CN101979247A - Packaging back sheet for solar photovoltaic cell - Google Patents
Packaging back sheet for solar photovoltaic cell Download PDFInfo
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- CN101979247A CN101979247A CN 201010270196 CN201010270196A CN101979247A CN 101979247 A CN101979247 A CN 101979247A CN 201010270196 CN201010270196 CN 201010270196 CN 201010270196 A CN201010270196 A CN 201010270196A CN 101979247 A CN101979247 A CN 101979247A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention discloses a packaging back sheet for a solar photovoltaic cell, and belongs to the technical field of solar photovoltaic cells. The packaging back sheet comprises a first structure body formed by compounding a weather-resistant layer, a barrier layer, an electrical insulating layer and a bonding layer, and a second structure body containing polyvinyl butyral, polyurethane or ethylene-vinyl acetate copolymer and compounded with the first structure body in a hot melt compounding mode or a bond compounding mode, wherein the weather-resistant layer is made of a mixture of kynar, acrylic resin and inorganic materials; the barrier layer is positioned between the weather-resistant layer and the electrical insulating layer; and the bonding layer is positioned between the electrical insulating layer and the second structure body. The technical scheme can enhance the vapor blocking effect, ultraviolet resistance and lamination-peeling strength after hot lamination, shows light resistance, and avoids yellowing and degradation, so the service life of a solar photovoltaic module is prolonged.
Description
Technical field
The invention belongs to the solar-energy photo-voltaic cell technical field, be specifically related to a kind of solar-energy photo-voltaic cell that is used for encapsulating backboard.
Background technology
At present, the technology of solar cell mainly can be divided into crystal silicon solar batteries and thin-film solar cells two big classes, wherein the former is to use technology such as silicon chip utilization doping and diffusion to form light absorbing zone, and the latter then is to use plastic base or glass substrate, utilizes thin film technique to form light absorbing zone.Because crystal silicon solar batteries, makes silicon raw material wretched insufficiency to the high demand of silicon raw material, so the current thin film solar cell becomes a kind of main product in market gradually.
The order of crystal silicon solar batteries encapsulation is generally: photovoltaic glass, hot melt adhesive layer, battery sheet (silicon chip), hot melt adhesive layer and insulating back panel; And the hull cell light absorbing zone of thin-film solar cells is to form by depositing operation on electro-conductive glass, so it is in proper order: electro-conductive glass, hull cell layer, hot melt adhesive layer and packaged glass.Packaged glass is replaced by back veneer material in the silion cell assembly owing to too heavy, and the encapsulating material in the film battery assembly also has lightening gradually trend, but requires its back veneer material that good sealing property and water vapor barrier property are arranged.
US3133854, US513989 and US6632518 have all introduced pre-priming operation or fluorine carbon material tack coat on the base material of PET (PETG) and so on, to obtain the lamination backboard of endurance quality excellence, but the technology that patent is introduced is very loaded down with trivial details and harsh, and the backboard that obtains according to the patented technology introduction can not reach the degree that people get institute's phase to the barriering effect of steam, and the bonding strength between the encapsulating material is low.As adhesive layer, this bondline thickness is thin and can not produce crosslinkedly, can't carry out sealed package to the battery sheet by polyethylene or ethylene-vinyl acetate for one side of CN101615636A and the disclosed backboard of CN101582458A.The backboard with encapsulating material of CN101728437A can have sealing property at the compound one deck encapsulated layer of polyester layer, but the inactive surfaces of polyester layer is difficult for sticking, interlaminar strength is undesirable after the heat lamination, and direct irradiation of sunlight easily causes xanthochromia and degraded on polyester layer.The layer of aluminum membrane material though the described structure of CN101510567A has superposeed on encapsulating material can strengthen water vapor barrier property, and the implementing process complexity is easy to generate phenomenons such as fold, breakage during lamination.
In view of the existing shortcoming of above-mentioned prior art, the applicant has carried out good try, and technical scheme described below produces under this background.
Summary of the invention
Task of the present invention is to provide a kind of help to improve water vapor rejection effect and UV resistant performance, is of value to promoting the interlayer peel strength after the heat lamination and helping embodying light resistance, avoid the solar-energy photo-voltaic cell of xanthochromia and degraded with encapsulating backboard.
Task of the present invention is finished like this, a kind of solar-energy photo-voltaic cell is with encapsulating backboard, comprise by weathering layer, barrier layer, compound each other and first structure that constitutes of electric insulation layer and adhesive linkage and contain polyvinyl butyral resin, polyurethane or vinyl-vinyl acetate copolymer and with the heat fusing complex method or with bonding complex method second structure mutually compound with described first structure, described weathering layer is a polyvinylidene fluoride, the mixture of acrylic resin and inorganic material, described barrier layer is between weathering layer and electric insulation layer, and described adhesive linkage is between the electric insulation layer and second structure.
In a specific embodiment of the present invention, described barrier layer is an aluminium foil or at the pet film of a side surface by sputter or evaporation metal oxide; The material of described electric insulation layer is PETG, gathers 2,6-naphthalenedicarboxylic acid second diester or polyamide; Described adhesive linkage is an Alathon or by polyvinylidene fluoride, acrylic resin and inorganic material three's mixture, described Alathon is polyethylene or ethylene-vinyl acetate.
In another specific embodiment of the present invention, described acrylic resin is any one polymer or the copolymer in methyl methacrylate, butyl methacrylate, ethyl acrylate and the propylene ester butyl ester, and described inorganic material is titanium dioxide or carbon black.
In another specific embodiment of the present invention, the thickness of described first structure is 61-450 μ m, wherein: the thickness of described weathering layer and adhesive linkage respectively is 5-50 μ m, and the thickness of described barrier layer is 1-50 μ m, and the thickness of described electric insulation layer is 50-300 μ m; The thickness of described second structure is 300-600 μ m.
In another specific embodiment of the present invention, the number of plies of described weathering layer is one deck, two-layer or three layers.
Also have in the specific embodiment of the present invention, the parts by weight of described polyvinylidene fluoride, propylene esters resin and inorganic material are respectively: polyvinylidene fluoride 20-80 part, acrylic resin 10-50 part, inorganic material 1-30 part.
More of the present invention and in specific embodiment, described second structure also comprises and contains crosslinking agent.
In of the present invention and then specific embodiment, described crosslinking agent is 2,5-dimethylhexane-2, a kind of or its combination in 5-diperoxy hydrogen, methane hydrogen peroxide, the tert-butyl hydroperoxide carbonic acid-2-Octyl Nitrite.
Of the present invention again more and in specific embodiment, described second structure also comprises and contains a kind of of antioxidant, UV stabilizer, hydrolysis-resisting agent and fire retardant or its combination.
In again of the present invention and then specific embodiment, described antioxidant is Irganox1010; Described UV stabilizer is Tinuvin213; Described hydrolysis-resisting agent is Stabaxol I; Described fire retardant is a triphenyl phosphate.
Technical scheme provided by the invention is owing to constitute first structure by weathering layer, barrier layer, electric insulation layer and adhesive linkage, and weathering layer contains the mixture of polyvinylidene fluoride, acrylic resin and inorganic material, acrylic resin and polyvinylidene fluoride have good compatibility, thereby the interlayer peel strength after promoting barriering effect, UV resistant performance and promoting heat lamination to steam, and embodiment light resistance, avoid xanthochromia and degraded, prolonged the service life of solar photovoltaic assembly.
Description of drawings
Fig. 1 is a specific embodiment structure chart of the present invention.
Fig. 2 is the first example structure figure of weathering layer.
Fig. 3 is the second example structure figure of weathering layer.
The specific embodiment
Embodiment 1:
Ask for an interview Fig. 1, the solar-energy photo-voltaic cell encapsulation backboard shown in this figure is made of first structure 1 and second structure 2, and second structure 2 is mutually compound with first structure 1 in the mode of adhesive bond.
In the present embodiment, the thickness of the core of first structure 1 is 162 μ m, and the thickness of second structure 2 is 310 μ m, wherein: the thickness of weathering layer 11 is 6 μ m, the thickness of barrier layer 13 is 50 μ m, the thickness of electric insulation layer 15 is 100 μ m, and the thickness of adhesive linkage 17 is 6 μ m, and weathering layer 11 is a single layer structure.Wherein: the material of weathering layer 11 is made of the raw material of following parts by weight: 80 parts of polyvinylidene fluoride, 20 parts of acrylic resins, 28 parts of inorganic material, acrylic resin is a polymethyl methacrylate, and inorganic material is a titanium dioxide, barrier layer 13 uses aluminium foil, the material of aforesaid electric insulation layer 15 is a PETG, the material of aforesaid first, second, third adhesive layer 12,14,16 and the 4th adhesive layer 18 is polyurethane binder, and aforesaid adhesive linkage 17 complete materials with aforesaid weathering layer 11.
After 28 parts of 80 parts of aforesaid polyvinylidene fluoride, 20 parts of polymethyl methacrylates and titanium dioxide are mixed, by the screw extruder extruding pelletization, make titanium dioxide can be evenly dispersed in the resin as pigment, be that The tape casting makes the film as weathering layer 1 that thickness is 6 μ m with resin by extruding casting technique then, and carry out sided corona treatment.Make weathering layer 11, barrier layer 13, electric insulation layer 15 and adhesive linkage 17 enforcement dry types compound by first, second and the 3rd adhesive layer 12,14,16, compound by the 4th adhesive layer 18 and second structure 2 in compound.
Embodiment 2:
The thickness of first structure 1 is 354 μ m, wherein: with the thickness of weathering layer 11 is 50 μ m, change the thickness of barrier layer 13 into 4 μ m, change the thickness of electric insulation layer 15 into 250 μ m, change the thickness of adhesive linkage 17 into 50 μ m, the thickness of second structure 2 is 590 μ m, change the parts by weight that constitute polyvinylidene fluoride, acrylic resin and the inorganic material of weathering layer 11 into 20 parts, 12 parts and 1 part respectively, wherein: acrylic resin uses polybutyl methacrylate, and inorganic material is used carbon black; The material of first, second adhesive layer 12,14 and the 3rd adhesive layer 16 and the 4th adhesive layer 18 is all used acryloid cement, barrier layer 13 is a side surface has aluminium oxide by the sputtering technology sputter a pet film (PET film), the material of electric insulation layer 15 uses poly-2,6-naphthalenedicarboxylic acid second diester, the material of adhesive linkage 17 changes polyethylene into, the material of second structure 2 adopts polyvinyl butyral resin, and all the other are all with the description to embodiment 1.
Embodiment 3:
The thickness of first structure 1 is 70 μ m, the thickness of second structure 2 changes 450 μ m into, change the thickness of weathering layer 11 into 6 μ m, change the thickness of barrier layer 13 into 4 μ m, change the thickness of electric insulation layer 15 into 52 μ m, change the thickness of adhesive linkage 17 into 8 μ m, the material of electric insulation layer 15 uses polyamide; Change the parts by weight that constitute polyvinylidene fluoride, acrylic resin and the inorganic material of weathering layer 1 into 65 parts, 45 parts and 10 parts respectively, wherein: acrylic resin uses polybutyl methacrylate, adhesive linkage 17 uses ethylene-vinyl acetate, because first structure 1 and second structure 2 adopt the heat fusing complex method compound, therefore, it is polyurethane that present embodiment does not use the material of the 4th adhesive layer 18, the second structures 2, and all the other are all with the description to embodiment 1.
Embodiment 4:
The thickness of first structure 1 is 450 μ m, wherein: change the thickness of weathering layer 11 into 47 μ m, change the thickness of barrier layer 13 into 35 μ m, change the thickness of electric insulation layer 15 into 350 μ m, change the thickness of adhesive linkage 17 into 18 μ m, the thickness of second structure 2 is 600 μ m, the polyvinylidene fluoride of weathering layer 11 will be constituted, the parts by weight of acrylic resin and inorganic material change 40 parts respectively into, 30 parts and 15 parts, wherein: acrylic resin is the copolymer of butyl acrylate (15 parts) and methyl methacrylate (15 parts), barrier layer 13 is a side surface has silica by the evaporation process evaporation a PET film, it is the mixture that constitutes at 1: 1 by weight that the material of adhesive linkage 7 is used instead by polyethylene and ethylene-vinyl acetate, the material of second structure 2 is a polyvinyl butyral resin, and all the other are all with the description to embodiment 1.
Embodiment 5:
Ask for an interview Fig. 2, weathering layer 11 is a three-layer composite structure, and thickness is identical, thickness that present embodiment is selected is 45 μ m, by first, second, the 3rd composite bed 111,112,113 compound each other backs constitute weathering layer 11, this first, second, the 3rd composite bed 111,112, in 113, has one deck composite bed at least for containing fluorine film, the material that promptly has one deck at least is a polyvinylidene fluoride, the mixture of propylene esters resin and inorganic material, all the other two-layer materials then both can be polyvinylidene fluoride, also can be polyvinylidene fluoride, the mixture of acrylic resin and inorganic material can also be with first, second, the 3rd composite bed 111,112,113 all use aforesaid polyvinylidene fluoride, the mixture of acrylic resin and inorganic material.The thickness of first, second, third composite bed 111,112,113 respectively is 15 μ m.All the other are all with the description to embodiment 1.
Embodiment 6:
Ask for an interview Fig. 3, weathering layer 11 is a two layer composite structure, and thickness is identical, the thickness that present embodiment is selected is 20 μ m, by first, second composite bed 111,112 compound each other backs constitute first weathering layer 11, first, second composite bed 111, the material that one deck should be arranged in 112 is for containing fluorine film, the material that one deck promptly must be arranged is a polyvinylidene fluoride, the mixture of acrylic resin and inorganic material, but also can make first, second composite bed 111,112 material all uses polyvinylidene fluoride, the mixture of acrylic resin and inorganic material, wherein, first, second composite bed 111,112 thickness respectively is 10 μ m, and all the other are all with the description to embodiment 5.
Embodiment 7:
Embodiment 8:
Also include crosslinking agent and UV stabilizer in second structure 2, crosslinking agent is 2,5-dimethylhexane-2,5-diperoxy hydrogen is pressed arbitrary proportion and is mixed and the crosslinking agent of formation, UV stabilizer selects for use the vapour of being sold by Chinese Shanghai Pu and plastic cement Co., Ltd equally to cling to meticulous Tinuvin213 ultra-violet absorber, wherein: crosslinking agent shared mass percent in second structure 2 is 2.0%, and UV stabilizer shared mass percent in second structure is 0.7%, and all the other are all with the description to embodiment 1.
Embodiment 9:
In second structure 2, include crosslinking agent, UV stabilizer, hydrolysis-resisting agent and fire retardant, crosslinking agent is selected tert-butyl hydroperoxide carbonic acid-2-Octyl Nitrite and methane hydrogen peroxide for use, both ratios are arbitrary proportion, and these both be tert-butyl hydroperoxide carbonic acid-2-Octyl Nitrite and and methane hydrogen peroxide shared mass percent in second structure 2 be 1.5%, UV stabilizer, hydrolysis-resisting agent and fire retardant three shared mass percent in second structure 2 is 1.8%, wherein: the trade mark of UV stabilizer is with embodiment 8, hydrolysis-resisting agent preferably uses the Stabaxo I type hydrolysis-resisting agent of the Lay mattress chemistry group product of being sold by Tonghua far away, BeiJing, China industrial and commercial trade Co., Ltd, and fire retardant uses triphenyl phosphate, and all the other are all with the description to embodiment 1.
Embodiment 10:
In second structure 2, include antioxidant (source with embodiment 7), UV stabilizer (source is with embodiment 8 and 9), hydrolysis-resisting agent (source is with embodiment 9) and fire retardant (with embodiment 9), these four kinds of function additives respectively account for second structure 2 weight 0.5%.All the other are all with the description to embodiment 1.
Claims (10)
1. a solar-energy photo-voltaic cell is with encapsulating backboard, it is characterized in that comprising by weathering layer (11), barrier layer (13), compound each other and first structure (1) that constitutes of electric insulation layer (15) and adhesive linkage (17) and contain polyvinyl butyral resin, polyurethane or vinyl-vinyl acetate copolymer and with the heat fusing complex method or with bonding complex method second structure (2) mutually compound with described first structure (1), described weathering layer (11) is a polyvinylidene fluoride, the mixture of acrylic resin and inorganic material, described barrier layer (13) is positioned between weathering layer (11) and the electric insulation layer (15), and described adhesive linkage (17) is positioned between electric insulation layer (15) and second structure (2).
2. solar-energy photo-voltaic cell according to claim 1 is characterized in that with the encapsulation backboard described barrier layer (13) is for aluminium foil or at the pet film of a side surface by sputter or evaporation metal oxide; The material of described electric insulation layer (15) is PETG, gathers 2,6-naphthalenedicarboxylic acid second diester or polyamide; Described adhesive linkage (17) is an Alathon or by polyvinylidene fluoride, acrylic resin and inorganic material three's mixture, described Alathon is polyethylene or ethylene-vinyl acetate.
3. solar-energy photo-voltaic cell according to claim 1 and 2 is with encapsulating backboard, it is characterized in that described acrylic resin is any one polymer or the copolymer in methyl methacrylate, butyl methacrylate, ethyl acrylate and the propylene ester butyl ester, described inorganic material is titanium dioxide or carbon black.
4. solar-energy photo-voltaic cell according to claim 1 is with encapsulating backboard, the thickness that it is characterized in that described first structure (1) is 61-450 μ m, wherein: the thickness of described weathering layer (11) and adhesive linkage (17) respectively is 5-50 μ m, the thickness of described barrier layer (13) is 1-50 μ m, and the thickness of described electric insulation layer (15) is 50-300 μ m; The thickness of described second structure (2) is 300-600 μ m.
5. solar-energy photo-voltaic cell according to claim 1 is with the encapsulation backboard, and the number of plies that it is characterized in that described weathering layer (11) is one deck, two-layer or three layers.
6. solar-energy photo-voltaic cell according to claim 1 and 2 is with encapsulating backboard, the parts by weight that it is characterized in that described polyvinylidene fluoride, propylene esters resin and inorganic material are respectively: polyvinylidene fluoride 20-80 part, acrylic resin 10-50 part, inorganic material 1-30 part.
According to claim 1 or 4 described solar-energy photo-voltaic cells with the encapsulation backboards, it is characterized in that described second structure (2) also comprises contains crosslinking agent.
8. solar-energy photo-voltaic cell according to claim 7 is with encapsulating backboard, it is characterized in that described crosslinking agent is 2,5-dimethylhexane-2, a kind of or its combination in 5-diperoxy hydrogen, methane hydrogen peroxide, the tert-butyl hydroperoxide carbonic acid-2-Octyl Nitrite.
According to claim 1 or 4 described solar-energy photo-voltaic cells with the encapsulation backboards, it is characterized in that described second structure (2) also comprises contains a kind of of antioxidant, UV stabilizer, hydrolysis-resisting agent and fire retardant or its combination.
10. solar-energy photo-voltaic cell according to claim 9 is characterized in that with the encapsulation backboard described antioxidant is Irganox1010; Described UV stabilizer is Tinuvin213; Described hydrolysis-resisting agent is Stabaxol I; Described fire retardant is a triphenyl phosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010270196 CN101979247A (en) | 2010-09-02 | 2010-09-02 | Packaging back sheet for solar photovoltaic cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010270196 CN101979247A (en) | 2010-09-02 | 2010-09-02 | Packaging back sheet for solar photovoltaic cell |
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| CN101979247A true CN101979247A (en) | 2011-02-23 |
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| CN 201010270196 Pending CN101979247A (en) | 2010-09-02 | 2010-09-02 | Packaging back sheet for solar photovoltaic cell |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102945877A (en) * | 2012-11-30 | 2013-02-27 | 云南云天化股份有限公司 | Solar cell back plate and solar cell |
| CN104356791A (en) * | 2014-11-14 | 2015-02-18 | 无锡中洁能源技术有限公司 | PTFE coating material with high water vapor barrier property and preparation method thereof |
| CN106024950A (en) * | 2016-07-26 | 2016-10-12 | 无锡中洁能源技术有限公司 | Solar cell backboard with high adhesion rate |
| CN113013181A (en) * | 2021-02-23 | 2021-06-22 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
| CN114551622A (en) * | 2022-01-26 | 2022-05-27 | 浙江海利得新材料股份有限公司 | Flexible reflecting material for increasing light transmittance of double-glass photovoltaic panel and preparation method and application thereof |
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| JP2009107235A (en) * | 2007-10-31 | 2009-05-21 | Toppan Printing Co Ltd | Laminate |
| CN201266610Y (en) * | 2008-09-02 | 2009-07-01 | 中国乐凯胶片集团公司 | Solar cell backboard |
| CN101582458A (en) * | 2009-06-26 | 2009-11-18 | 上海海优威电子技术有限公司 | Novel solar battery backboard |
| CN101696309A (en) * | 2009-10-13 | 2010-04-21 | 常熟市冠日新材料有限公司 | Fluorine-contained film and preparation method thereof |
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| JP2009107235A (en) * | 2007-10-31 | 2009-05-21 | Toppan Printing Co Ltd | Laminate |
| CN101290950A (en) * | 2008-05-23 | 2008-10-22 | 嵊州市新化科技有限公司 | Back film of solar cell and preparing technique thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102945877A (en) * | 2012-11-30 | 2013-02-27 | 云南云天化股份有限公司 | Solar cell back plate and solar cell |
| CN102945877B (en) * | 2012-11-30 | 2016-03-16 | 云南云天化股份有限公司 | A kind of solar cell backboard and solar cell |
| CN104356791A (en) * | 2014-11-14 | 2015-02-18 | 无锡中洁能源技术有限公司 | PTFE coating material with high water vapor barrier property and preparation method thereof |
| CN106024950A (en) * | 2016-07-26 | 2016-10-12 | 无锡中洁能源技术有限公司 | Solar cell backboard with high adhesion rate |
| CN113013181A (en) * | 2021-02-23 | 2021-06-22 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
| CN113013181B (en) * | 2021-02-23 | 2024-04-09 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
| CN114551622A (en) * | 2022-01-26 | 2022-05-27 | 浙江海利得新材料股份有限公司 | Flexible reflecting material for increasing light transmittance of double-glass photovoltaic panel and preparation method and application thereof |
| CN114551622B (en) * | 2022-01-26 | 2022-08-30 | 浙江海利得新材料股份有限公司 | Flexible reflecting material for increasing light transmittance of double-glass photovoltaic panel and preparation method and application thereof |
| WO2023142740A1 (en) * | 2022-01-26 | 2023-08-03 | 浙江海利得新材料股份有限公司 | Flexible reflecting material capable of increasing glazing rate of double-glass photovoltaic panel, and preparation method therefor and use thereof |
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Application publication date: 20110223 |