CN102956730B - A kind of solar cell backboard and preparation method thereof and a kind of solaode - Google Patents
A kind of solar cell backboard and preparation method thereof and a kind of solaode Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention provides a kind of solar cell backboard, described backboard includes metal aluminum alloy flaggy and the organic insulator of metal aluminum alloy flaggy one side electrostatic spraying and the anticorrosion layer of another side；Described organic insulator contains polyfluoroethylene resin, polyvinylidene fluoride resin, poly-trifluoro-ethylene resin, polyflon or polyfluoroethylene resin, polyvinylidene fluoride resin, poly-trifluoro-ethylene resin, monomer and at least one in the copolymer of the monomer of other resins of polyflon.Present invention also offers the preparation method of this backboard and the solaode containing this backboard.Good adhesion is had between organic insulator and the metal aluminum alloy flaggy of the backboard of the present invention.
Description
Technical field
The invention belongs to technical field of solar batteries, particularly relate to a kind of solar cell backboard and preparation method thereof and a kind of solaode.
Background technology
Solaode is the device directly luminous energy being changed into electric energy by photoelectric effect.It is the novel power supply of a kind of following main development, has permanent, spatter property and the big advantage of motility three, its wide market.Solar energy power generating can occupy the important seat of world energy sources consumption in the near future, not only wants Substitute For Partial conventional energy resource, and will become the main body of world energy supplies.
Solar panel is typically a laminated construction, mainly includes that transparent cover plate, sealant layer, solar battery sheet, sealant layer and solar cell backboard lamination form.Wherein, the Main Function of solar cell backboard is the overall mechanical strength improving solar panel, is additionally possible to prevent steam to penetrate in sealant, affects the service life of cell piece.So solar cell backboard must have insulation (electrical breakdown withstand), ageing-resistant, resistance against weather influences and the characteristic such as corrosion-resistant.
At present, existing solar cell backboard is produced by the molded mode of stratified film.As a example by the most frequently used TPT, it is hot-forming by the bonding of glue with three layers of independent thin film of polyvinyl fluoride/polyethylene terephthalate/polyvinyl fluoride (i.e. PVF/PET/PVF).
Applicant of the present invention discloses a kind of solar cell backboard in Chinese patent CN102082185A, it includes sheet-metal layers and the electrophoretic coating organic insulator on sheet-metal layers two sides, and described organic insulator is one or more in phenolic resin, epoxy resin, amino resins.
But TPT has the disadvantage that 1, poor radiation, and TPT outer surface is pure white, the reflection to sunlight is preferable, decreases the source of heat, but the heat conductivility of macromolecule resin is excessively poor, it is impossible to the heat distributed by solar battery sheet is effectively derived；2, flexible material, needs to use bigger aluminum frame to ensure that its mechanical load passing through in IEC61215 is tested in solar module produces.And the organic insulator electrophoresis of solar cell backboard is coated on sheet-metal layers disclosed in above-mentioned patent, the adhesion between organic insulator and sheet-metal layers is bad.
Summary of the invention
The present invention solves heat dispersion difference and the technical problem of adhesion difference of solar cell backboard of the prior art, it is provided that a kind of price good in thermal property and the good solar cell backboard of adhesion and preparation method thereof and the solaode containing this backboard.
The invention provides a kind of solar cell backboard, described backboard includes metal aluminum alloy flaggy and the organic insulator of metal aluminum alloy flaggy one side electrostatic spraying and the anticorrosion layer of another side；Described organic insulator contains polyfluoroethylene resin, polyvinylidene fluoride resin, poly-trifluoro-ethylene resin, polyflon or polyfluoroethylene resin, polyvinylidene fluoride resin, poly-trifluoro-ethylene resin, monomer and at least one in the copolymer of the monomer of other resins of polyflon.
Present invention also offers the preparation method of above-mentioned solar cell backboard, the method includes being passivated metal aluminum alloy flaggy or microetch process, then the one side at metal aluminum alloy flaggy forms organic insulator by the method for electrostatic spraying, forms anticorrosion layer at another side；Described organic insulator contains polyfluoroethylene resin, polyvinylidene fluoride resin, poly-trifluoro-ethylene resin, polyflon or polyfluoroethylene resin, polyvinylidene fluoride resin, poly-trifluoro-ethylene resin, monomer and at least one in the copolymer of the monomer of other resins of polyflon.
Present invention also offers a kind of solaode, it includes stacking gradually the transparency cover flaggy of hot pressing, sealant layer, solaode lamella, sealant layer and solar cell backboard layer；Described solar cell backboard is solar cell backboard of the present invention.
The solar cell backboard of the present invention is with metal aluminum alloy plate as base material, use the method for electrostatic spraying to form organic insulator in its surface in the front (with EVA contact surface) of metal aluminum alloy flaggy, adhesion between this organic insulator and metal aluminum alloy plate is good, before carrying out electrostatic spraying, metal aluminum alloy flaggy is passivated simultaneously or microetch processes, passivation or microetch process surface and and roughness, the adhesion between increase organic insulator and metal aluminum alloy flaggy further that can increase metal aluminum alloy flaggy.
Detailed description of the invention
The invention provides a kind of solar cell backboard, described backboard includes metal aluminum alloy flaggy and the organic insulator of metal aluminum alloy flaggy one side electrostatic spraying and the anticorrosion layer of another side；Before electrostatic spraying, metal aluminum alloy flaggy is passivated or microetch processes；Described organic insulator contains polyfluoroethylene resin, polyvinylidene fluoride resin, poly-trifluoro-ethylene resin, polyflon or polyfluoroethylene resin, polyvinylidene fluoride resin, poly-trifluoro-ethylene resin, monomer and at least one in the copolymer of the monomer of other resins of polyflon.
The present invention uses metal aluminum alloy flaggy as basic unit, makes backboard have higher mechanical strength, therefore, it is possible to be significantly reduced the thickness of aluminum frame, thus reduces the usage amount of aluminum.Aluminum, as metal, good heat-transfer, has preferable thermal diffusivity.Aluminum quality in a metal is very light, thus has less absorption to infrared ray.
Described organic insulator contains polyfluoroethylene resin, polyvinylidene fluoride resin, poly-trifluoro-ethylene resin, polyflon or polyfluoroethylene resin, polyvinylidene fluoride resin, poly-trifluoro-ethylene resin, monomer and at least one in the copolymer of the monomer of other resins of polyflon.The sealant layer of this organic insulator and solar energy has good adhesion, can completely cut off again contacting of air and backboard simultaneously, play the effect stoping burning, it is also possible to strengthen cell piece and combine the insulating properties between backboard.Other resins described have no particular limits, as long as can be with the monomer copolymerization of above-mentioned resin, such as the monomeric acrylic etc. of polyacrylic resin.
Described organic insulator can be single coating, it is also possible to for composite coating, be i.e. divided into prime coat and top coat layer.Priming paint is to increase organic insulator and the adhesion of metal aluminum alloy flaggy.The color of organic insulator has no particular limits, but is able to the radiation of more preferable reflected sunlight, reduces the temperature of backboard, it is preferable that the color of organic insulator is white.Either single coating or composite coating, the thickness of organic insulator is in 10-120 μm, is optimal with 30-60 μm.
Coating used by described organic insulator can also be able to be purchased with oneself configuration, and the present invention uses the coating being purchased, and such as the fluorocarbon coating of PPG company, model is DURANAR®XL WHITE or the fluorocarbon resin of AKZO NOBEL company, model is Interpon®
powder coatings D3000 fm。
According to solar cell backboard provided by the present invention, it is preferable that described anticorrosion layer is anodic oxide coating, dope layer or differential arc oxidation layer.Described dope layer can be the coating identical with organic insulator, it is also possible to be other coatings, as long as corrosion resistance can be met.If mainly considering that organic insulator is different with the environment residing for dope layer, it may be preferred to use different materials.Dope layer is exposed in atmosphere, uses water-resisting property, weatherability preferably resin.Organic insulator then use excellent insulating property and with sealant layer adhesion preferably resin；If it is considered that if primary operational facilitates and be time-consuming, it is preferred to use the coating that dope layer is identical with organic insulator.
According to solar cell backboard provided by the present invention, it is preferable that the thickness of anodic oxide coating is 10-40 μm, more preferably 20-25 μm, anodised color is optimal with true qualities.The thickness of differential arc oxidation is 10-70 μm, more preferably 20-25 μm, and the color of differential arc oxidation is optimal with white.
The solar cell backboard provided according to this, it is preferable that the thickness of described metal aluminum alloy flaggy is 0.1-0.7mm, more preferably 0.15-0.3mm.The material of aluminium alloy plate is the aluminium alloy of each system of 1 fine aluminium being and 2-9 system.Wherein, it is to be for most preferably with 6 with 5.
The solar cell backboard provided according to this, it is preferable that the thickness of described backboard is 0.15-0.9mm, more preferably 0.2-0.4mm.
The solar cell backboard provided according to this, preferably, possibly together with functional filler in described organic insulator, described functional filler is at least one in Rutile type titanium dioxide, zinc oxide, zinc sulfide, stibium oxide, aluminium oxide, hargil, aluminium oxide, barium sulfate, barite, calcium carbonate, magnesium silicate, silicon dioxide, kieselguhr, ultramarine, Benzoinum and glass microballoon.Described functional filler can increase the reflection of sunlight, is reflected into sunlight most preferably with Rutile type titanium dioxide and glass microballoon.
In the solar cell backboard of the present invention, organic insulator is good with the adhesion of metal aluminum alloy flaggy, immediately uses for a long time, is not easy to come off.Secondly, the organic insulator of the present invention is uniform, smooth, smooth, and compactness is good；Compactness can effectively prevent well penetrating of steam, and smooth surface, compactness cause well the corrosion resistance of organic insulator strong.Again, the hardness of the organic insulator of the present invention is high, good impact resistance, can improve organic insulator and suffer the resistance of the unexpected injuries such as scuffing, such that it is able to effectively protection metal aluminum alloy flaggy, improves the service life of solar cell backboard.
Present invention also offers the preparation method of a kind of solar cell backboard, the method is included in the one side of metal aluminum alloy flaggy and forms organic insulator by the method for electrostatic spraying, forms anticorrosion layer at another side；Before described electrostatic spraying, aluminium alloy flaggy is passivated or microetch processes；Described organic insulator contains polyfluoroethylene resin, polyvinylidene fluoride resin, poly-trifluoro-ethylene resin, polyflon or polyfluoroethylene resin, polyvinylidene fluoride resin, poly-trifluoro-ethylene resin, monomer and at least one in the copolymer of the monomer of other resins of polyflon.
According to preparation method provided by the present invention, it is preferable that described electrostatic spraying is electrostatic spraying or the electrostatic spraying of solvent based coating of powdery paints.After using the method for electrostatic spraying, the adhesive force of coating is high, and being not adhered to the powder body on aluminium alloy plate can reclaim simultaneously, and raw material is not the most wasted, can well be cost-effective.Being passivated metal aluminum alloy flaggy before carrying out electrostatic spraying simultaneously or microetch processes, passivation or microetch process surface and and roughness, the further adhesion increased between organic insulator and metal aluminum alloy flaggy that can increase metal aluminum alloy flaggy.
The electrostatic spraying of described powdery paints, the voltage general control of spraying is 40-100KV, and the air pressure for powder is 0.2-0.8MPa, and sintering temperature is 160-260 DEG C, and sintering time is 10-30min.
The electrostatic spraying of described solvent based coating, the voltage general control of spraying is 20-120KV, and air pressure is 0.2-0.8MPa, dries temperature and is 100-180 DEG C, and drying time is 10-60min.
According to preparation method provided by the present invention, it is preferable that described formation anticorrosion layer anodic oxide coating, dope layer or differential arc oxidation layer.
The method of described formation anodic oxide coating is after the one side of aluminum alloy plate materials forms organic insulator, anodic oxidation is carried out at its another side, described anodic oxidation can use any anode oxidation method being conventionally used for aluminum alloy surface, for example, it is possible to carry out in the sulphuric acid of 50-500 grams per liter, preferably 100-300 grams per liter, electric current density can be 0.5-5 peace/square centimeter, being preferably 1-3 peace/square centimeter, oxidization time can be 10-60 minute, preferably 15-40 minute.
Described formation differential arc oxidation layer method is after the one side of aluminum alloy plate materials forms organic insulator, differential arc oxidation is carried out at its another side, described differential arc oxidation can use any differential arc oxidation method being conventionally used for aluminum alloy surface, such as, at sodium phosphate 10g/L-20g/L, sodium silicate 5g/L-l0g/L, potassium hydroxide 1
G/L-4 g/L, sodium molybdate l0g/L-15g/L, the pH value range of electrolytic solution is 8-12.Magnitude of voltage is 550V-650V, and the time is 30-60min.Pending aluminium alloy is placed in electrolytic solution, is placed on the stainless steel tube in the middle of solution and uses direct current pulse power source as negative electrode, aluminium alloy as anode, power supply.Aluminium alloy castings generates one layer of alumina ceramic layer with aluminium oxide as Main Ingredients and Appearance.
According to preparation method provided by the present invention, it is preferable that before forming organic insulator and anticorrosion layer, metal aluminum alloy plate is passivated or microetch processes.Passivation or microetch process surface area and the roughness that can increase aluminium alloy plate.
Described passivating method is method commonly used in the art.Two kinds of passivating methods simply it are described below at this:
Passivating method one: can carry out aluminium alloy passivating solution soaking, spraying or wiping.Time is 1-10 minute, and temperature is 15-40 DEG C.Passivating solution is: acrylic resin 1-50 part, silica gel 2-100 part, NaS 5-30 part, NaH2PO43-100 part, HF 0.5-90 part, HNO3
1-95 part and the water of 1000 parts.
Passivating method two: first aluminium alloy plate contains washing in decontamination pond of deoiling of abstergent, and temperature 30-60 DEG C, the time is 10-20min.It is washed to neutrality, soaking at room temperature 2-3min in the salpeter solution of 5-8%.Being washed to neutrality, soak 50-60min in passivation enveloping agent solution, temperature is 40-60 DEG C, and the concentration of passivation chelating agent is 5-8%, and total alkalinity is 15-25.It is washed to neutrality, is dried.
The method of described microetch is: first aluminium alloy plate contains washing in decontamination pond of deoiling of abstergent, and temperature 30-60 DEG C, the time is 10-20min.After going to degrease in concentration is 8-12%NaOH solution soaking at room temperature 5-20min.It is washed to neutrality, soaking at room temperature 2-7min in the HCl solution that concentration is 5%.It is washed to neutrality, is dried.
Present invention also offers a kind of solaode, it includes stacking gradually the transparency cover flaggy of hot pressing, sealant layer, solaode lamella, sealant layer and solar cell backboard layer；Described solar cell backboard is solar cell backboard of the present invention.
Wherein, transparent cover plate is well known to ability and technical staff, generally glass.
Sealant layer also well known to skilled person, generally ethylene-vinyl acetate copolymer (EVA).Other are known in those skilled in the art, and therefore not to repeat here.
The solar cell backboard of the present invention, can be adjusted the thickness of coating according to the situation of different coating, less than 0.25mm.Although aluminum alloy plate materials is thick, but it is the optimum conductor of heat.Rigid material, less aluminum frame, save aluminium alloy, and its price is relatively low.
The present invention is further elaborated by Application Example below.
Embodiment 1
The aluminium alloy plate (model: 5052) that thickness is 0.3mm is passivated pretreatment, then it is finally dried 60min at 160 DEG C by the electrostatic spraying composite coating of its two sides solvent based coating, obtain solar cell backboard A1.The thickness of priming paint is 7.5 μm, and the thickness of finish paint is 27.5 μm.Priming paint and the fluorocarbon coating that finish paint is PPG company, model is DURANAR XL
WHITE。
Embodiment 2
The aluminium alloy plate (model: 1060) that thickness is 0.15mm is passivated pretreatment, then it is finally sintered 25min at 240 DEG C by the electrostatic spraying single coating of its two sides powdery paints, obtain solar cell backboard A2.Coating layer thickness is 25 μm.The fluorocarbon resin of AKZO NOBEL company, model is Interpon
powder coatings D3000 fm。
Embodiment 3
The aluminium alloy plate (model: 6061) that thickness is 0.7mm is passivated pretreatment, then by the electrostatic spraying composite coating of wherein one side solvent based coating, dries 60min for 160 DEG C.Finally place it in anodizing solution and another side is carried out anodic oxidation, obtain solar cell backboard A3.The thickness of anodic oxide coating is 20 μm.The thickness of priming paint is 5 μm, and the thickness of finish paint is 25 μm.Priming paint and the fluorocarbon coating that finish paint is PPG company, model is DURANAR XL
WHITE。
Embodiment 4
The aluminium alloy plate (model: 6063) that thickness is 0.3mm is carried out microetch pretreatment, wherein the electrostatic spraying single coating of one side powdery paints, then it is sintered 30min at 220 DEG C.Finally placing it in anodizing solution and another side is carried out anodic oxidation, obtain solar cell backboard A4, the thickness of anodic oxide coating is 10 μm.Coating layer thickness is 60 μm.The fluorocarbon resin of AKZO NOBEL company, model is Interpon
powder coatings D3000 fm。
Embodiment 5
The aluminium alloy plate (model: 6061) that thickness is 0.3mm is carried out microetch pretreatment, wherein the electrostatic spraying single coating of one side powdery paints, then it is sintered 30min at 220 DEG C.Finally place it in anodizing solution and another side is carried out anodic oxidation, obtain solar cell backboard A5.The thickness of anodic oxide coating is 40 μm.Coating layer thickness is 10 μm.The fluorocarbon resin of AKZO NOBEL company, model is Interpon
powder coatings D3000 fm。
Embodiment 6
The aluminium alloy plate (model: 6063) that thickness is 0.3mm is passivated pretreatment, the electrostatic spraying single coating of one side powdery paints wherein, then it is sintered 30min at 220 DEG C.Finally place it in differential arc oxidation liquid and another side is carried out differential arc oxidation, obtain solar cell backboard A6.The thickness of differential arc oxidation layer is 40 μm.Coating layer thickness is 120 μm.The fluorocarbon resin of AKZO NOBEL company, model is Interpon
powder coatings D3000 fm。
Embodiment 7
The aluminium alloy plate (model: 1060) that thickness is 0.7mm is passivated pretreatment, then it is finally sintered 30min at 200 DEG C by the electrostatic spraying single coating of its two sides powdery paints, obtain solar cell backboard A7.Coating layer thickness is 100 μm.The fluorocarbon resin of AKZO NOBEL company, model is Interpon
powder coatings D3000 fm。
Comparative example 1
The TPT solar cell backboard CA1 bought, upper strata PVF thickness 25 μm, middle PE T thickness 0.3mm, lower floor's PVF thickness 25 μm.
Comparative example 2
Take the aluminium alloy plate of 0.7mm, the polyurethane modified epoxy resin layer of electrophoretic coating 40 μm in aluminium alloy plate one side.The melamine resin layer of electrophoretic coating 30 μm on another side.Make solar cell backboard, be denoted as CA2.
Method of testing and result
1, insulating properties
Test according to UL1703 method of testing, it is possible to tolerance 3000V high pressure, and the most breakdown be considered as qualified.The results are shown in Table 1.
2, solar module conversion ratio
Each cell piece quantity 60(6*10) sheet, choose the cell piece (15.5-16.0%) of same transitions efficiency as far as possible, prepare assembly B1-B7 and CB1 that area is 1640*992mm.The test of assembly transformation efficiency is with reference to IEC61215.The results are shown in Table 1.
3, thermal diffusivity test
First the solaode of embodiment 1-7 and the different backboard materials of comparative example 1 is made the battery modules of 1640*992mm specification, to irradiate 1 hour under outdoor daylight, with infrared radiation thermometer, 5, battery is measured temperature, average, the temperature of contrast unlike material backboard battery.Testing time is 12:50:02-13:50:02 at noon on May 9th, 2011, and place is Shenzhen, the results are shown in Table 1.
4, the reflectance of organic insulator
The test of the reflectance of insulating coating is with reference to JGT 235-2008.The results are shown in Table 1.
5, peel strength
Test according to ASTM D 1876-08, the results are shown in Table 1.
Table 1
。
From table 1 it follows that the insulating properties of the backboard of the present invention complies fully with requirement；And it is higher than with comparative example 1 and the assembly of the backboard of comparative example 2 with the conversion ratio of the assembly of the backboard of the present invention；As can also be seen from Table 1, after thermal diffusivity is tested, the temperature of embodiment 1-7 is significantly lower than comparative example 1 and comparative example 2, this illustrates that heat can effectively be distributed by solar cell backboard provided by the present invention, so that the temperature of solaode is maintained at relatively low state, the efficiency making solaode improves and reduces the high temperature infringement of parts, elongate member service life.The backboard of the present invention has high reflectance, and solar radiation energy reflection can effectively be gone out by higher reflectance, and is not absorbed by aluminium alloy plate, improves efficiency and the life-span of solaode.The peel strength of the backboard of the present invention is higher than 36
N/cm, the peel strength of comparative example 1 is 30
N/cm, comparative example 2 is 20
N/cm, the adhesion of the backboard of the present invention is significantly better than comparative example.
Claims (12)
1. a solar cell backboard, it is characterised in that described backboard include metal aluminum alloy flaggy, with
And the metal aluminum alloy flaggy one side organic insulator of electrostatic spraying and the anticorrosion layer of another side；Described organic absolutely
Edge layer by polyfluoroethylene resin, polyvinylidene fluoride resin, poly-trifluoro-ethylene resin, polyflon or
Polyfluoroethylene resin, polyvinylidene fluoride resin, poly-trifluoro-ethylene resin, polyflon monomer with
At least one in the copolymer of the monomer of other resins and functional filler composition, described organic insulator
For composite bed, this composite bed includes that prime coat and top coat layer, described functional filler are Rutile type titanium dioxide
And glass microballoon.
Solar cell backboard the most according to claim 1, it is characterised in that described anticorrosion layer is sun
Pole oxide layer, dope layer or differential arc oxidation layer.
Solar cell backboard the most according to claim 2, it is characterised in that the thickness of described dope layer
Degree is 10-120 μm；The thickness of described anodic oxide coating is 10-40 μm；The thickness of described differential arc oxidation layer is
10-70μm。
Solar cell backboard the most according to claim 1, it is characterised in that described organic insulator
Thickness be 10-120 μm.
Solar cell backboard the most according to claim 1, it is characterised in that described metal aluminum alloy
The thickness of flaggy is 0.1-0.7mm.
Solar cell backboard the most according to claim 1, it is characterised in that the thickness of described backboard
For 0.15-0.9mm.
7. the preparation method of a solar cell backboard, it is characterised in that the method includes closing metallic aluminium
Gold flaggy is passivated or microetch processes, then in side by electrostatic spraying of the one side of metal aluminum alloy flaggy
Method forms organic insulator, forms anticorrosion layer at another side；Described organic insulator by polyfluoroethylene resin,
Polyvinylidene fluoride resin, poly-trifluoro-ethylene resin, polyflon or polyfluoroethylene resin, poly-inclined fluorine
The copolymerization of the monomer of vinyl, poly-trifluoro-ethylene resin, the monomer of polyflon and other resins
At least one in thing and functional filler composition, described organic insulator is composite bed, this composite bed bag
Including prime coat and top coat layer, described functional filler is Rutile type titanium dioxide and glass microballoon.
Preparation method the most according to claim 7, it is characterised in that described electrostatic spraying is that powder is coated with
The electrostatic spraying of material or the electrostatic spraying of solvent based coating.
Preparation method the most according to claim 7, it is characterised in that described passivation passivating solution is:
Acrylic resin 1-50 part, silica gel 2-100 part, NaS 5-30 part, NaH2PO43-100 part, HF 0.5-
90 parts, HNO31-95 part and the water of 1000 parts；Passivation time is 1-10 minute, and passivation temperature is 15-
40℃。
Preparation method the most according to claim 7, it is characterised in that described passivation passivating solution bag
Including passivation chelating agent, the concentration of described passivation chelating agent is 5-8%, and total alkalinity is 15-25；Passivation time is
50-60min, passivation temperature is 40-60 DEG C.
11. preparation methoies according to claim 7, it is characterised in that the method that described microetch processes
For soaking at room temperature 2-7min in the HCl solution of 5%.
12. 1 kinds of solaodes, it includes stacking gradually the transparency cover flaggy of hot pressing, sealant layer, too
Sun energy battery lamella, sealant layer and solar cell backboard；It is characterized in that, described solar battery back
Plate is the solar cell backboard described in claim 1-6 any one.
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| CN201110250731.8A CN102956730B (en) | 2011-08-29 | 2011-08-29 | A kind of solar cell backboard and preparation method thereof and a kind of solaode |
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