CN112802909A - Easy-to-clean solar photovoltaic back plate and preparation process thereof - Google Patents

Easy-to-clean solar photovoltaic back plate and preparation process thereof Download PDF

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Publication number
CN112802909A
CN112802909A CN202110059896.0A CN202110059896A CN112802909A CN 112802909 A CN112802909 A CN 112802909A CN 202110059896 A CN202110059896 A CN 202110059896A CN 112802909 A CN112802909 A CN 112802909A
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solar photovoltaic
solid inorganic
parts
easy
inorganic substance
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CN112802909B (en
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蔡书义
焦华
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Zhejiang Sinopoly Materials Co ltd
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Zhejiang Sinopoly Materials 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
    • 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
    • H01L31/02—Details
    • H01L31/0216—Coatings
    • H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/02167—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • 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
    • H01L31/02—Details
    • H01L31/0236—Special surface textures
    • H01L31/02366—Special surface textures of the substrate or of a layer on the substrate, e.g. textured ITO/glass substrate or superstrate, textured polymer layer on glass substrate
    • 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
    • H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
    • 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
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/10—Cleaning arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Microelectronics & Electronic Packaging (AREA)
  • Electromagnetism (AREA)
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Abstract

The invention relates to an easy-to-clean solar photovoltaic back plate which at least comprises an inner layer, an outer layer connected with the inner layer and a cleaning coating connected with the outer layer from top to bottom, wherein the cleaning coating has a mastoid structure, and the raw materials for preparing the cleaning coating at least comprise an adhesive and a solid inorganic substance. The inventor compounds solid inorganic matters with certain mass ratio and grain diameter ratio in the cleaning coating, so that the two solid inorganic matters form a convex structure with two layers of certain gaps in the cleaning coating, pollutants can be well prevented from being deposited on the solar photovoltaic back plate, the anti-fouling capacity of the cleaning coating is improved, the solid inorganic matters with small grain diameters are treated by using polyethylene wax, the hydrophobic performance of the whole solar photovoltaic back plate can be further improved, the two layers of convex structures in the cleaning coating are more regular, and the anti-fouling performance of the whole solar photovoltaic back plate is further improved.

Description

Easy-to-clean solar photovoltaic back plate and preparation process thereof
Technical Field
The invention belongs to the technical field of solar photovoltaics, and particularly relates to an easily-cleaned solar photovoltaic back plate and a preparation process thereof.
Background
With the development of science and technology, people pay more attention to the development and utilization of solar energy. Solar photovoltaic cells have also been developed rapidly in recent years as the most important form of solar energy utilization. The solar backboard is positioned on the back of the solar panel and plays a role in protecting and supporting the cell.
The solar photovoltaic back plate is used in a severe external environment for a long time, dust and sand grains are adhered to the solar photovoltaic back plate easily due to the action of wind force, the dust and the sand grains stored on the solar photovoltaic back plate can reduce the heat dissipation performance of the solar photovoltaic back plate, and the dust and the sand on the solar photovoltaic back plate are not easy to clear. The patent with the patent application number of CN201610533567.4 discloses a high-water-resistance easy-to-clean backboard material for a large-system photovoltaic module, the easy-to-clean backboard in the patent comprises an outer layer, a bonding layer, a base film layer and an inner layer, the outer main raw material is modified resin, the stain-resistant clean performance of the backboard is improved through the high hydrophobic performance of the modified resin, but the production process of the modified resin is complex, the industrialization difficulty is high, and the production cost is high. There is a need for an easy-to-clean solar photovoltaic back panel that can be produced by a simple process.
Disclosure of Invention
In order to solve the technical problems, the invention provides an easy-to-clean solar photovoltaic back plate which at least comprises an inner layer, an outer layer connected with the inner layer and a cleaning coating connected with the outer layer from top to bottom, wherein the cleaning coating has a mastoid structure, and the preparation raw materials of the cleaning coating at least comprise an adhesive and a solid inorganic substance.
Preferably, the viscosity of the adhesive is 10 to 30 Pa.s.
Preferably, the solid inorganic substance has a microsphere structure.
Preferably, the solid inorganic substance is a mixture of a solid inorganic substance A and a solid inorganic substance B, the particle size of the solid inorganic substance A is larger than that of the solid inorganic substance B, and the mass ratio of the solid inorganic substance A to the solid inorganic substance B is 1 (6-8).
Preferably, the ratio of the particle size of the solid inorganic substance A to the particle size of the solid inorganic substance B is (30-50): 1.
preferably, the raw materials for preparing the cleaning coating also comprise polyethylene wax.
Preferably, the raw material for preparing the inner layer and the outer layer at least comprises polyolefin.
Preferably, the polymerized monomer of the polyolefin comprises at least one of ethylene, propylene, butene, pentene, hexene, octene, 4-methyl-1-pentene, styrene, cyclopropene, cyclobutene, cyclopentene, cyclohexene, cycloheptene, 1, 3-cyclohexadiene, and 1, 4-cyclohexadiene.
The invention provides a preparation process of the easy-to-clean solar photovoltaic back plate, which is characterized by at least comprising the following steps of:
(1) preparing a solar photovoltaic back plate with an inner layer and an outer layer;
(2) and coating a cleaning coating on one side of the outer layer, and drying to obtain the solar photovoltaic back panel easy to clean.
The invention provides a solar photovoltaic module, which sequentially comprises the easy-to-clean solar photovoltaic back plate, a packaging material, a battery piece, the packaging material and packaging glass from bottom to top.
Has the advantages that: the inventor makes two kinds of solid inorganic matters form the convex structure in two layers of certain gaps in the clean coating through compounding the solid inorganic matters with certain mass ratio and grain diameter ratio in the clean coating, can be better prevent pollutants from depositing on the solar photovoltaic backboard, the anti-fouling capability of the clean coating is improved, the inventor finds that the solid inorganic matters with small grain diameters are treated through using high polymer wax, the hydrophobic property of the whole solar photovoltaic backboard can be further improved, the two layers of convex structures in the clean coating can be more regular, the anti-fouling performance of the whole solar photovoltaic backboard is further improved, the clean coating can be firmly adhered to the solar photovoltaic backboard through using epoxy resin, and the water vapor barrier property of the solar photovoltaic backboard can be improved.
Detailed Description
For purposes of the following detailed description, it is to be understood that the invention may assume various alternative variations and step sequences, except where expressly specified to the contrary. Moreover, other than in any operating examples, or where otherwise indicated, all numbers expressing, for example, quantities of ingredients used in the specification and claims are to be understood as being modified in all instances by the term "about". Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and attached claims are approximations that may vary depending upon the desired properties to be obtained by the present invention. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques.
Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
When a range of values is disclosed herein, the range is considered to be continuous and includes both the minimum and maximum values of the range, as well as each value between such minimum and maximum values. Further, when a range refers to an integer, each integer between the minimum and maximum values of the range is included. Further, when multiple range-describing features or characteristics are provided, the ranges may be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood to encompass any and all subranges subsumed therein. For example, a stated range from "1 to 10" should be considered to include any and all subranges between the minimum value of 1 and the maximum value of 10. Exemplary subranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, and the like.
In order to solve the technical problems, the invention provides an easy-to-clean solar photovoltaic back panel, which at least comprises an inner layer, an outer layer connected with the inner layer and a cleaning coating connected with the outer layer from top to bottom, wherein the cleaning coating has a mastoid structure, and the raw materials for preparing the cleaning coating at least comprise an adhesive and solid inorganic matters.
As a preferable technical scheme, the viscosity of the adhesive is 10-30 Pa.s.
As a preferable technical scheme, the solid inorganic substance is insoluble in water.
As a preferable technical scheme, the mass ratio of the adhesive to the solid inorganic substance is (3-5): 1.
as a preferable technical scheme, the main raw material of the adhesive is selected from at least one of starch, rosin, polyvinyl alcohol, carboxymethyl cellulose, polyurethane, polystyrene, acrylate, ethylene-vinyl acetate copolymer, epoxy resin and acrylic resin.
As a preferable technical scheme, the main raw material of the adhesive is epoxy resin.
The epoxy resin is a generic name of a polymer having two or more epoxy groups in a molecule. The epoxy resin is a polycondensation product of epichlorohydrin and bisphenol a or a polyol. Because of the chemical activity of the epoxy group, a plurality of compounds containing active hydrogen can be used for opening the ring, curing and crosslinking to generate a network structure, and the epoxy resin is a thermosetting resin. The epoxy resin has good adhesive force, bonding strength and chemical resistance.
As a preferred technical scheme, the solid inorganic substance has a microsphere structure.
As a preferred technical solution, the solid inorganic substance is a metal oxide.
As a preferable technical solution, the solid inorganic substance is at least one selected from silica, titania, zirconia, zinc oxide and yttria.
In a preferable technical scheme, the solid inorganic substance is a mixture of a solid inorganic substance A and a solid inorganic substance B, the particle size of the solid inorganic substance A is larger than that of the solid inorganic substance B, and the mass ratio of the solid inorganic substance A to the solid inorganic substance B is 1 (6-8).
As a preferable technical scheme, the ratio of the particle size of the solid inorganic substance a to the particle size of the solid inorganic substance B is (30-50): 1.
the inventor finds that the outer layer of the solar back plate is coated with the mixture of the adhesive, the two solid inorganic matters A and B with different particle sizes and different mass ratios, so that the anti-fouling capability of the photovoltaic back plate can be improved, the photovoltaic back plate is easy to clean, and the heat dissipation capability of the photovoltaic back plate is improved. The inventor thinks that the possible reason is that the granular solid inorganic matters with specific grain diameter ratio and mass ratio are compounded, the solid inorganic matters with large grain diameter tend to be deposited on the bottom layer compared with the solid inorganic matters with small grain diameter due to the action of gravity, while the solid inorganic matters with small grain diameter tend to be deposited in the gaps among the solid inorganic matters with large grain diameter firstly, a part of the solid inorganic matters with small grain diameter can be adhered on the surface of the solid inorganic matters with large grain diameter to become the mastoid of the solid inorganic matters with large grain diameter, the easy-cleaning layer can form a two-layer uneven structure, small and uniform gaps are formed between the granular solid inorganic matters to prevent the deposition of dust and other pollutants, the exposed parts of the solid inorganic matters A and the solid inorganic matters B are arc interfaces, the contact area between the arc interfaces and the pollutants is small, and the pollutants carried by water fall from the easy-cleaning coating, not easily resting on the easy-to-clean coating. The inventors have found that there are areas of non-uniformity and poor dirt resistance in the clear coating. The inventor finds that the particle size ratio between the solid inorganic substance A and the solid inorganic substance B is too large or too small, and the mass ratio between the solid inorganic substance A and the solid inorganic substance B is too large or too small, so that the nonuniformity can be increased.
As a preferred technical solution, the cleaning coating further comprises polyethylene wax.
As a preferred technical solution, the cleaning coating further comprises an ultraviolet absorber.
As a preferable technical scheme, the mass ratio of the polyethylene wax to the solid inorganic substance A is (2-3): 1.
as a preferable technical scheme, the average molecular weight of the polyethylene wax is more than 2000.
As a preferred technical scheme, the preparation method of the cleaning coating at least comprises the following steps:
(1) mixing the large-particle-size solid inorganic substance A, the ultraviolet absorbent and epoxy resin, stirring for 1h, adding an epoxy resin curing agent, stirring for 10min to obtain a mixture E, and coating the mixture E on the outer layer of the solar photovoltaic back panel;
(2) mixing the small-particle-size solid inorganic substance B with polyethylene wax at 150 ℃, stirring for 2 hours, and cooling to room temperature to obtain a polyethylene wax-modified solid inorganic substance B;
(3) and mixing the polyethylene wax modified solid inorganic substance B, the ultraviolet absorbent and the epoxy resin, stirring for 1h, adding the epoxy resin curing agent, stirring for 10min to obtain a mixture F, coating the mixture F on the mixture E, and drying to obtain the solar photovoltaic back panel coated with the clean coating.
The inventor uses polyethylene wax to modify the solid inorganic substance B with smaller particle size, so that the polyethylene wax is adhered to the surface of the solid inorganic substance B with smaller particle size, the hydrophobic property of the solid inorganic substance B is improved, and the anti-fouling capability of the solid inorganic substance B is improved. The inventor finds that after the solid inorganic substance B with the smaller particle size is modified by the polyethylene wax with a certain viscosity, the modified solid inorganic substance B is more easily adhered to the surface of the solid inorganic substance A with the larger particle size to form a regular mastoid structure due to the fact that the polyethylene wax has a certain anti-settling function, and meanwhile, the arrangement of the solid inorganic substance A and the arrangement of the solid inorganic substance B are more regular, so that gaps between the upper layer of bulges and the lower layer of bulges are more uniform, and the integral anti-pollution capacity, cleaning capacity and hydrophobic capacity of the integral solar photovoltaic back panel are further improved.
As a preferred technical scheme, the preparation raw materials of the inner layer and the outer layer at least comprise polyolefin.
As a preferred technical scheme, the polymerized monomer of the polyolefin at least comprises one of ethylene, propylene, butene, pentene, hexene, octene, 4-methyl-1-pentene, styrene, cyclopropene, cyclobutene, cyclopentene, cyclohexene, cycloheptene, 1, 3-cyclohexadiene and 1, 4-cyclohexadiene.
The invention provides a preparation process of the easy-to-clean solar photovoltaic back plate, which at least comprises the following steps:
(1) preparing a solar photovoltaic back plate with an inner layer and an outer layer;
(2) and (3) coating a cleaning coating on one side of the outer layer of the solar photovoltaic back plate, and drying to obtain the solar photovoltaic back plate easy to clean.
As a preferred technical scheme, the preparation process of the easy-to-clean solar photovoltaic back plate at least comprises the following steps:
(1) respectively conveying an outer layer preparation raw material and an inner layer preparation raw material to an extruder A and an extruder B of a backboard co-extrusion production line, extruding the materials through a die after melting and plasticizing to obtain a sheet-shaped melt, cooling and shaping the sheet-shaped melt through a cooling roller, and rolling or cutting the sheet-shaped melt to obtain a co-extrusion type solar photovoltaic backboard and form a structure combining the outer layer and the inner layer of the backboard;
(2) and coating a clean coating on the outer layer of the solar photovoltaic back panel, and drying to obtain the solar photovoltaic back panel easy to clean.
As a preferable technical scheme, the melting temperature in the step (1) is 130-350 ℃.
The invention provides a solar photovoltaic module, which sequentially comprises the easy-to-clean solar photovoltaic back plate, a packaging material, a battery piece, the packaging material and packaging glass from bottom to top.
In addition, the starting materials used are all commercially available, unless otherwise specified.
Example 1
In order to solve the above technical problems, a first aspect of the present embodiment provides an easy-to-clean solar photovoltaic back panel, which comprises, from top to bottom, an inner layer, an outer layer connected to the inner layer, and a clean coating connected to the outer layer, wherein the raw materials for preparing the outer layer comprise 50 parts of polypropylene a, 5 parts of polyethylene a, 2 parts of titanium dioxide, and 0.5 part of ultraviolet absorber a, the polypropylene a is obtained from yuyao city plastification ltd, and the brand number is: LH5544, said polyethylene a being available from suttley plastification ltd, su under the designation: FD0274, the titanium dioxide is purchased from Jiangsu Tianxing New Material Co., Ltd, and the ultraviolet absorber A is UV-531 and is purchased from Shanyi plastification. The inner layer is prepared from 55 parts of polypropylene B, 10 parts of polyethylene B, 2 parts of zinc oxide A and 0.5 part of ultraviolet absorber B, wherein the polypropylene B is purchased from PEIKONG plastication Co., Yao City, and has the brand number: LH5544, said polyethylene B being available from suttley plastification ltd, su under the designation: FD0274, wherein the zinc oxide A is purchased from Nanjing Baker New materials Co., Ltd, and the ultraviolet absorber B is UV-531 and is purchased from Shanyiplastification. The preparation raw materials of the clean coating comprise 40 parts of epoxy resin, 8 parts of 593 epoxy resin curing agent, 4 parts of polyethylene wax, 2 parts of solid inorganic substance A, 13 parts of solid inorganic substance B and 2 parts of ultraviolet absorbent, wherein the solid inorganic substance A is granular zinc oxide, the particle size of the zinc oxide is 1000nm, the zinc oxide is purchased from Lei Gong alloy materials Limited company in south Gong, and the product number is as follows: KR-ZnO-3, wherein the solid inorganic substance B is granular zirconia, the particle size of the zirconia is 30nm, the zirconia is purchased from New Material Co., Ltd, of Xuancheng Crystal-Rui, and the product number is VK-R30. The epoxy resin is purchased from Guangzhou TimenBorui trade company, and has the following goods number: 26645568, viscosity of 22 pas, and 593 epoxy hardener from lebond composites, chan, cat: 593-10, wherein the polyethylene wax is purchased from Tianjin Hengshengxin international trade company Limited, and the goods number is: A-C6A, average molecular weight 3000, and the UV absorber UV-531 available from Shanyiplasting.
In a second aspect of this embodiment, a process for preparing an easy-to-clean solar photovoltaic back panel is provided, including the following steps:
(1) mixing polypropylene A, polyethylene A, titanium dioxide and an ultraviolet absorbent A, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and extruding and granulating at 160 ℃ to obtain a first compound;
(2) mixing polypropylene B, polyethylene B, zinc oxide A and an ultraviolet absorbent B, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and performing extrusion granulation at 160 ℃ to obtain a second compound;
(3) respectively conveying the first compound A and the second compound B to an extruder A and an extruder B of a back plate co-extrusion production line, melting and plasticizing the first compound A and the second compound B at 165 ℃, extruding the mixture through a die to obtain a sheet-shaped melt, cooling and shaping the sheet-shaped melt through a cooling roller, and rolling or cutting the sheet-shaped melt to obtain a co-extrusion type solar photovoltaic back plate, so as to form a structure combining an outer layer and an inner layer of the back plate;
(4) mixing zinc oxide with 10 parts of epoxy resin and 1/2 parts of ultraviolet absorbent, stirring for 1h, adding 2 parts of 593 parts of epoxy resin curing agent, stirring for 10min to obtain a mixture E, and coating the mixture E on the outer layer of the solar photovoltaic back panel;
(5) mixing zirconium oxide and polyethylene wax at 150 ℃, stirring for 2 hours, cooling to room temperature, adding 30 parts of epoxy resin and 1/2 ultraviolet absorbent, stirring for 1 hour, adding 6 parts of 593 parts of epoxy resin curing agent, stirring for 10 minutes to obtain a mixture F, coating the mixture E, coating the mixture F on the mixture E, and drying to obtain the clean coating.
The third aspect of this embodiment provides a solar photovoltaic module, from the bottom up includes foretell easy clean solar photovoltaic backplate, packaging material, battery piece, packaging material and encapsulation glass in proper order.
Example 2
In order to solve the above technical problems, a first aspect of the present embodiment provides an easy-to-clean solar photovoltaic back panel, which comprises, from top to bottom, an inner layer, an outer layer connected to the inner layer, and a clean coating connected to the outer layer, wherein the raw materials for preparing the outer layer comprise 50 parts of polypropylene a, 5 parts of polyethylene a, 2 parts of titanium dioxide, and 0.5 part of ultraviolet absorber a, the polypropylene a is obtained from yuyao city plastification ltd, and the brand number is: LH5544, said polyethylene a being available from suttley plastification ltd, su under the designation: FD0274, the titanium dioxide is purchased from Jiangsu Tianxing New Material Co., Ltd, and the ultraviolet absorber A is UV-531 and is purchased from Shanyi plastification. The inner layer is prepared from 55 parts of polypropylene B, 10 parts of polyethylene B, 2 parts of zinc oxide A and 0.5 part of ultraviolet absorber B, wherein the polypropylene B is purchased from PEIKONG plastication Co., Yao City, and has the brand number: LH5544, said zinc oxide A from Nanjing Baker New materials Co., Ltd, and said UV absorber B UV-531 from Shanyiplastication. The preparation raw materials of the clean coating comprise 40 parts of epoxy resin, 8 parts of 593 epoxy resin curing agent, 4 parts of polyethylene wax, 2 parts of solid inorganic substance A, 13 parts of solid inorganic substance B and 2 parts of ultraviolet absorbent, wherein the ultraviolet absorbent is UV-531 and is purchased from Shanyiplastification, the solid inorganic substance A is granular zinc oxide, the particle size of the zinc oxide is 1000nm, the zinc oxide is purchased from Lei Gong alloy materials Co., Ltd, and the product number is as follows: KR-ZnO-3, wherein the solid inorganic substance B is granular silicon dioxide, the particle size of the silicon dioxide is 30nm, and the zirconia is purchased from New Material Co., Ltd of Xuancheng Crystal-Rui, and the product number is VK-SP 30F. The epoxy resin is purchased from Guangzhou TimenBorui trade company, and has the following goods number: 26645568, viscosity of 22 pas, and 593 epoxy hardener from lebond composites, chan, cat: 593-10, wherein the polyethylene wax is purchased from Tianjin Hengshengxin international trade company Limited, and the goods number is: A-C6A, average molecular weight 3000.
In a second aspect of this embodiment, a process for preparing an easy-to-clean solar photovoltaic back panel is provided, including the following steps:
(1) mixing polypropylene A, polyethylene A, titanium dioxide and an ultraviolet absorbent A, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and extruding and granulating at 160 ℃ to obtain a first compound;
(2) mixing polypropylene B, polyethylene B, zinc oxide A and an ultraviolet absorbent B, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and performing extrusion granulation at 160 ℃ to obtain a second compound;
(3) respectively conveying the first compound A and the second compound B to an extruder A and an extruder B of a back plate co-extrusion production line, melting and plasticizing the first compound A and the second compound B at 165 ℃, extruding the mixture through a die to obtain a sheet-shaped melt, cooling and shaping the sheet-shaped melt through a cooling roller, and rolling or cutting the sheet-shaped melt to obtain a co-extrusion type solar photovoltaic back plate, so as to form a structure combining an outer layer and an inner layer of the back plate;
(4) mixing zinc oxide with 10 parts of epoxy resin and 1/2 parts of ultraviolet absorbent, stirring for 1h, adding 2 parts of 593 parts of epoxy resin curing agent, stirring for 10min to obtain a mixture E, and coating the mixture E on the outer layer of the solar photovoltaic back panel;
(5) mixing silica and polyethylene wax at 150 ℃, stirring for 2 hours, cooling to room temperature, adding 30 parts of epoxy resin and 1/2 ultraviolet absorbent, stirring for 1 hour, adding 6 parts of 593 parts of epoxy resin curing agent, stirring for 10 minutes to obtain a mixture F, coating the mixture E, coating the mixture F on the mixture E, and drying to obtain the clean coating.
The third aspect of this embodiment provides a solar photovoltaic module, from the bottom up includes foretell easy clean solar photovoltaic backplate, packaging material, battery piece, packaging material and encapsulation glass in proper order.
Example 3
In order to solve the above technical problems, a first aspect of the present embodiment provides an easy-to-clean solar photovoltaic back panel, which comprises, from top to bottom, an inner layer, an outer layer connected to the inner layer, and a clean coating connected to the outer layer, wherein the raw materials for preparing the outer layer comprise 50 parts of polypropylene a, 5 parts of polyethylene a, 2 parts of titanium dioxide, and 0.5 part of ultraviolet absorber a, the polypropylene a is obtained from yuyao city plastification ltd, and the brand number is: LH5544, said polyethylene a being available from suttley plastification ltd, su under the designation: FD0274, the titanium dioxide is purchased from Jiangsu Tianxing New Material Co., Ltd, and the ultraviolet absorber A is UV-531 and is purchased from Shanyi plastification. The inner layer is prepared from 55 parts of polypropylene B, 10 parts of polyethylene B, 2 parts of zinc oxide A and 0.5 part of ultraviolet absorber B, wherein the polypropylene B is purchased from PEIKONG plastication Co., Yao City, and has the brand number: LH5544, said zinc oxide a being available from new materials, tokay, njaktt, inc, said UV absorber B being UV-531, available from santa plastica, said polyethylene B being available from gottelai plastica, su under the brand numbers: FD 0274. The preparation raw materials of the clean coating comprise 40 parts of epoxy resin, 8 parts of 593 epoxy resin curing agent, 4 parts of polyethylene wax, 2 parts of solid inorganic substance A, 13 parts of solid inorganic substance B and 2 parts of ultraviolet absorbent, wherein the solid inorganic substance A is granular zinc oxide, the particle size of the zinc oxide is 1000nm, the zinc oxide is purchased from Lei Gong alloy materials Co., Ltd, and the product number is as follows: KR-ZnO-3, the solid inorganic substance B is granular zirconia, the particle size of the zirconia is 20nm, the zirconia is purchased from Xifeng materials Co., Ltd, and the product number is XPI 01. The epoxy resin is purchased from Guangzhou TimenBorui trade company, and has the following goods number: 26645568, viscosity of 22 pas, and 593 epoxy hardener from lebond composites, chan, cat: 593-10, wherein the polyethylene wax is purchased from Tianjin Hengshengxin international trade company Limited, and the goods number is: A-C6A, average molecular weight 3000, and the UV absorber UV-531 available from Shanyiplasting.
In a second aspect of this embodiment, a process for preparing an easy-to-clean solar photovoltaic back panel is provided, including the following steps:
(1) mixing polypropylene A, polyethylene A, titanium dioxide and an ultraviolet absorbent A, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and extruding and granulating at 160 ℃ to obtain a first compound;
(2) mixing polypropylene B, polyethylene B, zinc oxide A and an ultraviolet absorbent B, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and performing extrusion granulation at 160 ℃ to obtain a second compound;
(3) respectively conveying the first compound A and the second compound B to an extruder A and an extruder B of a back plate co-extrusion production line, melting and plasticizing the first compound A and the second compound B at 165 ℃, extruding the mixture through a die to obtain a sheet-shaped melt, cooling and shaping the sheet-shaped melt through a cooling roller, and rolling or cutting the sheet-shaped melt to obtain a co-extrusion type solar photovoltaic back plate, so as to form a structure combining an outer layer and an inner layer of the back plate;
(4) mixing zinc oxide with 10 parts of epoxy resin and 1/2 parts of ultraviolet absorbent, stirring for 1h, adding 2 parts of 593 parts of epoxy resin curing agent, stirring for 10min to obtain a mixture E, and coating the mixture E on the outer layer of the solar photovoltaic back panel;
(5) mixing zirconium oxide and polyethylene wax at 150 ℃, stirring for 2 hours, cooling to room temperature, adding 30 parts of epoxy resin and 1/2 ultraviolet absorbent, stirring for 1 hour, adding 6 parts of 593 parts of epoxy resin curing agent, stirring for 10 minutes to obtain a mixture F, coating the mixture E, coating the mixture F on the mixture E, and drying to obtain the clean coating.
The third aspect of this embodiment provides a solar photovoltaic module, from the bottom up includes foretell easy clean solar photovoltaic backplate, packaging material, battery piece, packaging material and encapsulation glass in proper order.
Example 4
In order to solve the above technical problems, a first aspect of the present embodiment provides an easy-to-clean solar photovoltaic back panel, which comprises, from top to bottom, an inner layer, an outer layer connected to the inner layer, and a clean coating connected to the outer layer, wherein the raw materials for preparing the outer layer comprise 50 parts of polypropylene a, 5 parts of polyethylene a, 2 parts of titanium dioxide, and 0.5 part of ultraviolet absorber a, the polypropylene a is obtained from yuyao city plastification ltd, and the brand number is: LH5544, said polyethylene a being available from suttley plastification ltd, su under the designation: FD0274, the titanium dioxide is purchased from Jiangsu Tianxing New Material Co., Ltd, and the ultraviolet absorber A is UV-531 and is purchased from Shanyi plastification. The inner layer is prepared from 55 parts of polypropylene B, 10 parts of polyethylene B, 2 parts of zinc oxide A and 0.5 part of ultraviolet absorber B, wherein the polypropylene B is purchased from PEIKONG plastication Co., Yao City, and has the brand number: LH5544, said zinc oxide a being available from new materials, tokay, njaktt, inc, said UV absorber B being UV-531, available from santa plastica, said polyethylene B being available from gottelai plastica, su under the brand numbers: FD 0274. The preparation raw materials of the cleaning coating comprise 62 parts of epoxy resin, 13 parts of 593 epoxy resin curing agent, 4 parts of polyethylene wax, 2 parts of solid inorganic substance A, 13 parts of solid inorganic substance B and 2 parts of ultraviolet absorbent, wherein the solid inorganic substance A is granular zinc oxide, the particle size of the zinc oxide is 1000nm, the zinc oxide is purchased from Raymond alloy materials Co., Ltd, and the product number is as follows: KR-ZnO-3, wherein the solid inorganic substance B is granular zirconia, the particle size of the zirconia is 30nm, the zirconia is purchased from New Material Co., Ltd, of Xuancheng Crystal-Rui, and the product number is VK-R30. The epoxy resin is purchased from Guangzhou TimenBorui trade company, and has the following goods number: 26645568, viscosity of 22 pas, and 593 epoxy hardener from lebond composites, chan, cat: 593-10, wherein the polyethylene wax is purchased from Tianjin Hengshengxin international trade company Limited, and the goods number is: A-C6A, average molecular weight 3000, and the UV absorber UV-531 available from Shanyiplasting.
In a second aspect of this embodiment, a process for preparing an easy-to-clean solar photovoltaic back panel is provided, including the following steps:
(1) mixing polypropylene A, polyethylene A, titanium dioxide and an ultraviolet absorbent A, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and extruding and granulating at 160 ℃ to obtain a first compound;
(2) mixing polypropylene B, polyethylene B, zinc oxide A and an ultraviolet absorbent B, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and performing extrusion granulation at 160 ℃ to obtain a second compound;
(3) respectively conveying the first compound A and the second compound B to an extruder A and an extruder B of a back plate co-extrusion production line, melting and plasticizing the first compound A and the second compound B at 165 ℃, extruding the mixture through a die to obtain a sheet-shaped melt, cooling and shaping the sheet-shaped melt through a cooling roller, and rolling or cutting the sheet-shaped melt to obtain a co-extrusion type solar photovoltaic back plate, so as to form a structure combining an outer layer and an inner layer of the back plate;
(4) mixing zinc oxide with 15 parts of epoxy resin and 1/2 parts of ultraviolet absorbent, stirring for 1h, adding 3 parts of 593 parts of epoxy resin curing agent, stirring for 10min to obtain a mixture E, and coating the mixture E on the outer layer of the solar photovoltaic back panel;
(5) mixing zirconium oxide and polyethylene wax at 150 ℃, stirring for 2 hours, cooling to room temperature, adding 47 parts of epoxy resin and 1/2 ultraviolet absorbent, stirring for 1 hour, adding 10 parts of 593 epoxy resin curing agent, stirring for 10 minutes to obtain a mixture F, coating the mixture E, coating the mixture F on the mixture E, and drying to obtain the clean coating.
The third aspect of this embodiment provides a solar photovoltaic module, from the bottom up includes foretell easy clean solar photovoltaic backplate, packaging material, battery piece, packaging material and encapsulation glass in proper order.
Example 5
In order to solve the above technical problems, a first aspect of the present embodiment provides an easy-to-clean solar photovoltaic back panel, which comprises, from top to bottom, an inner layer, an outer layer connected to the inner layer, and a clean coating connected to the outer layer, wherein the raw materials for preparing the outer layer comprise 50 parts of polypropylene a, 5 parts of polyethylene a, 2 parts of titanium dioxide, and 0.5 part of ultraviolet absorber a, the polypropylene a is obtained from yuyao city plastification ltd, and the brand number is: LH5544, said polyethylene a being available from suttley plastification ltd, su under the designation: FD0274, the titanium dioxide is purchased from Jiangsu Tianxing New Material Co., Ltd, and the ultraviolet absorber A is UV-531 and is purchased from Shanyi plastification. The inner layer is prepared from 55 parts of polypropylene B, 10 parts of polyethylene B, 2 parts of zinc oxide A and 0.5 part of ultraviolet absorber B, wherein the polypropylene B is purchased from PEIKONG plastication Co., Yao City, and has the brand number: LH5544, said polyethylene B being available from suttley plastification ltd, su under the designation: FD0274, wherein the zinc oxide A is purchased from Nanjing Baker New materials Co., Ltd, and the ultraviolet absorber B is UV-531 and is purchased from Shanyiplastification. The preparation raw materials of the clean coating comprise 40 parts of epoxy resin, 8 parts of 593 epoxy resin curing agent, 4 parts of polyethylene wax, 1.3 parts of solid inorganic substance A, 13.7 parts of solid inorganic substance B and 2 parts of ultraviolet absorbent, wherein the solid inorganic substance A is granular zinc oxide, the particle size of the zinc oxide is 1000nm, the zinc oxide is purchased from Lei-Gong alloy materials Co., Ltd, and the product number is as follows: KR-ZnO-3, wherein the solid inorganic substance B is granular zirconia, the particle size of the zirconia is 30nm, the zirconia is purchased from New Material Co., Ltd, of Xuancheng Crystal-Rui, and the product number is VK-R30. The epoxy resin is purchased from Guangzhou TimenBorui trade company, and has the following goods number: 26645568, viscosity of 22 pas, and 593 epoxy hardener from lebond composites, chan, cat: 593-10, wherein the polyethylene wax is purchased from Tianjin Hengshengxin international trade company Limited, and the goods number is: A-C6A, average molecular weight 3000, and the UV absorber UV-531 available from Shanyiplasting.
In a second aspect of this embodiment, a process for preparing an easy-to-clean solar photovoltaic back panel is provided, including the following steps:
(1) mixing polypropylene A, polyethylene A, titanium dioxide and an ultraviolet absorbent A, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and extruding and granulating at 160 ℃ to obtain a first compound;
(2) mixing polypropylene B, polyethylene B, zinc oxide A and an ultraviolet absorbent B, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and performing extrusion granulation at 160 ℃ to obtain a second compound;
(3) respectively conveying the first compound A and the second compound B to an extruder A and an extruder B of a back plate co-extrusion production line, melting and plasticizing the first compound A and the second compound B at 165 ℃, extruding the mixture through a die to obtain a sheet-shaped melt, cooling and shaping the sheet-shaped melt through a cooling roller, and rolling or cutting the sheet-shaped melt to obtain a co-extrusion type solar photovoltaic back plate, so as to form a structure combining an outer layer and an inner layer of the back plate;
(4) mixing zinc oxide with 10 parts of epoxy resin and 1/2 parts of ultraviolet absorbent, stirring for 1h, adding 2 parts of 593 parts of epoxy resin curing agent, stirring for 10min to obtain a mixture E, and coating the mixture E on the outer layer of the solar photovoltaic back panel;
(5) mixing zirconium oxide and polyethylene wax at 150 ℃, stirring for 2 hours, cooling to room temperature, adding 30 parts of epoxy resin and 1/2 ultraviolet absorbent, stirring for 1 hour, adding 6 parts of 593 parts of epoxy resin curing agent, stirring for 10 minutes to obtain a mixture F, coating the mixture E, coating the mixture F on the mixture E, and drying to obtain the clean coating.
The third aspect of this embodiment provides a solar photovoltaic module, from the bottom up includes foretell easy clean solar photovoltaic backplate, packaging material, battery piece, packaging material and encapsulation glass in proper order.
Example 6
In order to solve the above technical problems, a first aspect of the present embodiment provides an easy-to-clean solar photovoltaic back panel, which comprises, from top to bottom, an inner layer, an outer layer connected to the inner layer, and a clean coating connected to the outer layer, wherein the raw materials for preparing the outer layer comprise 50 parts of polypropylene a, 5 parts of polyethylene a, 2 parts of titanium dioxide, and 0.5 part of ultraviolet absorber a, the polypropylene a is obtained from yuyao city plastification ltd, and the brand number is: LH5544, said polyethylene a being available from suttley plastification ltd, su under the designation: FD0274, the titanium dioxide is purchased from Jiangsu Tianxing New Material Co., Ltd, and the ultraviolet absorber A is UV-531 and is purchased from Shanyi plastification. The inner layer is prepared from 55 parts of polypropylene B, 10 parts of polyethylene B, 2 parts of zinc oxide A and 0.5 part of ultraviolet absorber B, wherein the polypropylene B is purchased from PEIKONG plastication Co., Yao City, and has the brand number: LH5544, said zinc oxide a being available from new materials, tokay, njaktt, inc, said UV absorber B being UV-531, available from santa plastica, said polyethylene B being available from gottelai plastica, su under the brand numbers: FD 0274. The preparation raw materials of the clean coating comprise 40 parts of epoxy resin, 8 parts of 593 epoxy resin curing agent, 4 parts of polyethylene wax, 2.5 parts of solid inorganic substance A, 12.5 parts of solid inorganic substance B and 2 parts of ultraviolet absorbent, wherein the solid inorganic substance A is granular zinc oxide, the particle size of the zinc oxide is 1000nm, the zinc oxide is purchased from Lei-Gong alloy materials Co., Ltd, and the product number is as follows: KR-ZnO-3, wherein the solid inorganic substance B is granular zirconia, the particle size of the zirconia is 30nm, the zirconia is purchased from New Material Co., Ltd, of Xuancheng Crystal-Rui, and the product number is VK-R30. The epoxy resin is purchased from Guangzhou TimenBorui trade company, and has the following goods number: 26645568, viscosity of 22 pas, and 593 epoxy hardener from lebond composites, chan, cat: 593-10, wherein the polyethylene wax is purchased from Tianjin Hengshengxin international trade company Limited, and the goods number is: A-C6A, average molecular weight 3000, and the UV absorber UV-531 available from Shanyiplasting.
In a second aspect of this embodiment, a process for preparing an easy-to-clean solar photovoltaic back panel is provided, including the following steps:
(1) mixing polypropylene A, polyethylene A, titanium dioxide and an ultraviolet absorbent A, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and extruding and granulating at 160 ℃ to obtain a first compound;
(2) mixing polypropylene B, polyethylene B, zinc oxide A and an ultraviolet absorbent B, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and performing extrusion granulation at 160 ℃ to obtain a second compound;
(3) respectively conveying the first compound A and the second compound B to an extruder A and an extruder B of a back plate co-extrusion production line, melting and plasticizing the first compound A and the second compound B at 165 ℃, extruding the mixture through a die to obtain a sheet-shaped melt, cooling and shaping the sheet-shaped melt through a cooling roller, and rolling or cutting the sheet-shaped melt to obtain a co-extrusion type solar photovoltaic back plate, so as to form a structure combining an outer layer and an inner layer of the back plate;
(4) mixing zinc oxide with 10 parts of epoxy resin and 1/2 parts of ultraviolet absorbent, stirring for 1h, adding 2 parts of 593 parts of epoxy resin curing agent, stirring for 10min to obtain a mixture E, and coating the mixture E on the outer layer of the solar photovoltaic back panel;
(5) mixing zirconium oxide and polyethylene wax at 150 ℃, stirring for 2 hours, cooling to room temperature, adding 30 parts of epoxy resin and 1/2 ultraviolet absorbent, stirring for 1 hour, adding 6 parts of 593 parts of epoxy resin curing agent, stirring for 10 minutes to obtain a mixture F, coating the mixture E, coating the mixture F on the mixture E, and drying to obtain the clean coating.
The third aspect of this embodiment provides a solar photovoltaic module, from the bottom up includes foretell easy clean solar photovoltaic backplate, packaging material, battery piece, packaging material and encapsulation glass in proper order.
Example 7
In order to solve the above technical problems, a first aspect of the present embodiment provides an easy-to-clean solar photovoltaic back panel, which comprises, from top to bottom, an inner layer, an outer layer connected to the inner layer, and a clean coating connected to the outer layer, wherein the raw materials for preparing the outer layer comprise 50 parts of polypropylene a, 5 parts of polyethylene a, 2 parts of titanium dioxide, and 0.5 part of ultraviolet absorber a, the polypropylene a is obtained from yuyao city plastification ltd, and the brand number is: LH5544, said polyethylene a being available from suttley plastification ltd, su under the designation: FD0274, the titanium dioxide is purchased from Jiangsu Tianxing New Material Co., Ltd, and the ultraviolet absorber A is UV-531 and is purchased from Shanyi plastification. The inner layer is prepared from 55 parts of polypropylene B, 10 parts of polyethylene B, 2 parts of zinc oxide A and 0.5 part of ultraviolet absorbent B, wherein the polyethylene B is purchased from Jintelai plastication Co., Suzhou and has the trade name: FD0274, wherein the polypropylene B is obtained from Yuyao City sunshine City plastication Co., Ltd, and the brand is: LH5544, said zinc oxide A from Nanjing Baker New materials Co., Ltd, and said UV absorber B UV-531 from Shanyiplastication. The preparation raw materials of the clean coating comprise 40 parts of epoxy resin, 8 parts of 593 parts of epoxy resin curing agent, 15 parts of solid inorganic matter and 2 parts of ultraviolet absorbent, wherein the solid inorganic matter is granular zinc oxide, the particle size of the zinc oxide is 1000nm, the zinc oxide is purchased from Lei Gong alloy materials Co., Ltd, in the south Gong City, and the product number is as follows: KR-ZnO-3. The epoxy resin is purchased from Guangzhou TimenBorui trade company, and has the following goods number: 26645568, viscosity of 22 pas, and 593 epoxy hardener from lebond composites, chan, cat: 593-10, the ultraviolet absorber is UV-531, available from Shanyiplasting.
In a second aspect of this embodiment, a process for preparing an easy-to-clean solar photovoltaic back panel is provided, including the following steps:
(1) mixing polypropylene A, polyethylene A, titanium dioxide and an ultraviolet absorbent A, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and extruding and granulating at 160 ℃ to obtain a first compound;
(2) mixing polypropylene B, polyethylene B, zinc oxide A and an ultraviolet absorbent B, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and performing extrusion granulation at 160 ℃ to obtain a second compound;
(3) respectively conveying the first compound A and the second compound B to an extruder A and an extruder B of a back plate co-extrusion production line, melting and plasticizing the first compound A and the second compound B at 165 ℃, extruding the mixture through a die to obtain a sheet-shaped melt, cooling and shaping the sheet-shaped melt through a cooling roller, and rolling or cutting the sheet-shaped melt to obtain a co-extrusion type solar photovoltaic back plate, so as to form a structure combining an outer layer and an inner layer of the back plate;
(4) mixing zinc oxide, epoxy resin and an ultraviolet absorbent, stirring for 1h, adding 2 parts of 593 epoxy resin curing agent, stirring for 10min to obtain a mixture E, coating the mixture E on the outer layer of the solar photovoltaic back panel, and drying to obtain the clean coating.
The third aspect of this embodiment provides a solar photovoltaic module, from the bottom up includes foretell easy clean solar photovoltaic backplate, packaging material, battery piece, packaging material and encapsulation glass in proper order.
Example 8
In order to solve the above technical problems, a first aspect of the present embodiment provides an easy-to-clean solar photovoltaic back panel, which comprises, from top to bottom, an inner layer, an outer layer connected to the inner layer, and a clean coating connected to the outer layer, wherein the raw materials for preparing the outer layer comprise 50 parts of polypropylene a, 5 parts of polyethylene a, 2 parts of titanium dioxide, and 0.5 part of ultraviolet absorber a, the polypropylene a is obtained from yuyao city plastification ltd, and the brand number is: LH5544, said polyethylene a being available from suttley plastification ltd, su under the designation: FD0274, the titanium dioxide is purchased from Jiangsu Tianxing New Material Co., Ltd, and the ultraviolet absorber A is UV-531 and is purchased from Shanyi plastification. The inner layer is prepared from 55 parts of polypropylene B, 10 parts of polyethylene B, 2 parts of zinc oxide A and 0.5 part of ultraviolet absorbent B, wherein the polyethylene B is purchased from Jintelai plastication Co., Suzhou and has the trade name: FD0274, wherein the polypropylene B is obtained from Yuyao City sunshine City plastication Co., Ltd, and the brand is: LH5544, said zinc oxide A from Nanjing Baker New materials Co., Ltd, and said UV absorber B UV-531 from Shanyiplastication. The preparation raw materials of the clean coating comprise 40 parts of epoxy resin, 8 parts of 593 epoxy resin curing agent, 2 parts of solid inorganic substance A, 13 parts of solid inorganic substance B and 2 parts of ultraviolet absorbent, wherein the solid inorganic substance A is granular zinc oxide, the particle size of the zinc oxide is 1000nm, the zinc oxide is purchased from Lei Gong alloy materials Co., Ltd, the product number is as follows: KR-ZnO-3, wherein the solid inorganic substance B is granular zirconia, the particle size of the zirconia is 30nm, the zirconia is purchased from New Material Co., Ltd, of Xuancheng Crystal-Rui, and the product number is VK-R30. The epoxy resin is purchased from Guangzhou TimenBorui trade company, and has the following goods number: 26645568, viscosity of 22 pas, and 593 epoxy hardener from lebond composites, chan, cat: 593-10, the ultraviolet absorber is UV-531, available from Shanyiplasting.
In a second aspect of this embodiment, a process for preparing an easy-to-clean solar photovoltaic back panel is provided, including the following steps:
(1) mixing polypropylene A, polyethylene A, titanium dioxide and an ultraviolet absorbent A, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and extruding and granulating at 160 ℃ to obtain a first compound;
(2) mixing polypropylene B, polyethylene B, zinc oxide A and an ultraviolet absorbent B, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and performing extrusion granulation at 160 ℃ to obtain a second compound;
(3) respectively conveying the first compound A and the second compound B to an extruder A and an extruder B of a back plate co-extrusion production line, melting and plasticizing the first compound A and the second compound B at 165 ℃, extruding the mixture through a die to obtain a sheet-shaped melt, cooling and shaping the sheet-shaped melt through a cooling roller, and rolling or cutting the sheet-shaped melt to obtain a co-extrusion type solar photovoltaic back plate, so as to form a structure combining an outer layer and an inner layer of the back plate;
(4) mixing zinc oxide with 10 parts of epoxy resin and 1/2 parts of ultraviolet absorbent, stirring for 1h, adding 2 parts of 593 parts of epoxy resin curing agent, stirring for 10min to obtain a mixture E, and coating the mixture E on the outer layer of the solar photovoltaic back panel;
(5) stirring zirconium oxide, 30 parts of epoxy resin and 1/2 parts of ultraviolet absorber for 1 hour, then adding 6 parts of 593 parts of epoxy resin curing agent and stirring for 10 minutes to obtain a mixture F, coating the mixture E, then coating the mixture F on the mixture E, and drying to obtain the clean coating.
The third aspect of this embodiment provides a solar photovoltaic module, from the bottom up includes foretell easy clean solar photovoltaic backplate, packaging material, battery piece, packaging material and encapsulation glass in proper order.
Example 9
In order to solve the above technical problems, a first aspect of the present embodiment provides an easy-to-clean solar photovoltaic back panel, which comprises, from top to bottom, an inner layer, an outer layer connected to the inner layer, and a clean coating connected to the outer layer, wherein the raw materials for preparing the outer layer comprise 50 parts of polypropylene a, 5 parts of polyethylene a, 2 parts of titanium dioxide, and 0.5 part of ultraviolet absorber a, the polypropylene a is obtained from yuyao city plastification ltd, and the brand number is: LH5544, said polyethylene a being available from suttley plastification ltd, su under the designation: FD0274, the titanium dioxide is purchased from Jiangsu Tianxing New Material Co., Ltd, and the ultraviolet absorber A is UV-531 and is purchased from Shanyi plastification. The inner layer is prepared from 55 parts of polypropylene B, 10 parts of polyethylene B, 2 parts of zinc oxide A and 0.5 part of ultraviolet absorbent B, wherein the polyethylene B is purchased from Jintelai plastication Co., Suzhou and has the trade name: FD0274, wherein the polypropylene B is obtained from Yuyao City sunshine City plastication Co., Ltd, and the brand is: LH5544, said zinc oxide A from Nanjing Baker New materials Co., Ltd, and said UV absorber B UV-531 from Shanyiplastication. The preparation raw materials of the clean coating comprise 40 parts of epoxy resin, 8 parts of 593 epoxy resin curing agent, 4 parts of polyethylene wax, 2 parts of solid inorganic substance A, 13 parts of solid inorganic substance B and 2 parts of ultraviolet absorbent, wherein the solid inorganic substance A is granular zinc oxide, the particle size of the zinc oxide is 30nm, the zinc oxide is purchased from Nanjing Baoke new material Co., Ltd, and the product number is as follows: PZT, wherein the solid inorganic substance B is granular zirconia, the grain diameter of the zirconia is 30nm, and the zirconia is purchased from New Material Co., Ltd of Xuancheng Crystal-Rui, and the product number is VK-R30. The epoxy resin is purchased from Guangzhou TimenBorui trade company, and has the following goods number: 26645568, viscosity of 22 pas, and 593 epoxy hardener from lebond composites, chan, cat: 593-10, wherein the polyethylene wax is purchased from Tianjin Hengshengxin international trade company Limited, and the goods number is: A-C6A, average molecular weight 3000, and the UV absorber UV-531 available from Shanyiplasting.
In a second aspect of this embodiment, a process for preparing an easy-to-clean solar photovoltaic back panel is provided, including the following steps:
(1) mixing polypropylene A, polyethylene A, titanium dioxide and an ultraviolet absorbent A, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and extruding and granulating at 160 ℃ to obtain a first compound;
(2) mixing polypropylene B, polyethylene B, zinc oxide A and an ultraviolet absorbent B, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and performing extrusion granulation at 160 ℃ to obtain a second compound;
(3) respectively conveying the first compound A and the second compound B to an extruder A and an extruder B of a back plate co-extrusion production line, melting and plasticizing the first compound A and the second compound B at 165 ℃, extruding the mixture through a die to obtain a sheet-shaped melt, cooling and shaping the sheet-shaped melt through a cooling roller, and rolling or cutting the sheet-shaped melt to obtain a co-extrusion type solar photovoltaic back plate, so as to form a structure combining an outer layer and an inner layer of the back plate;
(4) mixing zinc oxide with 10 parts of epoxy resin and 1/2 parts of ultraviolet absorbent, stirring for 1h, adding 2 parts of 593 parts of epoxy resin curing agent, stirring for 10min to obtain a mixture E, and coating the mixture E on the outer layer of the solar photovoltaic back panel;
(5) mixing zirconium oxide and polyethylene wax at 150 ℃, stirring for 2 hours, cooling to room temperature, adding 30 parts of epoxy resin and 1/2 ultraviolet absorbent, stirring for 1 hour, adding 6 parts of 593 parts of epoxy resin curing agent, stirring for 10 minutes to obtain a mixture F, coating the mixture E, coating the mixture F on the mixture E, and drying to obtain the clean coating.
The third aspect of this embodiment provides a solar photovoltaic module, from the bottom up includes foretell easy clean solar photovoltaic backplate, packaging material, battery piece, packaging material and encapsulation glass in proper order.
Example 10
In order to solve the above technical problems, a first aspect of the present embodiment provides an easy-to-clean solar photovoltaic back panel, which comprises, from top to bottom, an inner layer, an outer layer connected to the inner layer, and a clean coating connected to the outer layer, wherein the raw materials for preparing the outer layer comprise 50 parts of polypropylene a, 5 parts of polyethylene a, 2 parts of titanium dioxide, and 0.5 part of ultraviolet absorber a, the polypropylene a is obtained from yuyao city plastification ltd, and the brand number is: LH5544, said polyethylene a being available from suttley plastification ltd, su under the designation: FD0274, the titanium dioxide is purchased from Jiangsu Tianxing New Material Co., Ltd, and the ultraviolet absorber A is UV-531 and is purchased from Shanyi plastification. The inner layer is prepared from 55 parts of polypropylene B, 10 parts of polyethylene B, 2 parts of zinc oxide A and 0.5 part of ultraviolet absorber B, wherein the polypropylene B is purchased from PEIKONG plastication Co., Yao City, and has the brand number: LH5544, said zinc oxide a being available from new materials, tokay, njaktt, inc, said UV absorber B being UV-531, available from santa plastica, said polyethylene B being available from gottelai plastica, su under the brand numbers: FD 0274.
In a second aspect of this embodiment, a process for preparing an easy-to-clean solar photovoltaic back panel is provided, including the following steps:
(1) mixing polypropylene A, polyethylene A, titanium dioxide and an ultraviolet absorbent A, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and extruding and granulating at 160 ℃ to obtain a first compound;
(2) mixing polypropylene B, polyethylene B, zinc oxide A and an ultraviolet absorbent B, stirring at 800rpm, conveying the mixed materials to a granulation extruder, and performing extrusion granulation at 160 ℃ to obtain a second compound;
(3) and respectively conveying the first compound A and the second compound B to an extruder A and an extruder B of a back plate co-extrusion production line, melting and plasticizing the first compound A and the second compound B at 165 ℃, extruding the mixture through a die to obtain a sheet melt, cooling and shaping the sheet melt through a cooling roller, and rolling or cutting the sheet melt to obtain the co-extrusion type solar photovoltaic back plate, so as to form a structure combining the outer layer and the inner layer of the back plate.
The third aspect of this embodiment provides a solar photovoltaic module, from the bottom up includes foretell easy clean solar photovoltaic backplate, packaging material, battery piece, packaging material and encapsulation glass in proper order.
Performance testing
And (3) hydrophobic property test:
10 parts of solar photovoltaic back panel is prepared according to the methods of examples 1 to 9, the contact angle of the cleaning coating is tested according to the standard GBT30693-2014, the quality of the hydrophobic property is represented by the size of the contact angle, the record that the contact angle is larger than or equal to 150 degrees is qualified, the record that the contact angle is smaller than 150 degrees is unqualified, 0-1 unqualified hydrophobic property is excellent, 2-3 unqualified hydrophobic properties are good, and more than 4 unqualified hydrophobic properties are poor.
And (3) testing the antifouling performance:
10 parts of each of the same size solar photovoltaic back sheets were prepared according to the methods of examples 1 to 9, and each solar photovoltaic panel was held as a tilted sheet forming a small angle of 20 ° with the horizontal plane for standby. 1Kg of soil is added into 10L of water to prepare muddy water, pollutants are simulated, the muddy water is sprayed on the solar photovoltaic back panel by using a spraying device, the adhesion condition of the muddy water on the solar photovoltaic back panel is observed, the antifouling performance basically without sewage adhesion is recorded as qualified, the rest parts are unqualified, 0-1 unqualified antifouling performance is excellent, 2-3 unqualified antifouling performance is good, and more than 4 unqualified antifouling performance is poor.
Testing the water vapor barrier property:
10 parts of solar photovoltaic back panels with the same size are respectively prepared according to the methods of examples 1 to 9, and the WVTR is tested according to the test method of ISO15106-2, the test value is less than or equal to 0.5, the water vapor barrier performance is recorded as qualified, the water vapor barrier performance with the test value of more than 0.5 is recorded as unqualified, 0 to 1 unqualified water vapor barrier performance is excellent, 2 to 3 unqualified water vapor barrier performance is good, and more than 4 unqualified water vapor barrier performances are poor.
Figure BDA0002902093890000191
Figure BDA0002902093890000201
According to the data, the inventor compounds solid inorganic matters with certain mass ratio and particle diameter ratio in the clean coating, so that the two solid inorganic matters form a convex structure with two layers of certain gaps in the clean coating, pollutants can be well prevented from being deposited on the solar photovoltaic back panel, the anti-pollution capacity of the clean coating is improved, the inventor treats the solid inorganic matters with small particle diameters by using polyethylene wax, the hydrophobic performance and the anti-pollution performance of the whole solar photovoltaic back panel are further improved, the clean coating can be firmly adhered to the solar photovoltaic back panel by using epoxy resin, and the water vapor barrier performance of the solar photovoltaic back panel can be improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may modify or change the technical content of the above disclosure into equivalent embodiments with equivalent changes, but all those simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the present invention.

Claims (10)

1. The easy-to-clean solar photovoltaic backboard is characterized by at least comprising an inner layer, an outer layer connected with the inner layer and a cleaning coating connected with the outer layer from top to bottom, wherein the cleaning coating has a mastoid structure, and the raw materials for preparing the cleaning coating at least comprise an adhesive and a solid inorganic substance.
2. The easy-to-clean solar photovoltaic backsheet according to claim 1, wherein the adhesive has a viscosity of 10 to 30 Pa-s.
3. The easy-to-clean solar photovoltaic backsheet according to any one of claims 1-2, wherein the solid inorganic substance has a microsphere structure.
4. The easy-to-clean solar photovoltaic back sheet according to claim 3, wherein the solid inorganic substance is a mixture of a solid inorganic substance A and a solid inorganic substance B, the particle size of the solid inorganic substance A is larger than that of the solid inorganic substance B, and the mass ratio of the solid inorganic substance A to the solid inorganic substance B is 1 (6-8).
5. The easy-to-clean solar photovoltaic back sheet according to claim 4, wherein the ratio of the particle size of the solid inorganic A to the particle size of the solid inorganic B is (30-50): 1.
6. the easy-to-clean solar photovoltaic back sheet according to claim 1, wherein the cleaning coating is prepared from raw materials further comprising polyethylene wax.
7. The easy-to-clean solar photovoltaic back sheet according to claim 1, wherein the raw materials for the inner and outer layers comprise at least polyolefin.
8. The easy-to-clean solar photovoltaic backsheet according to claim 7, wherein the polymerized monomer of the polyolefin comprises at least one of ethylene, propylene, butene, pentene, hexene, octene, 4-methyl-1-pentene, styrene, cyclopropene, cyclobutene, cyclopentene, cyclohexene, cycloheptene, 1, 3-cyclohexadiene, and 1, 4-cyclohexadiene.
9. A process for preparing an easy-to-clean solar photovoltaic back sheet according to any one of claims 1 to 8, comprising at least the following steps:
(1) preparing a solar photovoltaic back plate with an inner layer and an outer layer;
(2) and (3) coating a cleaning coating on one side of the outer layer of the solar photovoltaic back plate, and drying to obtain the solar photovoltaic back plate easy to clean.
10. A solar photovoltaic module, characterized by comprising the easy-to-clean solar photovoltaic back plate, the packaging material, the battery piece, the packaging material and the packaging glass of any one of claims 1 to 9 in sequence from bottom to top.
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