WO2022011676A1 - Solar cell backsheet - Google Patents
Solar cell backsheet Download PDFInfo
- Publication number
- WO2022011676A1 WO2022011676A1 PCT/CN2020/102656 CN2020102656W WO2022011676A1 WO 2022011676 A1 WO2022011676 A1 WO 2022011676A1 CN 2020102656 W CN2020102656 W CN 2020102656W WO 2022011676 A1 WO2022011676 A1 WO 2022011676A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- parts
- weather
- solar cell
- layer
- resistant layer
- Prior art date
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- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims abstract description 42
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000004642 Polyimide Substances 0.000 claims abstract description 23
- 229920001721 polyimide Polymers 0.000 claims abstract description 23
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 21
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 21
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 21
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000002787 reinforcement Effects 0.000 claims abstract description 20
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000419 plant extract Substances 0.000 claims abstract description 15
- 229920001084 poly(chloroprene) Polymers 0.000 claims abstract description 15
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 14
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 14
- 239000008367 deionised water Substances 0.000 claims abstract description 14
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 14
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 13
- 239000012948 isocyanate Substances 0.000 claims abstract description 13
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 13
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 13
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 13
- RRKXGHIWLJDUIU-UHFFFAOYSA-N 5-bromo-8-chloroisoquinoline Chemical compound C1=NC=C2C(Cl)=CC=C(Br)C2=C1 RRKXGHIWLJDUIU-UHFFFAOYSA-N 0.000 claims abstract description 12
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000007822 coupling agent Substances 0.000 claims abstract description 12
- 239000003365 glass fiber Substances 0.000 claims abstract description 12
- 239000011787 zinc oxide Substances 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 71
- 239000000203 mixture Substances 0.000 claims description 39
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 14
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 claims description 13
- 239000005995 Aluminium silicate Substances 0.000 claims description 12
- 235000012211 aluminium silicate Nutrition 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 10
- 239000011265 semifinished product Substances 0.000 claims description 10
- 239000012790 adhesive layer Substances 0.000 claims description 8
- 239000004305 biphenyl Substances 0.000 claims description 8
- 235000010290 biphenyl Nutrition 0.000 claims description 8
- 235000011187 glycerol Nutrition 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 6
- 238000004108 freeze drying Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000001694 spray drying Methods 0.000 claims description 5
- 150000002148 esters Chemical class 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims 1
- 150000001412 amines Chemical class 0.000 claims 1
- 229920002647 polyamide Polymers 0.000 claims 1
- 238000005303 weighing Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 abstract 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 abstract 1
- 229910052622 kaolinite Inorganic materials 0.000 abstract 1
- 229920002635 polyurethane Polymers 0.000 abstract 1
- 239000004814 polyurethane Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- 229920002799 BoPET Polymers 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- ZGUQGPFMMTZGBQ-UHFFFAOYSA-N [Al].[Al].[Zr] Chemical compound [Al].[Al].[Zr] ZGUQGPFMMTZGBQ-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910021392 nanocarbon Inorganic materials 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/049—Protective back sheets
-
- 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
Definitions
- the invention belongs to the technical field of solar cells, and in particular relates to a solar cell backplane.
- Application No. 201510249058.4 discloses a solar cell, including a junction box, a plasma layer, a silica gel and a backplane, wherein the plasma layer is arranged between the junction box and the silica gel, and the junction box passes through the silica gel and the silica gel.
- the backplane is connected; the backplane includes a PVDF film layer, a PET film layer, an adhesive layer and a synergistic film layer for absorbing ultraviolet light of 10-400 nm, which are arranged in sequence from top to bottom, the PVDF film layer and the PET film The layers are co-extruded, and the two sides of the adhesive layer are respectively attached to the PET film layer and the synergistic film layer.
- the junction box of the solar cell of the present invention is more firmly combined with the back sheet, and has a high photoelectric conversion rate.
- the film layer of the back sheet is extruded and is not easy to be delaminated, but the weather resistance needs to be enhanced urgently.
- Application No. 201710337630.1 discloses a solar cell back sheet, the solar cell back sheet includes a weather-resistant layer, a structural reinforcement layer and a weather-resistant layer in sequence, and the structural reinforcement layer and the weather-resistant layer are bonded and fixed by an adhesive layer; the weather-resistant layer It is a fluorine material layer, and the structural reinforcement layer includes the following raw materials: aluminum foam, polyimide, nano-carbon, zinc oxide, titanium oxide, ethylene glycol, biphenyl type polyimide, carboxyl-terminated polyimide , bisphenol, ethyl acetate, magnesium sulfate, sodium chloride, nickel oxide, deionized water.
- the solar photovoltaic cell of the invention is resistant to high voltage breakdown, has a service life of up to 45 years, and is low in cost.
- the good ductility and adsorption of foamed aluminum reduces the use of adhesives, reduces costs, and has a good market prospect.
- the weather-resistant layer adopts a fluorine-containing material, and the friendliness to the environment needs to be improved, otherwise it will affect the large-scale promotion.
- the purpose of the present invention is to provide a solar cell backplane, the weather-resistant layer on the backplane is made of fluorine-free material, and under the premise of ensuring the original light conversion efficiency, the environmental protection of the product is improved. D.
- a solar cell back sheet including a weather-resistant layer, a structural reinforcement layer and a weather-resistant layer in sequence, the structural reinforcement layer and the weather-resistant layer are bonded and fixed by an adhesive layer;
- the weather-resistant layer includes the following components in parts by weight: 15-25 parts of acrylic resin, 10-20 parts of urethane acrylate, 15-28 parts of isocyanate, 1-4 parts of nano titanium dioxide, 12-30 parts of ethylene glycol, 28-35 parts of kaolin, 3-10 parts of nano silver, glass 25-35 parts of fiber, 2-8 parts of magnesium oxide, 1-3 parts of silicon nitride, 1-12 parts of ethyl acetate, 10 parts of neoprene, 5-22 parts of carboxyl-terminated polyimide, aluminum-zirconium 12-18 parts of ester coupling agent, 20-30 parts of plant extract, 32-48 parts of deionized water;
- the structural reinforcement layer is prepared by mixing zinc oxide, magnesium oxide, biphenyl type polyimide and glycerin
- the weather-resistant layer includes the following components in parts by weight: 20 parts of acrylic resin, 18 parts of urethane acrylate, 20 parts of isocyanate, 3 parts of nano-titanium dioxide, 18 parts of ethylene glycol, 30 parts of kaolin, 8 parts of nano silver, 32 parts of glass fiber, 6 parts of magnesium oxide, 2 parts of silicon nitride, 8 parts of ethyl acetate, 8 parts of neoprene, 20 parts of carboxyl-terminated polyimide, aluminum-zirconate coupling 16 parts of the medicine, 25 parts of plant extracts, 35 parts of deionized water.
- the preparation method of the weather-resistant layer includes the following steps:
- Step 1 weigh each component according to parts by weight
- Step 2 mix acrylic resin, urethane acrylate and neoprene into the reaction kettle, stir and heat up to 120-150°C, then add nano-titanium dioxide, continue stirring and spray-dry to obtain mixture A;
- Step 3 immerse the mixture A in the plant extract, after freeze-drying, ball-mill to a fine powder of 100-200 mesh, for use;
- Step 4 mix kaolin, nano-silver, glass fiber, magnesium oxide, silicon nitride, ethyl acetate and deionized water, put into the reaction kettle and blend to obtain mixture B;
- Step 5 put the fine powder and mixture B into the extruder, then add isocyanate, carboxyl-terminated polyimide, aluminum-zirconate coupling agent, and blend and extrude to obtain a semi-finished product;
- Step 6 After microwave treatment of the semi-finished product for 1-5 seconds, put it into a mold for shaping, and then demould to obtain a weather-resistant layer.
- a further improvement is that the temperature of spray drying in step 2 is 120-150°C.
- a further improvement is that the power of the microwave treatment in step 6 is 1000-1500W.
- the molar ratio of zinc oxide, magnesium oxide, biphenyl type polyimide, and glycerin in the structural reinforcement layer is 12-18:2-8:25-28:1-5.
- the weather-resistant layer of the solar photovoltaic cell of the present invention is made of fluorine-free material, and nano-titanium dioxide is loaded after the modification treatment of acrylic resin and urethane acrylate, which improves the wear resistance, acid and alkali resistance of the weather-resistant layer. , tensile resistance and other characteristics, and the sticky effect of neoprene rubber, reducing the use of adhesives, reducing production costs, and improving the economic benefits of industrialization.
- the use of plant extracts as reducing agents reduces the addition of chemicals.
- a solar cell back sheet including a weather-resistant layer, a structural reinforcement layer and a weather-resistant layer in sequence, the structural reinforcement layer and the weather-resistant layer are bonded and fixed by an adhesive layer;
- the weather-resistant layer includes the following components in parts by weight: 15 parts of acrylic resin, 10 parts of urethane acrylate, 15 parts of isocyanate, 1 part of nano titanium dioxide, 12 parts of ethylene glycol, 28 parts of kaolin, 3 parts of nano silver, 25 parts of glass fiber, 2 parts of magnesium oxide, 1 part of silicon nitride , 1 part of ethyl acetate, 10 parts of neoprene, 5 parts of carboxyl-terminated polyimide, 12 parts of aluminum-zirconate coupling agent, 20 parts of plant extracts, and 32 parts of deionized water;
- the layer is prepared by mixing zinc oxide, magnesium oxide, biphenyl type polyimide, and glycerol in a molar ratio of 12:2:25:1.
- the preparation method of the weather-resistant layer comprises the following steps:
- Step 1 weigh each component according to parts by weight
- Step 2 mix acrylic resin, urethane acrylate and neoprene into the reaction kettle, stir and heat up to 120-150°C, then add nano-titanium dioxide, continue stirring and spray-dry to obtain mixture A;
- Step 3 immerse the mixture A in the plant extract, after freeze-drying, ball-mill to 100 mesh fine powder, for use;
- Step 4 mix kaolin, nano-silver, glass fiber, magnesium oxide, silicon nitride, ethyl acetate and deionized water, put into the reaction kettle and blend to obtain mixture B;
- Step 5 put the fine powder and mixture B into the extruder, then add isocyanate, carboxyl-terminated polyimide, aluminum-zirconate coupling agent, and blend and extrude to obtain a semi-finished product;
- Step 6 After microwave treatment of the semi-finished product for 1-5 seconds, put it into a mold for shaping, and then demould to obtain a weather-resistant layer.
- the temperature of spray drying in step 2 is 120°C.
- the power of microwave treatment in step 6 is 1000W.
- a solar cell back sheet including a weather-resistant layer, a structural reinforcement layer and a weather-resistant layer in sequence, the structural reinforcement layer and the weather-resistant layer are bonded and fixed by an adhesive layer;
- the weather-resistant layer includes the following components in parts by weight: 20 parts of acrylic resin, 18 parts of urethane acrylate, 20 parts of isocyanate, 3 parts of nano titanium dioxide, 18 parts of ethylene glycol, 30 parts of kaolin, 8 parts of nano silver, 32 parts of glass fiber, 6 parts of magnesium oxide, 2 parts of silicon nitride , 8 parts of ethyl acetate, 8 parts of neoprene, 20 parts of carboxyl-terminated polyimide, 16 parts of aluminum-zirconate coupling agent, 25 parts of plant extracts, and 35 parts of deionized water;
- the layer is prepared by mixing zinc oxide, magnesium oxide, biphenyl type polyimide, and glycerol in a molar ratio of 15:6:27:4.
- the preparation method of the weather-resistant layer comprises the following steps:
- Step 1 weigh each component according to parts by weight
- Step 2 mix acrylic resin, urethane acrylate and neoprene into the reaction kettle, stir and heat up to 120-150°C, then add nano-titanium dioxide, continue stirring and spray-dry to obtain mixture A;
- Step 3 immerse the mixture A in the plant extract, after freeze-drying, ball-mill to 130 mesh fine powder, for use;
- Step 4 mix kaolin, nano-silver, glass fiber, magnesium oxide, silicon nitride, ethyl acetate and deionized water, put into a reaction kettle and blend to obtain mixture B;
- Step 5 put the fine powder and mixture B into the extruder, then add isocyanate, carboxyl-terminated polyimide, aluminum-zirconate coupling agent, and blend and extrude to obtain a semi-finished product;
- step 6 the semi-finished product is microwaved for 3 seconds, put into a mold for shaping, and then demolded to obtain a weather-resistant layer.
- the temperature of spray drying in step 2 is 1350°C.
- the power of the microwave treatment in step 6 is 1300W.
- a solar cell back sheet including a weather-resistant layer, a structural reinforcement layer and a weather-resistant layer in sequence, the structural reinforcement layer and the weather-resistant layer are bonded and fixed by an adhesive layer;
- the weather-resistant layer includes the following components in parts by weight: 25 parts of acrylic resin, 20 parts of urethane acrylate, 28 parts of isocyanate, 4 parts of nano titanium dioxide, 30 parts of ethylene glycol, 35 parts of kaolin, 10 parts of nano silver, 35 parts of glass fiber, 8 parts of magnesium oxide, 3 parts of silicon nitride , 12 parts of ethyl acetate, 10 parts of neoprene, 22 parts of carboxyl-terminated polyimide, 18 parts of aluminum-zirconate coupling agent, 30 parts of plant extracts, and 48 parts of deionized water;
- the layer is prepared by mixing zinc oxide, magnesium oxide, biphenyl type polyimide, and glycerol in a molar ratio of 18:8:28:5.
- the preparation method of the weather-resistant layer comprises the following steps:
- Step 1 weigh each component according to parts by weight
- Step 2 mix acrylic resin, urethane acrylate and neoprene into the reaction kettle, stir and heat up to 150°C, then add nano-titanium dioxide, continue stirring and spray-dry to obtain mixture A;
- Step 3 immerse the mixture A in the plant extract, after freeze-drying, ball-mill to 200 mesh fine powder, for use;
- Step 4 mix kaolin, nano-silver, glass fiber, magnesium oxide, silicon nitride, ethyl acetate and deionized water, put into the reaction kettle and blend to obtain mixture B;
- Step 5 put the fine powder and mixture B into the extruder, then add isocyanate, carboxyl-terminated polyimide, aluminum-zirconate coupling agent, and blend and extrude to obtain a semi-finished product;
- step 6 the semi-finished product is microwaved for 5 seconds, put into a mold for shaping, and then demolded to obtain a weather-resistant layer.
- the temperature of spray drying in step 2 is 150°C.
- the power of the microwave treatment in step 6 is 1500W.
- the performance test of the solar cells of Examples 1-3 and the comparative example shows that the weather resistance is greatly improved under the premise of ensuring the service life and photoelectric conversion rate.
- the peel strength is 75-89N/cm
- the yellow edge index is 1.5-1.8
- the elongation at break MD is 100-110%
- the wet heat accelerated aging test shows no foaming or delamination
- the flame retardant grades are all HB.
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
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Abstract
Disclosed is a solar cell backsheet. The solar cell backsheet comprises, in order, a weathering layer, a structural reinforcement layer, and a weathering layer, the structural reinforcement layer and a weathering layer are bonded and fixed by means of a bonding layer; the weathering layers comprise the following components according to parts by weight: acrylic resin, polyurethane acrylate, isocyanate, nano-titanium dioxide, ethylene glycol, kaolinite, nanosilver, glass fiber, magnesium oxide, silicon nitride, ethyl acetate, chloroprene rubber, a carboxyl terminus-containing polyimide, an aluminum-zirconate coupling agent, a plant extract, and deionized water; and the structural reinforcement layer is prepared from a combination of zinc oxide, magnesium oxide, a biphenyl-type polyimide, and glycerol. Compared to current technology, the weathering layers of the solar cell of the present invention are made from fluorine-free materials, and thus properties such as the wear resistance, acid and alkali resistance, and tensile resistance of the weathering layers are improved; due to an adhesive effect of chloroprene rubber, adhesive use is reduced; and the plant extract is used as a reducing agent, reducing the addition of chemicals.
Description
本发明属于太阳能电池技术领域，具体涉及一种太阳能电池背板。The invention belongs to the technical field of solar cells, and in particular relates to a solar cell backplane.
近年来，环境污染已引起全世界的关注，尤其由矿物质燃料燃烧排放的二氧化碳所引起的温室效应更是一个严重的问题。因此，人们强烈希望能够开发出无污染能源。太阳能作为新型能源，并实现能源转化的产业化。由于太阳能电池需要长期暴露在室外，所以电池芯片必须加以保护，以免影响使用寿命。In recent years, environmental pollution has attracted worldwide attention, especially the greenhouse effect caused by carbon dioxide emitted from the combustion of fossil fuels is a serious problem. Therefore, there is a strong desire to develop non-polluting energy sources. Solar energy is a new type of energy and realizes the industrialization of energy conversion. Because solar cells need to be exposed to the outdoors for a long time, the battery chips must be protected so as not to affect the service life.
申请号201510249058.4公开了太阳能电池，包括接线盒、等离子层、硅胶及背板，其中，所述等离子层设置在所述接线盒与所述硅胶之间，所述接线盒通过所述硅胶与所述背板连接；所述背板，包括自上而下依次设置的PVDF膜层、PET膜层、粘结层及用于吸收10-400nm的紫外光的增效膜层，PVDF膜层与PET膜层共挤成型，粘结层的两面分别与PET膜层与增效膜层贴合。本发明的太阳能电池的接线盒与背板结合更牢固，并且光电转化率高。所述背板的膜层通过挤成型，不易分层，但是耐候性急需要增强。Application No. 201510249058.4 discloses a solar cell, including a junction box, a plasma layer, a silica gel and a backplane, wherein the plasma layer is arranged between the junction box and the silica gel, and the junction box passes through the silica gel and the silica gel. The backplane is connected; the backplane includes a PVDF film layer, a PET film layer, an adhesive layer and a synergistic film layer for absorbing ultraviolet light of 10-400 nm, which are arranged in sequence from top to bottom, the PVDF film layer and the PET film The layers are co-extruded, and the two sides of the adhesive layer are respectively attached to the PET film layer and the synergistic film layer. The junction box of the solar cell of the present invention is more firmly combined with the back sheet, and has a high photoelectric conversion rate. The film layer of the back sheet is extruded and is not easy to be delaminated, but the weather resistance needs to be enhanced urgently.
申请号201710337630.1公开了太阳能电池背板，所述太阳能电池背板依次包括耐候层、结构增强层和耐候层，所述结构增强层和耐候层之间通过粘结层粘结固定；所述耐候层为氟材料层，所述结构增强层包括以下原料：泡沫铝，聚酰亚胺，纳米碳，氧化锌，氧化钛，乙二醇，联苯型聚酰亚胺，含羧基端聚酰亚胺，双酚，乙酸乙酯，硫酸镁，氯化钠，氧化镍，去离子水。本发明太阳能光伏电池耐高压击穿，使用寿命长达45年，且成本低廉，所用结构增强层耐候性好，耐拉伸，制备过程简单，纳米碳的加入提高了结构增强层的润滑性，泡沫铝良好的延展性和吸附性，减少了胶粘剂的使用，减少了成本，市场前景好。但是，本发明中耐候层采用含氟材料，对环境的友好度有待提高，否则影响大面积推广。Application No. 201710337630.1 discloses a solar cell back sheet, the solar cell back sheet includes a weather-resistant layer, a structural reinforcement layer and a weather-resistant layer in sequence, and the structural reinforcement layer and the weather-resistant layer are bonded and fixed by an adhesive layer; the weather-resistant layer It is a fluorine material layer, and the structural reinforcement layer includes the following raw materials: aluminum foam, polyimide, nano-carbon, zinc oxide, titanium oxide, ethylene glycol, biphenyl type polyimide, carboxyl-terminated polyimide , bisphenol, ethyl acetate, magnesium sulfate, sodium chloride, nickel oxide, deionized water. The solar photovoltaic cell of the invention is resistant to high voltage breakdown, has a service life of up to 45 years, and is low in cost. The good ductility and adsorption of foamed aluminum reduces the use of adhesives, reduces costs, and has a good market prospect. However, in the present invention, the weather-resistant layer adopts a fluorine-containing material, and the friendliness to the environment needs to be improved, otherwise it will affect the large-scale promotion.
发明内容SUMMARY OF THE INVENTION
针对现有技术的不足，本发明的目的在于提供一种太阳能电池背板，该背板上的耐候层采用无氟材料，在保证原有的光转化效率的前提下，提高了产品对环境的友好度。In view of the deficiencies of the prior art, the purpose of the present invention is to provide a solar cell backplane, the weather-resistant layer on the backplane is made of fluorine-free material, and under the premise of ensuring the original light conversion efficiency, the environmental protection of the product is improved. D.
为解决现有技术问题，本发明采取的技术方案为：In order to solve the prior art problem, the technical scheme adopted in the present invention is:
太阳能电池背板，依次包括耐候层、结构增强层和耐候层，所述结构增强层和耐候层之间通过粘结层粘结固定；所述耐候层包括以下按重量份数计的组分：丙烯酸树脂15-25份、 聚氨酯丙烯酸酯10-20份、异氰酸酯15-28份、纳米二氧化钛1-4份、乙二醇12-30份、高岭土28-35份、纳米银3-10份、玻璃纤维25-35份、氧化镁2-8份、氮化硅1-3份、乙酸乙酯1-12份、氯丁胶10份、含羧基端聚酰亚胺5-22份、铝-锆酸酯偶联剂12-18份、植物提取物20-30份、去离子水32-48份；所述结构增强层由氧化锌、氧化镁、联苯型聚酰亚胺、甘油混合制备。A solar cell back sheet, including a weather-resistant layer, a structural reinforcement layer and a weather-resistant layer in sequence, the structural reinforcement layer and the weather-resistant layer are bonded and fixed by an adhesive layer; the weather-resistant layer includes the following components in parts by weight: 15-25 parts of acrylic resin, 10-20 parts of urethane acrylate, 15-28 parts of isocyanate, 1-4 parts of nano titanium dioxide, 12-30 parts of ethylene glycol, 28-35 parts of kaolin, 3-10 parts of nano silver, glass 25-35 parts of fiber, 2-8 parts of magnesium oxide, 1-3 parts of silicon nitride, 1-12 parts of ethyl acetate, 10 parts of neoprene, 5-22 parts of carboxyl-terminated polyimide, aluminum-zirconium 12-18 parts of ester coupling agent, 20-30 parts of plant extract, 32-48 parts of deionized water; the structural reinforcement layer is prepared by mixing zinc oxide, magnesium oxide, biphenyl type polyimide and glycerin.
作为改进的是，所述耐候层包括以下按重量份数计的组分：丙烯酸树脂20份、聚氨酯丙烯酸酯18份、异氰酸酯20份、纳米二氧化钛3份、乙二醇18份、高岭土30份、纳米银8份、玻璃纤维32份、氧化镁6份、氮化硅2份、乙酸乙酯8份、氯丁胶8份、含羧基端聚酰亚胺20份、铝-锆酸酯偶联剂16份、植物提取物25份、去离子水35份。As an improvement, the weather-resistant layer includes the following components in parts by weight: 20 parts of acrylic resin, 18 parts of urethane acrylate, 20 parts of isocyanate, 3 parts of nano-titanium dioxide, 18 parts of ethylene glycol, 30 parts of kaolin, 8 parts of nano silver, 32 parts of glass fiber, 6 parts of magnesium oxide, 2 parts of silicon nitride, 8 parts of ethyl acetate, 8 parts of neoprene, 20 parts of carboxyl-terminated polyimide, aluminum-zirconate coupling 16 parts of the medicine, 25 parts of plant extracts, 35 parts of deionized water.
作为改进的是，所述耐候层的制备方法，包括以下步骤：As an improvement, the preparation method of the weather-resistant layer includes the following steps:
步骤1，按照重量份数称取各组分；Step 1, weigh each component according to parts by weight;
步骤2，将丙烯酸树脂、聚氨酯丙烯酸酯和氯丁胶混合投入反应釜中，搅拌并升温至120-150℃，再加入纳米二氧化钛，继续搅拌后喷雾干燥得混合物A；Step 2, mix acrylic resin, urethane acrylate and neoprene into the reaction kettle, stir and heat up to 120-150°C, then add nano-titanium dioxide, continue stirring and spray-dry to obtain mixture A;
步骤3，将混合物A浸入植物提取物中，冷冻干燥后，球磨至100-200目的细粉，备用；Step 3, immerse the mixture A in the plant extract, after freeze-drying, ball-mill to a fine powder of 100-200 mesh, for use;
步骤4，将高岭土、纳米银、玻璃纤维、氧化镁、氮化硅、乙酸乙酯和去离子水混合，投入反应釜中共混得混合物B；Step 4, mix kaolin, nano-silver, glass fiber, magnesium oxide, silicon nitride, ethyl acetate and deionized water, put into the reaction kettle and blend to obtain mixture B;
步骤5，将细粉和混合物B投入挤出机中，再加入异氰酸酯、含羧基端聚酰亚胺、铝-锆酸酯偶联剂，共混挤出得半成品；Step 5, put the fine powder and mixture B into the extruder, then add isocyanate, carboxyl-terminated polyimide, aluminum-zirconate coupling agent, and blend and extrude to obtain a semi-finished product;
步骤6，将半成品微波处理1-5秒钟后，投入模具中定型后，脱模，即得耐候层。Step 6: After microwave treatment of the semi-finished product for 1-5 seconds, put it into a mold for shaping, and then demould to obtain a weather-resistant layer.
进一步改进的是，步骤2中喷雾干燥的温度为120-150℃。A further improvement is that the temperature of spray drying in step 2 is 120-150°C.
进一步改进的是，步骤6中微波处理的功率为1000-1500W。A further improvement is that the power of the microwave treatment in step 6 is 1000-1500W.
作为改进的是，所述结构增强层中氧化锌、氧化镁、联苯型聚酰亚胺、甘油按照摩尔比为12-18:2-8：25-28:1-5。As an improvement, the molar ratio of zinc oxide, magnesium oxide, biphenyl type polyimide, and glycerin in the structural reinforcement layer is 12-18:2-8:25-28:1-5.
与现有技术相比，本发明太阳能光伏电池的耐候层采用无氟材料制成，通过对丙烯酸树脂和聚氨酯丙烯酸酯改性处理后，负载纳米二氧化钛，提升了耐候层的耐磨，耐酸碱，耐拉伸等特性，且氯丁橡胶的粘粘作用，减少了胶粘剂的使用，降低了生产成本，提高了产业化的经济效益。另外，使用植物提取物为还原剂，减少了化学品的添加。Compared with the prior art, the weather-resistant layer of the solar photovoltaic cell of the present invention is made of fluorine-free material, and nano-titanium dioxide is loaded after the modification treatment of acrylic resin and urethane acrylate, which improves the wear resistance, acid and alkali resistance of the weather-resistant layer. , tensile resistance and other characteristics, and the sticky effect of neoprene rubber, reducing the use of adhesives, reducing production costs, and improving the economic benefits of industrialization. In addition, the use of plant extracts as reducing agents reduces the addition of chemicals.
实施例1Example 1
太阳能电池背板，依次包括耐候层、结构增强层和耐候层，所述结构增强层和耐候层之 间通过粘结层粘结固定；所述耐候层包括以下按重量份数计的组分：丙烯酸树脂15份、聚氨酯丙烯酸酯10份、异氰酸酯15份、纳米二氧化钛1份、乙二醇12份、高岭土28份、纳米银3份、玻璃纤维25份、氧化镁2份、氮化硅1份、乙酸乙酯1份、氯丁胶10份、含羧基端聚酰亚胺5份、铝-锆酸酯偶联剂12份、植物提取物20份、去离子水32份；所述结构增强层由氧化锌、氧化镁、联苯型聚酰亚胺、甘油按照摩尔比为12:2：25:1混合制备。A solar cell back sheet, including a weather-resistant layer, a structural reinforcement layer and a weather-resistant layer in sequence, the structural reinforcement layer and the weather-resistant layer are bonded and fixed by an adhesive layer; the weather-resistant layer includes the following components in parts by weight: 15 parts of acrylic resin, 10 parts of urethane acrylate, 15 parts of isocyanate, 1 part of nano titanium dioxide, 12 parts of ethylene glycol, 28 parts of kaolin, 3 parts of nano silver, 25 parts of glass fiber, 2 parts of magnesium oxide, 1 part of silicon nitride , 1 part of ethyl acetate, 10 parts of neoprene, 5 parts of carboxyl-terminated polyimide, 12 parts of aluminum-zirconate coupling agent, 20 parts of plant extracts, and 32 parts of deionized water; The layer is prepared by mixing zinc oxide, magnesium oxide, biphenyl type polyimide, and glycerol in a molar ratio of 12:2:25:1.
所述耐候层的制备方法，包括以下步骤：The preparation method of the weather-resistant layer comprises the following steps:
步骤1，按照重量份数称取各组分；Step 1, weigh each component according to parts by weight;
步骤2，将丙烯酸树脂、聚氨酯丙烯酸酯和氯丁胶混合投入反应釜中，搅拌并升温至120-150℃，再加入纳米二氧化钛，继续搅拌后喷雾干燥得混合物A；Step 2, mix acrylic resin, urethane acrylate and neoprene into the reaction kettle, stir and heat up to 120-150°C, then add nano-titanium dioxide, continue stirring and spray-dry to obtain mixture A;
步骤3，将混合物A浸入植物提取物中，冷冻干燥后，球磨至100目的细粉，备用；Step 3, immerse the mixture A in the plant extract, after freeze-drying, ball-mill to 100 mesh fine powder, for use;
步骤4，将高岭土、纳米银、玻璃纤维、氧化镁、氮化硅、乙酸乙酯和去离子水混合，投入反应釜中共混得混合物B；Step 4, mix kaolin, nano-silver, glass fiber, magnesium oxide, silicon nitride, ethyl acetate and deionized water, put into the reaction kettle and blend to obtain mixture B;
步骤5，将细粉和混合物B投入挤出机中，再加入异氰酸酯、含羧基端聚酰亚胺、铝-锆酸酯偶联剂，共混挤出得半成品；Step 5, put the fine powder and mixture B into the extruder, then add isocyanate, carboxyl-terminated polyimide, aluminum-zirconate coupling agent, and blend and extrude to obtain a semi-finished product;
步骤6，将半成品微波处理1-5秒钟后，投入模具中定型后，脱模，即得耐候层。Step 6: After microwave treatment of the semi-finished product for 1-5 seconds, put it into a mold for shaping, and then demould to obtain a weather-resistant layer.
其中，步骤2中喷雾干燥的温度为120℃。Wherein, the temperature of spray drying in step 2 is 120°C.
步骤6中微波处理的功率为1000W。The power of microwave treatment in step 6 is 1000W.
实施例2Example 2
太阳能电池背板，依次包括耐候层、结构增强层和耐候层，所述结构增强层和耐候层之间通过粘结层粘结固定；所述耐候层包括以下按重量份数计的组分：丙烯酸树脂20份、聚氨酯丙烯酸酯18份、异氰酸酯20份、纳米二氧化钛3份、乙二醇18份、高岭土30份、纳米银8份、玻璃纤维32份、氧化镁6份、氮化硅2份、乙酸乙酯8份、氯丁胶8份、含羧基端聚酰亚胺20份、铝-锆酸酯偶联剂16份、植物提取物25份、去离子水35份；所述结构增强层由氧化锌、氧化镁、联苯型聚酰亚胺、甘油按照摩尔比为15:6：27:4混合制备。A solar cell back sheet, including a weather-resistant layer, a structural reinforcement layer and a weather-resistant layer in sequence, the structural reinforcement layer and the weather-resistant layer are bonded and fixed by an adhesive layer; the weather-resistant layer includes the following components in parts by weight: 20 parts of acrylic resin, 18 parts of urethane acrylate, 20 parts of isocyanate, 3 parts of nano titanium dioxide, 18 parts of ethylene glycol, 30 parts of kaolin, 8 parts of nano silver, 32 parts of glass fiber, 6 parts of magnesium oxide, 2 parts of silicon nitride , 8 parts of ethyl acetate, 8 parts of neoprene, 20 parts of carboxyl-terminated polyimide, 16 parts of aluminum-zirconate coupling agent, 25 parts of plant extracts, and 35 parts of deionized water; The layer is prepared by mixing zinc oxide, magnesium oxide, biphenyl type polyimide, and glycerol in a molar ratio of 15:6:27:4.
所述耐候层的制备方法，包括以下步骤：The preparation method of the weather-resistant layer comprises the following steps:
步骤1，按照重量份数称取各组分；Step 1, weigh each component according to parts by weight;
步骤2，将丙烯酸树脂、聚氨酯丙烯酸酯和氯丁胶混合投入反应釜中，搅拌并升温至120-150℃，再加入纳米二氧化钛，继续搅拌后喷雾干燥得混合物A；Step 2, mix acrylic resin, urethane acrylate and neoprene into the reaction kettle, stir and heat up to 120-150°C, then add nano-titanium dioxide, continue stirring and spray-dry to obtain mixture A;
步骤3，将混合物A浸入植物提取物中，冷冻干燥后，球磨至130目的细粉，备用；Step 3, immerse the mixture A in the plant extract, after freeze-drying, ball-mill to 130 mesh fine powder, for use;
步骤4，将高岭土、纳米银、玻璃纤维、氧化镁、氮化硅、乙酸乙酯和去离子水混合， 投入反应釜中共混得混合物B；Step 4, mix kaolin, nano-silver, glass fiber, magnesium oxide, silicon nitride, ethyl acetate and deionized water, put into a reaction kettle and blend to obtain mixture B;
步骤5，将细粉和混合物B投入挤出机中，再加入异氰酸酯、含羧基端聚酰亚胺、铝-锆酸酯偶联剂，共混挤出得半成品；Step 5, put the fine powder and mixture B into the extruder, then add isocyanate, carboxyl-terminated polyimide, aluminum-zirconate coupling agent, and blend and extrude to obtain a semi-finished product;
步骤6，将半成品微波处理3秒钟后，投入模具中定型后，脱模，即得耐候层。In step 6, the semi-finished product is microwaved for 3 seconds, put into a mold for shaping, and then demolded to obtain a weather-resistant layer.
其中，步骤2中喷雾干燥的温度为1350℃。Wherein, the temperature of spray drying in step 2 is 1350°C.
步骤6中微波处理的功率为1300W。The power of the microwave treatment in step 6 is 1300W.
实施例3Example 3
太阳能电池背板，依次包括耐候层、结构增强层和耐候层，所述结构增强层和耐候层之间通过粘结层粘结固定；所述耐候层包括以下按重量份数计的组分：丙烯酸树脂25份、聚氨酯丙烯酸酯20份、异氰酸酯28份、纳米二氧化钛4份、乙二醇30份、高岭土35份、纳米银10份、玻璃纤维35份、氧化镁8份、氮化硅3份、乙酸乙酯12份、氯丁胶10份、含羧基端聚酰亚胺22份、铝-锆酸酯偶联剂18份、植物提取物30份、去离子水48份；所述结构增强层由氧化锌、氧化镁、联苯型聚酰亚胺、甘油按照摩尔比为18:8：28:5混合制备。A solar cell back sheet, including a weather-resistant layer, a structural reinforcement layer and a weather-resistant layer in sequence, the structural reinforcement layer and the weather-resistant layer are bonded and fixed by an adhesive layer; the weather-resistant layer includes the following components in parts by weight: 25 parts of acrylic resin, 20 parts of urethane acrylate, 28 parts of isocyanate, 4 parts of nano titanium dioxide, 30 parts of ethylene glycol, 35 parts of kaolin, 10 parts of nano silver, 35 parts of glass fiber, 8 parts of magnesium oxide, 3 parts of silicon nitride , 12 parts of ethyl acetate, 10 parts of neoprene, 22 parts of carboxyl-terminated polyimide, 18 parts of aluminum-zirconate coupling agent, 30 parts of plant extracts, and 48 parts of deionized water; The layer is prepared by mixing zinc oxide, magnesium oxide, biphenyl type polyimide, and glycerol in a molar ratio of 18:8:28:5.
所述耐候层的制备方法，包括以下步骤：The preparation method of the weather-resistant layer comprises the following steps:
步骤1，按照重量份数称取各组分；Step 1, weigh each component according to parts by weight;
步骤2，将丙烯酸树脂、聚氨酯丙烯酸酯和氯丁胶混合投入反应釜中，搅拌并升温至150℃，再加入纳米二氧化钛，继续搅拌后喷雾干燥得混合物A；Step 2, mix acrylic resin, urethane acrylate and neoprene into the reaction kettle, stir and heat up to 150°C, then add nano-titanium dioxide, continue stirring and spray-dry to obtain mixture A;
步骤3，将混合物A浸入植物提取物中，冷冻干燥后，球磨至200目的细粉，备用；Step 3, immerse the mixture A in the plant extract, after freeze-drying, ball-mill to 200 mesh fine powder, for use;
步骤4，将高岭土、纳米银、玻璃纤维、氧化镁、氮化硅、乙酸乙酯和去离子水混合，投入反应釜中共混得混合物B；Step 4, mix kaolin, nano-silver, glass fiber, magnesium oxide, silicon nitride, ethyl acetate and deionized water, put into the reaction kettle and blend to obtain mixture B;
步骤5，将细粉和混合物B投入挤出机中，再加入异氰酸酯、含羧基端聚酰亚胺、铝-锆酸酯偶联剂，共混挤出得半成品；Step 5, put the fine powder and mixture B into the extruder, then add isocyanate, carboxyl-terminated polyimide, aluminum-zirconate coupling agent, and blend and extrude to obtain a semi-finished product;
步骤6，将半成品微波处理5秒钟后，投入模具中定型后，脱模，即得耐候层。In step 6, the semi-finished product is microwaved for 5 seconds, put into a mold for shaping, and then demolded to obtain a weather-resistant layer.
其中，步骤2中喷雾干燥的温度为150℃。Wherein, the temperature of spray drying in step 2 is 150°C.
步骤6中微波处理的功率为1500W。The power of the microwave treatment in step 6 is 1500W.
对比例Comparative ratio
由申请号201710337630.1的实施例1制备的电池。A battery prepared from Example 1 of Application No. 201710337630.1.
对实施例1-3的太阳能电池和对比例(申请号201710337630.1的实施例1制备的电池)性能测试，在保证使用寿命和光电转化率的前提下，耐候性得到极大提高。剥离强度为75-89N/cm，黄边指数为1.5-1.8，断裂伸长率MD为100-110％，湿热加速老化测试，不起泡， 不脱层，阻燃等级均为HB。The performance test of the solar cells of Examples 1-3 and the comparative example (the cell prepared in Example 1 of Application No. 201710337630.1) shows that the weather resistance is greatly improved under the premise of ensuring the service life and photoelectric conversion rate. The peel strength is 75-89N/cm, the yellow edge index is 1.5-1.8, the elongation at break MD is 100-110%, and the wet heat accelerated aging test shows no foaming or delamination, and the flame retardant grades are all HB.
Claims (6)
- 太阳能电池背板，其特征在于，依次包括耐候层、结构增强层和耐候层，所述结构增强层和耐候层之间通过粘结层粘结固定；所述耐候层包括以下按重量份数计的组分：丙烯酸树脂15-25份、聚氨酯丙烯酸酯10-20份、异氰酸酯15-28份、纳米二氧化钛1-4份、乙二醇12-30份、高岭土28-35份、纳米银3-10份、玻璃纤维25-35份、氧化镁2-8份、氮化硅1-3份、乙酸乙酯1-12份、氯丁胶10份、含羧基端聚酰亚胺5-22份、铝-锆酸酯偶联剂12-18份、植物提取物20-30份、去离子水32-48份；所述结构增强层由氧化锌、氧化镁、联苯型聚酰亚胺、甘油混合制备。A solar cell back sheet is characterized in that it comprises a weather-resistant layer, a structural reinforcement layer and a weather-resistant layer in sequence, and the structural reinforcement layer and the weather-resistant layer are bonded and fixed by an adhesive layer; the weather-resistant layer includes the following in parts by weight Components: 15-25 parts of acrylic resin, 10-20 parts of urethane acrylate, 15-28 parts of isocyanate, 1-4 parts of nano titanium dioxide, 12-30 parts of ethylene glycol, 28-35 parts of kaolin, 3- 10 parts, 25-35 parts glass fiber, 2-8 parts magnesium oxide, 1-3 parts silicon nitride, 1-12 parts ethyl acetate, 10 parts neoprene, 5-22 parts carboxyl-terminated polyimide , 12-18 parts of aluminum-zirconate coupling agent, 20-30 parts of plant extract, 32-48 parts of deionized water; the structural reinforcement layer is composed of zinc oxide, magnesium oxide, biphenyl polyimide, Glycerin mixed preparation.
- 根据权利要求1所述的太阳能电池背板，其特征在于，所述耐候层包括以下按重量份数计的组分：丙烯酸树脂20份、聚氨酯丙烯酸酯18份、异氰酸酯20份、纳米二氧化钛3份、乙二醇18份、高岭土30份、纳米银8份、玻璃纤维32份、氧化镁6份、氮化硅2份、乙酸乙酯8份、氯丁胶8份、含羧基端聚酰亚胺20份、铝-锆酸酯偶联剂16份、植物提取物25份、去离子水35份。The solar cell back sheet according to claim 1, wherein the weather-resistant layer comprises the following components in parts by weight: 20 parts of acrylic resin, 18 parts of urethane acrylate, 20 parts of isocyanate, and 3 parts of nano titanium dioxide , 18 parts of ethylene glycol, 30 parts of kaolin, 8 parts of nano silver, 32 parts of glass fiber, 6 parts of magnesium oxide, 2 parts of silicon nitride, 8 parts of ethyl acetate, 8 parts of neoprene, carboxyl-terminated polyamide 20 parts of amine, 16 parts of aluminum-zirconate coupling agent, 25 parts of plant extract, 35 parts of deionized water.
- 根据权利要求1所述的太阳能电池背板，其特征在于，所述耐候层的制备方法，包括以下步骤：步骤1，按照重量份数称取各组分；步骤2，将丙烯酸树脂、聚氨酯丙烯酸酯和氯丁胶混合投入反应釜中，搅拌并升温至120-150℃，再加入纳米二氧化钛，继续搅拌后喷雾干燥得混合物A；步骤3，将混合物A浸入植物提取物中，冷冻干燥后，球磨至100-200目的细粉，备用；步骤4，将高岭土、纳米银、玻璃纤维、氧化镁、氮化硅、乙酸乙酯和去离子水混合，投入反应釜中共混得混合物B；步骤5，将细粉和混合物B投入挤出机中，再加入异氰酸酯、含羧基端聚酰亚胺、铝-锆酸酯偶联剂，共混挤出得半成品；步骤6，将半成品微波处理1-5秒钟后，投入模具中定型后，脱模，即得耐候层。The solar cell back sheet according to claim 1, wherein the preparation method of the weather-resistant layer comprises the following steps: step 1, weighing each component according to parts by weight; step 2, mixing acrylic resin, urethane acrylic acid The ester and neoprene are mixed and put into the reaction kettle, stirred and heated to 120-150°C, then added with nano-titanium dioxide, and spray-dried to obtain a mixture A; step 3, the mixture A is immersed in the plant extract, and after freeze-drying, Ball-milled to 100-200 mesh fine powder, for later use; Step 4, mix kaolin, nano-silver, glass fiber, magnesium oxide, silicon nitride, ethyl acetate and deionized water, put it into a reaction kettle and blend to obtain mixture B; Step 5 , put the fine powder and mixture B into the extruder, then add isocyanate, carboxyl-terminated polyimide, aluminum-zirconate coupling agent, and blend and extrude to obtain a semi-finished product; step 6, microwave the semi-finished product for 1- After 5 seconds, put it into the mold and set it, and then demold it to get the weather-resistant layer.
- 根据权利要求3所述的太阳能电池背板，其特征在于，步骤2中喷雾干燥的温度为120-150℃。The solar cell back sheet according to claim 3, wherein the temperature of spray drying in step 2 is 120-150°C.
- 根据权利要求3所述的太阳能电池背板，其特征在于，步骤6中微波处理的功率为1000-1500W。The solar cell backplane according to claim 3, wherein the power of the microwave treatment in step 6 is 1000-1500W.
- 根据权利要求1所述的太阳能电池背板，其特征在于，所述结构增强层中氧化锌、氧化镁、联苯型聚酰亚胺、甘油按照摩尔比为12-18:2-8：25-28:1-5。The solar cell back sheet according to claim 1, wherein the zinc oxide, magnesium oxide, biphenyl type polyimide, and glycerin in the structural reinforcement layer are in a molar ratio of 12-18:2-8:25 -28:1-5.
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| CN114759110A (en) * | 2022-01-28 | 2022-07-15 | 浙江中聚材料有限公司 | Novel solar photovoltaic module and preparation method thereof |
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