CN104512081A - Two-layer structural PET (polyethylene terephthalate) film and solar battery back plate prepared from two-layer structural PET film - Google Patents
Two-layer structural PET (polyethylene terephthalate) film and solar battery back plate prepared from two-layer structural PET film Download PDFInfo
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- CN104512081A CN104512081A CN201410697488.8A CN201410697488A CN104512081A CN 104512081 A CN104512081 A CN 104512081A CN 201410697488 A CN201410697488 A CN 201410697488A CN 104512081 A CN104512081 A CN 104512081A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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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
- Y02E10/52—PV systems with concentrators
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Abstract
The invention discloses a two-layer structural PET (polyethylene terephthalate) film and a solar battery back plate prepared from the two-layer structural PET film, and the two-layer structural PET film is formed by two-way stretching and co-extrusion of an inner layer PET film and an outer layer PET film. The two-layer structural PET film has high heat dissipation rate, high reflection rate, high water resistance rate, good long-term aging resistance and other good performances. The solar battery back plate can be prepared by using the two-layer structural PET film as a substance, and coating one side of the two-layer structural PET film with a weather-proof coating layer, the two-layer structure-based PET film has good performance, compared with the prior art, the solar battery back plate has better heat resistance and weather resistance, and has the advantages of being simple in structure and easy to repair.
Description
Technical field
The present invention relates to a kind of two-layer structure PET polyester film and consisting of high-fire resistance and Weatherproof solar battery back-sheet, relating to a kind of PET film by this two-layer structure is specifically basic unit, and side applies the high-weatherability of weather-proof coat formation and the solar cell backboard with EVA encapsulating film height Cohesion reliability.
Background technology
A sun energy battery component normally laminated construction, 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 0.010-0.040mm, polyester (PET) the film basic unit that 0.100-0.320mm is thick and the thick EVA of 0.0200-0.180mm or polyolefin film or polyamide (PA), or the dielectric film that forms of modified polypropene altogether trilamellar membrane material be composited by adhesive.This backboard has following shortcoming: the thicker radiating 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 present invention seeks to overcome the deficiencies in the prior art, there is provided that a kind of rate of heat dissipation is high, reflecting rate is high, the two-layer structure PET coextruded film that resisting ageing for long time performance is good, and be basic unit by this PET film 3, the solar cell backboard 9 of weather-proof coat 4 composition is applied in its side.This backboard 9 has that rate of heat dissipation is high, reflecting rate is high, water blocking rate high (water vapor transmittance is low), the feature that assembly is reprocessed easily, resisting ageing for long time performance is good.
Technical scheme of the present invention is:
A kind of two-layer structure PET film, described PET film 3 is formed by outer 1 and the two-layer PET film co-extrusion of internal layer 2; The thickness of described PET film 3 is 0.050mm ~ 1.000mm, and its ectomesoderm 1 thickness is 0.010mm ~ 0.120mm, and internal layer 2 thickness is 0.010mm ~ 0.880mm; Described outer 1 surface gloss is 0 ~ 100, and wherein measuring glossiness ray cast angle is 60 °; Described internal layer 2 surface gloss is 1 ~ 99, and wherein measuring glossiness ray cast angle is 60 °; Described internal layer 2 surface reflectivity is 30 ~ 99%, and wherein the wavelength of light scope of measurement of reflectivity is at 400 ~ 1100nm.
Further, preferably, the thickness of described PET film 3 is 0.250mm-0.320mm, and its ectomesoderm 1 thickness is 0.020mm-0.060mm, and internal layer 2 thickness is 0.030mm-0.300mm; Described outer 1 lustrous surface is 10 ~ 60, and wherein measuring glossiness ray cast angle is 60 °; Described internal layer 2 surface gloss is 10 ~ 60, and wherein measuring glossiness ray cast angle is 60 °; Described internal layer 2 surface reflectivity is 60 ~ 99%, and wherein the wavelength of light scope of measurement of reflectivity is at 400 ~ 1100nm.
Present invention also offers a kind of solar cell backboard of PET film composition of above-mentioned two-layer structure, described backboard 9 is with the PET film 3 of described two-layer structure for basic unit, and in described basic unit, internal layer 2 side applies the weather-proof coat 4 of one deck and forms.
Further, described weather-proof coat 4 comprises organic resin, curing agent and inorganic filler.
Further, preferably, in described weather-proof coat 4, organic resin is selected from polytetrafluoroethylene (PTFE) fluorocarbon resin, poly-difluoroethylene fluorocarbon resin, perfluorinated resin, fluoroacrylic resin, fluorine silicon resin, hydroxy acryl acid resin, carbonate polyol resin, caprolactam polyol resin, dimeric dibasic acid polyol resin, end hydroxy butadiene resin, hydrogenated bisphenol A epoxy resin, end hydroxy butadiene epoxy resin, Zhi Huan race epoxy resin, the one in dimer acid modified epoxy resin and aliphatic epoxy resin;
Further, preferably, in described weather-proof coat 4, 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 and cyanamid dimerization system curing agent;
Further, preferably, in described weather-proof coat 4, inorganic filler to be selected from titanium dioxide, titanium dioxide two aluminium, aluminium hydroxide, talcum powder, silica, calcium carbonate, carbon black, mica powder, barium sulfate, diatomite, ground pumice, bortz powder one or both and above mixture.
Further, in described weather-proof coat 4, shared by inorganic filler, mass ratio is X, wherein 0 < X≤90%.
Further, preferably, in described weather-proof coat 4, shared by inorganic filler, mass ratio is X, wherein
10％≤X≤70％。
Further, preferably, the thickness of described weather-proof insulating barrier 4 is 0.001mm ~ 0.030mm.
Further, preferably, described weather-proof insulating barrier 4 thickness is 0.001mm-0.007mm.
Advantage of the present invention is: two-layer structure PET polyester film thickness of the present invention is thin, and have rate of heat dissipation high, reflecting rate is high, and water blocking rate is high, and resisting ageing for long time performance waits premium properties well; The solar cell backboard be made up of itself and weather-proof coat 4 reduces the thickness of backboard, and the heat resistance and the weatherability that effectively improve backboard are excellent, and structure is simple, easily reprocesses.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the structural representation of two-layer structure PET film of the present invention;
Fig. 2 is solar cell backboard structural representation of the present invention;
Fig. 3 is the solar module structural representation that solar cell backboard of the present invention is formed;
Wherein 1-is outer, 2-internal layer, 3-PET film, the weather-proof coat of 4-, and 5,7-EVA encapsulated layer, 6-cell piece, 8-glassy layer, 9-backboard.
Detailed description of the invention
Embodiment 1:
The solar cell backboard that the invention provides a kind of two-layer structure PET film and be made up of this PET film.
Be illustrated in figure 1 the PET film structural representation of two-layer structure, described PET film 3 comprises outer 1 and the two-layer PET film biaxial tension co-extrusion formation of internal layer 2; The thickness of PET film 3 is 0.320mm, and its ectomesoderm 1 thickness is 0.020mm, and internal layer 2 thickness is 0.300mm.The surface gloss of outer 1 is 99, and described internal layer 2 surface gloss is 99, and wherein measuring glossiness ray cast angle is 60 °, meets standard GB/T/T9754-2007 and international standard ISO2813:1994; Internal layer 2 integration ball show that surface reflectivity is 99%, and wherein the wavelength of light scope of measurement of reflectivity is at 400 ~ 1100nm;
The PET film 3 of above-mentioned two-layer structure, outer 1 can block 220-400nm ultraviolet more than 99%, at 220 ~ 400nm ultraviolet 90KWh/m
2after irradiation, yellowness index ▽ b<3; Hydrolysis, PCT tests 121 DEG C, 100% humidity, after 60 hours, remains elongation at break more than 10%,
Internal layer 2 does not block ultraviolet, hydrolysis, and PCT tests 121 DEG C, 100% humidity, and after 36 hours, the independent film excess elongation at break of inside and outside layer is all more than 10%; The PET film 3 of described two-layer structure tests 121 DEG C through PCT, 100% humidity, and after 60 hours, outward appearance is without exception, bubble-free, cracking, variable color, yellowness index ▽ b<3.
The solar cell backboard be made up of above-mentioned double-layer structure PET film, as shown in Figure 2, the PET film 3 of two-layer structure is as basic unit, and in described basic unit, internal layer 2 side applies the weather-proof coat 4 of one deck and namely forms backboard 9 for its structure.
Above-mentioned weather-proof coat 4 comprises organic resin, curing agent and inorganic filler.In this example, organic resin is that (in this example, polytetrafluoroethylene (PTFE) fluorocarbon resin can also change the fluorine resin of other types into as poly-difluoroethylene fluorocarbon resin for polytetrafluoroethylene (PTFE) fluorocarbon resin in hydroxyl fluororesin, perfluorinated resin, fluoroacrylic resin, fluorine silicon resin), curing agent is isocyanate-based curing agent, and inorganic filler is titanium dioxide (TiO
2) and barium sulfate (BaSO
4) mixture, in wherein said weather-proof coat, shared by inorganic filler, mass ratio is 70%.The thickness of weather-proof coat 4 is 0.007mm.
Structural representation after above-mentioned solar cell backboard 9 assembling as shown in Figure 3.In backboard 9, weather-proof coat 4 side and EVA encapsulated layer 5 bond, and cell piece 6 is arranged between two EVA encapsulated layers 5 and 7, and encapsulated layer 7 and outermost glassy layer 8 have bondd the installation of whole solar module.
In the present embodiment, solar cell backboard 9 has the reflecting rate up to 93%, thermal resistance 6.9m
2k/W, excellent weather resisteant (UV-90kwh, ▽ b=0.52), high heat resistance: RTI=122 DEG C, it is good to reprocess performance, noresidue; By contrast, the reflecting rate of traditional solar cell backboard only can reach 80%, the higher 13K/m of thermal resistance
2k/W, weatherability poor (UV-90kwh, ▽ b=4.9), heat-resisting lower, RTI=70 DEG C, reprocesses difficulty, has residual, and polyolefm film layer remains on encapsulation EVA.
Embodiment 2:
A kind of two-layer structure PET film and the solar cell backboard be made up of this PET film.
Described PET film 3 comprises outer 1 and the two-layer PET film biaxial tension co-extrusion formation of internal layer 2, and block sub-ultraviolet performance for improving ectonexine further, skin 1 and internal layer 2 with the addition of high index of refraction inorganic filler TiO
2, PET film 3 thickness is 0.260mm, and the thickness of outer 1 is 0.060mm, and the thickness of internal layer 2 is 0.200mm.The surface gloss of outer 1 is 60, and the surface gloss of internal layer 2 is 60, and wherein measuring glossiness ray cast angle is 60 °, meets standard GB/T/T9754-2007 and international standard ISO2813:1994; Internal layer 2 integration ball show that surface reflectivity is 90%, wherein the wavelength of light scope 400 ~ 1100nm of measurement of reflectivity.
Two-layer structure PET film 3 in this example, wherein independent ectonexine all can block 220-400nm ultraviolet more than 99%, at 220 ~ 400nm ultraviolet 90KWh/m
2after irradiation, yellowness index ▽ b<3; Hydrolysis, PCT tests 121 DEG C, 100% humidity, and after 60 hours, residue elongation at break is more than 10%; The PET film 3 of described two-layer structure tests 121 DEG C through PCT, 100% humidity, and after 60 hours, outward appearance is without exception, bubble-free, cracking, variable color, yellowness index ▽ b<3.
The solar cell backboard 9 that in this example, two-layer structure PET film 3 forms and backboard 9 assemble after structure with embodiment 1, the PET film 3 of two-layer structure is as basic unit, and in described basic unit, internal layer 2 side applies the weather-proof coat 4 of one deck and namely forms backboard 9.Wherein in this example, in weather-proof coat 4, organic resin is hydroxy acryl acid resin, curing agent is imidazole curing agent, inorganic filler is silica, diatomite and titanium dioxide two aluminium mixture, in wherein said weather-proof coat, shared by inorganic filler, mass ratio is 50%, and the thickness of weather-proof coat 4 is 0.015mm.
In the present embodiment, solar cell backboard 9 has the reflecting rate up to 90%, thermal resistance 7.1m
2k/W, excellent weather resisteant (UV-90kwh, ▽ b=0.50), high heat resistance: RTI=120 DEG C, it is good to reprocess performance, noresidue; By contrast, the reflecting rate of traditional solar cell backboard only can reach 80%, the higher 13K/m of thermal resistance
2k/W, weatherability poor (UV-90kwh, ▽ b=4.9), heat-resisting lower, RTI=70 DEG C, reprocesses difficulty, has residual, and polyolefm film layer remains on encapsulation EVA.
Embodiment 3:
A kind of two-layer structure PET film and the solar cell backboard be made up of this PET film.
Two-layer structure PET film 3 preparation method and structure in this example, and the solar cell backboard 9 be made up of this film, the structure after backboard 9 assembling is with above-described embodiment 1.
Wherein block ultraviolet performance for improving outer 1, outer 1 adds high index of refraction inorganic filler TiO
2.PET film 3 thickness is 0.050mm, and the thickness of outer 1 is 0.040mm, and the thickness of internal layer 2 is 0.010mm.The surface gloss of outer 1 is 10, and the surface gloss of internal layer 2 is 90, and wherein measuring glossiness ray cast angle is 60 °, meets standard GB/T/T9754-2007 and international standard ISO2813:1994; Internal layer 2 integration ball show that surface reflectivity is 90%, wherein the wavelength of light scope 400 ~ 1100nm of measurement of reflectivity.
Above-mentioned two-layer structure PET film 3, outer 1 can block 220-400nm ultraviolet more than 99%, at 220 ~ 400nm ultraviolet 90KWh/m
2after irradiation, yellowness index ▽ b<3; Hydrolysis, PCT tests 121 DEG C, 100% humidity, after 60 hours, residue elongation at break is more than 10%, and internal layer 2 does not block ultraviolet, hydrolysis, and PCT tests 121 DEG C, 100% humidity, after 36 hours, the independent film excess elongation at break of inside and outside layer is all more than 10%; The PET film 3 of described two-layer structure tests 121 DEG C through PCT, 100% humidity, and after 60 hours, outward appearance is without exception, bubble-free, cracking, variable color, yellowness index ▽ b<3.
Consisting of solar cell backboard 9, wherein in weather-proof coat, in weather-proof coat 4, organic resin is that (in this example, carbonate polyol resin also can change other class polyol resins into as caprolactam polyol resin to carbonate polyol resin, dimeric dibasic acid polyol resin), curing agent is hydrazides curing agent, inorganic filler is aluminium hydroxide, mica powder and a small amount of bortz powder mixture, and in wherein said weather-proof coat, shared by inorganic filler, mass ratio is 90%.The thickness of weather-proof coat 4 is 0.03mm.
After above-mentioned backboard 9 is assembled in this example, there is the reflecting rate up to 90%, thermal resistance 7.3m
2k/W, excellent weather resisteant (UV-90kwh, ▽ b=0.55), high heat resistance: RTI=110 DEG C, it is good to reprocess performance, noresidue; By contrast, the reflecting rate of traditional solar cell backboard only can reach 80%, the higher 13K/m of thermal resistance
2k/W, weatherability poor (UV-90kwh, ▽ b=4.9), heat-resisting lower, RTI=70 DEG C, reprocesses difficulty, has residual, and polyolefm film layer remains on encapsulation EVA.
Embodiment 4:
Two-layer structure PET film and the solar cell backboard be made up of this PET film, PET film 3 preparation method of two-layer structure and structure in this example, and the solar cell backboard 9 be made up of this film, backboard 9 assemble after structure with above-described embodiment 1.
Wherein, PET film 3 thickness is 1.000mm, and the thickness of outer 1 is 0.120mm, and the thickness of internal layer 2 is 0.880mm.The surface gloss of outer 1 is 60, and the surface gloss of internal layer 2 is 10, and wherein measuring glossiness ray cast angle is 60 °, meets standard GB/T/T9754-2007 and international standard ISO2813:1994; Internal layer 2 integration ball show that surface reflectivity is 30%, wherein the wavelength of light scope 400 ~ 1100nm of measurement of reflectivity.
The solar cell backboard 9 of above-mentioned two-layer structure PET film composition, in its weather-proof coat 4, organic resin is that (in this example, hydrogenated bisphenol A epoxy resin also can change other based epoxy resins into as end hydroxy butadiene epoxy resin to hydrogenated bisphenol A epoxy resin, Zhi Huan race epoxy resin, dimer acid modified epoxy resin or aliphatic epoxy resin), curing agent is amine resin curing agent, inorganic filler is talcum powder and black stock, and in wherein said weather-proof coat, shared by inorganic filler, mass ratio is 10%.The thickness of weather-proof coat 4 is 0.001mm.
After above-mentioned backboard 9 is assembled in this example, there is the reflecting rate up to 88%, thermal resistance 8.0m
2k/W, excellent weather resisteant (UV-90kwh, ▽ b=0.50), high heat resistance: RTI=110 DEG C, it is good to reprocess performance, noresidue; By contrast, the reflecting rate of traditional solar cell backboard only can reach 80%, the higher 13K/m of thermal resistance
2k/W, weatherability poor (UV-90kwh, ▽ b=4.9), heat-resisting lower, RTI=70 DEG C, reprocesses difficulty, has residual, and polyolefm film layer remains on encapsulation EVA.
Embodiment 5
Two-layer structure PET film and the solar cell backboard be made up of this PET film, PET film 3 preparation method of two-layer structure and structure in this example, and the solar cell backboard 9 be made up of this film, backboard 9 assemble after structure with above-described embodiment 1.
Wherein, PET film 3 thickness is 0.500mm, and the thickness of outer 1 is 0.100mm, and the thickness of internal layer 2 is 0.400mm.The surface gloss of outer 1 is 5, and the surface gloss of internal layer 2 is 90, and wherein measuring glossiness ray cast angle is 60 °, meets standard GB/T/T9754-2007 and international standard ISO2813:1994; Internal layer 2 integration ball show that surface reflectivity is 88%, wherein the wavelength of light scope 400 ~ 1100nm of measurement of reflectivity.
The solar cell backboard 9 of above-mentioned two-layer structure PET film composition, in its weather-proof coat 4, organic resin is end hydroxy butadiene resin, curing agent is amine curing agent, inorganic filler is calcium carbonate and ground pumice mixture, and in wherein said weather-proof coat, shared by inorganic filler, mass ratio is 1%.The thickness of weather-proof coat 4 is 0.001mm.
After above-mentioned backboard 9 is assembled in this example, there is the reflecting rate up to 89%, thermal resistance 7.5m
2k/W, excellent weather resisteant (UV-90kwh, ▽ b=0.50), high heat resistance: RTI=115 DEG C, it is good to reprocess performance, noresidue; By contrast, the reflecting rate of traditional solar cell backboard only can reach 80%, the higher 13K/m of thermal resistance
2k/W, weatherability poor (UV-90kwh, ▽ b=4.9), heat-resisting lower, RTI=70 DEG C, reprocesses difficulty, has residual, and polyolefm film layer remains on encapsulation EVA.
Embodiment 6
A kind of two-layer structure PET film and the solar cell backboard be made up of this PET film, PET film 3 preparation method of two-layer structure and structure in this example, and the solar cell backboard 9 to be made up of this film, backboard 9 assemble after structure with above-described embodiment 1 or 2.
Wherein, PET film 3 thickness is 0.500mm, and the thickness of outer 1 is 0.100mm, and the thickness of internal layer 2 is 0.400mm.The surface gloss of outer 1 is 5, and the surface gloss of internal layer 2 is 90, and wherein measuring glossiness ray cast angle is 60 °, meets standard GB/T/T9754-2007 and international standard ISO2813:1994; Internal layer 2 integration ball show that surface reflectivity is 88%, wherein the wavelength of light scope 400 ~ 1100nm of measurement of reflectivity.
The solar cell backboard 9 of above-mentioned two-layer structure PET film composition, in its weather-proof coat 4, organic resin is dimer acid modified epoxy resin, curing agent is cyanamid dimerization system curing agent, and inorganic filler is bortz powder, and in wherein said weather-proof coat, shared by inorganic filler, mass ratio is 1%.The thickness of weather-proof coat 4 is 0.001mm.
After above-mentioned backboard 9 is assembled in this example, there is the reflecting rate up to 89%, thermal resistance 7.5m
2k/W, excellent weather resisteant (UV-90kwh, ▽ b=0.50), high heat resistance: RTI=115 DEG C, it is good to reprocess performance, noresidue; By contrast, the reflecting rate of traditional solar cell backboard only can reach 80%, the higher 13K/m of thermal resistance
2k/W, weatherability poor (UV-90kwh, ▽ b=4.9), heat-resisting lower, RTI=70 DEG C, reprocesses difficulty, has residual, and polyolefm film layer remains on encapsulation EVA.
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 invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All modifications done according to the Spirit Essence of main technical schemes of the present invention, all should be encompassed within protection scope of the present invention.
Claims (9)
1. a two-layer structure PET film, is characterized in that, described PET film (3) is formed by outer (1) and the two-layer PET film co-extrusion of internal layer (2); The thickness of described PET film (3) is 0.050mm ~ 1.000mm, and its ectomesoderm (1) thickness is 0.010mm ~ 0.120mm, and internal layer (2) thickness is 0.010mm ~ 0.880mm; Described skin (1) surface gloss is 0 ~ 100, and wherein measuring glossiness ray cast angle is 60 °; Described internal layer (2) surface gloss is 1 ~ 99, and wherein measuring glossiness ray cast angle is 60 °; Described internal layer (2) surface reflectivity is 30 ~ 99%, and wherein the wavelength of light scope of measurement of reflectivity is at 400 ~ 1100nm.
2. a kind of two-layer structure PET film according to claim 1, it is characterized in that, the thickness of described PET film (3) is 0.050mm-0.320mm, and thickness is 0.020mm-0.060mm, and internal layer (2) thickness is 0.030mm-0.300mm; Described skin (1) lustrous surface is 10 ~ 60, and wherein measuring glossiness ray cast angle is 60 °; Described internal layer (2) surface gloss is 10 ~ 60, and wherein measuring glossiness ray cast angle is 60 °; Described internal layer (2) surface reflectivity is 60 ~ 99%, and wherein the wavelength of light scope of measurement of reflectivity is at 400 ~ 1100nm.
3. the solar cell backboard of a kind of two-layer structure PET film composition as claimed in claim 1, it is characterized in that, described backboard (9) is with the PET film of described two-layer structure (3) for basic unit, and in described basic unit, internal layer (2) side applies the weather-proof coat of one deck (4) composition.
4. the solar cell backboard of a kind of two-layer structure PET film composition according to claim 3, it is characterized in that, described weather-proof coat (4) comprises organic resin, curing agent and inorganic filler.
5. the solar cell backboard of a kind of two-layer structure PET film composition according to claim 4, is characterized in that,
In described weather-proof coat (4), organic resin is selected from polytetrafluoroethylene (PTFE) fluorocarbon resin, poly-difluoroethylene fluorocarbon resin, perfluorinated resin, fluoroacrylic resin, fluorine silicon resin, hydroxy acryl acid resin, carbonate polyol resin, caprolactam polyol resin, dimeric dibasic acid polyol resin, end hydroxy butadiene resin, hydrogenated bisphenol A epoxy resin, end hydroxy butadiene epoxy resin, Zhi Huan race epoxy resin, the one in dimer acid modified epoxy resin and aliphatic epoxy resin;
Curing agent is selected from isocyanate-based curing agent, imidazole curing agent, hydrazides curing agent, amine resin curing agent in described weather-proof coat (4), the one in amine curing agent and cyanamid dimerization system curing agent;
Inorganic filler to be selected from titanium dioxide, titanium dioxide two aluminium, aluminium hydroxide, talcum powder, silica, calcium carbonate, carbon black, mica powder, barium sulfate, diatomite, ground pumice, bortz powder one or both and above mixture in described weather-proof coat (4).
6. the solar cell backboard of a kind of two-layer structure PET film composition according to claim 4 or 5, it is characterized in that, in described weather-proof coat (4), shared by inorganic filler, mass ratio is X, wherein 0 < X≤90%.
7. the solar cell backboard of a kind of two-layer structure PET film composition according to claim 4 or 5, it is characterized in that, in described weather-proof coat (4), shared by inorganic filler, mass ratio is X, wherein 10%≤X≤70%.
8. the solar cell backboard of a kind of two-layer structure PET film composition according to claim 3,4 or 5 any one, it is characterized in that, the thickness of described weather-proof coat (4) is 0.001mm ~ 0.030mm.
9. the solar cell backboard of a kind of two-layer structure PET film composition according to claim 3,4 or 5 any one, it is characterized in that, preferably, described weather-proof coat (4) thickness is 0.001mm-0.007mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697488.8A CN104512081A (en) | 2014-11-27 | 2014-11-27 | Two-layer structural PET (polyethylene terephthalate) film and solar battery back plate prepared from two-layer structural PET film |
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| CN201410697488.8A CN104512081A (en) | 2014-11-27 | 2014-11-27 | Two-layer structural PET (polyethylene terephthalate) film and solar battery back plate prepared from two-layer structural PET film |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419617A (en) * | 2016-01-04 | 2016-03-23 | 中天光伏材料有限公司 | High-barrier-property photovoltaic backboard of multilayer structure |
| CN106876511A (en) * | 2017-02-22 | 2017-06-20 | 苏州赛伍应用技术有限公司 | A kind of solar cell backboard |
| CN112802909A (en) * | 2021-01-18 | 2021-05-14 | 浙江中聚材料有限公司 | Easy-to-clean solar photovoltaic back plate and preparation process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007007882A1 (en) * | 2005-07-11 | 2007-01-18 | Teijin Dupont Films Japan Limited | Laminate film |
| WO2011040398A1 (en) * | 2009-09-29 | 2011-04-07 | 東洋紡績株式会社 | Polyester film for solar cells |
| CN102516852A (en) * | 2011-12-16 | 2012-06-27 | 新高电子材料（中山）有限公司 | Weather-resistant and high thermal conductive coating, radiating solar rear panel and efficient solar cell panel |
| CN204506046U (en) * | 2014-11-27 | 2015-07-29 | 苏州赛伍应用技术有限公司 | A kind of two-layer structure PET film and consisting of solar cell backboard |
-
2014
- 2014-11-27 CN CN201410697488.8A patent/CN104512081A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007007882A1 (en) * | 2005-07-11 | 2007-01-18 | Teijin Dupont Films Japan Limited | Laminate film |
| WO2011040398A1 (en) * | 2009-09-29 | 2011-04-07 | 東洋紡績株式会社 | Polyester film for solar cells |
| CN102516852A (en) * | 2011-12-16 | 2012-06-27 | 新高电子材料（中山）有限公司 | Weather-resistant and high thermal conductive coating, radiating solar rear panel and efficient solar cell panel |
| CN204506046U (en) * | 2014-11-27 | 2015-07-29 | 苏州赛伍应用技术有限公司 | A kind of two-layer structure PET film and consisting of solar cell backboard |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419617A (en) * | 2016-01-04 | 2016-03-23 | 中天光伏材料有限公司 | High-barrier-property photovoltaic backboard of multilayer structure |
| CN106876511A (en) * | 2017-02-22 | 2017-06-20 | 苏州赛伍应用技术有限公司 | A kind of solar cell backboard |
| CN112802909A (en) * | 2021-01-18 | 2021-05-14 | 浙江中聚材料有限公司 | Easy-to-clean solar photovoltaic back plate and preparation process thereof |
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Address after: 215200, Wujiang economic and Technological Development Zone, Suzhou, Jiangsu Province, No. 369, Hong Kong Road, Tianjin Road Applicant after: Suzhou competition application technology Limited by Share Ltd Address before: 215200, Wujiang economic and Technological Development Zone, Suzhou, Jiangsu Province, No. 369, Hong Kong Road, Tianjin Road Applicant before: Suzhou Saiwu Application Technology Co., Ltd. |
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Application publication date: 20150415 |