CN203277446U - Solar battery backboard - Google Patents
Solar battery backboard Download PDFInfo
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- CN203277446U CN203277446U CN201320232788XU CN201320232788U CN203277446U CN 203277446 U CN203277446 U CN 203277446U CN 201320232788X U CN201320232788X U CN 201320232788XU CN 201320232788 U CN201320232788 U CN 201320232788U CN 203277446 U CN203277446 U CN 203277446U
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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
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Abstract
The utility model belongs to the technical field of solar battery backboards, especially relates to a weather-proof solar battery backboard. The backboard sequentially comprises an outer weather-proof layer, a barrier layer, a structure reinforcement layer, an inner weather-proof layer and a bonding layer, so that the service life is prolonged, the usage amount of fluorine materials in the backboard is reduced, furthermore the production cost is reduced. The weather-proof solar battery backboard in a five-layer co-extrusion structure has good comprehensive performance.
Description
Technical field
The utility model relates to the solar cell backboard technical field, relates in particular to a kind of solar cell backboard.
Background technology
Exhaustion day by day due to fossil energy; people are also day by day urgent to the exploration of emerging energy; solar energy has been subject to people as a kind of wide material sources, nexhaustible emerging energy and has more and more paid close attention to; heliotechnics is also thereupon day by day ripe; but due to the solar components long term exposure in outdoor application; can be subject to steam, oxygen and ultraviolet impact and destruction, so need one deck to play the solar cell backboard of support and protective effect.
Because the fluorine material has superior weatherability, so the fluorine material can be used as barrier layer and be placed on the top layer of backboard to improve the weatherability of solar cell backboard in the back veneer material of industrialization, but because the resource scarcity of fluororesin own causes holding at high price, and the fluororesin fusing point is higher, be difficult to processing, how to replace the use amount of fluorine material or reduction fluorine material with other material so people begin to explore, but still can obtain weatherability preferably.
Summary of the invention
In order to guarantee the useful life of solar cell backboard, can reduce the use amount of fluorine material in backboard to reduce costs simultaneously, the invention provides a kind of solar cell backboard and preparation method thereof.Solar cell backboard provided by the invention inboard is provided with interior weathering layer, taken into account weatherability when replacing the fluorine material, and outer surface still keeps stronger weatherability with the fluorine material; The combination properties such as the weatherability of solar cell backboard provided by the invention are better; In addition, this solar cell backboard adopts five-layer co-squeezing one step technique, has simplified successively compound process route, easy operating.
For reaching above purpose, technical scheme of the present invention is as follows:
Solar cell backboard of the present invention (also referred to as the solar cell backboard film, solar energy backboard, or composite membrane) comprises outer weathering layer, barrier layer, structural reinforcing layer, interior weathering layer and tack coat successively; Described outer weathering layer is the fluorine film; The material of described barrier layer is polyvinylidene chloride (PVDC) or ethylene/vinyl alcohol copolymer (EVOH); The material of described structural reinforcing layer and interior weathering layer comprises PETG (PET); Described tack coat is polyvinyl butyral resin (PVB) or ethylene-vinyl acetate copolymer (EVA).Further, the material of described structural reinforcing layer and interior weathering layer is identical.Further, the material of described structural reinforcing layer and interior weathering layer is PETG (PET).
Described bonding layer material is ethylene-vinyl acetate copolymer, wherein, and vinyl acetate content≤14%.Melt index≤10g/10min(melt index test condition: 190 ° of C, 2.16kg).Vinyl acetate content is higher, or the higher five-layer co-squeezing one-step preparation process that is unfavorable for of melt index, weathering layer outside can easily adhering in wrapup procedure; Vinyl acetate content is lower, or low its caking property variation that can make again of melt index.
Described solar cell backboard thickness is 280-400 μ m, and the thickness of its China and foreign countries' weathering layer, barrier layer, structural reinforcing layer, interior weathering layer and tack coat accounts for respectively 10-20%, 5-10%, 50-70%, 10-20% and the 5-10% of solar cell backboard thickness.
Further, described solar cell backboard is the five-layer co-squeezing structure.
Further, described outer weathering layer material comprises a kind of of polyvinyl fluoride (PVF), Kynoar (PVDF); Described structural reinforcing layer material comprises PET section, 1-10% inorganic particulate and the 1-5% chain extender of 85-98%.The percentage composition of described material is weight percentage.Wherein the intrinsic viscosity of PET section is 0.6-0.8dL/g, and inorganic particulate is selected from barium sulfate, titanium dioxide or its combination; Described chain extender is selected from the epoxy type polymer.
Further, described interior weathering layer material comprises the PET section of 90-99% and the hydrolysis agent of 1%-10%.Wherein the intrinsic viscosity of PET section is 0.8-1.2dL/g, and described hydrolysis agent is selected from carbodiimides type polymer.
Described barium sulfate particle diameter is 0.5-2 μ m, and the titanium dioxide particle diameter is 0.3-0.5 μ m.Described chain extender is a kind of in tetraglycidel ether epoxy resin or maleic anhydride graft epoxy resin.Described hydrolysis agent is a kind of in haplotype carbodiimides or aggretion type carbodiimides.
Further, described outer weathering layer is PVF or PVDF, and the thickness of described outer weathering layer accounts for the 10-20% of solar cell backboard thickness; The material of described barrier layer is PVDC or EVOH, and the thickness of described barrier layer accounts for the 5-10% of solar cell backboard thickness; The material of described structural reinforcing layer comprises 85-98%PET, 1-10% barium sulfate, titanium dioxide or its combination, and 1-5% chain extender, and the thickness of described structural reinforcing layer accounts for the 50-70% of solar cell backboard thickness; The material of described interior weathering layer comprises the hydrolysis agent of 90-99%PET section and 1-10%, and the thickness of described interior weathering layer accounts for the 10-20% of solar cell backboard thickness; Described tack coat is PVB or EVA, and the thickness of described tack coat accounts for the 5-10% of solar cell backboard thickness.
Further, described outer weathering layer is PVF or pvdf membrane, accounts for the 10-15% of solar cell backboard thickness; The material of described barrier layer is PVDC or EVOH, accounts for the 5-10% of solar cell backboard thickness; The material of described structural reinforcing layer comprises 88-95%PET, and 3-8% barium sulfate, titanium dioxide or its combination, and 2-4% chain extender account for the 50-60% of solar cell backboard thickness; The material of described interior weathering layer comprises the hydrolysis agent of 92-98%PET section and 2-8%, accounts for the 15-20% of solar cell backboard thickness; Described tack coat is EVA, accounts for the 5-10% of solar cell backboard thickness.
Further, the preparation method of described solar cell backboard is as follows: (1) carries out respectively fusion plastification simultaneously with the raw material of each layer, plastifies good melt and enters casting mold by distributor and extrude the composite membrane that forms without the interface fusion; Processing temperature 180-220 ℃ of extruder of its China and foreign countries' weathering layer, the processing temperature 180-200 of the extruder of barrier layer ℃, the processing temperature of the extruder of structural reinforcing layer is 250-280 ℃, the processing temperature of the extruder of interior weathering layer is 250-280 ℃, and the processing temperature of the extruder of tack coat is 120-180 ℃.Above-mentioned extruder is five extruders, and the raw material of each layer comprises single raw material and the raw material of mixing.(2) the 80-140 ℃ of online high-temperature shaping 2min of five layers of composite membranes process that extrudes from mould, cooling, rolling.
Compared with prior art, the interior weathering layer of the non-fluorine polyester-type of the present invention is not affecting under the weather resistance prerequisite of backboard, well protection of the environment; And reduce the use amount of fluorine material in backboard, reached the purpose that reduces costs.The present invention makes backboard have combination property preferably by the choice and optimization to solar cell backboard layers of material and component proportioning.The tack coat of solar cell backboard provided by the invention (also claiming adhesive layer) can with the solar energy encapsulating material in PUR well be bonded together, make the solar energy backboard play lasting protective effect.The present invention directly prepares solar cell backboard by multi-layer co-extruded technology, simplified successively compound process route, easy operating.
Description of drawings
Fig. 1 is the structural representation of solar cell backboard provided by the invention.
Wherein, 1 is outer weathering layer, and 2 is barrier layer, and 3 is the structural reinforcing layer, and 4 is interior weathering layer, and 5 is tack coat.
Embodiment
The present invention's material and facility used is current material and equipment.
As shown in Figure 1, solar cell backboard provided by the invention comprises outer weathering layer 1 successively, barrier layer 2, structural reinforcing layer 3, interior weathering layer 4 and tack coat 5; Described outer weathering layer 1 is the fluorine film; The material of described barrier layer 2 is polyvinylidene chloride or ethylene/vinyl alcohol copolymer; The material of described structural reinforcing layer 3 and interior weathering layer 4 comprises PETG; Described tack coat 5 is polyvinyl butyral resin or ethylene-vinyl acetate copolymer.
The preparation method of solar cell backboard provided by the invention comprises the steps:
(1) mixed material with each layer carries out respectively fusion plastification simultaneously, plastifies good melt and enters casting mold by distributor and extrude the composite membrane that forms without the interface fusion; The processing temperature of the extruder of its China and foreign countries' weathering layer is 180-220 ℃, the processing temperature of the extruder of barrier layer is 180-200 ℃, the processing temperature of the extruder of structural reinforcing layer is 250-280 ℃, the processing temperature of the extruder of interior weathering layer is 250-280 ℃, and the processing temperature of the extruder of tack coat is 120-180 ℃; Control the thickness of each layer by the bore of mould.
(2) the 80-140 ℃ of online high-temperature shaping 2min of five layers of composite membranes process that extrudes from mould, cooling, rolling.
The testing standard of the properties of the prepared solar cell backboard of the present invention is as follows:
Hot strength and elongation at break: according to the GB/T1040-2006 standard, the INSTRON universal testing machine that adopts U.S. Instron company to produce, the hot strength of testing backboard and elongation at break.
Peel strength: according to the GB/T2790-1995 standard testing.
Moisture-vapor transmission: according to the GB/T26253-2001 standard testing, adopt the TSY-W2 water vapor permeation rate tester that backboard is tested.
The weatherability test: the PCT test is commonly referred to as pressure cooker cooking test or saturated steam test, and sample, was placed 60 hours, afterwards the elongation at break of specimen under 100% relative humidity environment at 121 ℃.
Two 85 experiments refer to sample at 85 ℃, under 85% relative humidity environment, placed 2000 hours, and the LAB value of specimen afterwards, wherein b value represent the blue yellow coloured silk variation of arriving.
Puncture voltage test: according to the GB/T13542.2-2009 standard testing, adopt the breakdown strength tester that backboard is tested.
Partial discharge is pressed test: according to the IEC60664-1-2007 standard testing, adopt GYJF-II instrument for measuring partial discharge to test.
Material content percentage in following embodiment is weight percentage.
Prepare according to the method described above solar cell backboard, gross thickness is 330 μ m.Described outer weathering layer accounts for composite membrane (namely, solar cell backboard) 10% of thickness, barrier layer accounts for 8% of composite membrane gross thickness, and the structural reinforcing layer accounts for 62% of composite membrane gross thickness, interior weathering layer accounts for 15% of composite membrane gross thickness, and tack coat accounts for 5% of composite membrane gross thickness.Wherein, described outer weathering layer is the PVF film; Described barrier layer is the PVDC film; Described structural reinforcing layer comprises 88% PET section, and inherent viscosity is 0.7dL/g, and 9% barium sulfate particle, particle diameter are 1 μ m, 3% epoxy polymer; Described interior weathering layer comprises 95% PET section, 5% haplotype carbodiimides; Described tack coat is the PVB film.Gained backboard correlated performance sees Table 1.
Prepare according to the method described above solar cell backboard, gross thickness is 330 μ m.Described outer weathering layer accounts for 12% of composite membrane thickness, and barrier layer accounts for 7% of composite membrane gross thickness, and the structural reinforcing layer accounts for 58% of composite membrane gross thickness, and interior weathering layer accounts for 16% of composite membrane gross thickness, and tack coat accounts for 7% of composite membrane gross thickness.Wherein, described outer weathering layer is the PVF film; Described barrier layer is the PVDC film; Described structural reinforcing layer comprises 90% PET section, and inherent viscosity is 0.7dL/g, and 6% barium sulfate particle, particle diameter are 1.5 μ m, 4% epoxy polymer; Described interior weathering layer comprises 95% PET section, 5% haplotype carbodiimides; Described tack coat is the PVB film.Gained backboard correlated performance sees Table 1.
Prepare according to the method described above solar cell backboard, gross thickness is 350 μ m.Described outer weathering layer accounts for 15% of composite membrane thickness, and barrier layer accounts for 5% of composite membrane gross thickness, and the structural reinforcing layer accounts for 63% of composite membrane gross thickness, and interior weathering layer accounts for 12% of composite membrane gross thickness, and tack coat accounts for 5% of composite membrane gross thickness.Wherein, described outer weathering layer is pvdf membrane; Described barrier layer is the PVDC film; Described structural reinforcing layer comprises 91% PET section, and inherent viscosity is 0.7dL/g, and 5% TiO 2 particles, particle diameter are 0.3 μ m, 4% epoxy polymer; Described interior weathering layer comprises 95% PET section, 5% polycarbodiimide; Described tack coat is eva film.Gained backboard correlated performance sees Table 1.
Prepare according to the method described above solar cell backboard, gross thickness is 340 μ m.Described outer weathering layer accounts for 18% of composite membrane thickness, and barrier layer accounts for 8% of composite membrane gross thickness, and the structural reinforcing layer accounts for 50% of composite membrane gross thickness, and interior weathering layer accounts for 16% of composite membrane gross thickness, and tack coat accounts for 8% of composite membrane gross thickness.Wherein, described outer weathering layer is pvdf membrane; Described barrier layer is the PVDC film; Described structural reinforcing layer comprises 93% PET section, and inherent viscosity is 0.8dL/g, and 4% TiO 2 particles, particle diameter are 0.3 μ m, 3% epoxy polymer; Described interior weathering layer comprises 97% PET section, 3% polycarbodiimide; Described tack coat is eva film.Gained backboard correlated performance sees Table 1.
Prepare according to the method described above solar cell backboard, gross thickness is 360 μ m.Described outer weathering layer accounts for 14% of composite membrane thickness, and barrier layer accounts for 6% of composite membrane gross thickness, and the structural reinforcing layer accounts for 61% of composite membrane gross thickness, and interior weathering layer accounts for 13% of composite membrane gross thickness, and tack coat accounts for 6% of composite membrane gross thickness.Wherein, described outer weathering layer is pvdf membrane; Described barrier layer is the PVDC film; Described structural reinforcing layer comprises 95% PET section, and inherent viscosity is 0.75dL/g, and 3% TiO 2 particles, particle diameter are 0.3 μ m, 2% epoxy polymer; Described interior weathering layer comprises 96% PET section, 4% polycarbodiimide; Described tack coat is eva film.Gained backboard correlated performance sees Table 1.
Table 1 embodiment 1-5 gained solar cell backboard performance test table
Embodiment 6
Prepare according to the method described above solar cell backboard, gross thickness is 280 μ m.Described outer weathering layer accounts for 10% of composite membrane thickness, and barrier layer accounts for 5% of composite membrane gross thickness, and the structural reinforcing layer accounts for 70% of composite membrane gross thickness, and interior weathering layer accounts for 10% of composite membrane gross thickness, and tack coat accounts for 5% of composite membrane gross thickness.Wherein, described outer weathering layer is the PVF film; Described barrier layer is the PVDC film; Described structural reinforcing layer comprises 85% PET section, and inherent viscosity is 0.7dL/g, 10% barium sulfate and the combination of TiO 2 particles (weight ratio is 1:1), and particle diameter is 1 μ m, 5% epoxy polymer; Described interior weathering layer comprises 95% PET section, 5% haplotype carbodiimides; Described tack coat is the PVB film.Gained backboard correlated performance sees Table 2.
Embodiment 7
Prepare according to the method described above solar cell backboard, gross thickness is 400 μ m.Described outer weathering layer accounts for 15% of composite membrane thickness, and barrier layer accounts for 10% of composite membrane gross thickness, and the structural reinforcing layer accounts for 50% of composite membrane gross thickness, and interior weathering layer accounts for 15% of composite membrane gross thickness, and tack coat accounts for 10% of composite membrane gross thickness.Wherein, described outer weathering layer is pvdf membrane; Described barrier layer is the EVOH film; Described structural reinforcing layer comprises 95% PET section, and inherent viscosity is 0.8dL/g, and 3% barium sulfate particle, particle diameter are 1.5 μ m, 2% epoxy polymer; Described interior weathering layer comprises 99% PET section, 1% haplotype carbodiimides; Described tack coat is the PVB film.Gained backboard correlated performance sees Table 2.
Embodiment 8
Prepare according to the method described above solar cell backboard, gross thickness is 300 μ m.Described outer weathering layer accounts for 20% of composite membrane thickness, and barrier layer accounts for 7% of composite membrane gross thickness, and the structural reinforcing layer accounts for 53% of composite membrane gross thickness, and interior weathering layer accounts for 12% of composite membrane gross thickness, and tack coat accounts for 8% of composite membrane gross thickness.Wherein, described outer weathering layer is the PVF film; Described barrier layer is the PVDC film; Described structural reinforcing layer comprises 98% PET section, and inherent viscosity is 1.2dL/g, and 1% TiO 2 particles, particle diameter are 0.3 μ m, 1% epoxy polymer; Described interior weathering layer comprises 90% PET section, 10% polycarbodiimide; Described tack coat is the PVB film.Gained backboard correlated performance sees Table 2.
Embodiment 9
Prepare according to the method described above solar cell backboard, gross thickness is 340 μ m.Described outer weathering layer accounts for 12% of composite membrane thickness, and barrier layer accounts for 8% of composite membrane gross thickness, and the structural reinforcing layer accounts for 55% of composite membrane gross thickness, and interior weathering layer accounts for 20% of composite membrane gross thickness, and tack coat accounts for 5% of composite membrane gross thickness.Wherein, described outer weathering layer is pvdf membrane; Described barrier layer is the EVOH film; Described structural reinforcing layer comprises 88% PET section, and inherent viscosity is 0.8dL/g, and 8% barium sulfate particle, particle diameter are 1.3 μ m, 4% epoxy polymer; Described interior weathering layer comprises 98% PET section, 2% polycarbodiimide; Described tack coat is eva film.Gained backboard correlated performance sees Table 2.
Embodiment 10
Prepare according to the method described above solar cell backboard, gross thickness is 360 μ m.Described outer weathering layer accounts for 15% of composite membrane thickness, and barrier layer accounts for 5% of composite membrane gross thickness, and the structural reinforcing layer accounts for 60% of composite membrane gross thickness, and interior weathering layer accounts for 15% of composite membrane gross thickness, and tack coat accounts for 5% of composite membrane gross thickness.Wherein, described outer weathering layer is the PVF film; Described barrier layer is the PVDC film; Described structural reinforcing layer comprises 95% PET section, and inherent viscosity is 0.75dL/g, and 3% TiO 2 particles, particle diameter are 0.3 μ m, 2% epoxy polymer; Described interior weathering layer comprises 92% PET section, 8% polycarbodiimide; Described tack coat is eva film.Gained backboard correlated performance sees Table 2.
Table 2 embodiment 6-10 gained solar cell backboard performance test table
Embodiment 11
Prepare according to the method described above solar cell backboard, gross thickness is 380 μ m.Described outer weathering layer accounts for 10% of composite membrane thickness, and barrier layer accounts for 10% of composite membrane gross thickness, and the structural reinforcing layer accounts for 55% of composite membrane gross thickness, and interior weathering layer accounts for 15% of composite membrane gross thickness, and tack coat accounts for 10% of composite membrane gross thickness.Wherein, described outer weathering layer is the PVF film; Described barrier layer is the PVDC film; Described structural reinforcing layer comprises 88% PET section, and inherent viscosity is 0.7dL/g, 8% barium sulfate and the combination of TiO 2 particles (weight ratio is 1:1), and particle diameter is 1 μ m, 4% epoxy polymer; Described interior weathering layer comprises 95% PET section, 5% haplotype carbodiimides; Described tack coat is eva film.Gained backboard correlated performance sees Table 3.
Embodiment 12
Prepare according to the method described above solar cell backboard, gross thickness is 300 μ m.Described outer weathering layer accounts for 10% of composite membrane thickness, and barrier layer accounts for 5% of composite membrane gross thickness, and the structural reinforcing layer accounts for 60% of composite membrane gross thickness, and interior weathering layer accounts for 15% of composite membrane gross thickness, and tack coat accounts for 10% of composite membrane gross thickness.Wherein, described outer weathering layer is pvdf membrane; Described barrier layer is the EVOH film; Described structural reinforcing layer comprises 90% PET section, and inherent viscosity is 0.7dL/g, and 6% barium sulfate particle, particle diameter are 1.5 μ m, 4% epoxy polymer; Described interior weathering layer comprises 96% PET section, 4% haplotype carbodiimides; Described tack coat is eva film.Gained backboard correlated performance sees Table 3.
Embodiment 13
Prepare according to the method described above solar cell backboard, gross thickness is 310 μ m.Described outer weathering layer accounts for 13% of composite membrane thickness, and barrier layer accounts for 7% of composite membrane gross thickness, and the structural reinforcing layer accounts for 60% of composite membrane gross thickness, and interior weathering layer accounts for 12% of composite membrane gross thickness, and tack coat accounts for 8% of composite membrane gross thickness.Wherein, described outer weathering layer is the PVF film; Described barrier layer is the PVDC film; Described structural reinforcing layer comprises 96% PET section, and inherent viscosity is 1.0dL/g, and 3% TiO 2 particles, particle diameter are 0.3 μ m, 1% epoxy polymer; Described interior weathering layer comprises 93% PET section, 7% polycarbodiimide; Described tack coat is eva film.Gained backboard correlated performance sees Table 3.
Embodiment 14
Prepare according to the method described above solar cell backboard, gross thickness is 340 μ m.Described outer weathering layer accounts for 15% of composite membrane thickness, and barrier layer accounts for 10% of composite membrane gross thickness, and the structural reinforcing layer accounts for 50% of composite membrane gross thickness, and interior weathering layer accounts for 20% of composite membrane gross thickness, and tack coat accounts for 5% of composite membrane gross thickness.Wherein, described outer weathering layer is pvdf membrane; Described barrier layer is the EVOH film; Described structural reinforcing layer comprises 92% PET section, and inherent viscosity is 0.8dL/g, and 6% barium sulfate particle, particle diameter are 1.3 μ m, 2% epoxy polymer; Described interior weathering layer comprises 97% PET section, 3% polycarbodiimide; Described tack coat is eva film.Gained backboard correlated performance sees Table 3.
Embodiment 15
Prepare according to the method described above solar cell backboard, gross thickness is 360 μ m.Described outer weathering layer accounts for 14% of composite membrane thickness, and barrier layer accounts for 6% of composite membrane gross thickness, and the structural reinforcing layer accounts for 55% of composite membrane gross thickness, and interior weathering layer accounts for 17% of composite membrane gross thickness, and tack coat accounts for 8% of composite membrane gross thickness.Wherein, described outer weathering layer is the PVF film; Described barrier layer is the PVDC film; Described structural reinforcing layer comprises 95% PET section, and inherent viscosity is 0.75dL/g, and 3% TiO 2 particles, particle diameter are 0.3 μ m, 2% epoxy polymer; Described interior weathering layer comprises 92% PET section, 8% polycarbodiimide; Described tack coat is eva film.Gained backboard correlated performance sees Table 3.
Table 3 embodiment 11-15 gained solar cell backboard performance test table
Comparative Examples 1
Prepare according to the method described above solar cell backboard, gained back plate thickness and layers of material as described in Example 1, different is that barrier material is selected polyamide (PA).Correlated performance sees Table 4.
Comparative Examples 2
Prepare according to the method described above solar cell backboard, gained back plate thickness and layers of material as described in Example 2, different is, structural reinforcing layer and interior weathering layer material selection polypropylene (PP), correlated performance sees Table 4.
Comparative Examples 3
Prepare according to the method described above solar cell backboard, gained back plate thickness and layers of material as described in Example 3, different is, bonding layer material is selected polyethyl methacrylate, correlated performance sees Table 4.
Comparative Examples 4
The preparation solar cell backboard, gained back plate thickness and layers of material as described in Example 4, each layer of backboard by the hot pressing compoiste adhering together, correlated performance sees Table 4.
Table 4 Comparative Examples 1-5 gained solar cell backboard performance test table
To as shown in table 4 performance test data, the present invention makes backboard have weather resistance and mechanical property preferably by the choice and optimization to solar cell backboard layers of material and component proportioning as table 1; The adhesive layer of solar cell backboard provided by the invention can with the solar energy encapsulating material in PUR well be bonded together; make the solar energy backboard play lasting protective effect; and solar cell backboard adopts the five-layer co-squeezing one step technique; simplified successively compound process route, easy operating.
The above is only preferred embodiment of the present invention, is not for limiting protection scope of the present invention.Every equalization that content is done according to the present invention changes and modifies, and all is encompassed in the scope of the claims of the present invention.
Claims (3)
1. a solar cell backboard, is characterized in that, described solar cell backboard comprises outer weathering layer successively, barrier layer, structural reinforcing layer, interior weathering layer and tack coat.
2. solar cell backboard according to claim 1, it is characterized in that, described solar cell backboard thickness is 280-400 μ m, and the thickness of its China and foreign countries' weathering layer, barrier layer, structural reinforcing layer, interior weathering layer and tack coat accounts for respectively 10-20%, 5-10%, 50-70%, 10-20% and the 5-10% of solar cell backboard thickness.
3. solar cell backboard according to claim 1, is characterized in that, described solar cell backboard is the five-layer co-squeezing structure.
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| CN201320232788XU CN203277446U (en) | 2013-05-02 | 2013-05-02 | Solar battery backboard |
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| CN201320232788XU CN203277446U (en) | 2013-05-02 | 2013-05-02 | Solar battery backboard |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762215A (en) * | 2016-04-13 | 2016-07-13 | 黄广明 | Monocrystalline silicon solar cell module |
| CN110690307A (en) * | 2019-10-30 | 2020-01-14 | 杭州福斯特应用材料股份有限公司 | Transparent back plate for photovoltaic module and preparation method thereof |
-
2013
- 2013-05-02 CN CN201320232788XU patent/CN203277446U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762215A (en) * | 2016-04-13 | 2016-07-13 | 黄广明 | Monocrystalline silicon solar cell module |
| CN110690307A (en) * | 2019-10-30 | 2020-01-14 | 杭州福斯特应用材料股份有限公司 | Transparent back plate for photovoltaic module and preparation method thereof |
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