CN204506045U - A kind of PET film of three-decker and consisting of solar cell backboard - Google Patents
A kind of PET film of three-decker and consisting of solar cell backboard Download PDFInfo
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- CN204506045U CN204506045U CN201420726445.3U CN201420726445U CN204506045U CN 204506045 U CN204506045 U CN 204506045U CN 201420726445 U CN201420726445 U CN 201420726445U CN 204506045 U CN204506045 U CN 204506045U
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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 utility model discloses a kind of three-decker PET film and consisting of solar cell backboard, described film is formed with the skin and internal layer 3-layer PET film biaxial tension co-extrusion being positioned at both sides, intermediate layer by being positioned at middle intermediate layer, its thickness is thin, have that thermal conductivity is high, reflecting rate is high, resisting ageing for long time performance waits premium properties well.With the PET film of described three-decker for basic unit, basic unit side applies weather-proof coat, and side is by viscose glue oxidant layer bonding insulating thin layer composition solar cell backboard.Based on excellent heat conduction, reflective, the ageing-resistant performance of PET film, consisting of solar cell backboard compared with prior art there is better heat resistance and weatherability, and structure is simple, reprocesses easily.
Description
Technical field
The solar cell backboard that the utility model relates to a kind of polyester (PET) film and is made up of this film, relate to a kind of polyester (PET) film with three-decker in particular, and the solar cell backboard with high-weatherability and high-adhesion be made up of this film.
Background technology
Solar module is a laminated construction normally, and mainly comprise the glassy layer, EVA encapsulated layer, silicon cell, EVA encapsulated layer and the solar cell module back veneer that set gradually, wherein silicon cell is by two-layer EVA adhesive film sealed envelope.Solar cell module back veneer Main Function is electric insulation, improves the mechanical strength of solar module, prevents water vapor permeable in sealant, affect life-span and the generating efficiency of cell piece.Because solar cell module back veneer is at the outermost of solar module, require that backboard has good environment resistant erosion performance, thus the solar cell module back veneer manufactured must have good wet and heat ageing resistant, high temperature resistant, hydrolysis, decay resistance, and resist UV-irradiation ability.
In prior art, solar cell backboard is primarily of the thick fluorine-contained film of 0.020-0.040mm, polyester (PET) the film basic unit that 0.100-0.300mm is thick and the thick EVA of 0.0200-0.180mm or polyolefin film or polyamide (PA), or modified polypropene trilamellar membrane material is composited by adhesive.This backboard has following shortcoming: the thicker heat transfer efficiency of backboard is poor, heat resistance is poor, and reflecting rate is low affects cell power generation efficiency, the low too early efflorescence of this layer of material having caused battery unilateral of uv-resistance energy, and xanthochromia cracking ageing failure, difficulty reprocessed by assembly, expensive.
Summary of the invention
The utility model object overcomes the deficiencies in the prior art, provides a kind of PET coextruded film of three-decker, provide the solar cell backboard be made up of this PET film simultaneously.Described PET film thinner thickness, thermal conductivity is high, reflecting rate is high, resisting ageing for long time performance waits premium properties well, with it for basic unit, weather-proof coat is applied in its side, opposite side adheres to the solar cell backboard of one deck insulating thin layer composition by adhesive layer, its heat resistance and weatherability excellent, reprocess easily.
The technical solution of the utility model is:
A PET film for three-decker, described PET film 4 is formed with the skin 1 and internal layer 2 3-layer PET film biaxial tension co-extrusion being positioned at both sides, intermediate layer 3 by being positioned at middle intermediate layer 3; The thickness of described PET film 4 is 0.050 ~ 1.000mm, and wherein said outer 1 thickness is 0.010 ~ 0.060mm, and described intermediate layer 3 thickness is 0.010 ~ 0.980mm, and described internal layer 2 thickness is 0.010 ~ 0.060mm; Described outer 1 surface gloss is 0 ~ 100, surface reflectivity for the rate of penetrating be 30 ~ 100%; Described internal layer 2 surface gloss is 0 ~ 100, and surface reflectivity is 30 ~ 100%; Wherein measuring glossiness ray cast angle is 60 °, and the wavelength of light scope of measurement of reflectivity is at 400 ~ 1100nm.
Further, preferably, the thickness of described PET film 4 is 0.100mm ~ 0.300mm, and wherein said outer 1 thickness is 0.020mm ~ 0.050mm, and described intermediate layer 3 thickness is 0.060 ~ 0.025mm, and described internal layer 2 thickness is 0.020mm ~ 0.050mm; Described outer 1 surface gloss is 10 ~ 60, and surface reflectivity is 60 ~ 99%; Described internal layer 2 surface gloss is 10 ~ 60, and surface reflectivity is 80 ~ 99%; Wherein measuring glossiness ray cast angle is 60 °, and the wavelength of light scope of measurement of reflectivity is at 400 ~ 1100nm.
Further, described internal layer 2 contains the inorganic filler of 0 ~ 90%;
Further, in described internal layer 2, inorganic filler is selected from a kind of or several arbitrarily mixture in titanium dioxide, aluminium hydroxide, talcum powder, silica, calcium carbonate, carbon black, mica powder, barium sulfate, diatomite, ground pumice, bortz powder, pearl essence;
The utility model additionally provides the solar cell backboard of the PET film composition of above-mentioned three-decker, described backboard with the PET film 4 of described three-decker for basic unit, apply the weather-proof coat 5 of one deck in basic unit side, adhere to one deck insulating thin layer 7 at its opposite side by adhesive layer 6 and form.
Further, described weather-proof coat 5 comprises organic resin, curing agent and inorganic filler; Described adhesive layer 6 comprises adhesive and inorganic filler; Described insulating thin layer 7 comprises organic resin and inorganic filler.
Further, preferably, in described weather-proof coat 5, organic resin is selected from polytetrafluoroethylene (PTFE) fluorocarbon resin, poly-trifluoro-ethylene fluorocarbon resin, perfluorinated resin, fluoroacrylic resin, fluorine silicon resin, carbonate polyol resin, caprolactam polyol resin, dimeric dibasic acid polyol resin, end hydroxy butadiene resin, aliphatic chain polyol resin, hydrogenated bisphenol A epoxy resin, end hydroxy butadiene epoxy resin, Zhi Huan race epoxy resin, the one in dimer acid modified epoxy resin or aliphatic epoxy resin;
Further, preferably, in described weather-proof coat 5, curing agent is selected from isocyanate-based curing agent, imidazole curing agent, hydrazides curing agent, amine resin curing agent, the one in amine curing agent or melamine series curing agent;
Further, preferably, the adhesive in described adhesive layer 6 is selected from the one in polyurethane series adhesive, acrylic acid adhesive, epoxyn, organic silicon resin adhesive or polyurea adhesive;
Further, preferably, in described insulating thin layer 7, organic resin is selected from polyvinyl resin (PE), polyflon (ETPE), poly-trifluoro-ethylene resin (CTFE), polyvinylidene fluoride resin (PVDF), polyfluoroethylene resin (PVF), polyamide (PA), polycyclic olefin copolymer (COC) resin, hydrogenated polystyrene-polyethylene-polybutene-polystyrene block copolymer rubber elastomer resin (SEBS), hydrogenated polystyrene-polyethylene-polypropylene-polystyrene elastic rubbery body resin (SEPS), polyolefin elastomer resin
(POE), methyl methacrylate (PMMA) resin, methyl methacrylate and butyl acrylate blocks copolymer resin, ethylene-vinyl acetate copolymer resin (EVA), organic siliconresin, TPU (TPU);
Further, preferably, the inorganic filler in described weather-proof coat 5, adhesive layer 6 and insulating thin layer 7 is selected from a kind of or several arbitrarily mixture in titanium dioxide, alundum (Al2O3), aluminium hydroxide, talcum powder, silica, calcium carbonate, carbon black, mica powder, barium sulfate, diatomite, ground pumice, bortz powder, pearl essence respectively.
Further, in described weather-proof coat 5, inorganic filler mass content is X, wherein 0 < X≤90%;
Described adhesive layer 6 inorganic filler content is Y, wherein 0≤Y≤90%;
In described insulating thin layer 7, inorganic filler content is Z, wherein 0 < Z≤90%.
Further, preferably, in described insulating thin layer 7, inorganic filler content is X, wherein
0 < X≤60%; In described adhesive layer 6, inorganic filler mass content is Y, wherein 0≤Y≤50%.
Further, described weather-proof coat 5 thickness is 0.001 ~ 0.030mm; Described adhesive layer 6 thickness is 0.001 ~ 0.05mm; Described insulating thin layer 7 thickness is 0.005 ~ 0.945mm.
Further, preferably, described weather-proof coat 5 thickness is 0.001 ~ 0.007mm; Described adhesive layer 6 thickness is 0.003 ~ 0.020mm; Described insulating thin layer 7 thickness is 0.010 ~ 0.050mm.
The utility model has the advantages that: the utility model PET polyester film thickness is thin, and have thermal conductivity high, reflecting rate is high, resisting ageing for long time performance waits premium properties well; The solar cell backboard be made up of itself and weather-proof coat and insulating thin layer effectively can reduce the thickness of backboard, improves the heat transfer efficiency of backboard and light reflectivity, thus make backboard heat resistance and weatherability excellent because structure is simple, it is more easy to reprocess.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is the structural representation of the PET film of the utility model three-decker;
Fig. 2 is solar cell backboard structural representation of the present utility model;
Fig. 3 is the solar module structural representation that solar cell backboard of the present utility model is formed;
Wherein 1-is outer, 2-internal layer, 3-intermediate layer, 4-PET film, the weather-proof coat of 5-, 6-adhesive layer, 7-insulating thin layer, and 8,11-EVA encapsulated layer, 9-cell piece, 10-backboard, 12-glass.
Detailed description of the invention
Embodiment:
Embodiment 1:
Be illustrated in figure 1 the PET film structural representation of three-decker.The PET film 4 of described three-decker comprises the skin 1 and the internal layer 2 3-layer PET film biaxial tension co-extrusion that are positioned at middle intermediate layer 3 and are positioned at both sides, intermediate layer, and disposable continuous seepage is made.The thickness of PET film 4 is 0.100mm, and its ectomesoderm 1 thickness is 0.020mm, and intermediate layer 3 thickness is 0.060mm, and internal layer 2 thickness is 0.020mm; Outer 1 surface gloss is 60, and internal layer 2 surface gloss is 60, wherein measures glossiness ray cast angle and is 60 ° and meets GB/T9754-2007 and international standard ISO2813:1994.
Described outer 1 can block 280 ~ 400nm ultraviolet more than 99%, after 280 ~ 400nm ultraviolet 90KWh/ ㎡ irradiates, and yellowness index ▽ b<3; Hydrolysis, PCT tests 121 DEG C, 100% humidity, and after 72 hours, residue elongation at break is more than 10%.The slin emissivity that described outer 1 integration ball draws is 60%, and the wavelength of light scope of measurement of reflectivity is at 400 ~ 1100nm.
Described internal layer 2 also contains the inorganic filler of 90%, and described inorganic filler is titanium dioxide; Described internal layer 2 is under wavelength of light 400-1100nm, and integration ball draws surface reflectivity thing 80%; Described internal layer 2 can block 280-400nm ultraviolet more than 99%, after 280-400nm ultraviolet 90KWh/ ㎡ irradiates, and yellowness index ▽ b<3; Hydrolysis, PCT tests 121 DEG C, 100% humidity, and after 48 hours, residue elongation at break is more than 10%.
The PET film 4 of above-mentioned three-decker is through PCT experiment, and 121 DEG C, 100% humidity, after 48 hours, outward appearance is without exception, bubble-free, cracking, variable color etc., yellowness index ▽ b<3.
The PET film 4 of above-mentioned three-decker is adopted to prepare solar cell backboard.With the PET film 4 of described three-decker for basic unit, at the weather-proof coat 5 that internal layer 2 side coating thickness is 0.007mm, namely the insulating thin layer 7 being 0.050mm by the bonding a layer thickness of adhesive layer 6 in outer 1 side forms solar cell backboard 10, be illustrated in figure 2 its structural representation, wherein adhesive layer 6 thickness is 0.003mm.
Above-mentioned weather-proof coat 5 comprises organic resin, curing agent and inorganic filler, in the present embodiment, organic resin is polytetrafluoroethylene (PTFE) fluorocarbon resin (it also can change poly-trifluoro-ethylene fluorocarbon resin into), curing agent is isocyanate-based curing agent, organic filler is titanium dioxide and mica powder mixture, and wherein inorganic filler accounts for 90% of weather-proof coat quality.
In above-mentioned adhesive layer 6, adhesive is polyurethane series adhesive, also comprises the alundum (Al2O3) inorganic filler accounting for its quality 90% in viscose glue oxidant layer.
Above-mentioned insulating thin layer 7 comprises organic resin and inorganic filler, and in the present embodiment, organic resin is polyvinyl resin (PE), and organic filler is the mixture of aluminium hydroxide and talcum powder composition, and content accounts for 60% of insulating thin layer gross mass.
Structural representation after the assembling of above-mentioned solar cell backboard 10 as shown in Figure 3.The side of backboard 10 insulating thin layer 7 is outside, the side and the EVA encapsulated layer 8 that apply weather-proof coat 5 bond, cell piece 9 is arranged between two EVA encapsulated layers 8 and 11, and encapsulated layer 11 and outermost glassy layer 12 have bondd the installation of whole solar module.
In the present embodiment, to have reflecting rate high for solar cell backboard 10, and the reflectivity that integration ball draws is 92%; Thermal resistance 7.5m
2k/W, excellent weather resisteant battery unilateral (UV-90kwh, ▽ b=0.4), air surface ▽ b=0.3, it is good to reprocess performance, noresidue.High heat resistance: RTI=120 DEG C, by contrast, the reflecting rate of traditional solar cell backboard only can reach 78%, the higher 12K/m of thermal resistance
2k/W, weatherability poor (UV-90kwh, ▽ b=4), reprocesses difficulty, has residual, and polyolefm film layer remains on encapsulation EVA.Heat-resisting lower, RTI=70 DEG C.
Embodiment 2:
In this example, the PET film structure of three-decker, preparation method are with embodiment 1.Wherein the thickness of PET film 4 is 0.300mm, and its ectomesoderm 1 thickness is 0.050mm, and intermediate layer 3 thickness is 0.200mm, and internal layer 2 thickness is 0.050mm; Outer 1 surface gloss is 100, and internal layer 2 surface gloss is 100.Internal layer 2 is not containing inorganic filler.Described ectonexine all can block 280 ~ 400nm ultraviolet more than 99%, after 280 ~ 400nm ultraviolet 90KWh/ ㎡ irradiates, and yellowness index ▽ b<3; Hydrolysis, PCT tests 121 DEG C, 100% humidity, and after 72 hours, residue elongation at break is more than 10%.Integration ball show that ectonexine surface reflectivity is 100%.The PET film 4 of above-mentioned three-decker is through PCT experiment, and 121 DEG C, 100% humidity, after 48 hours, outward appearance is without exception, bubble-free, cracking, variable color etc., yellowness index ▽ b<3.
The solar cell backboard structure be made up of the PET film of above-mentioned three-decker in this example and the rear structure of backboard assembling are with embodiment 1.
Wherein, the present embodiment weather-proof coat 5 organic resin is perfluorinated resin, and curing agent is imidazole curing agent, and organic filler is silica, and wherein inorganic filler accounts for 0.5% of weather-proof coat 5 quality, and weather-proof coat 5 thickness is 0.001mm.
In above-mentioned adhesive layer 6, adhesive is acrylic acid adhesive, and inorganic filler content is 0, and adhesive layer 6 thickness is 0.001mm.
Above-mentioned insulating thin layer 7 organic resin is polyflon (ETPE) (in this example, polyflon also can change other polyfluoroethylene resin such as poly-trifluoro-ethylene resin, polyvinylidene fluoride resin, polyfluoroethylene resin into), organic filler is carbon black and barium sulfate mixture, content accounts for 90% of insulating thin layer 7 gross mass, and insulating thin layer 7 thickness is 0.945mm.
In the present embodiment, to have reflecting rate high for solar cell backboard 10, and the reflectivity that integration ball draws is 90%; Thermal resistance 7.8m
2k/W, excellent weather resisteant battery unilateral (UV-90kwh, ▽ b=0.45), air surface ▽ b=0.3, it is good to reprocess performance, noresidue, high heat resistance: RTI=115 DEG C.
Embodiment 3:
In this example, the PET film structure of three-decker, preparation method are with embodiment 1.Wherein the thickness of PET film 4 is 1.000mm, and its ectomesoderm 1 thickness is 0.010mm, and intermediate layer 3 thickness is 0.980mm, and internal layer 2 thickness is 0.010mm, and wherein internal layer 2 is containing calcium carbonate, carbon black mixing inorganic filler, containing being 10%; Outer 1 surface gloss is 10, and internal layer 2 surface gloss is 10.Integration ball show that ectonexine surface reflectivity is 30%.The PET film 4 of above-mentioned three-decker is through PCT experiment, and 121 DEG C, 100% humidity, after 48 hours, outward appearance is without exception, bubble-free, cracking, variable color etc., yellowness index ▽ b<3.
The solar cell backboard structure be made up of the PET film of above-mentioned three-decker in this example and the rear structure of backboard assembling are with embodiment 1.
Wherein, weather-proof coat 5 organic resin is fluoroacrylic resin, and curing agent is hydrazides curing agent, and organic filler is diatomite, and wherein inorganic filler accounts for 50% of weather-proof coat 5 quality, and weather-proof coat 5 thickness is 0.030mm.
In above-mentioned adhesive layer 6, adhesive is epoxyn, also comprises the calcium carbonate inorganic filler accounting for its quality 50% in viscose glue oxidant layer 6, and adhesive layer 6 thickness is 0.050mm.
Above-mentioned insulating thin layer 7 organic resin is polyamide (PA), and organic filler is ground pumice, and content accounts for 0.5% of insulating thin layer 7 gross mass, and insulating thin layer 7 thickness is 0.010mm.
In the present embodiment, to have reflecting rate high for solar cell backboard 10, and the reflectivity that integration ball draws is 88%; Thermal resistance 8.0m
2k/W, excellent weather resisteant battery unilateral (UV-90kwh, ▽ b=0.4), air surface ▽ b=0.3, it is good to reprocess performance, noresidue, high heat resistance: RTI=110 DEG C.
Embodiment 4:
In this example, the PET film structure of three-decker, preparation method are with embodiment 1.Wherein the thickness of PET film 4 is 0.130mm, its ectomesoderm 1 thickness is 0.060mm, intermediate layer 3 thickness is 0.010mm, internal layer 2 thickness is 0.060mm, wherein internal layer 2 is containing inorganic filler aluminium hydroxide, talcum powder mixing inorganic filler, content is 1%, and outer 1 surface gloss is 95, and internal layer 2 surface gloss is 95.Integration ball show that ectonexine surface reflectivity is 99%.The PET film 4 of above-mentioned three-decker is through PCT experiment, and 121 DEG C, 100% humidity, after 48 hours, outward appearance is without exception, bubble-free, cracking, variable color etc., yellowness index ▽ b<3.
The solar cell backboard structure be made up of the PET film of above-mentioned three-decker in this example and the rear structure of backboard assembling are with embodiment 1.
Wherein, weather-proof coat 5 organic resin is fluorine silicon resin, and curing agent is amine resin curing agent, and organic filler is bortz powder, and wherein inorganic filler accounts for 1% of weather-proof coat 5 quality, and weather-proof coat 5 thickness is 0.020mm.
In above-mentioned adhesive layer 6, adhesive is organic silicon resin adhesive, and also comprise in viscose glue oxidant layer 6 and account for its quality 10% inorganic filler pearl essence, adhesive layer 6 thickness is 0.020mm.
Above-mentioned insulating thin layer 7 organic resin is polycyclic olefin copolymer (COC) resin, and organic filler is alundum (Al2O3), and content accounts for 10% of insulating thin layer 7 gross mass, and insulating thin layer 7 thickness is 0.005mm.
In the present embodiment, to have reflecting rate high for solar cell backboard 10, and the reflectivity that integration ball draws is 90%; Thermal resistance 7.9m
2k/W, excellent weather resisteant battery unilateral (UV-90kwh, ▽ b=0.4), air surface ▽ b=0.3, it is good to reprocess performance, noresidue, high heat resistance: RTI=115 DEG C.
Embodiment 5:
In this example, the PET film preparation method of three-decker and structure are with embodiment 1.Consisting of solar cell backboard structure and backboard assembling after structure with embodiment 1.
Wherein in three-decker PET film 4 internal layer 2, inorganic filler is silica and diatomite mixture.
In backboard 10, weather-proof coat 5 organic resin is carbonate polyol resin (in this example, carbonate polyol resin can also change other polyol resins such as caprolactam polyol resin, dimeric dibasic acid polyol resin or aliphatic chain polyol resin into), and curing agent is amine curing agent.
In adhesive layer 6, adhesive is for there being polyurea adhesive.
Above-mentioned insulating thin layer 7 organic resin is hydrogenated polystyrene-polyethylene-polybutene-polystyrene block copolymer rubber elastomer resin (SEBS) (in this example, SEBS can also change hydrogenated polystyrene-polyethylene-polypropylene-polystyrene elastic rubbery body resin (SEPS) into).
In the present embodiment, to have reflecting rate high for solar cell backboard 10, and the reflectivity that integration ball draws is 92%; Thermal resistance 7.5m
2k/W, excellent weather resisteant battery unilateral (UV-90kwh, ▽ b=0.4), air surface ▽ b=0.3, it is good to reprocess performance, noresidue, high heat resistance: RTI=120 DEG C.
Embodiment 6:
In this example, the PET film preparation method of three-decker and structure are with embodiment 1.Consisting of solar cell backboard structure and backboard assembling after structure with embodiment 1.
Wherein in three-decker PET film 4 internal layer 2, inorganic filler is mica powder and barium sulfate mixture.
In backboard 10, weather-proof coat 5 organic resin is end hydroxy butadiene resin, and curing agent is melamine series curing agent.
Above-mentioned insulating thin layer 7 organic resin is polyolefin elastomer resin (POE).
This routine dorsulum 10 is assembled rear its reflecting rate, thermal resistance, weatherability and is reprocessed performance with embodiment 1.
Embodiment 7:
In this example, the PET film preparation method of three-decker and structure are with embodiment 1.Consisting of solar cell backboard structure and backboard assembling after structure with embodiment 1.
Wherein in three-decker PET film 4 internal layer 2, inorganic filler is bortz powder.
In backboard 10, weather-proof coat 5 organic resin is hydrogenated bisphenol A epoxy resin.
Above-mentioned insulating thin layer 7 organic resin is methyl methacrylate (PMMA) resin.
This routine dorsulum 10 is assembled rear its reflecting rate, thermal resistance, weatherability and is reprocessed performance with embodiment 1.
Embodiment 8:
In this example, the PET film preparation method of three-decker and structure are with embodiment 1.Consisting of solar cell backboard structure and backboard assembling after structure with embodiment 1.
Wherein in three-decker PET film 4 internal layer 2, inorganic filler is pearl essence and ground pumice.
In backboard 10, weather-proof coat 5 organic resin is end hydroxy butadiene epoxy resin.
Above-mentioned insulating thin layer 7 organic resin is methyl methacrylate and butyl acrylate blocks copolymer resin.
This routine dorsulum 10 is assembled rear its reflecting rate, thermal resistance, weatherability and is reprocessed performance with embodiment 1.
Embodiment 9:
In this example, the PET film preparation method of three-decker and structure are with embodiment 1.Consisting of solar cell backboard structure and backboard assembling after structure with embodiment 1.
Wherein, in backboard 10, weather-proof coat 5 organic resin is Zhi Huan race epoxy resin.
Insulating thin layer 7 organic resin is ethylene-vinyl acetate copolymer resin.
This routine dorsulum 10 is assembled rear its reflecting rate, thermal resistance, weatherability and is reprocessed performance with embodiment 1.
Embodiment 10:
In this example, the PET film preparation method of three-decker and structure are with embodiment 1.Consisting of solar cell backboard structure and backboard assembling after structure with embodiment 1.
In its dorsulum 10, weather-proof coat 5 organic resin is dimer acid modified epoxy resin; Insulating thin layer 7 organic resin is organic siliconresin.
This routine dorsulum 10 is assembled rear its reflecting rate, thermal resistance, weatherability and is reprocessed performance with embodiment 1.
Embodiment 11:
In this example, the PET film preparation method of three-decker and structure are with embodiment 1.Consisting of solar cell backboard structure and backboard assembling after structure with embodiment 1.
In its dorsulum 10, weather-proof coat 5 organic resin is aliphatic epoxy resin; Insulating thin layer 7 organic resin is TPU (TPU).
This routine dorsulum 10 is assembled rear its reflecting rate, thermal resistance, weatherability and is reprocessed performance with embodiment 1.
Can be found out by above-described embodiment, the PET film of the two-layer structure in the present invention has that rate of heat dissipation is high, reflecting rate is high, and water blocking rate is high, and resisting ageing for long time performance waits premium properties well.With the solar cell backboard that it forms for basic unit, compared with prior art there is better heat resistance and weatherability, and structure is simple, reprocesses easily.
Certain above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All modifications done according to the Spirit Essence of the utility model main technical schemes, all should be encompassed within protection domain of the present utility model.
Claims (5)
1. the PET film of a three-decker, it is characterized in that, described PET film (4) is by being positioned at middle intermediate layer (3) and being positioned at the skin (1) of intermediate layer (3) both sides and internal layer (2) 3-layer PET film biaxial tension co-extrusion is formed; The thickness of described PET film (4) is 0.050 ~ 1.000mm, wherein said skin (1) thickness is 0.010 ~ 0.060mm, described intermediate layer (3) thickness is 0.010 ~ 0.980mm, and described internal layer (2) thickness is 0.010 ~ 0.060mm; Described skin (1) surface gloss is 0 ~ 100, surface reflectivity for the rate of penetrating be 30 ~ 100%; Described internal layer (2) surface gloss is 0 ~ 100, and surface reflectivity is 30 ~ 100%; Wherein measuring glossiness ray cast angle is 60 °, and the wavelength of light scope of measurement of reflectivity is at 400 ~ 1100nm.
2. the PET film of a kind of three-decker according to claim 1, it is characterized in that, the thickness of described PET film (4) is 0.100mm ~ 0.300mm, wherein said skin (1) thickness is 0.020mm ~ 0.050mm, described intermediate layer (3) thickness is 0.060 ~ 0.025mm, and described internal layer (2) thickness is 0.020mm ~ 0.050mm; Described skin (1) surface gloss is 10 ~ 60, and surface reflectivity is 60 ~ 99%; Described internal layer (2) surface gloss is 10 ~ 60, and surface reflectivity is 80 ~ 99%; Wherein measuring glossiness ray cast angle is 60 °, and the wavelength of light scope of measurement of reflectivity is at 400 ~ 1100nm.
3. the solar cell backboard of the PET film composition of a kind of three-decker as claimed in claim 1, it is characterized in that, described backboard with the PET film of described three-decker (4) for basic unit, apply the weather-proof coat of one deck (5) in basic unit side, adhere to one deck insulating thin layer (7) composition at its opposite side by adhesive layer (6).
4. the solar cell backboard of the PET film composition of a kind of three-decker according to claim 3, it is characterized in that, described weather-proof coat (5) thickness is 0.001 ~ 0.030mm; Described adhesive layer (6) thickness is 0.001 ~ 0.05mm; Described insulating thin layer (7) thickness is 0.005 ~ 0.945mm.
5. the solar cell backboard of the PET film composition of a kind of three-decker according to claim 3, it is characterized in that, described weather-proof coat (5) thickness is 0.001 ~ 0.007mm; Described adhesive layer (6) thickness is 0.003 ~ 0.020mm; Described insulating thin layer (7) thickness is 0.010 ~ 0.050mm.
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| CN201420726445.3U CN204506045U (en) | 2014-11-27 | 2014-11-27 | A kind of PET film of three-decker and consisting of solar cell backboard |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104512082A (en) * | 2014-11-27 | 2015-04-15 | 苏州赛伍应用技术有限公司 | Three-layer structural PET (polyethylene terephthalate) film and solar battery back plate prepared from three-layer structural PET film |
| CN117048164A (en) * | 2023-10-11 | 2023-11-14 | 畅的新材料科技（上海）有限公司 | High-weather-resistance photovoltaic backboard base film and preparation method thereof |
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2014
- 2014-11-27 CN CN201420726445.3U patent/CN204506045U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104512082A (en) * | 2014-11-27 | 2015-04-15 | 苏州赛伍应用技术有限公司 | Three-layer structural PET (polyethylene terephthalate) film and solar battery back plate prepared from three-layer structural PET film |
| CN117048164A (en) * | 2023-10-11 | 2023-11-14 | 畅的新材料科技（上海）有限公司 | High-weather-resistance photovoltaic backboard base film and preparation method thereof |
| CN117048164B (en) * | 2023-10-11 | 2024-01-26 | 畅的新材料科技（上海）有限公司 | High-weather-resistance photovoltaic backboard base film and preparation method thereof |
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