CN104494266A - PET film with two-layer structure and solar cell backboard comprising PET film - Google Patents
PET film with two-layer structure and solar cell backboard comprising PET film Download PDFInfo
- Publication number
- CN104494266A CN104494266A CN201410699326.8A CN201410699326A CN104494266A CN 104494266 A CN104494266 A CN 104494266A CN 201410699326 A CN201410699326 A CN 201410699326A CN 104494266 A CN104494266 A CN 104494266A
- Authority
- CN
- China
- Prior art keywords
- layer
- pet film
- resin
- thickness
- solar cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a PET film with a two-layer structure and a solar cell backboard comprising the PET film. An outer PET film and an inner PET film are subjected to bidirectional stretching co-extrusion to form the PET film with a two-layer structure. The PET film has small thickness, a high rate of heat dissipation, a high reflecting rate and long-term aging resistance. The PET film with a two-layer structure is used as a base layer, and an adhesive layer and an insulation film layer are bonded at a side of the base layer so that the solar cell backboard is formed. The PET film has excellent insulation, heat radiation, heat resistance, mechanical properties and water-blocking properties. Compared with the existing solar cell backboard, the solar cell backboard comprising the PET film has better heat resistance, weatherability and water-blocking properties, has a simple structure and can be repaired easily.
Description
Technical field
The solar cell backboard that the present invention relates to a kind of polyester (PET) film and be made up of this film, relate to a kind of polyester (PET) film with two-layer structure in particular, with be made up of this film there is high-weatherability and high water resistant, the solar cell backboard of high Cohesion reliability.
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 the life-span and the generating efficiency that affect cell piece in water vapor permeable to sealant.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 0.020-0.180mm 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 heat transfer efficiency of backboard is poor, heat resistance is poor, reflecting rate is low affects cell power generation efficiency, towards the low too early efflorescence of this layer of material having caused battery unilateral of internal layer uv-resistance energy of cell piece, 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 thermal conductivity is high, reflecting rate is high, the two-layer structure PET coextruded film that resisting ageing for long time performance is good, cover by adhesive layer 4 solar cell backboard 10 that insulating thin layer 5 forms with by this PET film, this backboard 10 has high-weatherability and high-adhesion, structure is simple, easily reprocesses.
Technical scheme of the present invention is:
A PET film for two-layer structure, described PET film 3 is formed by outer 1 and the two-layer PET film biaxial tension 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 ~ 0.060mm, and internal layer 2 thickness is 0.010mm ~ 0.980mm; Described outer 1 surface gloss is 0 ~ 99, and projectional angle is 60 °; Measuring glossiness ray cast angle is 60 °, and described internal layer 2 surface gloss is 1-99, and projectional angle is 60 °, and measuring glossiness ray cast angle is 60 °, and surface reflectivity is 30 ~ 99%, and the wavelength of light scope of measurement of reflectivity is at 400-1100nm.
Further, preferably, the thickness of described film 3 is 0.050mm ~ 0.250mm, and its ectomesoderm 1 thickness is 0.010mm ~ 0.050mm, and internal layer 2 thickness is 0.040mm ~ 0.250mm; Described outer 1 lustrous surface is 10 ~ 60; Described internal layer 2 surface gloss is 10 ~ 60, and surface reflectivity is 30 ~ 90%.
The solar cell backboard that the PET film 3 that present invention also offers above-mentioned two-layer structure forms, described backboard 10 is with the PET film 3 of described two-layer structure for basic unit, and in described basic unit, internal layer 2 side adheres to one deck insulating thin layer 5 by adhesive layer 4 and forms.
Further, described insulating thin layer 5 comprises organic resin and inorganic filler;
Further, described adhesive layer 4 comprises adhesive and inorganic filler.
Further, preferably, in described insulating thin layer 5, organic resin is selected from polyvinyl resin, polyflon, poly-trifluoro-ethylene resin, polyvinylidene fluoride resin, polyfluoroethylene resin, polyamide, acrylic resin, polycyclic olefin copolymer resin, hydrogenated polystyrene-polyethylene-polybutene-polystyrene block copolymer rubber elastomer resin, hydrogenated polystyrene-polyethylene-polypropylene-polystyrene elastic rubbery body resin, polyolefin elastomer resin, polymethyl methacrylate resin, methyl methacrylate and butyl acrylate blocks copolymer resin, ethylene-vinyl acetate copolymer resin, organic siliconresin, one in TPU,
Further, preferably, in described adhesive layer 4, adhesive is selected from polyurethane adhesive, acrylic acid adhesive, epoxyn, organic silicon resin adhesive, the one in polyurea adhesive;
Further, preferably, in described insulating thin layer 5 and adhesive layer 4, inorganic filler is selected from titanium dioxide, alundum (Al2O3), aluminium hydroxide, talcum powder, silica, calcium carbonate, carbon black, mica powder, barium sulfate, diatomite, ground pumice, one or both and above mixture in bortz powder.
Further, preferably, in described insulating thin layer 5, shared by inorganic filler, mass ratio is X, wherein 0 < X≤90%;
Further, preferably, in described adhesive layer 4, shared by inorganic filler, mass ratio is Y, wherein 0≤Y≤90%.
Further, preferably, in described insulating thin layer 5, shared by inorganic filler, mass ratio is X, wherein 0 < X≤60%;
Further, preferably, in described adhesive layer 4, shared by inorganic filler, mass ratio is Y, wherein 0≤Y≤50%.
Further, preferably, the thickness of described insulating thin layer 5 is 0.010mm-0.945mm;
Further, preferably, the thickness of described adhesive layer 4 is 0.001mm-0.050mm.
Further, preferably, the thickness of described insulating thin layer 5 is 0.030mm-0.200mm;
Further, preferably, the thickness of described adhesive layer 4 is 0.003mm-0.020mm.
Advantage of the present invention is: the PET polyester film thickness of two-layer structure of the present invention is thin, and have rate of heat dissipation high, reflecting rate is high, and water vapor transmittance is low, and resisting ageing for long time performance waits premium properties well; Adhere to by adhesive layer the thickness that the solar cell backboard that form of insulating thin layer effectively can reduce backboard by it, the radiating efficiency of raising backboard and light reflectivity, thus make backboard heat resistance and weatherability excellent, it is more easy to reprocess.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the structural representation of the PET film of two-layer structure 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, 4-adhesive layer, 5-insulating thin layer, and 6,8-EVA encapsulated layer, 7-cell piece, 9-glassy layer, 10-backboard.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments to the PET film of two-layer structure of the present invention and consisting of solar cell backboard be specifically described.
Embodiment 1:
The PET film that the invention provides a kind of two-layer structure and the solar cell backboard 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; Wherein, the thickness of PET film 3 is 0.250mm, and outer 1 thickness is 0.050mm, and internal layer 2 thickness is 0.200mm.The surface gloss of outer 1 is 10, and described internal layer 2 surface gloss 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 80%, 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 280-400nm ultraviolet more than 99%, after 280-400nm ultraviolet 90KWh/ ㎡ irradiates, yellowness index ▽ b<3; Hydrolysis, PCT tests 121 DEG C, 100% humidity, and after 60 hours, residue elongation at break is all more than 10%.Internal layer 2 does not block ultraviolet, hydrolysis.PCT tests 121 DEG C, 100% humidity, and after 36 hours, inside and outside layer film residue elongation at break 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 the PET film of above-mentioned double-layer structure, 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 adheres to one deck insulating thin layer 5 by adhesive layer 4 and forms backboard 10 for its structure.
Above-mentioned insulating thin layer 5 comprises organic resin and organic filler, and in this example, organic resin is polyvinyl resin, and organic filler is titanium dioxide (TiO
2) and alundum (Al2O3) (Al
2o
3) mixture, wherein in insulating thin layer 5, organic filler mass ratio is 60%; The thickness of described insulation film 5 is 0.200mm.
Above-mentioned adhesive layer 4 comprises adhesive and inorganic filler, and in this example, adhesive is polyurethane series adhesive, and described inorganic filler is talcum powder (TALC) and silica (SiO
2) mixture, in described viscose glue oxidant layer 4, shared by inorganic filler, mass ratio is 50%, and the thickness of described viscose glue oxidant layer 4 is 0.003mm.
Structural representation after the assembling of above-mentioned solar cell backboard 10 as shown in Figure 3.In backboard 10, the side of insulating thin layer 5 and EVA encapsulated layer 6 bond, and cell piece 7 is arranged between two EVA encapsulated layers 6 and 8, and encapsulated layer 8 and outermost glassy layer 9 have bondd the installation of whole solar module.
Solar cell backboard 10 in the present embodiment has high reflecting rate, and its reflectivity is 91%, thermal resistance 10m
2k/W, excellent weatherability (UV-90kwh, △ b=0.7), it is good to reprocess performance, noresidue.High-fire resistance: RTI=120 DEG C, 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=5), reprocesses difficulty, has residual, and polyolefm film layer remains on encapsulation EVA, heat-resisting lower, RTI=70 DEG C.
Embodiment 2:
The PET film of two-layer structure and the solar cell backboard be made up of this PET film, PET film preparation method and structure, PET film are that solar cell backboard 10 structure of basic unit's composition and backboard 10 package assembly are with embodiment 1.
Performance is blocked, skin 1 and the inorganic filler TiO of internal layer 2 all containing high index of refraction for improving ectonexine ultraviolet
2, wherein, PET film 3 thickness is 0.050mm, and its ectomesoderm 1 thickness is 0.010mm, and internal layer 2 thickness is 0.040mm.The surface gloss of outer 1 is 60, and described internal layer 2 surface gloss 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%, 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 and outer 2 can block 280-400nm ultraviolet more than 99%, after 280-400nm ultraviolet 90KWh/ ㎡ irradiates, yellowness index ▽ b<3; Hydrolysis, PCT tests 121 DEG C, 100% humidity, and after 60 hours, residue elongation at break 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.
In this example, (in this example, polyfluoroethylene resin also can change its polyfluoroethylene resin into as polyflon for the organic resin polyfluoroethylene resin of insulating thin layer 5, poly-trifluoro-ethylene resin, polyvinylidene fluoride resin), organic filler is talcum powder and silica mixture, and wherein in insulating thin layer 5, organic filler mass ratio is 90%; The thickness of described insulation film 5 is 0.945mm.
In this example, the adhesive of adhesive layer 4 is acrylic acid adhesive, and in described viscose glue oxidant layer 4, shared by inorganic filler, mass ratio is 0, and the thickness of described viscose glue oxidant layer 4 is 0.001mm.
After in this example, solar cell backboard 10 is assembled, its reflectivity is 93%, thermal resistance 9.5m
2k/W, excellent weatherability (UV-90kwh, △ b=0.7), it is good to reprocess performance, noresidue.High-fire resistance: RTI=120 DEG C, 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=5), reprocesses difficulty, has residual, and polyolefm film layer remains on encapsulation EVA, heat-resisting lower, RTI=70 DEG C.
Embodiment 3:
The PET film preparation method of two-layer structure and structure in this example, PET film are that solar cell backboard 10 structure of basic unit's composition and backboard 10 package assembly are with embodiment 1.
Block ultraviolet performance for improving outer 1, it can add the inorganic filler TiO of high index of refraction
2, the thickness of PET film 3 is 1.000mm, and outer 1 thickness is 0.020mm, and internal layer 2 thickness is 0.980mm.The surface gloss of outer 1 is 99, and described internal layer 2 surface gloss 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%, and wherein the wavelength of light scope of measurement of reflectivity is at 400 ~ 1100nm; Described PET film weatherability is similar to Example 1.
The organic resin polyamide that insulating thin layer 5 in this routine dorsulum 10 comprises, organic filler is calcium carbonate and mica powder mixture, and wherein in insulating thin layer 5, organic filler mass ratio is 0.5%; The thickness of described insulation film 5 is 0.030mm.
In this example, the adhesive of adhesive layer 4 is epoxyn, and inorganic filler is aluminium hydroxide and diatomite mixture, and in described adhesive layer 4, shared by inorganic filler, mass ratio is 90%, and the thickness of described adhesive layer 4 is 0.020mm.
After in this example, solar cell backboard 10 is assembled, its reflectivity is 90%, thermal resistance 10m
2k/W, excellent weatherability (UV-90kwh, △ b=0.72), it is good to reprocess performance, noresidue.High-fire resistance: RTI=110 DEG C, 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=5), reprocesses difficulty, has residual, and polyolefm film layer remains on encapsulation EVA, heat-resisting lower, RTI=70 DEG C.
Embodiment 4:
The PET film preparation method of two-layer structure and structure in this example, PET film are that solar cell backboard 10 structure of basic unit's composition and backboard 10 package assembly are with embodiment 1.
Wherein, the thickness of PET film 3 is 0.070mm, and outer 1 thickness is 0.060mm, and internal layer 2 thickness is 0.010mm.The surface gloss of outer 1 is 1, 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; Described PET film weatherability is similar to Example 1.
The organic resin acrylic resin that insulating thin layer 5 in this routine dorsulum 10 comprises, organic filler is barium sulfate and diatomite mixture, and wherein in insulating thin layer 5, organic filler mass ratio is 60%; The thickness of described insulation film 5 is 0.200mm.
In this example, the adhesive of adhesive layer 4 is organic silicon resin adhesive, and inorganic filler is bortz powder, and in described adhesive layer 4, shared by inorganic filler, mass ratio is 5%, and the thickness of described adhesive layer 4 is 0.050mm.
After in this example, solar cell backboard 10 is assembled, its reflectivity is 90%, thermal resistance 9.5m
2k/W, excellent weatherability (UV-90kwh, △ b=0.70), it is good to reprocess performance, noresidue.High-fire resistance: RTI=115 DEG C, 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=5), reprocesses difficulty, has residual, and polyolefm film layer remains on encapsulation EVA, heat-resisting lower, RTI=70 DEG C.
Embodiment 5:
The PET film preparation method of two-layer structure and structure in this example, PET film are that solar cell backboard 10 structure of basic unit's composition and backboard 10 package assembly are with embodiment 1.
Wherein, the thickness of PET film 3 is 0.050mm, and outer 1 thickness is 0.010mm, and internal layer 2 thickness is 0.040mm.The surface gloss of outer 1 is 90, and described internal layer 2 surface gloss is 1, 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 35%, and wherein the wavelength of light scope of measurement of reflectivity is at 400 ~ 1100nm; Described PET film weatherability is similar to Example 1.
The organic resin that insulating thin layer 5 in this routine dorsulum 10 comprises is polycyclic olefin copolymer resin, and organic filler is aluminium hydroxide, and wherein in insulating thin layer 5, organic filler mass ratio is 60%; The thickness of described insulation film 5 is 0.200mm.
In this example, the gluing jelly of adhesive layer 4 is polyurea adhesive, and inorganic filler is titanium dioxide, and in described adhesive layer 4, shared by inorganic filler, mass ratio is 50%, and the thickness of described adhesive layer 4 is 0.050mm.
After in this example, solar cell backboard 10 is assembled, its reflectivity is 90%, thermal resistance 9.5m
2k/W, excellent weatherability (UV-90kwh, △ b=0.70), it is good to reprocess performance, noresidue.High-fire resistance: RTI=115 DEG C, 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=5), reprocesses difficulty, has residual, and polyolefm film layer remains on encapsulation EVA, heat-resisting lower, RTI=70 DEG C.
Embodiment 6:
In this example, the PET film preparation method of two-layer structure, thickness, luster performance are with embodiment 5.Backboard 10 structure and backboard 10 assemble after structure all with embodiment 5, in backboard 10, adhesive layer 4 forms structure with embodiment 5.
Wherein, the organic resin that insulating thin layer 5 in this routine dorsulum 10 comprises is hydrogenated polystyrene-polyethylene-polybutene-polystyrene block copolymer rubber elastomer resin (can also the changing hydrogenated polystyrene-polyethylene-polypropylene-polystyrene elastic rubbery body resin into of hydrogenated polystyrene-polyethylene-polybutene-polystyrene block copolymer rubber elastomer resin described in this example), organic filler is aluminium hydroxide, and wherein in insulating thin layer 5, organic filler mass ratio is 60%; The thickness of described insulation film 5 is 0.200mm.
This routine dorsulum 10 assembles rear its light reflectance, thermal resistance and weather resistance and embodiment 5 is similar to.
Embodiment 7:
In this example, the PET film preparation method of two-layer structure, thickness, luster performance are with embodiment 5.Backboard 10 structure and backboard 10 assemble after structure all with embodiment 5.In backboard 10, adhesive layer 4 groups of structures are with embodiment 5.
Wherein, the organic resin that the insulating thin layer 5 in this routine dorsulum 10 comprises is polyolefin elastomer resin, and organic filler is aluminium hydroxide, and wherein in insulating thin layer 5, organic filler mass ratio is 60%; The thickness of described insulation film 5 is 0.200mm.
This routine dorsulum 10 assembles rear its light reflectance, thermal resistance and weather resistance and embodiment 5 is similar to.
Embodiment 8:
In this example, the PET film preparation method of two-layer structure, thickness, luster performance are with embodiment 5.Backboard 10 structure and backboard 10 assemble after structure all with embodiment 5.In backboard 10, adhesive layer 4 groups of structures are with embodiment 5.
Wherein, the organic resin that the insulating thin layer 5 in this routine dorsulum 10 comprises is polymethyl methacrylate resin, and organic filler is aluminium hydroxide, and wherein in insulating thin layer 5, organic filler mass ratio is 60%; The thickness of described insulation film 5 is 0.200mm.
This routine dorsulum 10 assembles rear its light reflectance, thermal resistance and weather resistance and embodiment 5 is similar to.
Embodiment 9:
In this example, the PET film preparation method of two-layer structure, thickness, luster performance are with embodiment 5.Backboard 10 structure and backboard 10 assemble after structure all with embodiment 5.In backboard 10, adhesive layer 4 groups of structures are with embodiment 5.
Wherein, the organic resin that the insulating thin layer 5 in this routine dorsulum 10 comprises is methyl methacrylate and butyl acrylate blocks copolymer resin, and organic filler is aluminium hydroxide, and wherein in insulating thin layer 5, organic filler mass ratio is 60%; The thickness of described insulation film 5 is 0.200mm.
This routine dorsulum 10 assembles rear its light reflectance, thermal resistance and weather resistance and embodiment 5 is similar to.
Embodiment 10:
In this example, the PET film preparation method of two-layer structure, thickness, luster performance are with embodiment 5.Backboard 10 structure and backboard 10 assemble after structure all with embodiment 5.In backboard 10, adhesive layer 4 forms structure with embodiment 5.
Wherein, the organic resin that the insulating thin layer 5 in this routine dorsulum 10 comprises is ethylene-vinyl acetate copolymer resin, and organic filler is aluminium hydroxide, and wherein in insulating thin layer 5, organic filler mass ratio is 60%; The thickness of described insulation film 5 is 0.200mm.
This routine dorsulum 10 assembles rear its light reflectance, thermal resistance and weather resistance and embodiment 5 is similar to.
Embodiment 11:
In this example, the PET film preparation method of two-layer structure, thickness, luster performance are with embodiment 5.Backboard 10 structure and backboard 10 assemble after structure all with embodiment 5.In backboard 10, adhesive layer 4 forms same embodiment 5.
Wherein, the organic resin that the insulating thin layer 5 in this routine dorsulum 10 comprises is organic siliconresin, and organic filler is aluminium hydroxide, and wherein in insulating thin layer 5, organic filler mass ratio is 60%; The thickness of described insulation film 5 is 0.200mm.
This routine dorsulum 10 assembles rear its light reflectance, thermal resistance and weather resistance and embodiment 5 is similar to.
Embodiment 12:
In this example, the PET film preparation method of two-layer structure, thickness, luster performance are with embodiment 5.Backboard 10 structure and backboard 10 assemble after structure all with embodiment 5.In backboard 10, adhesive layer 4 forms structure with embodiment 5.
Wherein, the organic resin that the insulating thin layer 5 in this routine dorsulum 10 comprises is TPU, and organic filler is aluminium hydroxide, and wherein in insulating thin layer 5, organic filler mass ratio is 60%; The thickness of described insulation film 5 is 0.200mm.
This routine dorsulum 10 assembles rear its light reflectance, thermal resistance and weather resistance and embodiment 5 is similar to.
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.
Claims (9)
1. a PET film for two-layer structure, is characterized in that, described PET film (3) is formed by outer (1) and the two-layer PET film biaxial tension 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 ~ 0.060mm, and internal layer (2) thickness is 0.010mm ~ 0.980mm; Described skin (1) surface gloss is 1 ~ 99, 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) surperficial light reflectance is 30 ~ 99%, and wherein the wavelength of light scope of measurement of reflectivity is at 400 ~ 1100nm.
2. the PET film of a kind of two-layer structure according to claim 1, it is characterized in that, the thickness of described PET film (3) is 0.050mm ~ 0.250mm, its ectomesoderm (1) thickness is 0.010mm ~ 0.050mm, and internal layer (2) thickness is 0.040mm ~ 0.250mm; 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 30 ~ 90%, and wherein 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 two-layer structure as claimed in claim 1, it is characterized in that, described backboard (10) is by the PET film (3) of described two-layer structure as basic unit, and in described basic unit, internal layer (2) side adheres to one deck insulating thin layer (5) composition by adhesive layer (4).
4. the solar cell backboard of the PET film composition of a kind of two-layer structure according to claim 3, it is characterized in that, described insulating thin layer (5) comprises organic resin and inorganic filler; Described adhesive layer (4) comprises adhesive and inorganic filler.
5. the solar cell backboard of the PET film composition of a kind of two-layer structure according to claim 4, is characterized in that,
In described insulating thin layer (5), organic resin is selected from polyvinyl resin, polyflon, poly-trifluoro-ethylene resin, polyvinylidene fluoride resin, polyfluoroethylene resin, polyamide, acrylic resin, polycyclic olefin copolymer resin, hydrogenated polystyrene-polyethylene-polybutene-polystyrene block copolymer rubber elastomer resin, hydrogenated polystyrene-polyethylene-polypropylene-polystyrene elastic rubbery body resin, polyolefin elastomer resin, polymethyl methacrylate resin, methyl methacrylate and butyl acrylate blocks copolymer resin, ethylene-vinyl acetate copolymer resin, organic siliconresin, one in TPU,
In described adhesive layer (4), adhesive is selected from polyurethane adhesive, acrylic acid adhesive, epoxyn, organic silicon resin adhesive, the one in polyurea adhesive;
In described insulating thin layer (5) and adhesive layer (4), inorganic filler to be selected from titanium dioxide, alundum (Al2O3), aluminium hydroxide, talcum powder, silica, calcium carbonate, carbon black, mica powder, barium sulfate, diatomite, ground pumice, bortz powder one or both and above mixture.
6. the solar cell backboard of the PET film composition of a kind of two-layer structure according to claim 4 or 5, it is characterized in that, in described insulating thin layer (5), shared by inorganic filler, mass ratio is X, wherein 0 < X≤90%; In described adhesive layer (4), shared by inorganic filler, mass ratio is Y, wherein 0≤Y≤90%.
7. the solar cell backboard of the PET film composition of a kind of two-layer structure according to claim 4 or 5, it is characterized in that, in described insulating thin layer (5), shared by inorganic filler, mass ratio is X, wherein 0 < X≤60%; In described adhesive layer (4), shared by inorganic filler, mass ratio is Y, wherein 0≤X≤50%.
8. the solar cell backboard of the PET film composition of a kind of two-layer structure according to claim 3,4 or 5 any one, it is characterized in that, the thickness of described insulating thin layer (5) is 0.010mm-0.945mm; The thickness of described adhesive layer (4) is 0.001mm-0.050mm.
9. the solar cell backboard of the PET film composition of a kind of two-layer structure according to claim 3,4 or 5 any one, it is characterized in that, the thickness of described insulating thin layer (5) is 0.030mm-0.200mm; The thickness of described adhesive layer (4) is 0.003mm-0.020mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410699326.8A CN104494266A (en) | 2014-11-27 | 2014-11-27 | PET film with two-layer structure and solar cell backboard comprising PET film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410699326.8A CN104494266A (en) | 2014-11-27 | 2014-11-27 | PET film with two-layer structure and solar cell backboard comprising PET film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104494266A true CN104494266A (en) | 2015-04-08 |
Family
ID=52935758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410699326.8A Pending CN104494266A (en) | 2014-11-27 | 2014-11-27 | PET film with two-layer structure and solar cell backboard comprising PET film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104494266A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110667216A (en) * | 2019-09-30 | 2020-01-10 | 常州回天新材料有限公司 | Integrally formed PET co-extrusion transparent back plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101218098A (en) * | 2005-07-11 | 2008-07-09 | 帝人杜邦薄膜日本有限公司 | Laminate film |
| CN101997038A (en) * | 2009-08-19 | 2011-03-30 | 南京纳泉高科材料股份有限公司 | Solar battery back panel film and preparation method thereof |
| CN104170098A (en) * | 2012-03-14 | 2014-11-26 | 东洋纺株式会社 | Sealing sheet for back surface of solar cell, and solar cell module |
| CN204506047U (en) * | 2014-11-27 | 2015-07-29 | 苏州赛伍应用技术有限公司 | A kind of PET film of two-layer structure and consisting of solar cell backboard |
-
2014
- 2014-11-27 CN CN201410699326.8A patent/CN104494266A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101218098A (en) * | 2005-07-11 | 2008-07-09 | 帝人杜邦薄膜日本有限公司 | Laminate film |
| CN101997038A (en) * | 2009-08-19 | 2011-03-30 | 南京纳泉高科材料股份有限公司 | Solar battery back panel film and preparation method thereof |
| CN104170098A (en) * | 2012-03-14 | 2014-11-26 | 东洋纺株式会社 | Sealing sheet for back surface of solar cell, and solar cell module |
| CN204506047U (en) * | 2014-11-27 | 2015-07-29 | 苏州赛伍应用技术有限公司 | A kind of PET film of two-layer structure and consisting of solar cell backboard |
Non-Patent Citations (1)
| Title |
|---|
| 辽宁省土木建筑学会等: "《建筑与预算知识手册——词汇篇》", 31 December 1989, 辽宁科学技术出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110667216A (en) * | 2019-09-30 | 2020-01-10 | 常州回天新材料有限公司 | Integrally formed PET co-extrusion transparent back plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104512082A (en) | Three-layer structural PET (polyethylene terephthalate) film and solar battery back plate prepared from three-layer structural PET film | |
| JP5632397B2 (en) | Laminated polymer film and solar cell module made therefrom | |
| CN101728437B (en) | Backboard with packaging function and solar panel using same | |
| CN203423206U (en) | Solar cell back sheet and solar cell module | |
| KR20100100746A (en) | Encapsulant materials and associated devices | |
| CN101605657A (en) | The backboard of photovoltaic module and the method for keeping in repair this backboard | |
| CN102832280A (en) | Laminated packaging film for solar batteries | |
| US20140137939A1 (en) | Solar-cell module and manufacturing method therefor | |
| CN103000728A (en) | Solar cell back panel assembly and solar cell assembly | |
| CN205050854U (en) | Silver color solar cell back sheet and subassembly thereof | |
| KR20120112471A (en) | High performance backsheet for photovoltaic applications and method for manufacturing the same | |
| CN104992995A (en) | Composite membrane, preparation method thereof and solar cell assembly | |
| CN103646980B (en) | A kind of notacoria with ultraviolet translation function | |
| CN107195715A (en) | Solar photovoltaic assembly and building curtain wall | |
| CN204516787U (en) | The solar cell backboard of a kind of three-decker PET film and composition thereof | |
| CN115274900B (en) | Quantum dot photovoltaic backboard and double-sided photovoltaic module | |
| CN202473968U (en) | Photovoltaic cell backplane and photovoltaic cell using the same | |
| CN204506047U (en) | A kind of PET film of two-layer structure and consisting of solar cell backboard | |
| CN104518040A (en) | Tri-layer PET (polyethylene glycol terephthalate) film and solar battery backboard constituted by same | |
| CN204516786U (en) | A kind of three-decker PET film and consisting of solar cell backboard | |
| CN103144390A (en) | Rear panel for solar battery | |
| CN103579391A (en) | Solar cell backboard and solar cell assembly with same | |
| CN104512081A (en) | Two-layer structural PET (polyethylene terephthalate) film and solar battery back plate prepared from two-layer structural PET film | |
| KR20130017690A (en) | Solar cell module | |
| CN104494266A (en) | PET film with two-layer structure and solar cell backboard comprising PET film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
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. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150408 |
|
| RJ01 | Rejection of invention patent application after publication |