert-butyl-4-hydroxy) phenylpropionate; other auxiliary agents: 0.1 part of reactive polysiloxane flatting agent, 0.38 part of BYK carboxylic acid type dispersant and 0.06 part of stannous catalyst; organic solvent: 12 parts of dimethylbenzene and 30 parts of propylene glycol methyl ether acetate. The coating is prepared by dispersing and uniformly mixing the raw materials (except the isocyanate curing agent) and then uniformly mixing the raw materials with the curing agent. Coating the uniformly mixed coating on two surfaces of a thoroughly-wetted PET layer with the thickness of 275 mu m, curing for 3min in a drying tunnel at 175 ℃ to obtain a fluorine-free coating, and forming a photovoltaic back plate together with the PET layer; the thickness of the coating on the adhesive surface of the packaging adhesive film is 10 mu m, and the thickness of the transparent coating on the air side is 15 mu m.
Example 7: the embodiment provides a photovoltaic fluorine-free back plate coating, a main agent of which is in a transparent state, and the fluorine-free transparent coating is prepared from the following raw materials in parts by weight:
20 parts of hydroxy acrylic resin; 10 parts of unsaturated polyester resin; 5 parts of hydrogenated bisphenol A epoxy resin; inorganic filler: 0.5 part of scratch resistant powder with the particle size of 2.8 mu m and 3 parts of transparent powder with the particle size of 6.8 mu m; curing agent: 5.3 parts of hexamethylene diisocyanate trimer curing agent and 5.3 parts of HDI trimer curing agent; ultraviolet auxiliary agent: 3 parts of 2-hydroxy-4-n-octyloxy benzophenone serving as an ultraviolet absorber, 1.5 parts of a hindered amine light stabilizer-preferably bis (1, 2, 2,6, 6-pentamethyl-4-piperidyl) -sebacate/mono (1, 2, 2,6, 6-pentamethyl-4-piperidyl) sebacate compound and 0.8 part of pentaerythritol tetrakis (3, 5-di-tert-butyl-4-hydroxy) phenylpropionate; other auxiliary agents: 0.08 part of reactive polysiloxane flatting agent, 0.32 part of BYK carboxylic acid type dispersant and 0.06 part of stannous catalyst; organic solvent: 3.2 parts of dimethylbenzene and 35 parts of propylene glycol methyl ether acetate. The coating is prepared by dispersing and uniformly mixing the raw materials (except the isocyanate curing agent) and then uniformly mixing the raw materials with the curing agent. Coating the uniformly mixed coating on two surfaces of a thoroughly-wetted PET layer with the thickness of 275 mu m, curing for 3min in a drying tunnel at 175 ℃ to obtain a fluorine-free coating, and forming a photovoltaic back plate together with the PET layer; the thickness of the coating on the adhesive surface of the packaging adhesive film is 10 mu m, and the thickness of the transparent coating on the air side is 15 mu m.
Example 8: the embodiment provides a photovoltaic fluorine-free high-reflection black backboard coating, which is black in main agent and comprises the following raw materials in parts by weight:
30 parts of hydroxy acrylic resin; 7.5 parts of unsaturated polyester resin; 5.6 parts of hydrogenated bisphenol A epoxy resin; 0.8 part of inorganic filler delustering agent; curing agent: 100.8 parts of Asahi chemical synthesis TPA and 6.7 parts of Mitsui aliphatic polyisocyanate adduct curing agent D120N; black pigment: 60.43 parts of pigment blue, 138.07 parts of pigment yellow and 177 parts of pigment red; ultraviolet auxiliary agent: 1.2 parts of ultraviolet absorbent 2- (2 ' -hydroxy-3 ',5 ' -di-tert-phenyl) -5-chlorinated benzotriazole, 0.6 part of hindered amine light stabilizer bis (1, 2, 2,6, 6-pentamethyl-4-piperidyl) -sebacate/mono (1, 2, 2,6, 6-pentamethyl-4-piperidyl) sebacate compound and 2 parts of tetra (3, 5-di-tert-butyl-4-hydroxy) phenylpropionic acid pentaerythritol ester; other auxiliary agents: 3 parts of block copolymer dispersant containing acidic pigment-philic filler groups and 0.08 part of stannous catalyst; 42 parts of organic solvent propylene glycol methyl ether acetate. The coating is prepared by uniformly mixing the raw materials (except the isocyanate curing agent) and sanding, and then uniformly mixing the raw materials with the curing agent. Coating the uniformly mixed coating on two surfaces of a thoroughly-wetted PET layer with the thickness of 275 mu m, curing for 3min in a drying tunnel at 175 ℃ to obtain a fluorine-free coating, and forming a photovoltaic back plate together with the PET layer; the thickness of the coating on the adhesive surface of the packaging adhesive film is 8 mu m.
Example 9: the embodiment provides a photovoltaic fluorine-free high-reflection black backboard coating, which is black in main agent and comprises the following raw materials in parts by weight:
30 parts of hydroxy acrylic resin; 7.5 parts of unsaturated polyester resin; 0.8 part of inorganic filler delustering agent; curing agent: 100.5 parts of Asahi chemical synthesis TPA and 6.3 parts of Mitsui aliphatic polyisocyanate adduct curing agent D120N; black pigment: 60.51 parts of pigment blue, 138.18 parts of pigment yellow and 177.04 parts of pigment red; ultraviolet auxiliary agent: 1.2 parts of ultraviolet absorbent 2- (2 ' -hydroxy-3 ',5 ' -di-tert-phenyl) -5-chlorinated benzotriazole, 0.6 part of hindered amine light stabilizer bis (1, 2, 2,6, 6-pentamethyl-4-piperidyl) -sebacate/mono (1, 2, 2,6, 6-pentamethyl-4-piperidyl) sebacate compound and 2 parts of tetra (3, 5-di-tert-butyl-4-hydroxy) phenylpropionic acid pentaerythritol ester; other auxiliary agents: 3.4 parts of segmented copolymer dispersant containing acidic pigment-philic filler groups and 0.07 part of stannous catalyst; 42 parts of organic solvent propylene glycol methyl ether acetate. The coating is prepared by uniformly mixing the raw materials (except the isocyanate curing agent) and sanding, and then uniformly mixing the raw materials with the curing agent. Coating the uniformly mixed coating on two surfaces of a thoroughly-wetted PET layer with the thickness of 275 mu m, curing for 3min in a drying tunnel at 175 ℃ to obtain a fluorine-free coating, and forming a photovoltaic back plate together with the PET layer; the thickness of the coating on the adhesive surface of the packaging adhesive film is 8 mu m.
Example 10: the embodiment provides a photovoltaic fluorine-free high-reflection black backboard coating, which is black in main agent and comprises the following raw materials in parts by weight:
50 parts of hydroxy acrylic resin; 17 parts of unsaturated polyester resin; 8 parts of hydrogenated bisphenol A epoxy resin; 1.5 parts of an inorganic filler delustering agent; curing agent: 100.8 parts of Asahi-converted TPA and 120N 8 parts of a curing agent of a trilinelline aliphatic polyisocyanate adduct; black pigment: 60.48 parts of pigment blue, 138.14 parts of pigment yellow and 177.2 parts of pigment red; ultraviolet assistant: 2 parts of ultraviolet absorbent 2- (2 ' -hydroxy-3 ',5 ' -di-tert-phenyl) -5-chlorinated benzotriazole, 1.2 parts of hindered amine light stabilizer bis (1, 2, 2,6, 6-pentamethyl-4-piperidyl) -sebacate/mono (1, 2, 2,6, 6-pentamethyl-4-piperidyl) sebacate compound and 2 parts of tetra (3, 5-di-tert-butyl-4-hydroxy) phenylpropionic acid pentaerythritol ester; other auxiliary agents: 6 parts of a segmented copolymer dispersant containing acidic pigment-philic filler groups and 0.12 part of a stannous catalyst; 50 parts of organic solvent propylene glycol methyl ether acetate. The coating is prepared by uniformly mixing and sanding the raw materials (except the isocyanate curing agent) and then uniformly mixing the raw materials with the curing agent. Coating the uniformly mixed coating on two surfaces of a thoroughly-wetted PET layer with the thickness of 275 mu m, curing for 3min in a drying tunnel at 175 ℃ to obtain a fluorine-free coating, and forming a photovoltaic back plate together with the PET layer; the thickness of the coating on the adhesive surface of the packaging adhesive film is 8 mu m.
Example 11: the embodiment provides a photovoltaic fluorine-free high-reflection black backboard coating, which is black in main agent and comprises the following raw materials in parts by weight:
30 parts of hydroxy acrylic resin; 7.5 parts of unsaturated polyester resin; 0.8 part of inorganic filler delustering agent; curing agent: 100.5 parts of Asahi-converted TPA and 6.3 parts of curing agent D120N of a trilinelline aliphatic polyisocyanate adduct; 5 parts of copper-chromium black; ultraviolet auxiliary agent: 1.2 parts of ultraviolet absorbent 2- (2 ' -hydroxy-3 ',5 ' -di-tert-phenyl) -5-chlorinated benzotriazole, 0.6 part of hindered amine light stabilizer-preferably bis (1, 2, 2,6, 6-pentamethyl-4-piperidyl) -sebacate/mono (1, 2, 2,6, 6-pentamethyl-4-piperidyl) sebacate compound and 2 parts of tetra (3, 5-di-tert-butyl-4-hydroxy) benzenepropanoic acid pentaerythritol ester; other auxiliary agents: 3.4 parts of segmented copolymer dispersant containing acidic pigment-philic filler groups and 0.07 part of stannous catalyst; 42 parts of organic solvent propylene glycol methyl ether acetate. The coating is prepared by uniformly mixing the raw materials (except the isocyanate curing agent) and sanding, and then uniformly mixing the raw materials with the curing agent. Coating the uniformly mixed coating on two surfaces of a thoroughly-wetted PET layer with the thickness of 275 mu m, curing in a drying tunnel at 175 ℃ for 3min to obtain a fluorine-free coating, and forming a photovoltaic back plate together with the PET layer; the thickness of the coating on the adhesive surface of the packaging adhesive film is 8 mu m.
Comparative example 1: the comparative example provides a photovoltaic fluorine-containing back panel coating, the main agent of which is white, and the fluorine-containing white coating is composed of the following raw materials in parts by weight:
40 parts of fluorocarbon resin copolymerized by tetrafluoroethylene and vinyl ester; 13.3 parts of saturated polyester resin, 30 parts of titanium dioxide, 0.5 part of a delustering agent, 1.3 parts of BYK carboxylic acid type dispersing agent, 0.6 part of stannous catalyst, 0.35 part of non-silicon leveling agent and 32 parts of propylene glycol methyl ether acetate; the isocyanate curing agent is selected from a trilinear aliphatic polyisocyanate adduct curing agent D120N 2.7 parts. The coating is prepared by uniformly mixing the raw materials (except the isocyanate curing agent) and sanding, and then uniformly mixing the raw materials with the curing agent. Coating the uniformly mixed coating on two sides of a 275-micron-thick PET layer, curing in a drying tunnel at 175 ℃ for 3min to obtain a fluorine-free coating, and forming a photovoltaic back plate together with the PET layer; the thickness of the coating on the adhesive surface of the packaging adhesive film is 6 mu m, and the thickness of the white coating on the air side is 15 mu m.
Comparative example 2: the comparative example provides a photovoltaic fluorine-containing back plate coating, the main agent of which is in a transparent state, and the fluorine-containing transparent coating comprises the following raw materials in parts by weight:
20 parts of fluorocarbon resin copolymerized by tetrafluoroethylene and vinyl ester; 5 parts of hydrogenated bisphenol A epoxy resin; inorganic filler: 1 part of scratch-resistant powder with the particle size of 2.8 mu m and 1 part of transparent powder with the particle size of 6.8 mu m; curing agent: 4 parts of hexamethylene diisocyanate trimer curing agent and 4 parts of HDI trimer curing agent; ultraviolet assistant: 2 parts of 2-hydroxy-4-n-octyloxy benzophenone as an ultraviolet absorber, 1 part of a hindered amine light stabilizer-bis (1, 2, 2,6, 6-pentamethyl-4-piperidyl) -sebacate/mono (1, 2, 2,6, 6-pentamethyl-4-piperidyl) sebacate compound, and 2 parts of pentaerythritol tetrakis (3, 5-di-tert-butyl-4-hydroxy) phenylpropionate; other auxiliary agents: 0.08 part of non-silicon leveling agent, 0.35 part of BYK carboxylic acid type dispersant and 0.06 part of stannous catalyst; organic solvent: 4 parts of xylene and 35 parts of propylene glycol methyl ether acetate. The coating is prepared by dispersing and uniformly mixing the raw materials (except the isocyanate curing agent) and then uniformly mixing the raw materials with the curing agent. Coating the uniformly mixed coating on two surfaces of a thoroughly-wetted PET layer with the thickness of 275 mu m, curing for 3min in a drying tunnel at 175 ℃ to obtain a fluorine-free coating, and forming a photovoltaic back plate together with the PET layer; the thickness of the coating on the adhesive surface of the packaging adhesive film is 10 mu m, and the thickness of the transparent coating on the air side is 15 mu m.
Comparative example 3: the comparative example provides a fluorine-containing photovoltaic high-reflection black backboard coating, the main agent of which is black, and the black coating is composed of the following raw materials in parts by weight:
30 parts of fluorocarbon resin copolymerized by tetrafluoroethylene and vinyl ester; 7.5 parts of unsaturated polyester resin; 5.6 parts of hydrogenated bisphenol A epoxy resin; 0.8 part of inorganic filler delustering agent; curing agent: 100.8 parts of Asahi-converted TPA and 6.7 parts of curing agent D120N of a trilinelline aliphatic polyisocyanate adduct; black pigment: 60.43 parts of pigment blue, 138.07 parts of pigment yellow and 177 parts of pigment red; other auxiliary agents: 3 parts of block copolymer dispersant containing acidic pigment-philic filler groups and 0.08 part of stannous catalyst; 42 parts of organic solvent propylene glycol methyl ether acetate. The coating is prepared by uniformly mixing and sanding the raw materials (except the isocyanate curing agent) and then uniformly mixing the raw materials with the curing agent. Coating the uniformly mixed coating on two surfaces of a thoroughly-wetted PET layer with the thickness of 275 mu m, curing in a drying tunnel at 175 ℃ for 3min to obtain a fluorine-free coating, and forming a photovoltaic back plate together with the PET layer; the thickness of the coating on the adhesive surface of the packaging adhesive film is 8 mu m.
The performance of the back sheets prepared in the above examples/comparative examples was tested, and the test methods and results are as follows:
(1) test method
Reflectance ratio: testing according to a reflectivity tester designed according to B/T13452.3-92, GB/T9270-88, GB/T5211.17-88 and ISO3906-80 standards;
UV test: reference is made to the standard GB/T31034 insulating back sheet for crystalline silicon solar cell modules;
and the peel strength between the EVA and the film: reference is made to GB/T2790 method for testing peel strength of adhesive 180 for flexible material versus rigid material; adhesion force: reference is made to GB/T9286-1998 test for marking of paint and varnish films; and (3) hardness testing: the hardness of the paint film is tested by referring to GB/T6739-2006 Pencil method for color paint and varnish; yellowing index: refer to GB/T2409 "test method for yellow index of plastics". (2) Test results
The modification and effect data of examples 1 to 3 and comparative example 1 are shown in Table 1:
TABLE 1 modified relation between examples 1-3 and comparative example 1 and Effect data
As can be seen from table 1, whether the epoxy resin is added to the white fluorine-free back sheet has no obvious difference in the coating adhesive property; the titanium dioxide can play a role in resisting ultraviolet rays obviously, the effect of the titanium dioxide is better than that of zinc oxide pigment, and the white fluorine-free back plate has equivalent weather resistance compared with the conventional fluorine-containing back plate on the whole.
The modification and effect data of examples 4 to 7 and comparative example 2 are shown in Table 2:
TABLE 2 modified relation between examples 4 to 7 and comparative example 2 and data of effects
As can be seen from Table 2, the transparent coating with the epoxy resin has excellent adhesive property, and shows poor adhesive property and adhesion property when no epoxy resin is added or the addition amount is insufficient; the inorganic filler with a proper proportion is added, so that the excellent transmittance can be kept, the coating surface is rough when the large-particle-size filler is excessive, the compactness is reduced, and the transmittance is obviously reduced; the use of the ultraviolet assistant can ensure that the transparent fluorine-free back plate has the weather resistance and yellowing resistance equivalent to those of the fluorine-containing back plate.
The modification and effect data of examples 8 to 11 and comparative example 3 are shown in Table 3:
TABLE 3 modified relation between examples 8 to 11 and comparative example 3 and Effect data
As can be seen from Table 3, the high-blackness coating added with the epoxy resin has excellent adhesive property, and shows poor adhesive property and adhesion property when no epoxy resin is added or the addition amount is insufficient; the single inorganic pigment is used, and the problem of poor covering property and reduced reflectivity exists when the pigment concentration is reduced; the use of the ultraviolet auxiliary agent can ensure that the fluorine-free high-reflection black back plate has the weather resistance and yellowing resistance equivalent to those of a fluorine-containing back plate.
In the description herein, references to the description of the terms "embodiment," "base embodiment," "preferred embodiment," "other embodiments," "example," "specific example," or "some examples" or the like, 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 do not necessarily 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.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A coating composition characterized by:
according to the weight portion, the material comprises 20-70 portions of main body resin, wherein the main body resin comprises one or more of acrylic resin, polyester resin and epoxy resin, and the main body resin does not contain fluorine element;
also includes: 0.5-30 parts of filler, 1-20 parts of curing agent, 20-60 parts of solvent and 0.1-15 parts of auxiliary agent.
2. The coating composition of claim 1, wherein: the molecular chain of the epoxy resin does not contain a benzene ring structure.
3. The coating composition of claim 2, characterized in that: comprises the following components in parts by weight: 20-50 parts of one or two of acrylic resin and polyester resin composition and 0.5-10 parts of epoxy resin;
also includes: 0.5-5 parts of black pigment, 0.05-1 part of inorganic filler, 1-15 parts of curing agent, 1-5 parts of ultraviolet assistant, 0.1-5 parts of other assistants and 20-50 parts of organic solvent.
4. The coating composition of claim 2, characterized in that: comprises the following components in parts by weight: 25-55 parts of one or two of acrylic resin and polyester resin or a composition of the acrylic resin and the polyester resin, and 2-15 parts of epoxy resin;
also includes: 0.5-5 parts of inorganic filler, 5-20 parts of curing agent, 2.95-14.5 parts of ultraviolet assistant, 0.05-0.5 part of other assistant and 30-60 parts of organic solvent.
5. The coating composition of claim 4, characterized in that: the inorganic filler comprises a small-particle-size filler with the particle size of 2-4 mu m and a large-particle-size filler with the particle size of 5-8 mu m, and the mass ratio of the small-particle-size filler to the large-particle-size filler is 1 to 5.
6. The coating composition of claim 2, characterized in that: comprises the following components in parts by weight: 30-70 parts of one or more of acrylic resin, polyester resin and epoxy resin;
also includes: 10-30 parts of white pigment, 0-5 parts of inorganic filler, 5-15 parts of curing agent, 0.1-2 parts of other auxiliary agent and 30-60 parts of organic solvent.
7. The coating composition of claim 6, characterized in that: the white pigment contains titanium dioxide.
8. A backplate, characterized in that: comprising a substrate layer and a coating layer formed on one or both sides of the substrate layer from the coating composition of any one of claims 1 to 7.
9. The backing sheet of claim 8 wherein: the thickness of the substrate layer is 100-300 μm, and the thickness of the coating layer is 0.5-30 μm; when the coating layers are arranged on the two sides of the base material layer, the thickness of the coating layers on the two sides is different, one side of the coating layer is 3-18 mu m, and the other side of the coating layer is 10-22 mu m.
10. Photovoltaic module, its characterized in that: the back sheet of claim 8 is used.
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| CN115926548A (en) * | 2022-12-30 | 2023-04-07 | 常州回天新材料有限公司 | Coating composition for black solar cell back panel and preparation method and application thereof |
| CN115926545A (en) * | 2022-12-26 | 2023-04-07 | 苏州赛伍应用技术股份有限公司 | Weather-resistant black coating and preparation method and application thereof |
| CN116144227A (en) * | 2022-12-29 | 2023-05-23 | 苏州赛伍应用技术股份有限公司 | Non-fluorine weather-proof paint and application thereof |
| CN116875179A (en) * | 2023-08-23 | 2023-10-13 | 常州百佳年代薄膜科技股份有限公司 | Bi-component light storage backboard paint, chu Guangguang V assembly and preparation method of bi-component light storage backboard paint |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115926545A (en) * | 2022-12-26 | 2023-04-07 | 苏州赛伍应用技术股份有限公司 | Weather-resistant black coating and preparation method and application thereof |
| CN116144227A (en) * | 2022-12-29 | 2023-05-23 | 苏州赛伍应用技术股份有限公司 | Non-fluorine weather-proof paint and application thereof |
| CN115926548A (en) * | 2022-12-30 | 2023-04-07 | 常州回天新材料有限公司 | Coating composition for black solar cell back panel and preparation method and application thereof |
| CN116875179A (en) * | 2023-08-23 | 2023-10-13 | 常州百佳年代薄膜科技股份有限公司 | Bi-component light storage backboard paint, chu Guangguang V assembly and preparation method of bi-component light storage backboard paint |
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