CN202319195U - Solar cell backplane - Google Patents
Solar cell backplane Download PDFInfo
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- CN202319195U CN202319195U CN201120476242XU CN201120476242U CN202319195U CN 202319195 U CN202319195 U CN 202319195U CN 201120476242X U CN201120476242X U CN 201120476242XU CN 201120476242 U CN201120476242 U CN 201120476242U CN 202319195 U CN202319195 U CN 202319195U
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Abstract
The utility model relates to the technical field of solar photovoltaic cells, particularly to a solar cell backplane. In order to overcome the defects of high production cost and complex production technologies of the existing solar cell backplane, the utility model provides a solar cell backplane. The solar cell backplane provided by the utility model successively comprises a weathering layer, a structure enhancement layer and a barrier layer. The structure only has three layers, but the weatherability and the barrier property are good, the production cost is low, and the solar cell backplane is free of fluorine element and can not cause environmental pollution.
Description
Technical field
The utility model relates to the solar-energy photo-voltaic cell technical field, especially relates to a kind of solar cell backboard.
Background technology
Solar energy has received people's extensive concern as a kind of cleaning, pollution-free, the inexhaustible energy.Solar cell is the effective tool that directly changes into solar energy electric energy.Because solar cell needs for a long time at the outdoor rainwater that receives, the erosion of natural causes such as ultraviolet ray is very unfavorable to the service life of cell panel.So how to improve the weatherability of solar cell backboard, be the emphasis of current research.Current main flow backboard be the backboard of the THV/PET/EVA structure that contains THV (hexafluoropropylene (HFP)/tetrafluoroethylene (TFE)-vinylidene) fluororesin of TPT and the independent research of Japanese 3M company of Isovolta company in TPE, the Europe of U.S. Madico company.Also there are many companies to adopt PVDF (vinylidene), ETFE (ethylene tetrafluoroethylene copolymer) to wait some fluorine materials to prepare solar cell backboard (can be called for short the solar energy backboard); But see from structure; Basically all be that TPT or TPE are main; Because the fluorine material surface energy is very low, is difficult to and polyester binding.Therefore need accomplish the surface modification of fluorine film, conventional method is at polyester film surface coated binding agent, and obviously technology is complicated, the difficult control of the thickness of tack coat.In addition, the fluorine material not only costs an arm and a leg as weathering layer but also can pollute environment; In addition, use tack coat to occur lamination easily for a long time.
The solar energy industry of China is risen later, but development rapidly, and the research of solar cell backboard has also been obtained very big achievement.But aspect technology, still there is not too big breakthrough.
The application number of Shanghai Hiuv Electronic Technology Co., Ltd. is 200810204220.0 (publication No.: CN101431108A; Date of publication: one Chinese patent application on May 13rd, 2009) has been reported a kind of solar energy backboard, it is characterized in that this backboard is made up of weather-proof and aqueous vapor separation layer (10-40 μ m), ultraviolet isolating layer (15-100 μ m), enhancement layer (125-250 μ m) and reflection and tack coat (20-100 μ m).Wherein weathering layer is the fluorine material, and enhancement layer is a polyester film, and the reflecting layer is a polythene material.The method of MULTILAYER COMPOSITE that adopts this backboard can effectively improve the barrier of backboard, but layer with layer between still be bonding with binding agent, and weathering layer also still usefulness be the fluorine material.So production cost is higher, technology difficulty is bigger, and environment is had pollution and is unfavorable for long-time use.
The application number of material limited company of the high section of Nanjing Na Quan is 200910167211.3 (publication No.: CN101997038A; Date of publication: one Chinese patent application on March 30th, 2011) has also been reported a kind of sun backboard; At least one side of this backboard base material is provided with fluorine material weathering layer; The opposite side of base material is provided with the inorganic material barrier layer, adopts tack coat settable cementitious between layer and the layer.This backboard still can't be avoided improving weatherability and tack coat bond weathering layer and base material with the fluorine material.Though simplified the compound number of plies, still need binding agent between the layer, therefore also exist technology, cost problem and service life problem.
The application number of too red science and technology (Kunshan) Co., Ltd is 201020544571.9 (patent announcement number: CN201804884U; The day for announcing: one Chinese patent application on April 20th, 2011) has been reported equally and has a kind ofly been adopted barrier property that the plural layers composite methods improves backboard and improve weatherability with the fluorine material, but had the problem in the above patent application equally.
Summary of the invention
Higher in order to solve existing solar cell backboard production cost, the defective of complex manufacturing.The present invention provides a kind of solar cell backboard and preparation method thereof.
Compared with prior art, solar cell backboard long service life provided by the invention does not contain fluorine element, has saved production cost, can not cause environmental pollution yet, and weatherability and barrier are better; The preparation method of solar cell backboard provided by the invention comprises three-layer co-extrudedly going out and stretch processes that this method production technology is simple, is easy to realize, production efficiency is high.
In order to achieve the above object, the invention provides following technical proposals:
A kind of solar cell backboard, its feature are that said solar cell backboard comprises weathering layer, structure enhancement layer and barrier layer successively.
Further, the component of said weathering layer comprises polyester material and function additive; The component of said structure enhancement layer comprises polyester material, inorganic pigment and function additive; The component of said barrier layer comprises resin material and function additive.
Further, the polyester material that comprises of said weathering layer is PETG-1,4 cyclohexanedimethanoester ester (PETG); The polyester material that said structure enhancement layer comprises is PETG (PET); The resin material that said barrier layer comprises is ethylene-vinyl alcohol copolymer (EVOH).
Said PETG-1,4 cyclohexanedimethanoester ester (PETG) density is 1.29-1.40g/cm
3, relative molecular weight is 15000-18000, inherent viscosity is 0.52-0.62dl/g.PETG-1,4 cyclohexanedimethanoester ester (PETG) has very outstanding weatherability, can keep the toughness of material for a long time, prevents xanthochromia, and the PETG chemical property is stable, is the excellent material of weathering layer therefore.
Described PETG (PET) is biaxially oriented polyester film (BOPET), and the relative molecular weight of used PET section is 16000-18000, and density is 1.38-1.40g/cm
3, inherent viscosity is 0.52-0.65dl/g, vitrification point is 82 ℃.
The relative molecular weight of said ethylene-vinyl alcohol copolymer (EVOH) is between 12000-15000.
Further, said function additive comprises antioxidant and uvioresistant stabilizing agent, and said inorganic pigment is a white inorganic pigment.
Above-mentioned antioxidant is aromatics antioxidant, can be the combination of a kind of in diphenylamines, p-phenylenediamine (PPD), EEDQ and derivative thereof or the compound or at least two kinds.
Above-mentioned uvioresistant stabilizing agent is salicylate class, benzophenone class, benzotriazole, group-substituted acrylonitrile, triazines, hindered amines or its combination.Can be phenyl salicytate, Ultraviolet Absorber UV-P, ultra-violet absorber UV-O, ultra-violet absorber UV-9, ultraviolet absorbent UV-531, ultra-violet absorber UVP-327, light stabilizer-744 or its combination.
Above-mentioned white inorganic pigment is one or more in titanium white powder, barium sulfate, calcium carbonate, silica, the aluminium oxide, and preferable said white inorganic pigment is titanium white powder or barium sulfate.The particle diameter of said white inorganic pigment can be 0.2-0.3um.
Further, in the said weathering layer: said antioxidant accounts for the 1%-5% of said weathering layer gross weight, the 0.5%-2% of the said weathering layer gross weight of said uvioresistant stabilizer comprises; In the said structure enhancement layer: said antioxidant accounts for the 1%-5% of said structure enhancement layer gross weight; The 0.5%-2% of the said structure enhancement layer of said uvioresistant stabilizer comprises gross weight, said white inorganic pigment accounts for the 10%-30% of said structure enhancement layer gross weight; In the said barrier layer: said antioxidant accounts for the 1%-5% of said barrier layer gross weight, the 0.5%-2% of the said barrier layer gross weight of said uvioresistant stabilizer comprises.
The thickness of said weathering layer, structure enhancement layer, barrier layer can be regulated as required, as long as within die head caliber size scope.
Further, said ethylene-vinyl alcohol copolymer contains the ethene that weight percentage is 20%-40%.Ethylene contents is too high to help processing, but is unfavorable for the barrier of this material; Ethylene contents is crossed low then opposite.
Further, the thickness of said weathering layer is the 10-100 micron, and the thickness of said structure enhancement layer is the 150-350 micron, and the thickness of said barrier layer is the 10-100 micron.
The present invention also provides a kind of preparation method of solar cell backboard, and said preparation method comprises the steps:
(1), the each component of said weathering layer mixes, and processes mixed plastic A; The each component of said structure enhancement layer mixes, and processes mixed plastic B; The each component of said barrier layer mixes, and processes mixed plastic C; The each component of above-mentioned each layer can mix through high mixer respectively.
(2), the prepared three kinds of mixed plastics of step (1) are carried out fusion plastification respectively, the melt of gained gets into the three-layer co-extruded die head that goes out machine, coex composite membranes through distributor;
(3), with step (2) gained laminated film, through cooling, casting sheet, stretch processes, make three-layer co-extruded film, cut said film, make described solar cell backboard.
Said laminated film carries out biaxial tension in static stretching-machine, draft temperature is controlled at 80-120 ℃.
The present invention also provides a kind of solar cell, comprises above-mentioned solar cell backboard.
The present invention also provides a kind of solar cell, comprises solar cell backboard, and said solar cell backboard adopts above-mentioned preparation method to be prepared from.
Further, the thickness of said weathering layer is the 40-60 micron, and the thickness of said structure enhancement layer is the 200-250 micron, and the thickness of said barrier layer is the 40-60 micron.
Further, the thickness of said weathering layer is the 10-50 micron, and the thickness of said structure enhancement layer is the 150-250 micron, and the thickness of said barrier layer is the 10-50 micron.
Further, the thickness of said weathering layer is the 50-100 micron, and the thickness of said structure enhancement layer is the 250-350 micron, and the thickness of said barrier layer is the 50-100 micron.
Further, the thickness of said weathering layer is the 10-50 micron, and the thickness of said structure enhancement layer is the 150-350 micron, and the thickness of said barrier layer is the 50-100 micron.
Further, the thickness of said weathering layer is the 20-80 micron, and the thickness of said structure enhancement layer is the 150-250 micron, and the thickness of said barrier layer is the 50-100 micron.
Further, the thickness of said weathering layer is the 20-80 micron, and the thickness of said structure enhancement layer is the 180-300 micron, and the thickness of said barrier layer is the 20-80 micron.
Compare with existing solar cell backboard, solar cell backboard provided by the invention is a three-layer coextru-laminated film, has only three layers, and is simple in structure and help saving cost.Have no binding agent between layer and the layer, but combine, not significantly boundary between this associated methods layer and the layer through the method for fusion co-extrusion; Be not prone to lamination, help improving service life, and production technology be simple; Production efficiency is high, helps to save cost simultaneously.Do not contain fluorine element in the used weathering layer of this backboard, not only save production cost greatly, and can not pollute yet environment.Solar cell backboard provided by the invention not only has excellent weather resistance, and mechanical strength is also stable, can satisfy the instructions for use of solar energy backboard, and is significant to the solar energy industry.
The preparation method of solar cell backboard provided by the invention comprises three-layer co-extrudedly going out and stretch processes that this method production technology is simple, is easy to realize, production efficiency is high.
Description of drawings
Fig. 1 is a solar cell backboard generalized section provided by the invention;
Wherein, 1 is weathering layer, and 2 is the structure enhancement layer, and 3 is barrier layer.
The specific embodiment
Through specific embodiment solar cell backboard provided by the invention is elaborated below.
Mixed plastic adopts high mixer to mix among the present invention, and preferable, the volume of high mixer is 100L.The coextrusion of three kinds of mixed plastics is to adopt have a distributor three-layer co-extruded to go out casting machine.Between 1.2-1.6m, speed controlling is between 70-100m/min with the diameter of the cold drum of equipment in cooling, and cold bulging surface temperature control is between 30-60 ℃.Static stretching-machine is adopted in biaxial tension, and the stretching ratio of stretching-machine can be regulated as requested.Other equipment that the present invention relates to are routine instrument device.
As shown in Figure 1, solar cell backboard provided by the invention is the three-layer co-extruded film that goes out, and comprises weathering layer 1, structure enhancement layer 2 and barrier layer 3.
Among the following embodiment 1 to embodiment 27: the percentage composition of antioxidant, uvioresistant stabilizing agent and inorganic pigment is a weight percentage, respectively based on the gross weight of each layer under it (weathering layer, structure enhancement layer or barrier layer); The percentage composition of said ethene is a weight percentage, based on the weight of EVOH; The main material of said weathering layer is PETG; The main material of said structure enhancement layer is PET; The main material of said barrier layer is EVOH.The particle diameter of said white inorganic pigment can be 0.2-0.3um.
Embodiment 1:
As shown in Figure 1, weathering layer 1, thickness are 20 microns, and wherein the addition of antioxidant diphenylamines is 1%, and uvioresistant stabilizing agent UV-P addition is 0.5%, and all the other are PETG; Structure enhancement layer 2, thickness are 150 microns, and titanium white powder Chinese white addition is 10%, and antioxidant diphenylamines addition is 1%, and uvioresistant stabilizing agent UV-P addition is 0.5%, and all the other are PET; Barrier layer 3, thickness are 10 microns, and ethylene contents is 20%, and antioxidant diphenylamines addition is 1%, and uvioresistant stabilizing agent UV-P addition is 0.5%, and all the other are EVOH.The particle diameter of said titanium white powder is 0.2um.Relevant parameter is seen table 1.
Concrete preparation method is following:
(1), the each component of said weathering layer mixes through the high mixer of 100L, processes mixed plastic A; The each component of said structure enhancement layer mixes through the high mixer of 100L, processes mixed plastic B; The each component of said barrier layer mixes through the high mixer of 100L, processes mixed plastic C;
(2), the prepared three kinds of mixed plastics of step (1) are added three double screw extruders simultaneously respectively, carry out fusion plastification respectively, the melt of gained gets into the three-layer co-extruded die head that goes out machine, coex composite membranes through distributor;
(3), step (2) gained laminated film, through cooling, casting sheet, stretch processes, make three-layer co-extruded film, cut said film, make described solar cell backboard.
Laminated film biaxial tension in static stretching-machine, draft temperature are 80 ℃.
Embodiment 2:
As shown in Figure 1, weathering layer 1, thickness are 30 microns, and wherein the addition of antioxidant diphenylamines is 2%, and uvioresistant stabilizing agent UV-P addition is 1%, and all the other are PETG; Structure enhancement layer 2, thickness are 200 microns, and titanium white powder Chinese white addition is 20%, and antioxidant diphenylamines addition is 2%, and uvioresistant stabilizing agent UV-P addition is 1%, and all the other are PET; Barrier layer 3, thickness are 20 microns, and ethylene contents is 30%, and antioxidant diphenylamines addition is 2%, and uvioresistant stabilizing agent UV-P addition is 1%, and all the other are EVOH.The particle diameter of said titanium white powder is 0.3um.Relevant parameter is seen table 1.
Concrete preparation method is following:
The draft temperature of static stretching-machine is 85 ℃, and other step is with embodiment 1.
Embodiment 3:
As shown in Figure 1, weathering layer 1, thickness are 50 microns, and wherein the addition of antioxidant diphenylamines is 3%, and uvioresistant stabilizing agent UV-P addition is 1.5%, and all the other are PETG; Structure enhancement layer 2, thickness are 250 microns, and titanium white powder Chinese white addition is 30%, and antioxidant diphenylamines addition is 3%, and uvioresistant stabilizing agent UV-P addition is 1.5%, and all the other are PET; Barrier layer 3, thickness are 50 microns, and ethylene contents is 40%, and antioxidant is 3% to benzene two ammonium additions, and uvioresistant stabilizing agent UV-531 addition is 1.5%, and all the other are EVOH.The particle diameter of said titanium white powder can be 0.25um.Relevant parameter is seen table 1.
Concrete preparation method is following:
The preparation method is with embodiment 1, and wherein the draft temperature of static stretching-machine is 100 ℃.
Table 1
Annotate: the MD in table 1 to the table 5 refers to that vertically TD refers to laterally.
Embodiment 4:
As shown in Figure 1, weathering layer 1, thickness are 100 microns, and wherein antioxidant p-phenylene diamine derivative's addition is 5%, and uvioresistant stabilizing agent UV-P addition is 2%, and all the other are PETG; Structure enhancement layer 2, thickness are 350 microns, and barium sulfate Chinese white addition is 30%, and antioxidant p-phenylene diamine derivative addition is 5%, and uvioresistant stabilizing agent UV-P addition is 2%, and all the other are PET; Barrier layer 3, thickness are 100 microns, and ethylene contents is 40%, and antioxidant diphenylamines addition is 5%, and uvioresistant stabilizing agent UV-P addition is 2%, and all the other are EVOH.Relevant parameter is seen table 2.
The preparation method is with embodiment 3.
Embodiment 5:
As shown in Figure 1, weathering layer 1, thickness are 55 microns, and wherein the addition of antioxidant diphenylamines is 3%, and uvioresistant stabilizing agent UV-P addition is 1.2%, and all the other are PETG; Structure enhancement layer 2, thickness are 250 microns, and calcium carbonate Chinese white addition is 20%, and antioxidant p-phenylenediamine (PPD) addition is 3%, and uvioresistant stabilizing agent UV-P addition is 1.2%, and all the other are PET; Barrier layer 3, thickness are 55 microns, and ethylene contents is 30%, and antioxidant diphenylamines addition is 3%, and uvioresistant stabilizing agent UV-P addition is 1.2%, and all the other are EVOH.Relevant parameter is seen table 2.
The preparation method is with embodiment 1, and wherein the draft temperature of static stretching-machine is 110 ℃.
Embodiment 6:
As shown in Figure 1, weathering layer 1, thickness are 10 microns, and wherein the addition of antioxidant diphenylamines is 1%, and uvioresistant stabilizing agent UV-P addition is 0.5%, and all the other are PETG; Structure enhancement layer 2, thickness are 150 microns, and titanium white powder Chinese white addition is 10%, and antioxidant diphenylamines addition is 1%, and uvioresistant stabilizing agent UVP-327 addition is 0.5%, and all the other are PET; Barrier layer 3, thickness are 10 microns, and ethylene contents is 20%, and antioxidant diphenylamines addition is 1%, and uvioresistant stabilizing agent UV-P addition is 0.5%, and all the other are EVOH.Relevant parameter is seen table 2.
The preparation method is with embodiment 1, and wherein the draft temperature of static stretching-machine is 100 ℃.
Embodiment 7:
As shown in Figure 1, weathering layer 1, thickness are 20 microns, and wherein the addition of antioxidant dihydroquindine derivates is 1%, and uvioresistant stabilizing agent UV-P addition is 0.5%, and all the other are PETG; Structure enhancement layer 2, thickness are 180 microns, and barium sulfate Chinese white addition is 10%, and antioxidant dihydroquindine derivates addition is 1%, and light stabilizer-744 addition is 0.5%, and all the other are PET; Barrier layer 3, thickness are 20 microns, and ethylene contents is 25%, and antioxidant diphenylamines addition is 1%, and uvioresistant stabilizing agent UV-P addition is 0.5%, and all the other are EVOH.Relevant parameter is seen table 2.
The preparation method is with embodiment 6.
Embodiment 8:
As shown in Figure 1, weathering layer 1, thickness are 80 microns, and wherein the addition of antioxidant diphenylamines is 5%, and uvioresistant stabilizing agent phenyl salicytate phenyl salicytate addition is 2%, and all the other are PETG; Structure enhancement layer 2, thickness are 300 microns, and titanium white powder Chinese white addition is 30%, and antioxidant diphenylamines addition is 5%, and uvioresistant stabilizing agent phenyl salicytate phenyl salicytate addition is 2%, and all the other are PET; Barrier layer 3, thickness are 80 microns, and ethylene contents is 40%, and antioxidant barium sulfate addition is 5%, and uvioresistant stabilizing agent phenyl salicytate addition is 2%, and all the other are EVOH.Relevant parameter is seen table 2.
The preparation method is with embodiment 1, and wherein the draft temperature of static stretching-machine is 120 ℃.
Embodiment 9:
As shown in Figure 1, weathering layer 1, thickness are 50 microns, and wherein the addition of antioxidant EEDQ is 3%, and uvioresistant stabilizing agent UV-P addition is 1.2%, and all the other are PETG; Structure enhancement layer 2, thickness are 240 microns, and aluminium oxide Chinese white addition is 20%, and antioxidant EEDQ addition is 3%, and uvioresistant stabilizing agent UV-P addition is 1.2%, and all the other are PET; Barrier layer 3, thickness are 50 microns, and ethylene contents is 32%, and antioxidant diphenylamines addition is 3%, and uvioresistant stabilizing agent UVP-327 addition is 1.2%, and all the other are EVOH.Relevant parameter is seen table 2.
The preparation method is with embodiment 8.
Table 2
Embodiment 10:
As shown in Figure 1, weathering layer 1, thickness are 40 microns, and wherein the addition of antioxidant diphenylamines is 1%, and uvioresistant stabilizing agent UVP-327 addition is 0.5%, and all the other are PETG; Structure enhancement layer 2, thickness are 200 microns, and titanium white powder Chinese white addition is 10%, and antioxidant diphenylamines addition is 1%, and uvioresistant stabilizing agent UVP-327 addition is 0.5%, and all the other are PET; Barrier layer 3, thickness are 40 microns, and ethylene contents is 20%, and antioxidant diphenylamines addition is 1%, and uvioresistant stabilizing agent UVP-327 addition is 0.5%, and all the other are EVOH.Relevant parameter is seen table 3.
The preparation method is with embodiment 8.
Embodiment 11:
As shown in Figure 1, weathering layer 1, thickness are 60 microns, and wherein the addition of antioxidant EEDQ is 5%, and uvioresistant stabilizing agent UV-P addition is 2%, and all the other are PETG; Structure enhancement layer 2, thickness are 250 microns, and calcium carbonate Chinese white addition is 30%, and antioxidant EEDQ addition is 5%, and uvioresistant stabilizing agent UV-P addition is 2%, and all the other are PET; Barrier layer 3, thickness are 60 microns, and ethylene contents is 40%, and antioxidant diphenylamines addition is 5%, and light stabilizer-744 addition is 2%, and all the other are EVOH.Relevant parameter is seen table 3.
The preparation method is with embodiment 1, and wherein the draft temperature of static stretching-machine is 90 ℃.
Embodiment 12:
As shown in Figure 1, weathering layer 1, thickness are 50 microns, and wherein the addition of antioxidant diphenylamines is 3%, and uvioresistant stabilizing agent UV-P addition is 1.5%, and all the other are PETG; Structure enhancement layer 2, thickness are 230 microns, and silica Chinese white addition is 20%, and antioxidant p-phenylenediamine (PPD) addition is 3%, and uvioresistant stabilizing agent UV-P addition is 1.5%, and all the other are PET; Barrier layer 3, thickness are 50 microns, and ethylene contents is 35%, and antioxidant diphenylamines addition is 3%, and uvioresistant stabilizing agent UV-P addition is 1.5%, and all the other are EVOH.Relevant parameter is seen table 3.
The preparation method is with embodiment 11.
Embodiment 13:
As shown in Figure 1, weathering layer 1, thickness are 10 microns, and wherein the addition of antioxidant p-phenylenediamine (PPD) is 1%, and uvioresistant stabilizing agent phenyl salicytate addition is 0.5%, and all the other are PETG; Structure enhancement layer 2, thickness are 150 microns, and barium sulfate Chinese white addition is 10%, and antioxidant p-phenylenediamine (PPD) addition is 1%, and uvioresistant stabilizing agent phenyl salicytate addition is 0.5%, and all the other are PET; Barrier layer 3, thickness are 10 microns, and ethylene contents is 20%, and antioxidant diphenylamines addition is 1%, and uvioresistant stabilizing agent phenyl salicytate addition is 0.5%, and all the other are EVOH.Relevant parameter is seen table 3.
The preparation method is with embodiment 11.
Embodiment 14:
As shown in Figure 1, weathering layer 1, thickness are 50 microns, and wherein the addition of antioxidant diphenylamines is 5%, and uvioresistant stabilizing agent UVP-327 addition is 2%, and all the other are PETG; Structure enhancement layer 2, thickness are 250 microns, and titanium white powder Chinese white addition is 30%, and antioxidant diphenylamines addition is 5%, and uvioresistant stabilizing agent UVP-327 addition is 2%, and all the other are PET; Barrier layer 3, thickness are 50 microns, and ethylene contents is 40%, and antioxidant diphenylamines addition is 5%, and uvioresistant stabilizing agent UVP-327 addition is 2%, and all the other are EVOH.Relevant parameter is seen table 3.
The preparation method is with embodiment 1, and wherein the draft temperature of static stretching-machine is 105 ℃.
Embodiment 15:
As shown in Figure 1, weathering layer 1, thickness are 30 microns, and wherein the addition of antioxidant diphenylamine derivatives is 3%, and uvioresistant stabilizing agent UV-O addition is 1.5%, and all the other are PETG; Structure enhancement layer 2, thickness are 200 microns, and barium sulfate Chinese white addition is 20%, and antioxidant diphenylamine derivatives addition is 3%, and uvioresistant stabilizing agent UV-O addition is 1.5%, and all the other are PET; Barrier layer 3, thickness are 30 microns, and ethylene contents is 25%, and antioxidant diphenylamine derivatives addition is 3%, and uvioresistant stabilizing agent UV-O addition is 1.5%, and all the other are EVOH.Relevant parameter is seen table 3.
The preparation method is with embodiment 1, and wherein the draft temperature of static stretching-machine is 95 ℃.
Table 3
Embodiment 16:
As shown in Figure 1, weathering layer 1, thickness are 50 microns, and wherein the addition of antioxidant p-phenylenediamine (PPD) is 1%, and uvioresistant stabilizing agent UV-531 addition is 0.5%, and all the other are PETG; Structure enhancement layer 2, thickness are 250 microns, and calcium carbonate Chinese white addition is 10%, and antioxidant p-phenylenediamine (PPD) addition is 1%, and uvioresistant stabilizing agent UV-531 addition is 0.5%, and all the other are PET; Barrier layer 3, thickness are 50 microns, and ethylene contents is 20%, and antioxidant p-phenylenediamine (PPD) addition is 1%, and uvioresistant stabilizing agent UV-531 addition is 0.5%, and all the other are EVOH.Relevant parameter is seen table 4.
The preparation method is with embodiment 14.
Embodiment 17:
As shown in Figure 1, weathering layer 1, thickness are 100 microns, and wherein the addition of antioxidant dihydroquindine derivates is 5%, and uvioresistant stabilizing agent UV-O addition is 2%, and all the other are PETG; Structure enhancement layer 2, thickness are 350 microns, and silica Chinese white addition is 30%, and antioxidant dihydroquindine derivates addition is 5%, and uvioresistant stabilizing agent UV-O addition is 2%, and all the other are PET; Barrier layer 3, thickness are 100 microns, and ethylene contents is 40%, and antioxidant dihydroquindine derivates addition is 5%, and uvioresistant stabilizing agent UV-O addition is 2%, and all the other are EVOH.Relevant parameter is seen table 4.
The preparation method is with embodiment 15.
Embodiment 18:
As shown in Figure 1, weathering layer 1, thickness are 75 microns, and wherein the addition of antioxidant EEDQ is 3%, and uvioresistant stabilizing agent phenyl salicytate addition is 1.5%, and all the other are PETG; Structure enhancement layer 2, thickness are 300 microns, and titanium white powder Chinese white addition is 20%, and antioxidant EEDQ addition is 3%, and uvioresistant stabilizing agent phenyl salicytate addition is 1.5%, and all the other are PET; Barrier layer 3, thickness are 75 microns, and ethylene contents is 35%, and antioxidant EEDQ addition is 3%, and uvioresistant stabilizing agent phenyl salicytate addition is 1.5%, and all the other are EVOH.Relevant parameter is seen table 4.
The preparation method is with embodiment 15.
Embodiment 19:
As shown in Figure 1, weathering layer 1, thickness are 10 microns, and wherein the addition of antioxidant diphenylamines is 1%, and uvioresistant stabilizing agent UV-9 addition is 0.5%, and all the other are PETG; Structure enhancement layer 2, thickness are 150 microns, and aluminium oxide Chinese white addition is 10%, and antioxidant diphenylamines addition is 1%, and uvioresistant stabilizing agent UV-9 addition is 0.5%, and all the other are PET; Barrier layer 3, thickness are 50 microns, and ethylene contents is 20%, and antioxidant diphenylamines addition is 1%, and uvioresistant stabilizing agent UV-9 addition is 0.5%, and all the other are EVOH.Relevant parameter is seen table 4.
The preparation method is with embodiment 14.
Embodiment 20:
As shown in Figure 1, weathering layer 1, thickness are 50 microns, and wherein the addition of antioxidant diphenylamines is 5%, and uvioresistant stabilizing agent UV-P addition is 2%, and all the other are PETG; Structure enhancement layer 2, thickness are 350 microns, and titanium white powder Chinese white addition is 30%, and antioxidant p-phenylenediamine (PPD) addition is 5%, and uvioresistant stabilizing agent UV-P addition is 2%, and all the other are PET; Barrier layer 3, thickness are 100 microns, and ethylene contents is 40%, and antioxidant diphenylamines addition is 5%, and uvioresistant stabilizing agent UV-P addition is 2%, and all the other are EVOH.Relevant parameter is seen table 4.
The preparation method is with embodiment 15.
Embodiment 21:
As shown in Figure 1, weathering layer 1, thickness are 30 microns, and wherein the addition of antioxidant diphenylamine derivatives is 3%, and uvioresistant stabilizing agent UV-9 addition is 1.5%, and all the other are PETG; Structure enhancement layer 2, thickness are 250 microns, and titanium white powder Chinese white addition is 20%, and antioxidant diphenylamine derivatives addition is 3%, and uvioresistant stabilizing agent UV-9 addition is 1.5%, and all the other are PET; Barrier layer 3, thickness are 75 microns, and ethylene contents is 28%, and antioxidant diphenylamine derivatives addition is 3%, and uvioresistant stabilizing agent UV-9 addition is 1.5%, and all the other are EVOH.Relevant parameter is seen table 4.
The preparation method is with embodiment 1, and wherein the draft temperature of static stretching-machine is 105 ℃.
Table 4
Embodiment 22:
As shown in Figure 1, weathering layer 1, thickness are 20 microns, and wherein the addition of antioxidant p-phenylenediamine (PPD) is 1%, and light stabilizer-744 addition is 0.5%, and all the other are PETG; Structure enhancement layer 2, thickness are 150 microns, and titanium white powder Chinese white addition is 10%, and antioxidant p-phenylenediamine (PPD) addition is 1%, and light stabilizer-744 addition is 0.5%, and all the other are PET; Barrier layer 3, thickness are 50 microns, and ethylene contents is 20%, and antioxidant diphenylamines addition is 1%, and light stabilizer-744 addition is 0.5%, and all the other are EVOH.Relevant parameter is seen table 5.
The preparation method is with embodiment 21.
Embodiment 23:
As shown in Figure 1, weathering layer 1, thickness are 80 microns, and wherein the addition of antioxidant diphenylamines is 5%, and uvioresistant stabilizing agent UV-P addition is 2%, and all the other are PETG; Structure enhancement layer 2, thickness are 250 microns, and titanium white powder Chinese white addition is 30%, and antioxidant diphenylamines addition is 5%, and uvioresistant stabilizing agent UV-P addition is 2%, and all the other are PET; Barrier layer 3, thickness are 100 microns, and ethylene contents is 40%, and antioxidant diphenylamines addition is 5%, and uvioresistant stabilizing agent UV-P addition is 2%, and all the other are EVOH.Relevant parameter is seen table 5.
The preparation method is with embodiment 21.
Embodiment 24:
As shown in Figure 1, weathering layer 1, thickness are 50 microns, and wherein the addition of antioxidant EEDQ is 3%, and uvioresistant stabilizing agent UV-P addition is 1.5%; Structure enhancement layer 2, thickness are 200 microns, and barium sulfate Chinese white addition is 20%, and antioxidant EEDQ addition is 3%, and uvioresistant stabilizing agent UV-P addition is 1.5%; Barrier layer 3, thickness are 75 microns, and ethylene contents is 35%, and antioxidant diphenylamines addition is 3%, and uvioresistant stabilizing agent UV-P addition is 1.5%.Relevant parameter is seen table 5.
The preparation method is with embodiment 11.
Embodiment 25:
As shown in Figure 1, weathering layer 1, thickness are 30 microns, and wherein the addition of antioxidant diphenylamines is 2%, and uvioresistant stabilizing agent UV-P addition is 1%; Structure enhancement layer 2, thickness are 180 microns, and barium sulfate Chinese white addition is 15%, and antioxidant diphenylamines addition is 2%, and uvioresistant stabilizing agent UV-P addition is 1%; Barrier layer 3, thickness are 70 microns, and ethylene contents is 25%, and antioxidant diphenylamines addition is 2%, and uvioresistant stabilizing agent UV-P addition is 1%.Relevant parameter is seen table 5.
The preparation method is with embodiment 15.
Embodiment 26:
As shown in Figure 1, weathering layer 1, thickness are 40 microns, and wherein the addition of antioxidant EEDQ is 4%, and uvioresistant stabilizing agent UV-P addition is 1.8%; Structure enhancement layer 2, thickness are 200 microns, and titanium white powder Chinese white addition is 20%, and antioxidant diphenylamines addition is 4%, and uvioresistant stabilizing agent UV-P addition is 1.8%; Barrier layer 3, thickness are 50 microns, and ethylene contents is 35%, and antioxidant diphenylamines addition is 4%, and uvioresistant stabilizing agent UV-P addition is 1.8%.Relevant parameter is seen table 5.
The preparation method is with embodiment 1.
Embodiment 27:
As shown in Figure 1, weathering layer 1, thickness are 70 microns, and wherein the addition of antioxidant diphenylamines is 2%, and uvioresistant stabilizing agent UV-P addition is 1.2%; Structure enhancement layer 2, thickness are 250 microns, and titanium white powder Chinese white addition is 25%, and antioxidant diphenylamines addition is 2%, and uvioresistant stabilizing agent UV-P addition is 1.2%; Barrier layer 3, thickness are 60 microns, and ethylene contents is 40%, and antioxidant diphenylamines addition is 2%, and uvioresistant stabilizing agent UV-P addition is 1.2%.Relevant parameter is seen table 5.
The preparation method is with embodiment 3.
Table 5
Can find out the 1-5 from table, three-layer co-extruded solar cell backboard provided by the invention on mechanical property with compare with the backboard of binding agent bonding more outstanding, explain layer and layer between adhere highly stable; On peel strength, remain basically stable, explain that bond vitrified can substitute the binding agent bonding fully, plays the effect of saving production cost with backboard with binding agent.In addition, on the steam transmitance, can find,, not influence the steam transmitance though the three-layer co-extruded backboard number of plies is few, simple in structure.So see from above performance parameter, not only technology is simple for three-layer co-extruded solar cell backboard provided by the invention, and is with low cost, and stable and reliable for performance, can substitute the backboard that tradition is leaned on the binding agent bonding fully.
The above is merely preferred embodiment of the present invention, is not to be used to limit 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 claim of the present invention.
Claims (8)
1. a solar cell backboard is characterized in that, said solar cell backboard comprises weathering layer, structure enhancement layer and barrier layer successively.
2. a solar cell backboard as claimed in claim 1 is characterized in that, the thickness of said weathering layer is the 10-100 micron, and the thickness of said structure enhancement layer is the 150-350 micron, and the thickness of said barrier layer is the 10-100 micron.
3. a solar cell backboard as claimed in claim 1 is characterized in that, the thickness of said weathering layer is the 40-60 micron, and the thickness of said structure enhancement layer is the 200-250 micron, and the thickness of said barrier layer is the 40-60 micron.
4. a solar cell backboard as claimed in claim 1 is characterized in that, the thickness of said weathering layer is the 10-50 micron, and the thickness of said structure enhancement layer is the 150-250 micron, and the thickness of said barrier layer is the 10-50 micron.
5. a solar cell backboard as claimed in claim 1 is characterized in that, the thickness of said weathering layer is the 50-100 micron, and the thickness of said structure enhancement layer is the 250-350 micron, and the thickness of said barrier layer is the 50-100 micron.
6. a solar cell backboard as claimed in claim 1 is characterized in that, the thickness of said weathering layer is the 10-50 micron, and the thickness of said structure enhancement layer is the 150-350 micron, and the thickness of said barrier layer is the 50-100 micron.
7. a solar cell backboard as claimed in claim 1 is characterized in that, the thickness of said weathering layer is the 20-80 micron, and the thickness of said structure enhancement layer is the 150-250 micron, and the thickness of said barrier layer is the 50-100 micron.
8. a solar cell backboard as claimed in claim 1 is characterized in that, the thickness of said weathering layer is the 20-80 micron, and the thickness of said structure enhancement layer is the 180-300 micron, and the thickness of said barrier layer is the 20-80 micron.
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| CN201120476242XU CN202319195U (en) | 2011-11-25 | 2011-11-25 | Solar cell backplane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201120476242XU CN202319195U (en) | 2011-11-25 | 2011-11-25 | Solar cell backplane |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103426958A (en) * | 2013-06-13 | 2013-12-04 | 乐凯胶片股份有限公司 | Solar cell back film |
| CN103788594A (en) * | 2013-12-27 | 2014-05-14 | 青岛日能拉伸膜科技股份有限公司 | Formula of bidirectional stretched polyester film for solar backboard and preparation method thereof |
| CN104774434A (en) * | 2015-04-01 | 2015-07-15 | 苏州欢颜电气有限公司 | Solar battery backboard material with high weather resistance and preparation method thereof |
| CN103426958B (en) * | 2013-06-13 | 2016-11-30 | 乐凯胶片股份有限公司 | A kind of solar battery back film |
| CN111211189A (en) * | 2018-11-20 | 2020-05-29 | 杭州永信洋光电材料有限公司 | Solar backboard and solar cell module comprising same |
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2011
- 2011-11-25 CN CN201120476242XU patent/CN202319195U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103426958A (en) * | 2013-06-13 | 2013-12-04 | 乐凯胶片股份有限公司 | Solar cell back film |
| CN103426958B (en) * | 2013-06-13 | 2016-11-30 | 乐凯胶片股份有限公司 | A kind of solar battery back film |
| CN103788594A (en) * | 2013-12-27 | 2014-05-14 | 青岛日能拉伸膜科技股份有限公司 | Formula of bidirectional stretched polyester film for solar backboard and preparation method thereof |
| CN104774434A (en) * | 2015-04-01 | 2015-07-15 | 苏州欢颜电气有限公司 | Solar battery backboard material with high weather resistance and preparation method thereof |
| CN104774434B (en) * | 2015-04-01 | 2018-01-16 | 广州奥鹏能源科技有限公司 | A kind of high-weatherability solar cell backboard material and preparation method |
| CN111211189A (en) * | 2018-11-20 | 2020-05-29 | 杭州永信洋光电材料有限公司 | Solar backboard and solar cell module comprising same |
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