CN111933734A - Novel solar cell backboard and preparation method thereof - Google Patents
Novel solar cell backboard and preparation method thereof Download PDFInfo
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- CN111933734A CN111933734A CN202010587827.2A CN202010587827A CN111933734A CN 111933734 A CN111933734 A CN 111933734A CN 202010587827 A CN202010587827 A CN 202010587827A CN 111933734 A CN111933734 A CN 111933734A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims abstract description 27
- 239000004713 Cyclic olefin copolymer Substances 0.000 claims abstract description 26
- 238000001125 extrusion Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims description 12
- 238000003851 corona treatment Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 8
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 7
- -1 cyclic olefin Chemical class 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 6
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- HGCIXCUEYOPUTN-UHFFFAOYSA-N cyclohexene Chemical compound C1CCC=CC1 HGCIXCUEYOPUTN-UHFFFAOYSA-N 0.000 claims description 4
- LPIQUOYDBNQMRZ-UHFFFAOYSA-N cyclopentene Chemical compound C1CC=CC1 LPIQUOYDBNQMRZ-UHFFFAOYSA-N 0.000 claims description 4
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N methylene hexane Natural products CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 claims description 4
- 230000009477 glass transition Effects 0.000 claims description 3
- 150000005673 monoalkenes Chemical class 0.000 claims description 3
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 claims description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 claims description 2
- CFBGXYDUODCMNS-UHFFFAOYSA-N cyclobutene Chemical compound C1CC=C1 CFBGXYDUODCMNS-UHFFFAOYSA-N 0.000 claims description 2
- OOXWYYGXTJLWHA-UHFFFAOYSA-N cyclopropene Chemical compound C1C=C1 OOXWYYGXTJLWHA-UHFFFAOYSA-N 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- AFFLGGQVNFXPEV-UHFFFAOYSA-N n-decene Natural products CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 claims description 2
- JFNLZVQOOSMTJK-KNVOCYPGSA-N norbornene Chemical compound C1[C@@H]2CC[C@H]1C=C2 JFNLZVQOOSMTJK-KNVOCYPGSA-N 0.000 claims description 2
- RGSFGYAAUTVSQA-UHFFFAOYSA-N pentamethylene Natural products C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N Propene Chemical compound CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims 2
- 239000000155 melt Substances 0.000 claims 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 claims 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 239000005977 Ethylene Substances 0.000 claims 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 claims 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 239000011347 resin Substances 0.000 abstract description 14
- 229920005989 resin Polymers 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 6
- 239000002904 solvent Substances 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract description 3
- 239000003973 paint Substances 0.000 abstract description 3
- 239000002356 single layer Substances 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 16
- 238000005266 casting Methods 0.000 description 12
- 238000010791 quenching Methods 0.000 description 12
- 230000000171 quenching effect Effects 0.000 description 12
- 239000002245 particle Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 238000002834 transmittance Methods 0.000 description 5
- 239000002033 PVDF binder Substances 0.000 description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 229920002367 Polyisobutene Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000004611 light stabiliser Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/049—Protective back sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2345/00—Characterised by the use of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring system; Derivatives of such polymers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention relates to the technical field of photovoltaic materials, and discloses a novel solar cell backboard and a preparation method thereof. The solar cell back plate is prepared from Cyclic Olefin Copolymer (COC) through the processes of melt extrusion, biaxial stretching and the like. The solar cell back plate provided by the invention has good dimensional stability, weather resistance and high water vapor barrier property, and meets the market demand of the solar cell back plate. The solar back plate is of a single-layer structure, the manufacturing process is simple, fluorocarbon resin or paint is not contained, no solvent is used in the processing process, and the solar back plate is environment-friendly.
Description
Technical Field
The invention relates to the technical field of photovoltaic materials, and particularly discloses a novel solar cell backboard and a preparation method thereof.
Background
The traditional solar cell back plate has a three-layer structure, namely an outer protective layer, a middle layer and an inner layer. The outer protective layer is PVDF and has good weather resistance, and one side of the outer protective layer is in contact with the atmosphere to prevent the damage of external water vapor to the back plate. The middle layer is a PET polyester film, has better insulativity and dimensional stability, and provides enough support strength for the back plate. The inner layer is EVA or polyolefin layer, which can improve the adhesive force between the back plate and the packaging adhesive film. However, the traditional solar cell back sheet has poor adhesion between the outer protection layer PVDF and the middle layer PET, and is easy to peel. Therefore, an adhesive layer, such as polyurethane, is often required to be coated between the PVDF layer and the PET layer. However, under the long-term irradiation of sunlight, the adhesive is easy to age and lose efficacy, so that the PET layer and the PVDF layer are separated, the PET is poor in hydrolysis resistance and aging resistance, and the influence of external water vapor on the battery piece can not be effectively prevented by the backboard due to the factors, and finally the solar module is caused to lose efficacy. Meanwhile, the traditional back plate with the multilayer structure has the disadvantages of complicated manufacturing process, more working procedures, high manufacturing cost and low production efficiency. And the processing process also uses an organic solvent, so that the environment is easily polluted.
Chinese patent publication No. CN107141619A discloses a polyisobutylene backsheet with ultra-low water vapor transmission rate. The back plate is of a single-layer structure and does not contain a fluorocarbon layer, a solvent is not required in the processing process, and the back plate is environment-friendly and efficient. However, polyisobutylene is a high-elastic rubber at room temperature, and has difficulty in processing and low production efficiency.
Chinese patent publication No. CN108075006A discloses an integrally formed five-layer structural back sheet. Through the scheme of five-layer co-extrusion, the compound process of glue is omitted, the process flow is greatly shortened, and the production cost is reduced. However, the scheme requires at least 4 extruders to work simultaneously, so that the equipment investment is large and the production efficiency is low. In the preparation process of the co-extruded film with the multilayer structure, due to different tensile strengths of different layer materials, the wrinkling phenomenon is easy to occur, the process difficulty is high, and the product is unstable.
Therefore, the solar cell back plate which is simple in manufacturing process, stable in size, good in weather resistance, low in water vapor transmittance and free of fluorocarbon materials is developed, and the solar cell back plate has important practical significance for the photovoltaic module industry.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a novel solar cell back plate which is simple in manufacturing process, stable and high in size, good in weather resistance, low in water vapor transmittance and free of fluorocarbon materials and a preparation method thereof.
In order to achieve the purpose, the novel solar cell backboard and the preparation method thereof are as follows:
in one aspect, the present invention provides a novel solar cell backsheet, the composition of which comprises a Cyclic Olefin Copolymer (COC). Still further, the novel solar cell backsheet consists of Cyclic Olefin Copolymer (COC). Further, the glass transition temperature of the Cyclic Olefin Copolymer (COC) is between 70 and 200 ℃.
Further, the Cyclic Olefin Copolymer (COC) is formed by polymerizing a cyclic olefin monomer with a mono-olefin monomer. Preferably, the cyclic olefin monomer comprises one or more of norbornene, cyclopropene, cyclobutene, cyclopentene and cyclohexene. The monoolefin monomer comprises one or more of ethylene, propylene, butylene, pentene, hexene, heptene, octene, nonene, decene and styrene.
Further, the cycloolefin copolymer (COC) may be specifically exemplified by one or more of APL6509, APL6013, APL6015, APL5014D0 of Mitsui, Japan, and TOPAS-480, TOPAS-480R, TOPAS-E48R, TOPAS-330R, TOPAS-RS420 of Hoechst, Germany. Preferred are APL6015 and/or TOPAS-E48R.
Furthermore, the thickness of the solar cell back plate is 100-500 microns.
The invention provides a preparation method of a novel solar cell backboard, which comprises the following steps:
(1) uniformly mixing a Cyclic Olefin Copolymer (COC) in a mixing barrel to obtain master batches;
(2) melting and extruding the master batch by a double-screw extruder or a single-screw extruder, rapidly cooling by a chill roll to form a cast sheet, and sequentially stretching the cast sheet longitudinally and transversely to form a film;
(3) and (3) after corona treatment, rolling and slitting the stretched film to obtain the novel solar cell backboard.
Furthermore, the temperature of melt extrusion is 260-290 ℃, the temperature of rapid cooling is 20-30 ℃, the stretching temperature is 150-180 ℃, the stretching ratio is 2-3 times, the temperature of corona treatment is room temperature, and the output voltage is 10-15 Kv.
Preferably, the temperature of melt extrusion is 280-290 ℃, the temperature of rapid cooling is 30 ℃, the stretching temperature is 170 ℃, the stretching ratio is 2.5 times, the temperature of corona treatment is room temperature, and the output voltage is 10 Kv.
Compared with the prior art, the invention has the following technical effects: the novel solar cell backboard provided by the invention mainly comprises Cyclic Olefin Copolymer (COC). The Cyclic Olefin Copolymer (COC) is a novel olefin copolymer and has the advantages of high water vapor barrier property, good hydrolysis resistance, high light transmittance and the like. Compared with polymers such as polyethylene and polypropylene, the main chain of the polymer contains rigid cyclic structural units, so that the free movement of the polymer along the main chain direction is limited, and the cyclic olefin copolymer has higher glass transition temperature and dimensional stability. Meanwhile, the polymer does not contain unsaturated double bonds, triple bonds and the like, so that the heat stability and the weather resistance of the polymer are good. Meanwhile, the transparent back plate is of a single-layer structure, compared with the traditional solar cell back plate of a multilayer structure, the processing procedure is simpler, resin or paint containing fluorocarbon materials is not needed, no solvent is used in the production process, and the solar cell back plate is safer and more environment-friendly.
Based on the reasons, the novel solar cell backboard provided by the invention has the characteristics of simple manufacturing process, stable and high size, good weather resistance, low water vapor transmittance and the like, and can meet the performance requirements of photovoltaic modules on various aspects of the backboard.
Detailed Description
The novel solar cell backboard is made of cyclic olefin copolymer with a rigid main chain. The solar cell back sheet has a series of advantages of good weather resistance, high dimensional stability, high water vapor barrier property and the like, and can meet various performance requirements required by the solar cell back sheet. The processing mode of extrusion molding is adopted, and the manufacturing process is simple. Compared with the traditional multilayer back plate, resin or paint containing fluorocarbon materials is not needed, no solvent is used in the production process, and the back plate is more environment-friendly.
The present application is described in further detail below with reference to specific examples, which should not be construed as limiting the scope of the invention as claimed.
Example 1
A novel solar cell backboard consists of resin APL 6013.
The preparation method of the novel solar cell back plate comprises the following steps:
(1) adding the resin raw materials into a double-screw extruder or a single-screw extruder for melt extrusion, and performing melt extrusion at 260 ℃. Then rapidly cooling by a quenching roller to form a casting sheet, wherein the temperature of the casting sheet quenching roller is 20 ℃. The cast sheet is stretched in the longitudinal and transverse directions in sequence to form a film. Wherein the longitudinal stretching temperature is 150 ℃, and the stretching ratio is 3 times; the transverse stretching temperature is 150 ℃, and the stretching ratio is 3 times.
(2) And carrying out corona treatment on the stretched film at room temperature, wherein the corona voltage is 10Kv, and rolling and slitting to obtain the novel solar cell backboard.
Example 2
A novel solar cell backboard consists of resin APL 6015.
The preparation method of the novel solar cell back plate comprises the following steps:
(1) adding the resin raw materials into a double-screw extruder or a single-screw extruder for melt extrusion, and performing melt extrusion at 290 ℃. Then rapidly cooling by a quenching roller to form a casting sheet, wherein the temperature of the casting sheet quenching roller is 30 ℃. The cast sheet is stretched in the longitudinal and transverse directions in sequence to form a film. Wherein the longitudinal stretching temperature is 180 ℃, and the stretching ratio is 2.5 times; the transverse stretching temperature is 180 ℃, and the stretching ratio is 2.5 times.
(2) And carrying out corona treatment on the stretched film at room temperature, wherein the corona voltage is 10Kv, and rolling and slitting to obtain the novel solar cell backboard.
Example 3
A novel solar cell back plate is composed of resin TOPAS-E48R.
The preparation method of the novel solar cell back plate comprises the following steps:
(1) adding the resin raw materials into a double-screw extruder or a single-screw extruder for melt extrusion, and performing melt extrusion at 270 ℃. Then rapidly cooling by a quenching roller to form a casting sheet, wherein the temperature of the casting sheet quenching roller is 25 ℃. The cast sheet is stretched in the longitudinal and transverse directions in sequence to form a film. Wherein the longitudinal stretching temperature is 170 ℃, and the stretching ratio is 2.5 times; the transverse stretching temperature is 170 ℃, and the stretching ratio is 2.5 times.
(2) And carrying out corona treatment on the stretched film at room temperature, wherein the corona voltage is 10Kv, and rolling and slitting to obtain the novel solar cell backboard.
Example 4
A novel solar cell backboard comprises the following compositions in parts by weight: 70 parts by mass of APL6015 and 30 parts by mass of APL5014D 0.
The preparation method of the novel solar cell back plate comprises the following steps:
(1) weighing resin particles according to the mass parts, adding the resin particles into a mixing barrel, and uniformly mixing to obtain master batches;
(2) adding the master batch into a double-screw extruder or a single-screw extruder for melt extrusion, and performing melt extrusion at 280 ℃. Then rapidly cooling by a quenching roller to form a casting sheet, wherein the temperature of the casting sheet quenching roller is 30 ℃. The cast sheet is stretched in the longitudinal and transverse directions in sequence to form a film. Wherein the longitudinal stretching temperature is 170 ℃, and the stretching ratio is 2.5 times; the transverse stretching temperature is 170 ℃, and the stretching ratio is 2.5 times.
(3) And carrying out corona treatment on the stretched film at room temperature, wherein the corona voltage is 10Kv, and rolling and slitting to obtain the novel solar cell backboard.
Example 5
A novel solar cell backboard comprises the following compositions in parts by weight: 60 parts by mass of APL6015, 20 parts by mass of TOPAS-E48R and 20 parts by mass of APL5014D 0. The preparation method of the novel solar cell back plate comprises the following steps:
(1) weighing resin particles according to the mass parts, adding the resin particles into a mixing barrel, and uniformly mixing to obtain master batches;
(2) adding the master batch into a double-screw extruder or a single-screw extruder for melt extrusion, and performing melt extrusion at 280 ℃. Then rapidly cooling by a quenching roller to form a casting sheet, wherein the temperature of the casting sheet quenching roller is 30 ℃. The cast sheet is stretched in the longitudinal and transverse directions in sequence to form a film. Wherein the longitudinal stretching temperature is 170 ℃, and the stretching ratio is 2.5 times; the transverse stretching temperature is 170 ℃, and the stretching ratio is 2.5 times.
(3) And carrying out corona treatment on the stretched film at room temperature, wherein the corona voltage is 10Kv, and rolling and slitting to obtain the novel solar cell backboard.
Example 6
A novel solar cell back plate comprises 100 parts by weight of APL6015 and 0.5 part by weight of light stabilizer 770.
The preparation method of the novel solar cell backboard comprises the following steps:
(1) the light stabilizer 770 is dissolved in industrial alcohol 2 times the mass of which is obtained to obtain an assistant solution. Weighing the resin particles APL6015 and the auxiliary agent solution in parts by mass, adding into a mixing barrel, uniformly mixing at 50 ℃, putting into a 50 ℃ oven, and drying to obtain master batches.
(2) Adding the master batch into a double-screw extruder or a single-screw extruder for melt extrusion, and performing melt extrusion at 290 ℃. Then rapidly cooling by a quenching roller to form a casting sheet, wherein the temperature of the casting sheet quenching roller is 30 ℃. The cast sheet is stretched in the longitudinal and transverse directions in sequence to form a film. Wherein the longitudinal stretching temperature is 180 ℃, and the stretching ratio is 2 times; the transverse stretching temperature is 180 ℃, and the stretching ratio is 2 times.
(3) And (3) carrying out corona treatment on the stretched film at room temperature, wherein the corona voltage is 15Kv, and rolling and slitting to obtain the novel solar cell backboard.
Comparative example
Two mainstream photovoltaic back sheets are commercially available.
The above products were subjected to various performance tests, and the test results are shown in table 1 below.
Table 1, various parameters of the product of the present invention and the conventional multilayer photovoltaic backsheet product on the market
As can be seen from the above table, the novel solar cell back sheet of the present invention has lower water vapor transmission rate and higher light transmittance compared with the commercially available products. And the performance of other aspects also meets the performance requirement of the solar cell back plate on the market.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The novel solar cell backboard is characterized in that the composition of the solar cell backboard comprises cyclic olefin copolymer.
2. The novel solar cell backsheet according to claim 1, wherein the composition of the solar cell backsheet consists of cyclic olefin copolymer.
3. The novel solar cell backsheet according to claim 2, wherein the glass transition temperature of the cyclic olefin copolymer is 70 to 200 ℃.
4. The novel solar cell backsheet of claim 3, wherein the cyclic olefin copolymer is formed from the polymerization of cyclic olefin monomers including one or more of norbornene, cyclopropene, cyclobutene, cyclopentene, cyclohexene and one or more of ethylene, propene, butene, pentene, hexene, heptene, octene, nonene, decene, styrene and mono-olefin monomers.
5. The novel solar cell backsheet according to claim 3, wherein the cyclic olefin copolymer consists of one or more of APL6509, APL6013, APL6015, APL5014D0 and TOPAS-480, TOPAS-480R, TOPAS-E48R, TOPAS-330R, TOPAS-RS 420.
6. The novel solar cell backsheet according to claim 5, wherein the cyclic olefin copolymer is APL6015 and/or TOPAS-E48R.
7. The novel solar cell backsheet according to any one of claims 1 to 6, wherein the thickness of the solar cell backsheet is 100 to 500 μm.
8. A method for preparing the novel solar cell backsheet according to any one of claims 1 to 6, comprising the steps of:
(1) uniformly mixing the cyclic olefin copolymer in a mixing cylinder to obtain master batches;
(2) melting and extruding the master batch by a double-screw extruder or a single-screw extruder, rapidly cooling by a chill roll to form a cast sheet, and sequentially stretching the cast sheet longitudinally and transversely to form a film;
(3) and (3) after corona treatment, rolling and slitting the stretched film to obtain the novel solar cell backboard.
9. The preparation method of the novel solar cell backboard according to claim 8, wherein the melt extrusion temperature is 260-290 ℃, the rapid cooling temperature is 20-30 ℃, the stretching temperature is 150-180 ℃, the stretching ratio is 2-3 times, the corona treatment temperature is room temperature, and the output voltage is 10-15 Kv.
10. The preparation method of the novel solar cell backboard according to claim 8, wherein the melt extrusion temperature is 280-290 ℃, the rapid cooling temperature is 30 ℃, the stretching temperature is 170 ℃, the stretching ratio is 2.5 times, the corona treatment temperature is room temperature, and the output voltage is 10 Kv.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010587827.2A CN111933734A (en) | 2020-06-24 | 2020-06-24 | Novel solar cell backboard and preparation method thereof |
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| JP2006294780A (en) * | 2005-04-08 | 2006-10-26 | Toppan Printing Co Ltd | Solar cell modules and back seat therefor |
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| US20120097220A1 (en) * | 2009-04-30 | 2012-04-26 | Mitsubishi Plastics, Inc. | Sheet for solar cell, and solar cell module |
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| CN109679262A (en) * | 2018-11-29 | 2019-04-26 | 常州回天新材料有限公司 | High measuring body polyolefin film thoroughly |
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| JP2006294780A (en) * | 2005-04-08 | 2006-10-26 | Toppan Printing Co Ltd | Solar cell modules and back seat therefor |
| CN101808805A (en) * | 2007-09-28 | 2010-08-18 | 富士胶片株式会社 | Cycloolefin resin film and process for producing the same |
| US20120097220A1 (en) * | 2009-04-30 | 2012-04-26 | Mitsubishi Plastics, Inc. | Sheet for solar cell, and solar cell module |
| CN104934494A (en) * | 2014-03-21 | 2015-09-23 | 3M创新有限公司 | Composite backboard used for solar cell and solar cell module including the composite backboard |
| CN109679262A (en) * | 2018-11-29 | 2019-04-26 | 常州回天新材料有限公司 | High measuring body polyolefin film thoroughly |
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Application publication date: 20201113 |