CN104409549B - High-efficiency black solar cell backplane and preparation method thereof - Google Patents
High-efficiency black solar cell backplane and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a high-efficiency black solar cell backplane and a preparation method thereof; the high-efficiency black solar cell backplane comprises a substrate layer, fluorocarbon layers and a sol layer, wherein the fluorocarbon layers are cured and formed on two surfaces of the substrate layer; and the sol layer is cured and formed between any one fluorocarbon layer and the substrate layer. According to the high-efficiency black solar cell backplane disclosed by the invention, the sol layer capable of being cured and formed is arranged between one fluorocarbon layer and the substrate layer; on the one hand, moisture can be prevented; the aging characteristic of the solar cell backplane is increased; on the other hand, because the sol layer has better adsorption capacity, the fluorocarbon layers outside are difficult to fall off; furthermore, the fluorocarbon layers are also cured and formed on the substrate layer; therefore, the process difficulty of the solar cell backplane can be reduced; and the production quality and the production efficiency of the solar cell backplane can be increased.
Description
Technical field
The invention belongs to area of solar cell, is related to a kind of solar cell backboard, and in particular to a kind of efficient black
Solar cell backboard and preparation method thereof.
Background technology
With the fossil energies such as coal, oil, natural gas increasingly depleted and environmental pollution it is increasingly serious, the mankind compel to be essential
Seek the alternative renewable sources of energy.Solar energy is regenerative resource most abundant in nature, and solar energy power generating is referred to
Using the photoelectric effect of solar cell, solar radiation can be converted into into the generation mode of electric energy.Solar energy can with safety
By, noiseless, it is pollution-free, can easily in combination with building the advantages of, obtained continuing at a high speed since the eighties in 20th century
Development.
Crystal silicon cell is one of core of solar photovoltaic generation system, if crystal silicon cell is directly exposed to
In air, due to being affected by meteorologic factors such as light, heat, rain, snow, the conversion efficiency of crystal silicon cell and service life meeting
Substantially reduce.Support and protection materials of the solar cell backboard as rear surface of solar cell, is that solar cell plays work
With indispensable part.Traditional solar energy back veneer material is layer structure, by weathering layer and the centre of inside and outside layer
Substrate layer is constituted, and is bonded using adhesive between these structure sheafs.In order to cater to house class photovoltaic module aesthetic
Demand, black component is developed and gradually comes into operation, and the consumption of current black solar cell backboard is in be gone up year by year
The trend for rising.In existing technology, black solar energy backboard is mainly answered by fluorine-containing film, PET basic units, EVA film trilaminate material
Conjunction is formed.There is many defects in such backboard, such as the thicker heat transfer efficiency of backboard is poor, and component reprocesses difficulty, and EVA long-term ageings are resistance to
Time property is poor, fluorine film and PET basic units bad adhesion etc..
Authorization Notice No. discloses a kind of black solar battery back for the Chinese utility model patent of CN203733821U
Plate and solar module, the black solar cell backboard includes basic unit, weather-proof black film layer, particularly, the black
Solar cell backboard also includes the weather-proof black coating being formed in the one side of the basic unit and is formed in the basic unit
It is used for the bonding macromolecule gluing of the basic unit and the weather-proof black film layer between another side and the weather-proof black film layer
Oxidant layer.Although this black solar cell backboard has good weather resistance, it is easy to which component is reprocessed, while with relatively low
Production cost；But employ the thicker adhesive of thickness between the basic unit of this backboard and weather-proof black film layer to be bondd,
So that interlayer adhesion is poor, and its reflecting rate is low, causes the power of solar module and reduces.
The Chinese invention patent of Publication No. CN103872163A discloses a kind of black solar cell backboard, including according to
The first black heat conduction weathering layer, substrate, barrier layer and the second black heat conduction weathering layer that secondary superposition is arranged, fill out inside the substrate
Filled with the first resin combination；The first black heat conduction weathering layer is formed by the second resin combination, and second black is led
Hot weathering layer is formed by the 3rd resin combination, first resin combination, the second resin combination and the 3rd resin combination
Thing is each independent to be included：The fluorine resin of 100 weight portions, the curing agent of 8～20 weight portions, the solvent of 80～200 weight portions,
The inorganic filler of 50～100 weight portions, the carbon black of 1～5 weight portion, the barrier layer is formed by aluminium or silica.Although should
Black solar cell backboard employs the resin combination of high thermal conductivity coefficient, has black solar cell backboard preferable
Thermal conductivity；But its barrier layer is obtained in a surface AM aluminum metallization or silica of substrate, this causes its processing technology
It is complicated and component reprocesses relatively costly, it is difficult to put into practical application.
Authorization Notice No. for CN203386783U that a kind of reflecting rate of Chinese utility model patent is high, encapsulation loss is low is black
Color solar components, the black solar module includes black backboard, cell piece and the first encapsulating material, wherein, it is black
Color backboard is arranged on the bottom of black solar module；Cell piece includes polylith, and polylith cell piece is distributed in black
On backboard；First encapsulating material is arranged between black backboard and cell piece, and first encapsulating material includes being located at battery
Strengthen reflective structure immediately below piece.Because the reflectivity for strengthening reflective structure is high, these light can be reflexed to the back of the body of cell piece
Face, absorbs for cell piece, so as to the encapsulation for reducing whole black solar module is lost, improves the black of unit area too
The power of positive energy battery component；But the weatherability of this backboard is poor with ageing-resistant performance, it is difficult to meet solar components 25 years
The requirement in life-span used above.
As can be seen here, design and produce a kind of black solar cell backboard so as to reach thermal conductivity height, component and reprocess
Easily, ageing-resistant performance is good, the low excellent combination property of cost requirement, it appears particularly important.
The content of the invention
The invention aims to overcome the deficiencies in the prior art and provide a kind of efficient black of excellent combination property too
Positive energy battery back-sheet.
To reach above-mentioned purpose, the technical solution used in the present invention is：A kind of efficient black solar cell backboard, it is wrapped
Fluorocarbon layer, the curing molding that substrate layer, curing molding are included in the substrate layer two sides is in arbitrary fluorocarbon layer and the base material
Sol layer between layer.
Optimally, the fluorocarbon layer is formed by black coating composition coating solidification, the original of the black coating composition
Material formula includes the component of following parts by weight：
80 ~ 120 parts of fluorine resin；
10 ~ 60 parts of modified resin；
5 ~ 40 parts of curing agent；
5 ~ 50 parts of filler of radiating；
0.5 ~ 5 part of black filler；
50 ~ 500 parts of solvent.
Further, the fluorine resin is polyvinyl fluoride, Kynoar, polytetrafluoroethylene (PTFE), perfluoroethylene-propylene, fluorine
Vinyl-vinyl ether copolymer, chlorotrifluoroethylene-ethylene copolymer, CTFE-alkyl vinyl ester copolymer, tetrafluoro
One or more compositions in Ethylene-Alkyl Vinyl base ester copolymer and tetrafluoroethene-alkyl vinyl ether co-polymer it is mixed
Compound；The modified resin is the one kind or many in methymethacrylate, methacrylate, ETHYL CYANOACRYLATE and acrylamide
Kind it is polymerized, or for the one kind in glycol ester, butanediol ester and pentaerythritol ester.
Further, the radiating filler is aluminum oxide, zirconium oxide, boron oxide, titanium dioxide, carborundum, aluminium nitride, nitrogen
Change boron, silicon nitride, gallium nitride, nano aluminium oxide Electro Sorb grafted multi-wall CNT, nano aluminum nitride Electro Sorb grafted multi-wall
The mixture of one or more compositions in CNT.
Further, one or more composition of the black filler for titanium is black, ferromanganese is black, in copper-chrome black, carbon black is mixed
Compound；The curing agent is the one kind in epoxy curing agent, amine curing agent, anhydride curing agent and isocyanate curing agent
Or it is various；The solvent is acetone, toluene, dimethylbenzene, ethyl acetate, propyl acetate, butyl acetate, ethyl butyrate, propane diols
One or more in methyl ether acetate, methyl pyrrolidone.
Optimally, the sol layer is that colloidal sol-emulsion compositions coating solidification is formed, the colloidal sol-emulsion compositions bag
50 ~ 90 parts of colloidal sols and 10 ~ 50 parts of emulsions are included, the colloidal sol is aminopropyl triethoxysilane colloidal sol, phenyl triethoxysilane
Colloidal sol, vinyl triethoxysilane colloidal sol, vinyltrimethoxy silane colloidal sol, vinyltrimethoxy silane colloidal sol and tetramethyl
One or more in TMOS colloidal sol；The emulsion be polyvinyl acetate emulsion, styrene-acrylic emulsion, polyacrylate dispersion,
One or more in interpolymer latex of polystyrene and acrylic ester and styrene butadiene copolymers emulsion.
Further, the colloidal sol-emulsion compositions also include 0.2 ~ 2 part of auxiliary agent, the auxiliary agent be titanate coupling agent,
One or more mixing in aluminate coupling agent, silane coupler, citric acid, acetylacetone,2,4-pentanedione and inorganic chlorine salt dissolving
Thing.
Optimally, the thickness of the substrate layer is 100 ~ 500 μm, and the thickness of the fluorocarbon layer is 3 ~ 100 μm, the colloidal sol
The thickness of layer is 1 ~ 50 μm.
It is a further object of the present invention to provide a kind of preparation method of efficient black solar cell backboard, it includes following
Step：
（a）The substrate layer is immersed 0.5 ~ 5 hour in alcohol/water mixed solution, is taken out and is dried at 30 ~ 60 DEG C；
（b）Sided corona treatment is carried out to the substrate layer after drying, then with any surface of alkali lye wipe substrate layer, then with steam
Distilled water is dried 0.5 ~ 2 hour at being placed in 30 ~ 60 DEG C after the face wiped clean and takes out；
（c）Coating colloidal sol-emulsion compositions on the surface that the substrate layer alkali lye is wiped across, are placed in 100 ~ 150 DEG C
Lower solidification forms the sol layer in 0.5 ~ 2 hour；
（d）Black coating composition is coated in the colloidal sol layer surface and another surface of the substrate layer, 150 are placed in
Solidification at ~ 200 DEG C forms the fluorocarbon layer in 5 ~ 15 minutes.
Optimally, the step（b）In, with alkali lye wipe substrate layer（1）It is dried at 30 ~ 60 DEG C are placed in after any surface
0.5 ~ 2 hour, then the face is wiped with distilled water.
Because above-mentioned technical proposal is used, the present invention has compared with prior art following advantages：Efficiently black of the invention
Solar cell backboard, by one layer wherein the sol layer for being capable of curing molding, a side are arranged between fluorocarbon layer and substrate layer
Face can prevent the transmission of steam, improve the ageing properties of solar energy backboard；On the other hand the sol layer has preferably suction
Attached power, makes the fluorocarbon layer of outer layer difficult for drop-off；And fluorocarbon layer be also curing molding in the upper of substrate layer, so can reduce too
The technology difficulty of positive energy battery back-sheet, improves its quality of production and production efficiency.
Description of the drawings
Accompanying drawing 1 is the structural representation of the efficient black solar cell backboard of the present invention；
Wherein, 1, substrate layer；2nd, sol layer；3rd, fluorocarbon layer.
Specific embodiment
Efficiently black solar cell backboard of the invention, mainly includes substrate layer 1, sol layer 2 and fluorocarbon layer 3.Fluorine carbon
Layer 3 has two-layer, and respectively curing molding is on the relative two sides of substrate layer 1；Sol layer 2 then curing molding arbitrary fluorocarbon layer 3 with
Between substrate layer 1.So by arranging the sol layer 2 for being capable of curing molding between one layer of fluorocarbon layer 3 and substrate layer 1 wherein,
On the one hand the transmission of steam can be prevented, the ageing properties of solar energy backboard are improve；On the other hand the sol layer 2 has preferable
Absorption affinity, make the fluorocarbon layer 3 of outer layer difficult for drop-off；And the technology difficulty of solar cell backboard can be reduced, it is improved
The quality of production and production efficiency.
In order to improve the performance such as thermal diffusivity, intensity, weatherability of fluorocarbon layer 3, its composition of raw materials is ground again
Send out so that fluorocarbon layer 3 is formed by black coating composition coating solidification, and the composition of raw materials of the black coating composition is including following
The component of parts by weight：80 ~ 120 parts of fluorine resin；10 ~ 60 parts of modified resin；5 ~ 40 parts of curing agent；5 ~ 50 parts of filler of radiating；
0.5 ~ 5 part of black filler；50 ~ 500 parts of solvent；Modified resin is added to effectively improve the strong of fluorocarbon layer 3 in composition of raw materials
Degree；And add radiating filler that the intensity of fluorocarbon layer 3 can be further improved while the thermal diffusivity of fluorocarbon layer 3 is improved.Wherein,
Fluorine resin is preferably polyvinyl fluoride, Kynoar, polytetrafluoroethylene (PTFE), perfluoroethylene-propylene, PVF-vinyl ethers copolymerization
Thing, chlorotrifluoroethylene-ethylene copolymer, CTFE-alkyl vinyl ester copolymer, tetrafluoroethene-alkyl vinyl base ester
The mixture of one or more compositions in copolymer and tetrafluoroethene-alkyl vinyl ether co-polymer；And modified resin is excellent
One or more elected as in methymethacrylate, methacrylate, ETHYL CYANOACRYLATE and acrylamide is polymerized, or
For the one kind in glycol ester, butanediol ester and pentaerythritol ester.Radiating filler be preferably aluminum oxide, zirconium oxide, boron oxide, two
Titanium oxide, carborundum, aluminium nitride, boron nitride, silicon nitride, gallium nitride, nano aluminium oxide Electro Sorb grafted multi-wall CNT, receive
The mixture of one or more compositions in rice aluminium nitride Electro Sorb grafted multi-wall CNT.Black filler is preferably titanium
Black, ferromanganese is black, the mixture of one or more composition in copper-chrome black, carbon black, and the filler of these black can be effectively increased too
The reflecting rate of positive energy battery back-sheet, so as to improve the electricity conversion of whole solar module.Curing agent is preferably ring
One or more in oxygen resin curing agent, amine curing agent, anhydride curing agent and isocyanate curing agent；Solvent is preferably third
Ketone, toluene, dimethylbenzene, ethyl acetate, propyl acetate, butyl acetate, ethyl butyrate, propylene glycol methyl ether acetate, methylpyrrole
One or more in alkanone.
In order to ensure sol layer 2 has good absorption affinity, it is preferably colloidal sol-emulsion compositions coating solidification and forms,
Colloidal sol-the emulsion compositions include 50 ~ 90 parts of colloidal sols and 10 ~ 50 parts of emulsions, and it is molten that colloidal sol is preferably aminopropyl triethoxysilane
Glue, phenyl triethoxysilane colloidal sol, vinyl triethoxysilane colloidal sol, vinyltrimethoxy silane colloidal sol, vinyl three
One or more in methoxy silane colloidal sol and tetramethoxy-silicane colloidal sol；Emulsion is preferably polyvinyl acetate emulsion, phenylpropyl alcohol
One kind in emulsion, polyacrylate dispersion, interpolymer latex of polystyrene and acrylic ester and styrene butadiene copolymers emulsion or
It is various.Colloidal sol-the emulsion compositions also include 0.2 ~ 2 part of auxiliary agent, auxiliary agent be preferably titanate coupling agent, aluminate coupling agent,
One or more mixture in silane coupler, citric acid, acetylacetone,2,4-pentanedione and inorganic chlorine salt dissolving, so as to improve colloidal sol
The bonding strength of layer 2, antioxygenic property are lifted（Stability is improved）Or cause to increase being well mixed for colloidal sol-emulsion compositions
Property.
The thickness of substrate layer 1 is preferably 100 ~ 500 μm, and the thickness of fluorocarbon layer 3 is preferably 3 ~ 100 μm, the thickness of sol layer 2
Preferably 1 ~ 50 μm.
The present invention also provides a kind of preparation method of efficient black solar cell backboard, and it is comprised the following steps：（a）Will
0.5 ~ 5 hour in the immersion alcohol/water mixed solution of the substrate layer 1, take out and dried at 30 ~ 60 DEG C；（b）To the base material after drying
Layer 1 carries out sided corona treatment, then with any surface of alkali lye wipe substrate layer 1 then with distilled water that the face wiped clean is rearmounted
It is dried at 30 ~ 60 DEG C 0.5 ~ 2 hour and takes out；（c）Coating colloidal sol-breast on the surface that the substrate layer 1 is wiped across with alkali lye
Liquid composition, solidification at being placed in 100 ~ 150 DEG C forms the sol layer 2 in 0.5 ~ 2 hour；（d）On the surface of the sol layer 2 and
The substrate layer 1 coats black coating composition on another surface, and solidification at being placed in 150 ~ 200 DEG C forms the fluorine in 5 ~ 15 minutes
Carbon-coating 3.The adhesive force of substrate layer 1 can be improved using sided corona treatment and base extraction, it is ensured that sol layer 2 and substrate layer
1 abundant bonding, wherein alcohol/water mixed solution are preferably methyl alcohol with water mixed liquid or ethanol and water mixed liquid（Alcohol and water
Volume ratio is preferably 1 ~ 5:1~5）, alkali lye be preferably mass fraction be 5 ~ 20wt% NaOH or potassium hydroxide solution.
Step（b）In, it is dried 0.5 ~ 2 hour with being placed in 30 ~ 60 DEG C after any surface of alkali lye wipe substrate layer 1, then use
Distilled water is wiped to the face, the corrosion on the surface of ion pair substrate layer 1 that so can be effectively increased in alkali lye, so as to improve
Adhesive force between sol layer 2 and substrate layer 1.
Below will the present invention is described in detail by specific embodiment.
Embodiment 1
The present embodiment provides a kind of efficient black solar cell backboard, including the fluorocarbon layer 3, base material being cascading
Layer 1, sol layer 2 and fluorocarbon layer 3.
Wherein the material of substrate layer 1 is PET, and its thickness is 100 μm.The thickness of fluorocarbon layer 3 is 3 μm, and it is by blacking
Jing heat cures after composition coating are formed, and the composition of raw materials of the black coating composition includes the component of following parts by weight：
Fluorine resin：CTFE -80 parts of alkyl vinyl ester copolymer（Molecular weight is 5000）；
Modified resin：10 parts of methacrylate polymer（Molecular weight is 2000）；
Curing agent：5 parts of isocyanate curing agent；
Radiating filler：Aluminium nitride（Particle diameter is less than 1 micron）5 parts；
Black filler：Titanium is black 0.5 part；
Solvent：50 parts of propylene glycol methyl ether acetate.
The thickness of sol layer 2 is 1 μm, and it is formed by Jing heat cures after colloidal sol-emulsion compositions coating, including 50 parts of aminopropyls
Triethoxysilane colloidal sol, 10 parts of interpolymer latex of polystyrene and acrylic ester and 0.2 part of silane coupler.
The preparation method of the efficient black solar cell backboard of the present embodiment is：
（a）Substrate layer 1 is immersed into methanol/water（Methyl alcohol is 1 with the volume ratio of water:1）0.5 hour in mixed solution, take out
Dry at 30 DEG C；
（b）Sided corona treatment is carried out to the substrate layer 1 after drying, sodium hydroxide solution is then used（Mass fraction is 5wt%）Wipe
One of surface of substrate layer 1 is wiped, is dried 2 hours at being placed in 30 DEG C, then 30 will be placed in after the face wiped clean with distilled water
It is dried at DEG C 2 hours and takes out；
（c）Above-mentioned colloidal sol-emulsion compositions are coated on a surface, are solidified at being placed in 100 DEG C 2 hours and are formed sol layer
2；
（d）Above-mentioned black coating composition is coated on the surface of sol layer 2 and another surface of substrate layer 1,150 are placed in
Solidify at DEG C 15 minutes and form fluorocarbon layer 3.
Embodiment 2
The present embodiment provides a kind of efficient black solar cell backboard, the solar-electricity in its structure and embodiment 1
Pond back board structure is consistent, and except for the difference that its each thickness degree and composition are different, specially：The thickness of substrate layer 1 is 500 μm,
The thickness of fluorocarbon layer 3 is 100 μm, and the thickness of sol layer 2 is 50 μm.
Wherein, the composition of raw materials of the black coating composition of fluorocarbon layer 3 includes the component of following parts by weight：
Fluorine resin：CTFE -120 parts of alkyl vinyl ester copolymer（Molecular weight is 20000）；
Modified resin：60 parts of methacrylate polymer（Molecular weight is 10000）；
Curing agent：40 parts of isocyanate curing agent；
Radiating filler：50 parts of aluminium nitride；
Black filler：Titanium is black 5 parts；
Solvent：500 parts of propylene glycol methyl ether acetate.
Sol layer 2 is formed by Jing heat cures after colloidal sol-emulsion compositions coating, including 90 parts of aminopropyl triethoxysilanes
Colloidal sol, 50 parts of interpolymer latex of polystyrene and acrylic ester and 2 parts of silane couplers.
In the present embodiment the preparation method of efficient black solar cell backboard with embodiment 1 in preparation method substantially
Identical, except for the difference that the design parameter of reaction condition is inconsistent, specially：
（a）Substrate layer 1 is immersed into methanol/water（Methyl alcohol is 5 with the volume ratio of water:5）5 hours in mixed solution, take out
Dry at 60 DEG C；
（b）Sided corona treatment is carried out to the substrate layer 1 after drying, sodium hydroxide solution is then used（Mass fraction is 20wt%）
One of surface of wipe substrate layer 1, is dried 0.5 hour at being placed in 60 DEG C, then with distilled water that the face wiped clean is rearmounted
It is dried at 60 DEG C 0.5 hour and takes out；
（c）Above-mentioned colloidal sol-emulsion compositions are coated on a surface, are solidified at being placed in 150 DEG C 0.5 hour and are formed colloidal sol
Layer 2；
（d）Above-mentioned black coating composition is coated on the surface of sol layer 2 and another surface of substrate layer 1,200 are placed in
Solidify at DEG C 5 minutes and form fluorocarbon layer 3.
Embodiment 3
The present embodiment provides a kind of efficient black solar cell backboard, the solar-electricity in its structure and embodiment 1
Pond back board structure is consistent, and except for the difference that its each thickness degree and composition are different, specially：The thickness of substrate layer 1 is 300 μm,
The thickness of fluorocarbon layer 3 is 50 μm, and the thickness of sol layer 2 is 20 μm.
Wherein, the composition of raw materials of the black coating composition of fluorocarbon layer 3 includes the component of following parts by weight：
Fluorine resin：CTFE -100 parts of alkyl vinyl ester copolymer（Molecular weight is 15000）；
Modified resin：50 parts of methacrylate polymer（Molecular weight is 5000）；
Curing agent：20 parts of isocyanate curing agent；
Radiating filler：15 parts of aluminium nitride；
Black filler：Titanium is black 2 parts；
Solvent：300 parts of propylene glycol methyl ether acetate.
Sol layer 2 is formed by Jing heat cures after colloidal sol-emulsion compositions coating, including 80 parts of aminopropyl triethoxysilanes
Colloidal sol, 15 parts of interpolymer latex of polystyrene and acrylic ester and 1 part of silane coupler.
In the present embodiment the preparation method of efficient black solar cell backboard with embodiment 1 in preparation method substantially
Identical, except for the difference that the design parameter of reaction condition is inconsistent, specially：
（a）Substrate layer 1 is immersed into methanol/water（Methyl alcohol is 2 with the volume ratio of water:3）2 hours in mixed solution, take out
Dry at 40 DEG C；
（b）Sided corona treatment is carried out to the substrate layer 1 after drying, sodium hydroxide solution is then used（Mass fraction is 10wt%）
One of surface of wipe substrate layer 1, is dried 1 hour at being placed in 50 DEG C, then will be placed in after the face wiped clean with distilled water
It is dried at 40 DEG C 1 hour and takes out；
（c）Above-mentioned colloidal sol-emulsion compositions are coated on a surface, are solidified at being placed in 120 DEG C 1 hour and are formed sol layer
2；
（d）Above-mentioned black coating composition is coated on the surface of sol layer 2 and another surface of substrate layer 1,180 are placed in
Solidify at DEG C 10 minutes and form fluorocarbon layer 3.
Embodiment 4
The present embodiment provides a kind of efficient black solar cell backboard, the solar-electricity in its structure and embodiment 1
Pond back board structure is consistent, and except for the difference that its composition is different, specially：Fluorine resin：CTFE-alkyl vinyl base ester is total to
100 parts of polymers；Modified resin：50 parts of methacrylate；Curing agent：20 parts of isocyanate curing agent；Radiating filler：Aluminium nitride 5
Part；Titanium is black：2 parts；Solvent：300 parts of propylene glycol methyl ether acetate.
Colloidal sol used is aminopropyl triethoxysilane colloidal sol in the present embodiment, blended emulsion be styrene-
Acrylate copolymer emulsion, auxiliary agent is silane coupler in collosol coating, and collosol coating is 10 μm.
The preparation method of the efficient black solar cell backboard of the present embodiment is：By substrate layer 1（PET）Immersion 1：1 body
0.5h in the ethanol/water mixed liquor of product ratio, to take out and carry out sided corona treatment on two relative surfaces of substrate layer 1 after drying, so
Afterwards the one side in substrate layer 1 is wiped with the sodium hydrate aqueous solution that mass fraction is 10%, after toasting 60min at 50 DEG C
Take out, then use distilled water wiped clean, dried for standby.Colloidal sol-emulsion compositions are coated at the Jing alkali lye of surface with coating device
In the one side of substrate layer 1 of reason, coating thickness is controlled for 10 μm, 0.5h is dried at 120 DEG C and obtains final product layer of transparent coating, the transparent painting
Layer is sol layer 2.Finally black coating composition is coated in the one side of another opposite face of substrate layer 1 and sol layer 2, is put
Put and solidify 5 minutes at 180 DEG C, that is, obtain fluorocarbon layer 3.
Embodiment 5
The present embodiment provides a kind of efficient black solar cell backboard, basic in its structure and content and embodiment 4
Unanimously, except for the difference that its raw material is inconsistent, specially：Fluorine resin：CTFE-alkyl vinyl ester copolymer
100 parts；Modified resin：50 parts of methacrylate；Curing agent：20 parts of isocyanate curing agent；Radiating filler：5 parts of boron nitride；Titanium
It is black：1 part；Solvent：300 parts of propylene glycol methyl ether acetate.
Embodiment 6
The present embodiment provides a kind of efficient black solar cell backboard, basic in its structure and content and embodiment 4
Unanimously, except for the difference that its raw material is inconsistent, specially：Fluorine resin：Tetrafluoroethene-alkyl vinyl ether co-polymer 100
Part；Modified resin：60 parts of pentaerythritol ester；Curing agent：20 parts of isocyanate curing agent；Radiating filler：5 parts of boron nitride；Ferromanganese
It is black：2 parts；Solvent：300 parts of propylene glycol methyl ether acetate.
Embodiment 7
The present embodiment provides a kind of efficient black solar cell backboard, basic in its structure and content and embodiment 4
Unanimously, except for the difference that its raw material is inconsistent, specially：Fluorine resin：CTFE-alkyl vinyl ester copolymer
100 parts；Modified resin：50 parts of methacrylate；Curing agent：20 parts of isocyanate curing agent；Radiating filler：5 parts of boron nitride；Manganese
It is iron black：1 part；Solvent：300 parts of propylene glycol methyl ether acetate.
Embodiment 8
The present embodiment provides a kind of efficient black solar cell backboard, basic in its structure and content and embodiment 4
Unanimously, except for the difference that its raw material is inconsistent, specially：Fluorine resin：CTFE-alkyl vinyl ester copolymer
100 parts；Modified resin：50 parts of methacrylate；Curing agent：20 parts of isocyanate curing agent；Radiating filler：Nano aluminium oxide electricity
5 parts of the multi-walled carbon nano-tubes of absorption grafting；Titanium is black：2 parts；Solvent：300 parts of ethyl acetate.
Embodiment 9
The present embodiment provides a kind of efficient black solar cell backboard, basic in its structure and content and embodiment 4
Unanimously, except for the difference that its raw material is inconsistent, specially：Fluorine resin：Tetrafluoroethene-alkyl vinyl ether co-polymer 100
Part；Modified resin：60 parts of pentaerythritol ester；Curing agent：20 parts of epoxy curing agent；Radiating filler：Nano aluminum nitride electricity is inhaled
5 parts of the multi-arm carbon nano-tube of attachment branch；Titanium is black：2 parts；Solvent：300 parts of ethyl acetate.
Embodiment 10
The present embodiment provides a kind of efficient black solar cell backboard, basic in its structure and content and embodiment 4
Unanimously, except for the difference that its raw material is inconsistent, specially：Fluorine resin：Tetrafluoroethene -100 parts of alkyl vinyl base ester；It is modified
Resin：80 parts of butanediol fat；Curing agent：20 parts of epoxy curing agent；Radiating filler：Aluminium nitride/boron nitride（Mass ratio is 2：
8）5 parts；Titanium is black：2 parts；Solvent：300 parts of ethyl acetate.
Embodiment 11
The present embodiment provides a kind of efficient black solar cell backboard, basic in its structure and content and embodiment 4
Unanimously, except for the difference that its raw material is inconsistent, specially：Fluorine resin：Tetrafluoroethene -100 parts of alkyl vinyl base ester；It is modified
Resin：80 parts of butanediol fat；Curing agent：20 parts of epoxy curing agent；Radiating filler：(mass ratio is aluminium nitride/boron nitride
2：8) 5 parts；Titanium is black：2 parts；Solvent：300 parts of ethyl acetate.
Efficient black solar cell backboard in embodiment 4 to embodiment 11 is carried out into performance test, its standard or
Method of testing is as follows：1st, wet and heat ageing resistant（Tested by GB/T2423.3）, experiment condition：+ 85 DEG C, relative humidity 85%, always
The change time is 3000h；2 and EVA peel strength（Tested according to GB/T 2790）；3rd, water vapor transmittance（According to ASTM
F-1249 is tested）；4th, thermal conductivity factor（Tested according to ASTM D-5470）.By above-mentioned test, the results are shown in Table 1
The embodiment 4 of table 1 efficient black solar cell backboard the performance test results into embodiment 11
Knowable to test result more than, efficient black solar cell backboard has excellent in embodiment 4 to embodiment 11
Different weatherability, relatively low water vapor transmittance, good thermal conductivity factor, and have higher cementability with EVA, disclosure satisfy that too
The application request of positive energy battery back-sheet, reaching can be with the standard of industrialization production.
Above-described embodiment technology design only to illustrate the invention and feature, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implement according to this, can not be limited the scope of the invention with this.It is all according to the present invention
Equivalence changes or modification that Spirit Essence is made, all should be included within the scope of the present invention.
Claims (7)
1. a kind of efficient black solar cell backboard, it is characterised in that：It includes substrate layer（1）, curing molding is in the base
Material layer（1）The fluorocarbon layer on two sides（3）, curing molding is in arbitrary fluorocarbon layer（3）With the substrate layer（1）Between sol layer
（2）；The sol layer（2）Form for colloidal sol-emulsion compositions coating solidification, the colloidal sol-emulsion compositions include 50 ~ 90 parts
Colloidal sol, 10 ~ 50 parts of emulsions and 0.2 ~ 2 part of auxiliary agent, the auxiliary agent be titanate coupling agent, aluminate coupling agent, silane coupler,
One or more mixture in citric acid, acetylacetone,2,4-pentanedione and inorganic chlorine salt dissolving, the colloidal sol is the ethoxy of aminopropyl three
Base silane colloidal sol, phenyl triethoxysilane colloidal sol, vinyl triethoxysilane colloidal sol, vinyltrimethoxy silane colloidal sol and
One or more in tetramethoxy-silicane colloidal sol；The emulsion is interpolymer latex of polystyrene and acrylic ester；The fluorocarbon layer
（3）Formed by black coating composition coating solidification, the composition of raw materials of the black coating composition includes following parts by weight
Component：
80 ~ 120 parts of fluorine resin；
10 ~ 60 parts of modified resin；
5 ~ 40 parts of curing agent；
5 ~ 50 parts of filler of radiating；
0.5 ~ 5 part of black filler；
50 ~ 500 parts of solvent.
2. efficient black solar cell backboard according to claim 1, it is characterised in that：The fluorine resin is poly- fluorine
Ethene, Kynoar, polytetrafluoroethylene (PTFE), perfluoroethylene-propylene, PVF-vinyl ether co-polymer, CTFE-ethene
Copolymer, CTFE-alkyl vinyl ester copolymer, tetrafluoroethene-alkyl vinyl ester copolymer and tetrafluoroethene-alkane
The mixture of one or more compositions in base vinyl ether co-polymer；The modified resin be methymethacrylate, third
One or more in olefin(e) acid formicester, ETHYL CYANOACRYLATE and acrylamide is polymerized, or for glycol ester, butanediol ester and
One kind in pentaerythritol ester.
3. efficient black solar cell backboard according to claim 1, it is characterised in that：The radiating filler is oxidation
Aluminium, zirconium oxide, boron oxide, titanium dioxide, carborundum, aluminium nitride, boron nitride, silicon nitride, gallium nitride, nano aluminium oxide Electro Sorb
The mixing of one or more compositions in grafting multi-arm carbon nano-tube, nano aluminum nitride Electro Sorb grafting multi-arm carbon nano-tube
Thing.
4. efficient black solar cell backboard according to claim 1, it is characterised in that：The black filler is titanium
Black, ferromanganese is black, the mixture of one or more composition in copper-chrome black, carbon black；The curing agent is epoxy curing agent, amine
One or more in class curing agent, anhydride curing agent and isocyanate curing agent；The solvent be acetone, toluene, dimethylbenzene,
One kind or many in ethyl acetate, propyl acetate, butyl acetate, ethyl butyrate, propylene glycol methyl ether acetate, methyl pyrrolidone
Kind.
5. efficient black solar cell backboard according to claim 1, it is characterised in that：The substrate layer（1）Thickness
Spend for 100 ~ 500 μm, the fluorocarbon layer（3）Thickness be 3 ~ 100 μm, the sol layer（2）Thickness be 1 ~ 50 μm.
6. in claim 1 to 5 arbitrary efficient black solar cell backboard preparation method, it is characterised in that it wrap
Include following steps：
（a）By the substrate layer（1）0.5 ~ 5 hour in immersion alcohol/water mixed solution, take out and dried at 30 ~ 60 DEG C；
（b）To the substrate layer after drying（1）Sided corona treatment is carried out, then with alkali lye wipe substrate layer（1）Any surface, then use
Distilled water is dried 0.5 ~ 2 hour at being placed in 30 ~ 60 DEG C after the face wiped clean and takes out；
（c）In the substrate layer（1）Coating colloidal sol-emulsion compositions on the surface wiped across with alkali lye, are placed at 100 ~ 150 DEG C
Solidification forms the sol layer in 0.5 ~ 2 hour（2）；
（d）In the sol layer（2）Surface and the substrate layer（1）Black coating composition is coated on another surface, is placed in
Solidification at 150 ~ 200 DEG C forms the fluorocarbon layer in 5 ~ 15 minutes（3）.
7. the preparation method of efficient black solar cell backboard according to claim 6, it is characterised in that：The step
（b）In, with alkali lye wipe substrate layer（1）It is dried 0.5 ~ 2 hour at 30 ~ 60 DEG C are placed in after any surface, then with distilled water to this
Face is wiped.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104992998B (en) * | 2015-06-30 | 2017-01-18 | 杭州福斯特光伏材料股份有限公司 | Heat conduction backboard for crystalline silicon assembly, and preparation method thereof |
| CN107026214B (en) * | 2016-12-14 | 2020-04-03 | 苏州中来光伏新材股份有限公司 | High-heat-dissipation solar cell backboard, high-heat-dissipation solar cell assembly and manufacturing method of backboard |
| CN108410340B (en) * | 2018-03-28 | 2020-04-28 | 杭州福斯特应用材料股份有限公司 | Black weather-resistant coating and preparation method and application thereof |
| CN108395561A (en) * | 2018-03-28 | 2018-08-14 | 广东轩朗实业有限公司 | Packaging protection film and preparation method thereof |
| CN109713069B (en) * | 2018-12-21 | 2020-11-13 | 苏州赛伍应用技术股份有限公司 | Black high-reflection solar cell back plate and preparation method thereof |
| CN110323287A (en) * | 2019-05-31 | 2019-10-11 | 宁波激智科技股份有限公司 | A kind of fluorocarbon layer coating fluid that solvent resistant wipes and the solar energy backboard using the coating fluid |
| CN110358375B (en) * | 2019-05-31 | 2021-10-01 | 宁波激智科技股份有限公司 | Scratch-resistant fluorocarbon layer coating liquid and solar backboard using same |
| CN111434734A (en) * | 2019-07-15 | 2020-07-21 | 宁波激智科技股份有限公司 | Fluorocarbon coating liquid, hydrolysis-resistant transparent fluorocarbon coating and solar backboard using coating |
| CN112226120A (en) * | 2019-07-15 | 2021-01-15 | 宁波激智科技股份有限公司 | Fluorocarbon coating liquid, UV-resistant transparent fluorocarbon coating and transparent solar cell back panel comprising same |
| CN114517033A (en) * | 2020-11-19 | 2022-05-20 | 宁波激阳新能源有限公司 | Fluorocarbon coating liquid and solar backboard |
| CN114591658A (en) * | 2020-11-19 | 2022-06-07 | 宁波激阳新能源有限公司 | Fluorocarbon coating liquid and solar backboard |
| CN114656844B (en) * | 2020-12-24 | 2023-02-10 | 宁波激阳新能源有限公司 | Fluorocarbon coating, fluorocarbon coating liquid and transparent solar backboard |
| CN114686056A (en) * | 2020-12-28 | 2022-07-01 | 宁波激阳新能源有限公司 | Fluorocarbon coating liquid, fluorocarbon coating and solar backboard |
| CN117690988B (en) * | 2024-01-31 | 2024-04-26 | 温州鑫泰新材料股份有限公司 | Weather-resistant low-water light-transmitting photovoltaic backboard and preparation method thereof |
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