CN116344647B - High-reflection black solar backboard and preparation method thereof - Google Patents

High-reflection black solar backboard and preparation method thereof Download PDF

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Publication number
CN116344647B
CN116344647B CN202310621029.0A CN202310621029A CN116344647B CN 116344647 B CN116344647 B CN 116344647B CN 202310621029 A CN202310621029 A CN 202310621029A CN 116344647 B CN116344647 B CN 116344647B
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coating
layer
parts
reflecting layer
weather
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CN116344647A (en
Inventor
王亚丽
王同心
何张才
杨慧慧
毛强强
徐伟杰
张涛
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Suzhou Hongdao New Material Co ltd
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Suzhou Hongdao New Material Co ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • H01L31/049—Protective back sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B05D3/0272—After-treatment with ovens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B05D5/061—Special surface effect
    • B05D5/063—Reflective effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
    • B05D7/04—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber to surfaces of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B7/04—Interconnection of layers
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    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
    • H01L31/0547—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the reflecting type, e.g. parabolic mirrors, concentrators using total internal reflection
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    • B05D2201/00—Polymeric substrate or laminate
    • B05D2201/02—Polymeric substrate
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    • B05D2506/10—Fluorinated polymers
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    • B05D2506/10—Fluorinated polymers
    • B05D2506/15—Polytetrafluoroethylene [PTFE]
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    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
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    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract

The invention discloses a high-reflection black solar backboard and a preparation method thereof, and relates to the technical field of solar photovoltaic backboard. The high-reflection black solar backboard is characterized in that a reflecting layer, a supporting substrate and a weather-resistant layer are sequentially arranged from inside to outside, the reflecting layer is coated on the surface of the supporting substrate through reflecting layer coating liquid, and a black reflecting layer film is obtained after solidification. The reflective layer coating liquid comprises the following components in parts by weight: 30-50 parts of fluorine-containing resin; 5-10 parts of organic pigment; 1-20 parts of a diluent; 1-5 parts of curing agent; 10-30 parts of a solvent; 1-10 parts of auxiliary agent. The high-reflection black backboard has the characteristics of high reflectivity in the near infrared band, good heat dissipation of a coating and excellent weather resistance, does not need to additionally increase a barrier layer, can simultaneously prevent pigment migration and improve the ultraviolet resistance of the pigment, and has simple process and low cost.

Description

High-reflection black solar backboard and preparation method thereof
Technical Field
The invention relates to the technical field of solar photovoltaic back plates, in particular to a high-reflection black solar back plate and a preparation method thereof.
Background
With the rapid development of distributed photovoltaics, new requirements are put on the design of components, especially the appearance needs to be consistent in color system, and nowadays, integrated black components are welcome by more and more demanding parties. The back plate adopted for packaging the components correspondingly needs to have black appearance on the light receiving surface, so that the color consistent with that of the black crystalline silicon battery piece and the black frame is achieved. And a plurality of manufacturers adopt black photovoltaic back plates to manufacture photovoltaic modules.
The conventional black is mainly because the reflectivity of the absorption spectrum is low, so that the conventional black backboard cannot generate effective secondary reflection in the process of being applied to the photovoltaic module packaging, and the power gain of the photovoltaic module is not facilitated. Meanwhile, the backboard is easy to absorb heat and raise temperature, the power generated by the assembly is reduced, and the backboard is easy to deform and age after long-term use.
At present, the conventional black photovoltaic backboard in the market is usually manufactured by adopting carbon black or inorganic metal oxide and other pigments to manufacture a black coating, the coating absorbs most of radiant energy, the reflectivity in the visible light region and the infrared light region is low, especially the reflectivity in the near infrared band is lower than 30%, and the effect of the black photovoltaic backboard is far from the use requirement. Although the reflectivity in the infrared light region can be increased to more than 50% by using the organic black pigment, the organic black pigment has small particle size, large surface energy and easy agglomeration, has poor dispersibility, storage stability and use convenience, and has the risks of poor stability, decoloration, discoloration and color migration under the conditions of high temperature and high humidity.
In the prior art, patent 202010521753.2 discloses a preparation technology of black high-reflection composition, coating, granules and solar cell backboard. The black high-reflection composition comprises particles with a core-shell structure, wherein the particles with the core-shell structure form a core by an organic black dye, and the particles with the core-shell structure form a shell by an anti-ultraviolet auxiliary agent coated outside the core. The solar cell back sheet prepared by using the organic pigment as a coloring component has high reflectivity to infrared light rays and durable and weather-proof service stability, but the color migration problem of the organic pigment is not improved. There is also prior art polymer coating of organic pigments to improve the color migration problem, but this approach does not improve the uv resistance of the organic pigments.
Patent 202211466498.1 discloses a photovoltaic backsheet and a photovoltaic module. The photovoltaic backboard comprises a weather-resistant layer, a substrate layer, a black reflecting layer and a barrier layer which are sequentially arranged, wherein the black reflecting layer is provided with organic pigment; the photovoltaic backboard of the patent is provided with the barrier layer, so that water vapor, air, organic pigment and polar substances are effectively blocked, the polar substance adsorption pigment generated in the hydrolysis process of the adhesive film is reduced, the contact between the organic substance of the high-reflection black coating and the adhesive film is avoided, the problem of dyeing the adhesive film is solved, and the increase of the barrier layer can lead to complex process and rising cost.
In order to effectively improve the power generation efficiency and stability of the battery, it is necessary to develop a black photovoltaic backboard with high reflectivity, excellent weather resistance and color locking property in the near infrared band light wave, and simple process.
Disclosure of Invention
Aiming at the problems and the defects, the invention aims to solve the technical problems that: the high-reflection black solar backboard and the preparation method thereof are provided, the reflectivity of the backboard in the near infrared band is improved, the weather resistance of the backboard is improved, the pigment migration is prevented, the ultraviolet resistance of the pigment is improved, and the process is simple and easy to realize through the formula design of the coating composition.
In order to solve the technical problems, the invention adopts the following technical scheme:
the high-reflection black solar backboard sequentially comprises a reflecting layer, a supporting substrate and a weather-resistant layer from inside to outside, wherein the reflecting layer is coated on the surface of the supporting substrate by using a reflecting layer coating liquid, and a black reflecting layer film is obtained after curing.
The coating liquid comprises the following components in parts by weight:
30-50 parts of fluorine-containing resin;
5-10 parts of organic pigment;
1-20 parts of a diluent;
1-5 parts of curing agent;
10-30 parts of a solvent;
1-10 parts of auxiliary agent.
Preferably, the coating liquid comprises the following components in parts by weight:
40-45 parts of fluorine-containing resin;
6-8 parts of organic pigment;
10-18 parts of a diluent;
3-4 parts of curing agent;
20-25 parts of a solvent;
3-9 parts of auxiliary agent.
Still preferably, the coating liquid comprises the following components in parts by weight:
43-45 parts of fluorine-containing resin;
7-8 parts of organic pigment;
15-17 parts of a diluent;
3-4 parts of curing agent;
23-25 parts of a solvent;
5-6 parts of auxiliary agent.
Wherein, the main resin of the coating liquid is preferably fluorine-containing resin, so that the weather resistance of the coating is ensured; in some cases, in order to eliminate adverse effects on the environment and human body in the scrapping treatment process of the fluorine-containing backboard, the fluorine-containing backboard meets the requirement of environmental friendliness, and other single fluorine-free resin or multiple fluorine-free resins can be compounded to be used as the main resin of the coating liquid.
Preferably, the fluorine-containing resin is selected from one or more of polyvinylidene fluoride, polytrifluoroethylene, polytetrafluoroethylene, monofluoroethylene-vinyl ether copolymer, monofluoroethylene-vinyl ester copolymer, vinylidene fluoride-vinyl ether, vinylidene fluoride-vinyl ester, trifluorochloroethylene-vinyl ether, trifluorochloroethylene-vinyl ester, tetrafluoroethylene-vinyl ether and tetrafluoroethylene-vinyl ester.
The organic pigment is in a core-shell structure, the core is the organic pigment, the shell is composed of an inner shell and an outer shell, and the inner shell is inorganic SiO 2 The shell is a high polymer layer, and the core-shell structure is a core-inner shell-outer shell in sequence from inside to outside.
The inner shell is prepared by an electrostatic self-assembly technology, and the outer shell is prepared by an in-situ polymerization method.
The inner shell is prepared by adopting an electrostatic self-assembly technology, and transparent SiO with moderate thickness, compactness and uniformity is formed on the surface of the pigment 2 The film layer does not affect pigment color. Compared with the pure polymer coating technology, inorganic SiO 2 The material also has excellent water and oxygen blocking, heat dissipation and weather resistance, can provide water blocking protection for the pigment inner core, improves the wet and heat stability of the reflective coating, and prevents migration and precipitation of pigment after aging. The organic pigment is prevented from being corroded and damaged by the external environment, and the organic pigment is prevented from aging, decoloring and changing color after long-term use. SiO (SiO) 2 The material has low ultraviolet light transmittance and can prevent ultraviolet light from damaging the organic pigment. The SiO is 2 Based on the inner shell, the transparent resin-forming monomer is used to graft polymer with excellent weather resistance and corrosion resistance to SiO by in-situ polymerization 2 And (3) coating the surface of the organic pigment to prepare the organic-inorganic double-layer coated organic pigment. The polymer shell is coated on SiO 2 The surface of the inner shell can improve the compatibility of the pigment and the main resin of the reflecting layer and can also improve the adhesive force between the pigment and the coating of the reflecting layer.
The organic pigment is a black organic pigment or a composition compounded by multicolor organic pigments;
the black organic pigment is at least one of direct black 44, metal complex dye X55, azo pigment B27, aniline black NO.2, perylene black LP32 and perylene black L0086;
the multicolor organic pigment compound composition is one or more of pigment red, pigment blue, pigment yellow and color green.
The high molecular polymer is modified polyacrylic resin; the modified polyacrylic resin is selected from one or more of organic silicon modified acrylic resin and fluorine silicon modified acrylic resin.
In some preferred embodiments, the core-shell structure has a core to shell mass ratio of 0.3 to 3:1.
If the shell is too thin, the effect of protecting pigment, improving dispersibility and compatibility and improving migration resistance can not be achieved; if the shell is too thick, the color of the organic pigment is influenced, and the infrared reflection effect of the back plate is also influenced to a certain extent.
The diluent is amino silane modified polyfunctional acrylate, and is obtained by Michael addition reaction of amino silane and polyfunctional acrylate, no catalyst is needed, no by-product is produced, and the synthesis method is simple.
The Michael addition reaction is a conventional Michael addition reaction, namely, adding polyfunctional acrylate with a certain mole number into a reactor, mechanically stirring, slowly adding aminosilane in a mole ratio at 70 ℃ in an oil bath, and stirring for reacting for 24 hours.
The aminosilane is selected from one or more of N-cyclohexyl-3-aminomethyl dimethoxy silane (CAMS), cyclohexyl methyl dimethoxy silane (CMMS), N-cyclohexyl-gamma-aminopropyl methyl dimethoxy silane (CNMS), N-methyl aminopropyl methyl dimethoxy silane (CBMS) and N- (6-amino hexyl) aminomethyl triethoxy silane (CEMS).
The polyfunctional acrylic monomer is selected from one or more of trimethylolpropane triacrylate (TMPTA), pentaerythritol triacrylate (PETA), trimethylolpropane trimethacrylate (TMPTMA), 9-ethoxytrimethylolpropane trimethacrylate (EO 9-TMPTMA), tris (2-hydroxyethyl) isocyanuric acid triacrylate (THEI CTA), propoxylated trimethylolpropane triacrylate (PO 3-TMPTA), 15-ethoxytrimethylolpropane triacrylate (EO 15-TMPTA), 9-ethoxytrimethylolpropane triacrylate (EO 9-TMPTA), dipentaerythritol hexaacrylate (DPHA), ditrimethylolpropane tetraacrylate (DITMP 4A) and pentaerythritol tetraacrylate (PETA 4).
Polyfunctional diluents (monomers) generally have the following characteristics compared with mono-and difunctional monomers due to the increased content of functional groups: the curing speed is high because each molecule contains a plurality of active groups, resulting in a cured product having a large crosslinking density.
According to the invention, the amino silane modified polyfunctional acrylate is used as a diluent, and the polyfunctional acrylic monomer is polymerized to enable the coating to quickly form a three-dimensional network structure, so that the network structure has a fixing effect on pigment particles in the coating, migration of the pigment particles can be prevented, and the larger the crosslinking degree in a coating film is, the smaller the free space in the network structure is, the smaller the migration of the pigment is, and pigment migration behavior under the condition of reducing aging can be prevented; meanwhile, after the aminosilane is modified, the flexibility and weather resistance of the reflective coating can be improved, and the service life of the backboard can be prolonged.
The fluorine-containing coating curing agent is selected by taking into consideration the reactivity with the main resin, the blocking resistance after the initial curing of the coating, the weather resistance and other factors.
The curing agent is selected from HDI polyisocyanate curing agents, preferably HDI trimer polyisocyanate curing agents. The HDI trimer has excellent ultraviolet resistance, higher reaction activity and high hardness of a coating; blocked HDI trimer polyisocyanate has excellent moisture and heat resistance, can not be completely unblocked in a high temperature section, and can be slowly unblocked in a long-time damp and heat aging process to release-NCO groups which are generated by decomposing and breaking-OH or-NH of macromolecular chain segments in a coating 2 The segments are crosslinked, so that the crosslinking degree of the coating after humid heat aging is ensured, and the effective winding of the resin molecular chain and the EVA molecular chain in the coating is ensured. The HDI curing agent is used together with a reaction catalyst, and the addition of the catalyst can accelerate the reaction of-NCO and-OH to a certain extent, so that the anti-blocking performance of the coating is improved.
The solvent is one or more of ethanol, n-butanol, ethyl acetate, butyl acetate, propylene glycol methyl ether acetate, propylene glycol ethyl ether acetate, xylene and butanone.
The auxiliary agent is one or more selected from ultraviolet absorber, dispersant, leveling agent, filler and coupling agent.
The ultraviolet absorbent is at least one selected from 2-hydroxy-4-methoxybenzophenone, 2- (2-hydroxy-4-benzoyloxy) -5-chlorobenzotriazole, 2- (2-hydroxy-3, 5-di-tertiary phenyl) -5-chlorobenzotriazole, 2-hydroxy-4-n-octoxybenzophenone, 2- (4, 6-bis (2, 4-dimethylphenyl) -1,3, 5-triazin-2-yl) -5-octylphenol and bis-ethylhexyloxyphenol methoxyphenyl triazine. The addition of the ultraviolet absorber can further improve the weather resistance of the back plate.
The dispersing agent is an organic pigment dispersing agent, and the addition of the pigment dispersing agent can not only improve the storage stability of the liquid coating and change the rheological property of the liquid coating, but also improve the comprehensive performance of a coating film and the local supersaturation phenomenon caused by the comprehensive performance of the coating film. The pigment dispersing agent is selected from high molecular dispersing agents, pigment particles are more stable under the action of the polymer dispersing agent, and the leveling property is increased. The high molecular type dispersing agent is one or more selected from polyethyleneimine block copolymer type dispersing agent, acrylic ester high molecular type dispersing agent and polyurethane or polyester type high molecular dispersing agent.
The leveling agent is one or more selected from polyurethane leveling agents, polyorganosiloxane leveling agents and polyacrylate leveling agents. The leveling agent is a common coating auxiliary agent, and can promote the coating to form a flat, smooth and even coating film in the drying and film forming process.
The filler is a heat radiation filler and is one or more selected from aluminum oxide, zirconium oxide, boron oxide, titanium dioxide, silicon carbide, aluminum nitride, boron nitride, silicon nitride and gallium nitride. The heat dissipation filler can improve the heat dissipation performance of the reflecting layer, reduce the temperature of the back plate and improve the strength of the reflecting layer.
The coupling agent is one or more of vinyl trimethoxy silane, 3-glycidol ether oxygen propyl trimethoxy silane, N-beta-aminoethyl-gamma-aminopropyl methyl dimethoxy silane, isopropyl tri (dioctyl pyrophosphoryl oxy) titanate and di (dioctyl pyrophosphoryl) ethylene titanate.
The thickness of the reflecting layer is 5-12 mu m, the weather resistance and the infrared band reflectivity of the backboard can be reduced when the thickness of the reflecting layer is too thin, the service lives of the backboard and the photovoltaic cell are further influenced, and poor film forming quality and high cost can be caused when the thickness of the reflecting layer is too thick.
The thickness of the supporting base material is 100-800 mu m, preferably 150-300 mu m, the supporting base material is used as a main body material of the whole backboard, and the thickness of the film is larger than that of the film coating base material; too thin can not play a good role in supporting and protecting components, and too thick can increase the weight of the backboard and increase the production cost.
The supporting substrate comprises a single-layer or multi-layer film layer, and the material of the supporting substrate is at least one selected from polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polyethylene, polypropylene and polyimide.
The weather-resistant layer is selected from a weather-resistant coating or a weather-resistant film layer;
the weather-resistant layer is made of the same material as the reflecting layer when being a weather-resistant coating;
when the weather-resistant layer is a weather-resistant film layer, the weather-resistant film layer is made of at least one of polyvinyl fluoride, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, ethylene-chlorotrifluoroethylene copolymer and modified polyvinyl chloride.
The preparation method of the high-reflection black solar backboard comprises the following steps:
(1) Adding fluorine-containing resin, organic pigment, solvent and auxiliary agent into a stirring kettle according to the formula dosage, stirring at a high speed, grinding by a sand mill, adding a curing agent, a diluent and the solvent, and stirring to obtain a uniformly dispersed coating liquid;
(2) Coating the coating liquid prepared in the step (1) on the outer surface of the supporting matrix subjected to surface corona treatment, forcibly drying and solidifying the supporting matrix through a temperature gradient tunnel oven at 60-150 ℃ to obtain the supporting matrix coated with the reflecting layer coating, and rolling the supporting matrix after cooling;
(3) After one surface of the supporting matrix is coated, the other surface is coated according to the same operation steps, and the black photovoltaic backboard with the double-sided coating is obtained after the coating is completed; or coating an adhesive on the other side of the support matrix coated with the reflective layer coating obtained in the step (2), and then adhering a layer of weather-resistant film to obtain the black high-reflection solar cell backboard.
The black high-reflection solar cell backboard is applied to the preparation of the high-reflection solar cell.
Compared with the prior commonly used high-reflection black backboard technology, the invention has the following beneficial effects:
(1) Compared with the prior art, the black organic pigment adopted by the invention has an inorganic-organic core-shell structure, namely, the surface of the organic pigment core is compositely coated by the inorganic-organic double shells, so that the pigment has more excellent dispersibility, wet heat resistance, ultraviolet resistance and acid-base resistance, can prevent pigment migration, and can solve the problem that the organic pigment is not resistant to ultraviolet irradiation. The invention adopts inorganic SiO 2 Coating the inner shell with uniform and compact SiO 2 The material has excellent water and oxygen blocking, heat dissipation and weather resistance, can provide water blocking protection for pigment cores, greatly improves the wet and heat stability of the reflective coating, and prevents migration and precipitation of pigments after aging; and SiO 2 The material has low ultraviolet light transmittance and can prevent ultraviolet light from damaging the organic pigment. The polymer shell is coated on SiO 2 The surface of the inner shell improves the compatibility of the pigment and the main resin of the reflecting layer, and improves the adhesive force between the pigment and the coating of the reflecting layer.
(2) According to the invention, the amino silane modified polyfunctional acrylate is used as a coating diluent, and the polyfunctional acrylic monomer is polymerized to enable the coating to quickly form a three-dimensional network structure, so that the network structure has a fixing effect on pigment particles in the coating, migration of the pigment particles can be prevented, and the larger the crosslinking degree in a coating film is, the smaller the free space in the network structure is, the smaller the migration of the pigment is, and pigment migration behavior under the condition of reducing aging can be prevented. Meanwhile, after the aminosilane is modified, the flexibility and weather resistance of the reflective coating are improved, and the adhesion with the EVA adhesive film is improved.
(3) The high-reflection black backboard has the characteristics of high reflectivity in the near infrared band, good heat dissipation of a coating and excellent weather resistance, can prevent pigment migration and improve the ultraviolet resistance of the pigment at the same time without additionally adding a barrier layer, and has simple process and low cost.
Drawings
Fig. 1 is a schematic structural view of a highly reflective black back plate according to the present invention.
Reference numerals: 1-reflecting layer, 2-supporting substrate, 3-weather-proof layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. The description herein is only intended to illustrate the invention and not to limit the invention, as far as the specific examples are concerned.
Fig. 1 is a schematic structural diagram of a highly reflective black back plate according to the present invention, which includes a support substrate 2, a reflective layer 1 coated on an inner surface of the support substrate, and a weather-resistant coating 3 formed on an outer surface of the support substrate 2.
The invention provides a high-reflection black solar backboard and a preparation method thereof, which are characterized in that the reflectivity of the backboard in a near infrared band is improved, the weather resistance of the backboard is improved, the migration of organic pigment is prevented, and the process is simple and easy to realize through the formula design of a coating composition.
The present invention will be described in further detail with reference to specific examples.
The diluent used in the examples below was purchased from the manufacturer and model number:
basic example 1: process for preparing organic pigment
Step 1: preparation of inner shell SiO by electrostatic self-assembly technology 2 ：
Firstly, dispersing an organic pigment (core) into PSS (sodium poly-4-styrene sulfonate) aqueous solution by using a grinder, and then dispersing in deionized water after centrifugal washing for 3 times, wherein the surfaces of pigment particles are negatively charged; in ultrasoundAdding polydiallyl dimethyl ammonium chloride (Aldrich reagent company) solution into the organic pigment dispersion liquid under the condition of adsorbing, wherein the surface of the pigment is positively charged; the above steps were repeated 4 times. Then, adsorption with a nanosilica sol (Hongsheng chemical industry, shandong) was performed, followed by centrifugation and washing 3 times. Continuing to absorb the diallyl dimethyl ammonium chloride, repeating the operation for 3 times to finish the nano SiO 2 And (5) coating the inner shell layer. Step 1 may also be prepared by other methods such as the gel sol method.
Step 2: in situ polymerization to prepare a polymeric outer shell layer:
firstly, adding 500ml of ethanol into the organic pigment coated with the inner shell layer, stirring to form a dispersion liquid, and stirring for 30min; then preparing the monomers into a mixed solution according to the mass ratio, adding a proper amount of AIBN initiator (1-3 wt% of monomer weight), dissolving with a small amount of solvent NMP, adding 100ml of ethanol, dropwise adding the mixed solution into the organic pigment dispersion liquid coated with the inner shell layer, fully stirring for 4-6 hours at 60-80 ℃, washing the product for multiple times, and vacuum drying for 48 hours to obtain an organic-inorganic composite coating pigment sample.
The raw materials are as follows:
basic example 2: process for preparing diluents
Adding 0.5mol of multifunctional acrylate into a 500ml flask, mechanically stirring, heating to 70 ℃ in an oil bath, slowly dripping 0.25mol of aminosilane, and stirring for reaction for 24 hours to obtain the multifunctional acrylate.
The raw materials are as follows:
example 1
The embodiment provides a high-reflection black solar cell backboard, which sequentially comprises a reflecting layer, a supporting substrate and a weather-resistant layer from inside to outside. Wherein the material of the supporting substrate layer is PET, and the thickness of the supporting substrate layer is 150 mu m. The reflective layer has a thickness of 5 mu m, and is formed by coating a coating liquid and thermally curing the coating liquid, wherein the raw material formula of the reflective layer coating liquid comprises the following components in parts by weight:
the preparation method of the high-reflection black solar cell backboard comprises the following steps:
(1) Putting fluorine-containing resin, organic pigment, solvent and auxiliary agent into a stirring kettle according to parts by weight, stirring at high speed for 3 hours, grinding for 2 times by a sand mill, adding curing agent, diluent and solvent, and stirring to obtain uniformly dispersed reflective layer coating liquid;
(2) Coating the coating liquid obtained in the step (1) on the outer surface of the supporting matrix subjected to surface corona treatment, forcibly drying and solidifying for 10min through a temperature gradient tunnel oven at 60-150 ℃ to obtain the supporting matrix coated with the reflecting layer coating, and rolling the supporting matrix for standby after cooling; the thickness of the reflecting layer is 5 mu m;
(3) And after the coating of one side of the supporting substrate is finished, the other side of the supporting substrate is coated again according to the same operation steps to obtain a weather-resistant layer, and the thickness of the weather-resistant layer is 12 mu m, so that the black photovoltaic backboard with the double-sided coating is obtained.
Example 2
The embodiment provides a high-reflection black solar cell backboard, which sequentially comprises a reflecting layer, a supporting substrate and a weather-resistant layer from inside to outside. Wherein the material of the supporting substrate layer is PET, and the thickness of the supporting substrate layer is 200 mu m. The reflective layer has a thickness of 8 mu m, and is formed by coating the reflective layer coating liquid and thermally curing the coating liquid, wherein the raw material formula of the reflective layer coating liquid comprises the following components in parts by weight:
the preparation method of the high-reflection black solar cell backboard comprises the following steps:
(1) Putting fluorine-containing resin, organic pigment, solvent and auxiliary agent into a stirring kettle according to parts by weight, stirring at high speed for 3 hours, grinding for 2 times by a sand mill, adding curing agent, diluent and solvent, and stirring to obtain uniformly dispersed reflective layer coating liquid;
(2) Coating the coating liquid obtained in the step (1) on the outer surface of the supporting substrate subjected to surface corona treatment, forcibly drying and solidifying for 1min through a temperature gradient tunnel oven at 60-150 ℃ to obtain the supporting substrate coated with the reflecting layer coating, cooling and rolling for later use, wherein the thickness of the reflecting layer is 8 mu m;
(3) And after the coating of one side of the supporting substrate is finished, the other side of the supporting substrate is coated again according to the same operation steps to obtain a weather-resistant layer, and the thickness of the weather-resistant layer is 12 mu m, so that the black photovoltaic backboard with the double-sided coating is obtained.
Example 3
The embodiment provides a high-reflection black solar cell backboard, which sequentially comprises a reflecting layer, a supporting substrate and a weather-resistant layer from inside to outside. Wherein the material of the supporting substrate layer is PET, and the thickness of the supporting substrate layer is 180 mu m. The thickness of the reflecting layer is 10 mu m, the reflecting layer is formed by coating the reflecting layer coating liquid and thermally curing the reflecting layer coating liquid, and the raw material formula of the reflecting layer coating liquid comprises the following components in parts by weight:
the preparation method of the high-reflection black solar cell backboard comprises the following steps:
(1) Putting fluorine-containing resin, organic pigment, solvent and auxiliary agent into a stirring kettle according to parts by weight, stirring at high speed for 3 hours, grinding for 2 times by a sand mill, adding curing agent, diluent and solvent, and stirring to obtain uniformly dispersed reflective layer coating liquid;
(2) Coating the reflective layer coating liquid in the step (1) on the outer surface of the supporting substrate subjected to surface corona treatment, forcibly drying and solidifying for 30min through a temperature gradient tunnel oven at 60-150 ℃ to obtain the supporting substrate coated with the reflective layer coating, cooling and rolling for later use, wherein the thickness of the reflective layer is 10 mu m;
(3) And after the coating of one side of the supporting substrate is finished, the other side of the supporting substrate is coated again according to the same operation steps to obtain a weather-resistant layer, and the thickness of the weather-resistant layer is 12 mu m, so that the black photovoltaic backboard with the double-sided coating is obtained.
Example 4
The embodiment provides a high-reflection black solar cell backboard, which sequentially comprises a reflecting layer, a supporting substrate and a weather-resistant layer from inside to outside. Wherein the material of the supporting substrate layer is PET, and the thickness of the supporting substrate layer is 250 μm. The thickness of the reflecting layer is 12 mu m, the reflecting layer is formed by coating the reflecting layer coating liquid and thermally curing the reflecting layer coating liquid, and the raw material formula of the reflecting layer coating liquid comprises the following components in parts by weight:
the preparation method of the high-reflection black solar cell backboard comprises the following steps:
(1) Putting fluorine-containing resin, organic pigment, solvent and auxiliary agent into a stirring kettle according to parts by weight, stirring at high speed for 3 hours, grinding for 2 times by a sand mill, and stirring after adding curing agent, diluent and solvent to obtain uniformly dispersed coating liquid of the reflecting layer;
(2) Coating the coating liquid obtained in the step (1) on the outer surface of the supporting matrix subjected to surface corona treatment, forcibly drying and solidifying for 30min through a temperature gradient tunnel oven at 60-150 ℃ to obtain the supporting matrix coated with the reflecting layer coating, and rolling the supporting matrix for standby after cooling; the thickness of the reflecting layer is 12 mu m;
(3) And (3) coating an adhesive on the other side of the support substrate coated with the reflective layer coating, drying at 80 ℃ for 2min, then adhering a PVDF film with the weather resistance of 20 mu m, and curing at 80 ℃ for 2 days to obtain the black high-reflection solar cell backboard.
Example 5
The embodiment provides a high-reflection black solar cell backboard, which sequentially comprises a reflecting layer, a supporting substrate and a weather-resistant layer from inside to outside. Wherein the material of the supporting substrate layer is PET, and the thickness of the supporting substrate layer is 250 μm. The thickness of the reflecting layer is 12 mu m, the reflecting layer is formed by coating the reflecting layer coating liquid and thermally curing the reflecting layer coating liquid, and the raw material formula of the reflecting layer coating liquid comprises the following components in parts by weight:
the preparation method of the high-reflection black solar cell backboard comprises the following steps:
(1) Putting fluorine-containing resin, organic pigment, solvent and auxiliary agent into a stirring kettle according to parts by weight, stirring at high speed for 3 hours, grinding for 2 times by a sand mill, and stirring after adding curing agent, diluent and solvent to obtain uniformly dispersed coating liquid of the reflecting layer;
(2) Coating the coating liquid obtained in the step (1) on the outer surface of the supporting matrix subjected to surface corona treatment, forcibly drying and solidifying for 30min through a temperature gradient tunnel oven at 60-150 ℃ to obtain the supporting matrix coated with the reflecting layer coating, and rolling the supporting matrix for standby after cooling; the thickness of the reflecting layer is 12 mu m;
(3) And (3) coating an adhesive on the other side of the support substrate coated with the reflective layer coating, drying at 80 ℃ for 2min, then adhering a PVF film with the weather resistance of 25 mu m, and curing at 60 ℃ for 3 days to obtain the black high-reflection solar cell backboard.
Example 6
The embodiment provides a high-reflection black solar cell backboard, which sequentially comprises a reflecting layer, a supporting substrate and a weather-resistant layer from inside to outside. Wherein the material of the supporting substrate layer is PET, and the thickness of the supporting substrate layer is 200 mu m. The thickness of the reflecting layer is 10 mu m, the reflecting layer is formed by coating the reflecting layer coating liquid and thermally curing the reflecting layer coating liquid, and the raw material formula of the reflecting layer coating liquid comprises the following components in parts by weight:
the preparation method of the high-reflection black solar cell backboard comprises the following steps:
(1) Putting fluorine-containing resin, organic pigment, solvent and auxiliary agent into a stirring kettle according to parts by weight, stirring at high speed for 3 hours, grinding for 2 times by a sand mill, and stirring after adding curing agent, diluent and solvent to obtain uniformly dispersed coating liquid of the reflecting layer;
(2) Coating the coating liquid obtained in the step (1) on the outer surface of the supporting matrix subjected to surface corona treatment, forcibly drying and solidifying for 30min through a temperature gradient tunnel oven at 60-150 ℃ to obtain the supporting matrix coated with the reflecting layer coating, and rolling the supporting matrix for standby after cooling; the thickness of the reflecting layer is 10 mu m;
(3) And (3) coating an adhesive on the other side of the support substrate coated with the reflective layer coating, drying at 80 ℃ for 2min, then adhering a PVF film with the weather resistance of 25 mu m, and curing at 60 ℃ for 3 days to obtain the black high-reflection solar cell backboard.
Example 7
The embodiment provides a high-reflection black solar cell backboard, which sequentially comprises a reflecting layer, a supporting substrate and a weather-resistant layer from inside to outside. Wherein the material of the supporting substrate layer is PET, and the thickness of the supporting substrate layer is 200 mu m. The thickness of the reflecting layer is 10 mu m, the reflecting layer is formed by coating the reflecting layer coating liquid and thermally curing the reflecting layer coating liquid, and the raw material formula of the reflecting layer coating liquid comprises the following components in parts by weight:
the preparation method of the high-reflection black solar cell backboard comprises the following steps:
(1) Putting fluorine-containing resin, organic pigment, solvent and auxiliary agent into a stirring kettle according to parts by weight, stirring at high speed for 3 hours, grinding for 2 times by a sand mill, and stirring after adding curing agent, diluent and solvent to obtain uniformly dispersed coating liquid of the reflecting layer;
(2) Coating the coating liquid obtained in the step (1) on the outer surface of the supporting matrix subjected to surface corona treatment, forcibly drying and solidifying for 30min through a temperature gradient tunnel oven at 60-150 ℃ to obtain the supporting matrix coated with the reflecting layer coating, and rolling the supporting matrix for standby after cooling; the thickness of the reflecting layer is 10 mu m;
(3) And (3) coating an adhesive on the other side of the support substrate coated with the reflective layer coating, drying at 80 ℃ for 2min, then adhering a PVF film with the weather resistance of 25 mu m, and curing at 60 ℃ for 3 days to obtain the black high-reflection solar cell backboard.
Example 8
The embodiment provides a high-reflection black solar cell backboard, which sequentially comprises a reflecting layer, a supporting substrate and a weather-resistant layer from inside to outside. Wherein the material of the supporting substrate layer is PET, and the thickness of the supporting substrate layer is 200 mu m. The thickness of the reflecting layer is 10 mu m, the reflecting layer is formed by coating the reflecting layer coating liquid and thermally curing the reflecting layer coating liquid, and the raw material formula of the reflecting layer coating liquid comprises the following components in parts by weight:
the preparation method of the high-reflection black solar cell backboard comprises the following steps:
(1) Putting fluorine-containing resin, organic pigment, solvent and auxiliary agent into a stirring kettle according to parts by weight, stirring at high speed for 3 hours, grinding for 2 times by a sand mill, and stirring after adding curing agent, diluent and solvent to obtain uniformly dispersed coating liquid of the reflecting layer;
(2) Coating the coating liquid obtained in the step (1) on the outer surface of the supporting matrix subjected to surface corona treatment, forcibly drying and solidifying for 20min through a temperature gradient tunnel oven at 60-150 ℃ to obtain the supporting matrix coated with the reflecting layer coating, and rolling the supporting matrix for standby after cooling; the thickness of the reflecting layer is 10 mu m;
(3) And (3) coating an adhesive on the other side of the support substrate coated with the reflective layer coating, drying at 80 ℃ for 2min, then adhering a PVF film with the weather resistance of 20 mu m, and curing at 65 ℃ for 2 days to obtain the black high-reflection solar cell backboard.
Comparative example 1
The comparative example provides a black solar cell back panel, which comprises a reflecting layer, a supporting substrate and a weather-resistant layer from inside to outside. Wherein the material of the supporting substrate layer is PET, and the thickness of the supporting substrate layer is 150 mu m. The reflective layer has a thickness of 5 mu m, and is formed by coating the reflective layer coating liquid and thermally curing the coating liquid, wherein the raw material formula of the reflective layer coating liquid comprises the following components in parts by weight:
the preparation method of the black solar cell backboard of the comparative example comprises the following steps:
(1) Putting fluorine-containing resin, organic pigment, solvent and auxiliary agent into a stirring kettle according to parts by weight, stirring at high speed for 3 hours, grinding for 2 times by a sand mill, adding curing agent, diluent and solvent, and stirring to obtain uniformly dispersed reflective layer coating liquid;
(2) Coating the coating liquid obtained in the step (1) on the outer surface of the supporting matrix subjected to surface corona treatment, forcibly drying and solidifying for 10min through a temperature gradient tunnel oven at 60-150 ℃ to obtain the supporting matrix coated with the reflecting layer coating, and rolling the supporting matrix for standby after cooling; the thickness of the reflecting layer is 5 mu m;
(3) And after the coating of one side of the supporting substrate is finished, the other side of the supporting substrate is coated again according to the same operation steps to obtain a weather-resistant layer, and the thickness of the weather-resistant layer is 12 mu m, so that the black photovoltaic backboard with the double-sided coating is obtained.
Comparative example 2
The comparative example provides a black solar cell back panel, which comprises a reflecting layer, a supporting substrate and a weather-resistant layer from inside to outside. Wherein the material of the supporting substrate layer is PET, and the thickness of the supporting substrate layer is 150 mu m. The reflective layer has a thickness of 5 mu m, and is formed by coating the reflective layer coating liquid and thermally curing the coating liquid, wherein the raw material formula of the reflective layer coating liquid comprises the following components in parts by weight:
the preparation method of the black solar cell backboard of the comparative example comprises the following steps:
(1) Putting fluorine-containing resin, organic pigment, solvent and auxiliary agent into a stirring kettle according to parts by weight, stirring at high speed for 3 hours, grinding for 2 times by a sand mill, adding curing agent, diluent and solvent, and stirring to obtain uniformly dispersed reflective layer coating liquid;
(2) Coating the coating liquid obtained in the step (1) on the outer surface of the supporting matrix subjected to surface corona treatment, forcibly drying and solidifying for 10min through a temperature gradient tunnel oven at 60-150 ℃ to obtain the supporting matrix coated with the reflecting layer coating, and rolling the supporting matrix for standby after cooling; the thickness of the reflecting layer is 5 mu m;
(3) And after the coating of one side of the supporting substrate is finished, the other side of the supporting substrate is coated again according to the same operation steps to obtain a weather-resistant layer, and the thickness of the weather-resistant layer is 12 mu m, so that the black photovoltaic backboard with the double-sided coating is obtained.
Comparative example 3
The comparative example provides a black solar cell backboard, which comprises a reflecting layer, a supporting base material and a weather-proof layer from inside to outside. Wherein the material of the supporting substrate layer is PET, and the thickness of the supporting substrate layer is 150 mu m. The reflective layer has a thickness of 5 mu m, and is formed by coating the reflective layer coating liquid and thermally curing the coating liquid, wherein the raw material formula of the reflective layer coating liquid comprises the following components in parts by weight:
the preparation method of the black solar cell backboard of the comparative example comprises the following steps:
(1) Putting fluorine-containing resin, black pigment, solvent and auxiliary agent into a stirring kettle according to parts by weight, stirring at high speed for 3 hours, grinding for 2 times by a sand mill, and stirring after adding curing agent, diluent and solvent to obtain uniformly dispersed coating liquid of the reflecting layer;
(2) Coating the coating liquid obtained in the step (1) on the outer surface of the supporting matrix subjected to surface corona treatment, forcibly drying and solidifying for 10min through a temperature gradient tunnel oven at 60-150 ℃ to obtain the supporting matrix coated with the reflecting layer coating, and rolling the supporting matrix for standby after cooling; the thickness of the reflecting layer is 5 mu m;
(3) And after the coating of one side of the supporting substrate is finished, the other side of the supporting substrate is coated again according to the same operation steps to obtain a weather-resistant layer, and the thickness of the weather-resistant layer is 12 mu m, so that the black photovoltaic backboard with the double-sided coating is obtained.
Comparative example 4
The comparative example provides a black solar cell back panel, which comprises a reflecting layer, a supporting substrate and a weather-resistant layer from inside to outside. Wherein the material of the supporting substrate layer is PET, and the thickness of the supporting substrate layer is 150 mu m. The reflective layer has a thickness of 5 mu m, and is formed by coating the reflective layer coating liquid and thermally curing the coating liquid, wherein the raw material formula of the reflective layer coating liquid comprises the following components in parts by weight:
the preparation method of the black solar cell backboard of the comparative example comprises the following steps:
(1) Putting fluorine-containing resin, black pigment, solvent and auxiliary agent into a stirring kettle according to parts by weight, stirring at high speed for 3 hours, grinding for 2 times by a sand mill, adding curing agent, diluent and solvent, and stirring to obtain uniformly dispersed reflective layer coating liquid;
(2) Coating the coating liquid obtained in the step (1) on the outer surface of the supporting matrix subjected to surface corona treatment, forcibly drying and solidifying for 10min through a temperature gradient tunnel oven at 60-150 ℃ to obtain the supporting matrix coated with the reflecting layer coating, and rolling the supporting matrix for standby after cooling; the thickness of the reflecting layer is 5 mu m;
(3) And after the coating of one side of the supporting substrate is finished, the other side of the supporting substrate is coated again according to the same operation steps to obtain a weather-resistant layer, and the thickness of the weather-resistant layer is 12 mu m, so that the black photovoltaic backboard with the double-sided coating is obtained.
The black solar cell back sheet materials obtained in examples 1 to 8 and comparative examples 1 to 4 were subjected to basic performance test by the following method to verify the reliability of the high reflection black solar back sheet.
The method comprises the following steps:
1. reflectance test: the reflectance measuring apparatus designed according to the standards GB/T13452.3-92, GB/T9270-88, GB/T5211.17-88 and ISO3906-80 is used for testing, and the test results are shown in Table 1.
2. Humid heat aging test conditions: test methods refer to standard GB/T29848 ethylene-vinyl acetate copolymer (EVA) adhesive film for packaging photovoltaic modules. Test conditions: +85 ℃, 85% relative humidity, test time 2000h.
3. Peel strength with EVA test of peel strength with EVA: peel strength testing was performed according to GB/T2790. The test results are shown in Table 1.
4. The test method refers to the standard GB/T31034 insulating backboard for crystalline silicon solar cell module. Sample size: 200mm by 200mm. Test conditions: +25℃,50% RH. The test results are shown in Table 2.
5. Component power: the detection was carried out according to IEC61215-22016:4.2, and the test results are shown in Table 2.
6. Component temperature: the test time is 2022, 8 months, 1 day, 3:00 pm, and the place is Suzhou city, high new district.
7. Weather resistance stability of the reflective layer: visual observation of color change was carried out by ultraviolet aging of 300kwh/m 2 Samples with a color of the back reflective layer consistent with the original color are denoted by.
Table 1 partial performance parameters of examples and comparative examples backsheet samples
From the above data, it is clear that comparative examples 1-2, while still employing organic pigments, have significantly lower reflectivities at 400-1200nm, 700-1200nm than examples 1-8, as they are not encapsulated by the inorganic-organic core-shell technology of the present invention. Comparative example 3 and comparative example 4 used carbon black and an inorganic pigment instead of an organic pigment, respectively, but the reflectance was significantly lowered.
As is clear from the peel strength data with EVA in the table, examples 1 to 8 are superior to comparative examples 1 to 4 in peel strength before and after wet heat due to the use of the aminosilane-modified polyfunctional acrylate monomer. The modified diluent is adopted, so that the bonding capability of the coating and EVA can be effectively improved.
Table 2 partial performance parameters of examples and comparative examples backsheet samples
As can be seen from the data in Table 2, examples 1-8 have better reflectivity in the near infrared (700-1200 nm) and therefore the component temperature is much lower than comparative examples 1-4 and the component maximum power is much higher than comparative examples 1-4. In terms of color migration, examples 1-8 adopted double-layer (inorganic/organic) core-shell modification of organic pigment particles, and adopted novel diluents to enable the coating to form a three-dimensional grid structure to inhibit pigment particle migration, so that bleeding and pigment migration phenomena are not generated at the interface between the back plate reflecting layer and the EVA adhesive film after wet and hot testing. According to the technical schemes of comparative examples 1-4, pigment color bleeding migration phenomenon occurs due to the fact that pigment core-shell coating is not carried out, a modified diluent is not adopted, and the color changes after ultraviolet aging.
The above description of the embodiments is only for aiding in the understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

Claims (10)

1. The utility model provides a high reflection black solar back board which characterized in that: the high-reflection black solar backboard sequentially comprises a reflecting layer, a supporting substrate and a weather-resistant layer from inside to outside, wherein the reflecting layer is coated on the surface of the supporting substrate by a reflecting layer coating liquid, and a black reflecting layer film is obtained after curing;
the coating liquid comprises the following components in parts by weight:
30-50 parts of fluorine-containing resin;
5-10 parts of organic pigment;
1-20 parts of a diluent;
1-5 parts of curing agent;
10-30 parts of a solvent;
1-10 parts of an auxiliary agent;
the organic pigment is in a core-shell structure, the core is the organic pigment, the shell is composed of an inner shell and an outer shell, and the inner shell is inorganic SiO 2 The shell is a high polymer layer, and the core-shell structure is a core-inner shell-outer shell in sequence from inside to outside; the mass ratio of the core to the shell in the core-shell structure is 0.3-3:1;
the high molecular polymer is modified polyacrylic resin; the modified polyacrylic resin is selected from one or more of organosilicon modified acrylic resin and fluorosilicone modified acrylic resin;
the diluent is aminosilane modified polyfunctional acrylate, and the aminosilane modified polyfunctional acrylate is obtained by Michael addition reaction of aminosilane and polyfunctional acrylic monomer;
the aminosilane is selected from one or more of N-cyclohexyl-3-aminomethyl dimethoxy silane, cyclohexyl methyl dimethoxy silane, N-cyclohexyl-gamma-aminopropyl methyl dimethoxy silane, N-methylaminopropyl methyl dimethoxy silane and N- (6-amino hexyl) aminomethyl triethoxy silane;
the polyfunctional acrylic monomer is selected from one or more of trimethylolpropane triacrylate, pentaerythritol triacrylate (PETA), trimethylolpropane trimethacrylate, 9-ethoxytrimethylolpropane trimethacrylate, tris (2-hydroxyethyl) isocyanuric acid triacrylate, propoxylated trimethylolpropane triacrylate, 15-ethoxytrimethylolpropane triacrylate, 9-ethoxytrimethylolpropane triacrylate, dipentaerythritol hexaacrylate, ditrimethylolpropane tetraacrylate and pentaerythritol tetraacrylate.
2. The highly reflective black solar back sheet of claim 1, wherein: the fluorine-containing resin is selected from one or more of polyvinylidene fluoride, polytrifluoroethylene, polytetrafluoroethylene, monofluoroethylene-vinyl ether copolymer, monofluoroethylene-vinyl ester copolymer, vinylidene fluoride-vinyl ether, vinylidene fluoride-vinyl ester, trifluorochloroethylene-vinyl ether, trifluorochloroethylene-vinyl ester, tetrafluoroethylene-vinyl ether and tetrafluoroethylene-vinyl ester.
3. The highly reflective black solar back sheet of claim 1, wherein: the curing agent is selected from HDI polyisocyanate curing agents.
4. The highly reflective black solar back sheet of claim 1, wherein: the solvent is one or more of ethanol, n-butanol, ethyl acetate, butyl acetate, propylene glycol methyl ether acetate, propylene glycol ethyl ether acetate, xylene and butanone.
5. The highly reflective black solar back sheet of claim 1, wherein: the auxiliary agent is one or more selected from ultraviolet absorber, dispersant, leveling agent, filler and coupling agent.
6. The highly reflective black solar back sheet of claim 1, wherein: the thickness of the reflecting layer is 5-12 mu m; the thickness of the supporting base material is 100-800 mu m.
7. The highly reflective black solar back sheet of claim 1, wherein: the supporting substrate comprises a single-layer or multi-layer film layer, and the material of the supporting substrate is at least one selected from polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polyethylene, polypropylene and polyimide.
8. The highly reflective black solar back sheet of claim 1, wherein: the weather-resistant layer is selected from a weather-resistant coating or a weather-resistant film layer;
the weather-resistant layer is made of the same material as the reflecting layer when being a weather-resistant coating;
when the weather-resistant layer is a weather-resistant film layer, the weather-resistant film layer is made of at least one of polyvinyl fluoride, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, ethylene-chlorotrifluoroethylene copolymer and modified polyvinyl chloride.
9. The method for manufacturing a high reflection black solar back sheet according to any one of claims 1 to 8, wherein: the method comprises the following steps:
(1) Adding fluorine-containing resin, organic pigment, solvent and auxiliary agent into a stirring kettle according to the formula dosage, stirring at a high speed, grinding by a sand mill, adding a curing agent, a diluent and the solvent, and stirring to obtain uniformly dispersed coating liquid;
(2) Coating the coating liquid prepared in the step (1) on the outer surface of the supporting matrix subjected to surface corona treatment, forcibly drying and solidifying the supporting matrix through a temperature gradient tunnel oven at 60-150 ℃ to obtain the supporting matrix coated with the reflecting layer coating, and rolling the supporting matrix after cooling;
(3) After one surface of the supporting matrix is coated, the other surface is coated according to the same operation steps, and the black photovoltaic backboard with the double-sided coating is obtained after the coating is completed; or coating an adhesive on the other side of the support matrix coated with the reflective layer coating obtained in the step (2), and then adhering a layer of weather-resistant film to obtain the black high-reflection solar cell backboard.
10. Use of the highly reflective black solar back sheet according to any one of claims 1 to 8 or the highly reflective black solar back sheet prepared by the preparation method according to claim 9 for the preparation of a solar cell.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109713069A (en) * 2018-12-21 2019-05-03 苏州赛伍应用技术股份有限公司 A kind of black high reflection solar cell backboard and preparation method thereof
CN111732847A (en) * 2020-06-10 2020-10-02 苏州福斯特光伏材料有限公司 Black high-reflection composition, coating, pellet and solar cell back sheet
CN114420781A (en) * 2022-01-11 2022-04-29 苏州赛伍应用技术股份有限公司 Blue high-reflection solar cell backboard
CN115477867A (en) * 2022-09-30 2022-12-16 苏州福斯特光伏材料有限公司 Pigment composition, coating composition, back sheet and preparation method thereof, and photovoltaic module
CN115714147A (en) * 2022-11-22 2023-02-24 福斯特(嘉兴)新材料有限公司 Photovoltaic back sheet and photovoltaic module
CN116042025A (en) * 2023-01-13 2023-05-02 苏州赛伍应用技术股份有限公司 Coating composition, preparation method thereof and high-weather-resistance and high-reflection black solar cell backboard comprising coating composition

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109713069A (en) * 2018-12-21 2019-05-03 苏州赛伍应用技术股份有限公司 A kind of black high reflection solar cell backboard and preparation method thereof
CN111732847A (en) * 2020-06-10 2020-10-02 苏州福斯特光伏材料有限公司 Black high-reflection composition, coating, pellet and solar cell back sheet
CN114420781A (en) * 2022-01-11 2022-04-29 苏州赛伍应用技术股份有限公司 Blue high-reflection solar cell backboard
CN115477867A (en) * 2022-09-30 2022-12-16 苏州福斯特光伏材料有限公司 Pigment composition, coating composition, back sheet and preparation method thereof, and photovoltaic module
CN115714147A (en) * 2022-11-22 2023-02-24 福斯特(嘉兴)新材料有限公司 Photovoltaic back sheet and photovoltaic module
CN116042025A (en) * 2023-01-13 2023-05-02 苏州赛伍应用技术股份有限公司 Coating composition, preparation method thereof and high-weather-resistance and high-reflection black solar cell backboard comprising coating composition

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