CN102963090A - Insulation back plate for solar photovoltaic assembly and preparation method of back plate - Google Patents
Insulation back plate for solar photovoltaic assembly and preparation method of back plate Download PDFInfo
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- CN102963090A CN102963090A CN2012104746854A CN201210474685A CN102963090A CN 102963090 A CN102963090 A CN 102963090A CN 2012104746854 A CN2012104746854 A CN 2012104746854A CN 201210474685 A CN201210474685 A CN 201210474685A CN 102963090 A CN102963090 A CN 102963090A
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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
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- 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 an insulation back plate for a solar photovoltaic component, which belongs to the technical field of solar photovoltaic batteries. The insulation back plate comprises a weather-resistant layer, a bonding layer and a reinforcing layer, wherein the weather-resistant layer is outward in a using state; the bonding layer is combined with solar photovoltaic glass in a using state; and the reinforcing layer is positioned between the weather-resistant layer and the bonding layer. The insulation back plate is characterized in that the weather-resistant layer is made from polyethylene or polypropylene; the bonding layer is made from ethylene vinyl acetate copolymer; and the reinforcing layer is made of nylon. The insulation back plate for the solar photovoltaic assembly has the advantages that because the weather-resistant layer, the bonding layer and the reinforcing layer are respectively made from the polyethylene or polypropylene, the ethylene vinyl acetate copolymer and the nylon, the insulation back plate has ideal weather-resistant property, hydrophobicity, aging resistance, mechanical property as well as favorable bonding performance with solar photovoltaic glass plates. A preparation method provided by the invention has the advantages of high automation degree, simplicity in operation, not harsh technology conditions and the like.
Description
Technical field
The invention belongs to the solar-energy photo-voltaic cell technical field, be specifically related to a kind of solar photovoltaic assembly insulating back panel, and relate to its preparation method
Background technology
As the industry's knowledge of the reason, the overall structure of solar-energy photo-voltaic cell comprises: framework (usually using the aluminium frame), be installed on solar energy photovoltaic glass on the framework, be positioned at cell piece (also claiming silicon chip or silicon plate), hot melt adhesive layer (EVA layer), terminal box and the insulating back panel of solar energy photovoltaic glass below.Because it is outdoor that solar photovoltaic assembly is installed in usually, therefore require undoubtedly insulating back panel to have remarkable weatherability.
The structure of insulating back panel is public domain by the open of the following patent documentation that is not limited to, the solar photovoltaic assembly insulating back panel that A. Granted publication CN201387885Y recommends; The insulating back panel that is used for solar photovoltaic assembly that B.CN201387887Y introduces; What C. publication number CN101582459A provided belongs to solar cell backboard (being insulating back panel) as weathering protective layer take the modified polyvinilidene fluoride alloy; D. the novel solar battery backboard that discloses of publication number CN101582458A; The four-layer structure back board of solar cell of the minimizing adhesive linkage that E.CN101615636A discloses; F. the novel solar battery backboard that provides of publication number CN101431108A, etc.
Not accommodating doubting, the weathering layer that is positioned at the electric insulation layer both sides plays conclusive effect to the quality of insulating back panel, in the prior art, that produce and polyvinyl fluoride thin film (PVDF) that have patent has monopolized the used material market of weathering layer that is used for consisting of insulating back panel basically by E.I.Du Pont Company, and price is enough to make ordinary enterprises to be stepped back.In view of this, the many enterprises of China are all at the film as weathering layer of being devoted to develop the high-quality cheapness based on the autonomous height of industry, but not only had no up to now but also heard the report that obtains substantive breakthroughs are arranged.Especially still lack referential technology enlightenment in the published foreign literature.For example US3133854, US513989 and US6632518 have all introduced the PETG at PET() and so on base material on pre-priming operation or fluorine carbon material tack coat, to obtain the lamination backboard of endurance quality excellence, but the technique of patent Introduction 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.
The document CN101582458A that exemplifies previously and CN101582459A have all introduced with Kynoar and inorganic matter (inorganic filler) and have constituted weathering layer, as the insulating back panel of solar photovoltaic assembly.But; because Kynoar is from very easily being orientated when film forming; and the decomposition of Kynoar is accelerated in the inorganic filler of adding easily; and the compatibility of inorganic filler and Kynoar is fragile (shortcoming) comparatively; so the weathering layer as protectiveness that these two patent application schemes obtain is prone to the situation that out-phase is separated in use for some time; thereby cause the protective value of insulating back panel to lose efficacy, and then the service life of bringing disaster to solar photovoltaic assembly.
In general, the solar photovoltaic assembly in the prior art is divided into three kinds with insulating back panel: the one, and two-sided PVDF film, the centre is pet layer, uses polyester that the three is bondd, this structure has good weatherability; Two are three layers is PET, and is bonded as one with polyester, and the weatherability of this structure is inferior to the former; The 3rd, main material adopts PA(nylon), and by the acquisition of coextrusion casting method, the weatherability of this insulating back panel is between between the two aforesaid, but stability is comparatively desirable.
Make a general survey of the solar photovoltaic assembly insulating back panel in the prior art, all be not enough to get both with the weatherability of excellence, hydrophobicity, ageing resistance, mechanical property and with the adhesive property of solar energy photovoltaic glass, therefore be necessary to be improved.For this reason, the applicant has made good try, has finally formed technical scheme described below.
In addition, be showed no in up to now disclosed patent and non-patent literature that all automaticities are high, simple to operate, process conditions are controlled and can make the solar photovoltaic assembly of acquisition embody all sidedly preparation method's the enlightenment of the performance of aforementioned excellence with insulating back panel
Summary of the invention
Task of the present invention be to provide a kind of help to embody comprehensively excellent weatherability, hydrophobicity, ageing resistance, mechanical property and with the solar photovoltaic assembly insulating back panel of the desirable adhesive property of solar energy photovoltaic glass.
Another task of the present invention is to provide the preparation method of a kind of solar photovoltaic assembly with insulating back panel, and the method automaticity is high, simple to operate, process conditions are not harsh and can ensure solar photovoltaic assembly comprehensive embodiment of the described technique effect of insulating back panel.
Task of the present invention is finished like this, a kind of solar photovoltaic assembly insulating back panel, be included under the use state weathering layer of a side outward, at the adhesive linkage of being combined with solar energy photovoltaic glass under the use state and the enhancement layer between described weathering layer and adhesive linkage, be characterised in that: described weathering layer is polyethylene or polypropylene, described adhesive linkage is ethylene-vinyl acetate copolymer, and described enhancement layer is nylon.
In a specific embodiment of the present invention, the thickness of described weathering layer is 0.1-0.2 ㎜, and the thickness of described adhesive linkage and enhancement layer is 0.09-0.12 ㎜.
In another specific embodiment of the present invention, described polyethylene is high density polyethylene (HDPE); Described nylon is nylon 6, nylon 66, NYLON610 or nylon 1010.
Another task of the present invention is finished like this, and a kind of solar photovoltaic assembly preparation method of insulating back panel may further comprise the steps:
A) get the raw materials ready, with 100 parts of the polyethylene that takes by weighing by weight or polypropylene, gas-phase silica 5-20 part, causing double screw extruder after age resister 0.1-5 part and tackifier 0.1-5 part input mixer mix melt extrudes, pelletizing after the cooling, obtain the weathering layer material, for subsequent use, choose ethylene-vinyl acetate copolymer as the adhesive linkage material, for subsequent use, with 100 parts of the nylon that take by weighing by weight, causing double screw extruder behind the mixing in gas-phase silica 1-10 part and the tackifier 0.1-5 part input mixer melt extrudes, pelletizing after the cooling, the layer material that is enhanced, for subsequent use;
B) melting coextrusion, weathering layer material, adhesive linkage material and enhancement layer material are introduced respectively extruder separately and are imported triple extrusion die head coextrusion casting film-forming by separately extruder, obtain after the rolling use under the state outward a side as weathering layer, using the side that combines with the solar energy photovoltaic glass plate under the state to be the solar photovoltaic assembly insulating back panel of enhancement layer as adhesive linkage with between weathering layer and adhesive linkage.
In another specific embodiment of the present invention, steps A) gas-phase silica described in is the hydrophobic type gas-phase silica.
In another specific embodiment of the present invention, described hydrophobic type gas-phase silica is the synthetic and silica that processed through silane coupler of vapor phase method.
Also have in the specific embodiment steps A of the present invention) described in age resister be phosphite ester compound or polynary hindered phenolic compound.
More of the present invention and in specific embodiment, described phosphite ester compound is Trimethyl phosphite, triethyl phosphite, triphenyl phosphite or diphenyl isodecyl phosphite ester; Described polynary hindered phenolic compound is BHT or 3(3,5 di-tert-butyl-hydroxy phenyls) the propionic acid octadecyl ester.
In of the present invention and then specific embodiment, steps A) tackifier described in are KH792, KH560, KH550 or tetrabutyl titanate.
Therefore technical scheme provided by the invention has desirable weatherability, hydrophobicity, ageing resistance, mechanical property and the adhesive property good with the solar energy photovoltaic glass plate because weathering layer, adhesive linkage and enhancement layer have used respectively polyethylene or polypropylene, ethene vinegar ethylene copolymer and nylon; The preparation method who provides has the strong points such as automaticity height, simple to operate and process conditions be not harsh.
Description of drawings
Fig. 1 is the embodiments of the invention structure chart.
The specific embodiment
Embodiment 1:
See also Fig. 1, the solar photovoltaic assembly of preparation Fig. 1 structure is as follows with the step of insulating back panel:
A) get the raw materials ready, with 100 parts of the high density polyethylene (HDPE)s (powder) that take by weighing by weight, vapor phase method synthetic and be 10 parts of aforesaid gas-phase silicas through the silica that silane coupler was processed, 1 part and 0.5 part KH792 of Trimethyl phosphite drops into the abundant mixing of mixer, then causing double screw extruder melt extrudes, pelletizing after the water cooling, obtain the weathering layer material after the drying, for subsequent use, take by weighing by weight ethylene-vinyl acetate copolymer (EVA) as the adhesive linkage material, for subsequent use, with 100 parts of nylon 6 that take by weighing by weight, by vapor phase method synthetic and be to cause double screw extruder behind the abundant mixing in 1 part of gas-phase silica and the 0.5 part of KH560 input mixer to melt extrude through the silica that silane coupler was processed, pelletizing and the layer material that is enhanced after drying are for subsequent use after the water cooling;
B) melting coextrusion, will be by steps A) the weathering layer material that obtains, adhesive linkage material and enhancement layer material are introduced respectively separately extruder to be screw extruder and to import triple extrusion die head coextrusion casting film-forming by extruder, obtain after the rolling using under the state side outward to be weathering layer 1 by structure shown in Figure 1, use under the state with a side of solar energy photovoltaic glass plate bonding (combining) as adhesive linkage 2 and between weathering layer 1 and adhesive linkage 2 as enhancement layer 3 and thickness be 0.3 ㎜ the solar photovoltaic assembly insulating back panel, wherein: the thickness of weathering layer 1 is 0.1 ㎜, and the thickness of adhesive linkage 2 and enhancement layer 3 respectively is 0.1 ㎜.
The concept of the melting coextrusion of mentioning in the present embodiment refers to have three extruders, be respectively applied to be extruded onto the coextrusion die head for weathering layer material, adhesive linkage material and enhancement layer material and namely import the three-layer co-extruded die head that goes out, concrete intension belongs to known technology, for example can be understood by the deciphering to invention patent mandate notification number CN101381017B and CN100364751C.Wherein, the coextrusion die head of CN100364751C is two runners, but according to the reason of drawing inferences about other cases from one instance, and what the present invention relates to three-layer co-extrudedly goes out die head and have three runners, i.e. inside and outside laminar flow road and the intermediate layer runner between inside and outside laminar flow road.
Embodiment 2:
A) get the raw materials ready, with 100 parts of the polypropylene (powder) that take by weighing by weight, vapor phase method synthetic and be 5 parts of aforesaid gas-phase silicas through the silica that silane coupler was processed, 0.5 part and 0.8 part KH792 of triethyl phosphite drops into the abundant mixing of mixer, then causing double screw extruder melt extrudes, pelletizing after the water cooling, obtain the weathering layer material after the drying, for subsequent use, take by weighing by weight ethylene-vinyl acetate copolymer (EVA) as the adhesive linkage material, for subsequent use, with 100 parts of nylon 66 that take by weighing by weight, by vapor phase method synthetic and be to cause double screw extruder behind the abundant mixing in 5 parts of gas-phase silicas and the 0.8 part of KH550 input mixer to melt extrude through the silica that silane coupler was processed, pelletizing and the layer material that is enhanced after drying are for subsequent use after the water cooling;
B) melting coextrusion, will be by steps A) the weathering layer material that obtains, adhesive linkage material and enhancement layer material are introduced respectively separately extruder to be screw extruder and to import triple extrusion die head coextrusion casting film-forming by extruder, obtain after the rolling using under the state side outward to be weathering layer 1 by structure shown in Figure 1, use under the state with a side of solar energy photovoltaic glass plate bonding (combining) as adhesive linkage 2 and between weathering layer 1 and adhesive linkage 2 as enhancement layer 3 and thickness be 0.38 ㎜ the solar photovoltaic assembly insulating back panel, wherein: the thickness of weathering layer 1 is 0.2 ㎜, and the thickness of adhesive linkage 2 and enhancement layer 3 respectively is 0.09 ㎜.All the other are all with the description to embodiment 1.
Embodiment 3:
A) get the raw materials ready, with 100 parts of the high density polyethylene (HDPE)s (powder) that take by weighing by weight, vapor phase method synthetic and be 15 parts of aforesaid gas-phase silicas through the silica that silane coupler was processed, 2,6-di-t-butyl-5 parts and 5 parts KH550 of 4-cresols drop into the abundant mixing of mixer, then causing double screw extruder melt extrudes, pelletizing after the water cooling, obtain the weathering layer material after the drying, for subsequent use, take by weighing by weight ethylene-vinyl acetate copolymer (EVA) as the adhesive linkage material, for subsequent use, with 100 parts of nylon 1010s that take by weighing by weight, by vapor phase method synthetic and be to cause double screw extruder behind the abundant mixing in 10 parts of gas-phase silicas and the 0.1 part of KH550 input mixer to melt extrude through the silica that silane coupler was processed, pelletizing and the layer material that is enhanced after drying are for subsequent use after the water cooling;
B) melting coextrusion, will be by steps A) the weathering layer material that obtains, adhesive linkage material and enhancement layer material are introduced respectively separately extruder to be screw extruder and to import triple extrusion die head coextrusion casting film-forming by extruder, obtain after the rolling using under the state side outward to be weathering layer 1 by structure shown in Figure 1, use under the state with a side of solar energy photovoltaic glass plate bonding (combining) as adhesive linkage 2 and between weathering layer 1 and adhesive linkage 2 as enhancement layer 3 and thickness be 0.39 ㎜ the solar photovoltaic assembly insulating back panel, wherein: the thickness of weathering layer 1 is 0.15 ㎜, and the thickness of adhesive linkage 2 and enhancement layer 3 respectively is 0.12 ㎜.All the other are all with the description to embodiment 1.
Embodiment 4:
A) get the raw materials ready, with 100 parts of the high density polyethylene (HDPE)s (powder) that take by weighing by weight, vapor phase method synthetic and be 20 parts of aforesaid gas-phase silicas through the silica that silane coupler was processed, 0.1 part and 0.1 part tetrabutyl titanate of triphenyl phosphite drops into the abundant mixing of mixer, then causing double screw extruder melt extrudes, pelletizing after the water cooling, obtain the weathering layer material after the drying, for subsequent use, take by weighing by weight ethylene-vinyl acetate copolymer (EVA) as the adhesive linkage material, for subsequent use, with 100 parts of nylon 1010s that take by weighing by weight, by vapor phase method synthetic and be to cause double screw extruder behind the abundant mixing in 3 parts of gas-phase silicas and the 2.5 parts of tetrabutyl titanate input mixers to melt extrude through the silica that silane coupler was processed, pelletizing and the layer material that is enhanced after drying are for subsequent use after the water cooling;
B) melting coextrusion, will be by steps A) the weathering layer material that obtains, adhesive linkage material and enhancement layer material are introduced respectively separately extruder to be screw extruder and to import triple extrusion die head coextrusion casting film-forming by extruder, obtain after the rolling using under the state side outward to be weathering layer 1 by structure shown in Figure 1, use under the state with a side of solar energy photovoltaic glass plate bonding (combining) as adhesive linkage 2 and between weathering layer 1 and adhesive linkage 2 as enhancement layer 3 and thickness be 0.4 ㎜ the solar photovoltaic assembly insulating back panel, wherein: the thickness of weathering layer 1 is 0.18 ㎜, and the thickness of adhesive linkage 2 and enhancement layer 3 respectively is 0.11 ㎜.All the other are all with the description to embodiment.
Embodiment 5:
A) get the raw materials ready, with 100 parts of the polypropylene (powder) that take by weighing by weight, vapor phase method synthetic and be 18 parts of aforesaid gas-phase silicas through the silica that silane coupler was processed, 3(3,5 di-tert-butyl-hydroxy phenyls) 3 parts and 2.5 parts KH792 of propionic acid octadecyl ester drop into the abundant mixing of mixer, then causing double screw extruder melt extrudes, pelletizing after the water cooling, obtain the weathering layer material after the drying, for subsequent use, take by weighing by weight ethylene-vinyl acetate copolymer (EVA) as the adhesive linkage material, for subsequent use, with 100 parts of nylon 66 that take by weighing by weight, by vapor phase method synthetic and be to cause double screw extruder behind the abundant mixing in 7 parts of gas-phase silicas and the 1.8 parts of KH792 input mixers to melt extrude through the silica that silane coupler was processed, pelletizing and the layer material that is enhanced after drying are for subsequent use after the water cooling;
B) melting coextrusion, will be by steps A) the weathering layer material that obtains, adhesive linkage material and enhancement layer material are introduced respectively separately extruder to be screw extruder and to import triple extrusion die head coextrusion casting film-forming by extruder, obtain after the rolling using under the state side outward to be weathering layer 1 by structure shown in Figure 1, use under the state with a side of solar energy photovoltaic glass plate bonding (combining) as adhesive linkage 2 and between weathering layer 1 and adhesive linkage 2 as enhancement layer 3 and thickness be 0.37 ㎜ the solar photovoltaic assembly insulating back panel, wherein: the thickness of weathering layer 1 is 0.13 ㎜, and the thickness of adhesive linkage 2 and enhancement layer 3 respectively is 0.12 ㎜.All the other are all with the description to embodiment
Claims (9)
1.
A kind of solar photovoltaic assembly insulating back panel, be included under the use state side outward weathering layer (1), the adhesive linkage of being combined with solar energy photovoltaic glass under the use state (2) and be positioned at described weathering layer (1) and adhesive linkage (2) between enhancement layer (3), it is characterized in that: described weathering layer (1) is polyethylene or polypropylene, described adhesive linkage (2) is ethylene-vinyl acetate copolymer, and described enhancement layer (3) is nylon.
2.
Solar photovoltaic assembly insulating back panel according to claim 1, the thickness that it is characterized in that described weathering layer (1) is 0.1-0.2 ㎜, the thickness of described adhesive linkage (2) and enhancement layer (3) is 0.09-0.12 ㎜.
3.
Solar photovoltaic assembly insulating back panel according to claim 1 is characterized in that described polyethylene is high density polyethylene (HDPE); Described nylon is nylon 6, nylon 66, NYLON610 or nylon 1010.
4.
A kind of solar photovoltaic assembly as claimed in claim 1 preparation method of insulating back panel is characterized in that may further comprise the steps:
A) get the raw materials ready, with 100 parts of the polyethylene that takes by weighing by weight or polypropylene, gas-phase silica 5-20 part, causing double screw extruder after age resister 0.1-5 part and tackifier 0.1-5 part input mixer mix melt extrudes, pelletizing after the cooling, obtain the weathering layer material, for subsequent use, choose ethylene-vinyl acetate copolymer as the adhesive linkage material, for subsequent use, with 100 parts of the nylon that take by weighing by weight, causing double screw extruder behind the mixing in gas-phase silica 1-10 part and the tackifier 0.1-5 part input mixer melt extrudes, pelletizing after the cooling, the layer material that is enhanced, for subsequent use;
B) melting coextrusion, weathering layer material, adhesive linkage material and enhancement layer material are introduced respectively extruder separately and are imported triple extrusion die head coextrusion casting film-forming by separately extruder, obtain after the rolling use under the state outward a side as weathering layer (1), using the side that combines with the solar energy photovoltaic glass plate under the state as adhesive linkage (2) and be positioned at weathering layer (1) and adhesive linkage (2) between be the solar photovoltaic assembly insulating back panel of enhancement layer (3).
5.
Solar photovoltaic assembly according to claim 4 is characterized in that steps A with the preparation method of insulating back panel) described in gas-phase silica be the hydrophobic type gas-phase silica.
6.
Solar photovoltaic assembly according to claim 5 is with the preparation method of insulating back panel, it is characterized in that described hydrophobic type gas-phase silica is the synthetic and silica that processed through silane coupler of vapor phase method.
7.
Solar photovoltaic assembly according to claim 4 is characterized in that steps A with the preparation method of insulating back panel) described in age resister be phosphite ester compound or polynary hindered phenolic compound.
8.
Solar photovoltaic assembly according to claim 7 is characterized in that with the preparation method of insulating back panel described phosphite ester compound is Trimethyl phosphite, triethyl phosphite, triphenyl phosphite or diphenyl isodecyl phosphite ester; Described polynary hindered phenolic compound is BHT or 3(3,5 di-tert-butyl-hydroxy phenyls) the propionic acid octadecyl ester.
9.
Solar photovoltaic assembly according to claim 4 is characterized in that steps A with the preparation method of insulating back panel) described in tackifier be KH792, KH560, KH550 or tetrabutyl titanate
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103280479A (en) * | 2013-05-23 | 2013-09-04 | 常州回天新材料有限公司 | Novel fluoride-free multilayer coextrusion solar cell back plate and preparation method thereof |
| CN104362207A (en) * | 2014-11-14 | 2015-02-18 | 无锡中洁能源技术有限公司 | High-resistance solar panel back membrane and preparation method thereof |
| WO2015103872A1 (en) * | 2014-01-08 | 2015-07-16 | 苏州尚善新材料科技有限公司 | Humidity-resistant and heat-resistant solar cell backsheet and manufacturing method therefor |
| CN107386540A (en) * | 2017-07-05 | 2017-11-24 | 林和国 | A kind of photovoltaic polymetal crust material |
| US10665742B2 (en) | 2014-07-04 | 2020-05-26 | Dsm Ip Assets B.V. | Co-extruded backsheet for solar cell modules |
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| CN102610679A (en) * | 2012-03-21 | 2012-07-25 | 宁波长阳科技有限公司 | Solar cell back plane and preparation method thereof |
| CN202448422U (en) * | 2012-02-10 | 2012-09-26 | 无锡中洁能源技术有限公司 | Integrated solar battery back film capable of partially replacing EVA (Ethylene-vinyl Acetate Copolymer) |
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| CN103280479A (en) * | 2013-05-23 | 2013-09-04 | 常州回天新材料有限公司 | Novel fluoride-free multilayer coextrusion solar cell back plate and preparation method thereof |
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| WO2015103872A1 (en) * | 2014-01-08 | 2015-07-16 | 苏州尚善新材料科技有限公司 | Humidity-resistant and heat-resistant solar cell backsheet and manufacturing method therefor |
| CN105934831A (en) * | 2014-01-08 | 2016-09-07 | 苏州尚善新材料科技有限公司 | Humidity-resistant and heat-resistant solar cell backsheet and manufacturing method therefor |
| CN105934831B (en) * | 2014-01-08 | 2018-02-06 | 帝斯曼尚善太阳能科技（苏州）有限公司 | The solar cell backboard and its manufacture method of wet-heat resisting |
| US10665742B2 (en) | 2014-07-04 | 2020-05-26 | Dsm Ip Assets B.V. | Co-extruded backsheet for solar cell modules |
| CN104362207A (en) * | 2014-11-14 | 2015-02-18 | 无锡中洁能源技术有限公司 | High-resistance solar panel back membrane and preparation method thereof |
| CN107386540A (en) * | 2017-07-05 | 2017-11-24 | 林和国 | A kind of photovoltaic polymetal crust material |
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Application publication date: 20130313 |