CN117624974B - Application of coating material in photovoltaic field - Google Patents
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- CN117624974B CN117624974B CN202311632135.5A CN202311632135A CN117624974B CN 117624974 B CN117624974 B CN 117624974B CN 202311632135 A CN202311632135 A CN 202311632135A CN 117624974 B CN117624974 B CN 117624974B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/16—Homopolymers or copolymers of vinylidene fluoride
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
- C08K2003/2213—Oxides; Hydroxides of metals of rare earth metal of cerium
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/28—Nitrogen-containing compounds
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- C08L2203/00—Applications
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- C08L2203/204—Applications use in electrical or conductive gadgets use in solar cells
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Abstract
本发明公开了一种涂层材料在光伏领域的应用。本发明制备的氮化铝/二氧化铈/PVDF‑HFP复合涂层具有优异的散热性能，而且，两种导热填料(氮化铝/二氧化铈)混合使用时效果尚佳。在优选的实施方式中，复合涂层的散热性能甚至能与以石墨烯为填料的散热涂层相媲美，具有明显的成本优势，可在产业上得到推广应用。The present invention discloses an application of a coating material in the photovoltaic field. The aluminum nitride/cerium dioxide/PVDF-HFP composite coating prepared by the present invention has excellent heat dissipation performance, and the effect is good when the two thermal conductive fillers (aluminum nitride/cerium dioxide) are mixed. In a preferred embodiment, the heat dissipation performance of the composite coating is even comparable to that of a heat dissipation coating with graphene as filler, has obvious cost advantages, and can be promoted and applied in the industry.
Description
Technical Field
The invention relates to the field of coatings, in particular to application of a coating material in the field of photovoltaics.
Background
Photovoltaic power generation is one of important ways to achieve the aim of carbon neutralization, and solar power generation of the photoelectric effect is to absorb sunlight with the wavelength of 0.4-1.1 μm by using a solar cell and convert light energy into electric energy to be output.
However, if most of the absorbed heat cannot be timely discharged in the photovoltaic power generation process, the temperature of the photovoltaic module can be increased, and further the power generation efficiency, the service life and the like of the photovoltaic module are threatened. Aiming at the problem, a graphene/PVDF-HFP composite heat dissipation coating is designed in the prior art (preparation and performance research of a reinforced metal back plate type photovoltaic module heat dissipation coating, zheng Yuqin). However, graphene is expensive and is difficult to be widely used in industry. In view of this, it is desirable to have a low cost heat dissipation coating for use in the photovoltaic field.
Disclosure of Invention
The invention aims to provide an application of a coating material in the photovoltaic field, and the coating has excellent heat dissipation performance and low cost.
The technical scheme of the invention is as follows:
the application of the coating material in the photovoltaic field, the preparation method of the coating material comprises the following steps:
The substrate pretreatment, namely, selecting stainless steel with the size of 100mm multiplied by 100mm as a substrate, sequentially polishing with sand paper with the size of 100, 400, 1200 and 2000 meshes, pickling with 15-18wt% hydrochloric acid solution, degreasing with 20-25wt% sodium bicarbonate solution, removing surface residual liquid with absolute ethyl alcohol, and drying for later use;
Preparing a coating solution, namely adding 100-120g of PVDF-HFP powder into 500-600g of DMF solution, magnetically stirring for 45-60min at 55-60 ℃ to obtain a transparent precursor, adding 45-50g of acrylic resin into the transparent precursor, magnetically stirring for 45-60min at room temperature, continuously adding 0.5-3.2g of aluminum nitride powder with the average particle size of 200-400nm and 0.5-3.2g of cerium oxide powder, magnetically stirring for 150-180min at room temperature, and standing for 4-6h to obtain a viscous coating solution;
And (3) preparing a composite coating, namely coating the coating solution on the surface of the pretreated substrate, drying in a vacuum drying oven to finally obtain the photovoltaic module heat dissipation coating, and controlling the coating amount or the coating times of the coating solution to ensure that the thickness of the composite coating is 50-100 mu m.
Preferably, the concentration of the hydrochloric acid solution is 15wt%.
Preferably, the sodium bicarbonate solution has a concentration of 25wt%.
Preferably, the PVDF-HFP powder has a mass of 100g.
Preferably, the mass of the DMF solution is 500g.
Preferably, the thickness of the composite coating is 50 μm.
Preferably, the mass of the aluminum nitride powder is 0.9g.
Preferably, the mass of the cerium oxide powder is 1.2g.
The aluminum nitride/cerium oxide/PVDF-HFP (polyvinylidene fluoride-hexafluoropropylene copolymer) composite coating prepared by the invention has excellent heat dissipation performance, and the effect is good when two heat conducting fillers (aluminum nitride/cerium oxide) are mixed for use. In the preferred embodiment, the heat dissipation performance of the composite coating is even comparable to that of a heat dissipation coating with graphene as a filler, has obvious cost advantage, and can be popularized and applied in industry.
Detailed Description
The technical effects of the present invention are verified by the following specific examples, but the embodiments of the present invention are not limited thereto.
Example 1
The substrate pretreatment, namely, selecting stainless steel with the size of 100mm multiplied by 100mm as a substrate, sequentially polishing with sand paper with the size of 100, 400, 1200 and 2000 meshes, pickling with 15wt% hydrochloric acid solution, degreasing with 20wt% sodium bicarbonate solution, removing surface residual liquid with absolute ethyl alcohol, and drying for later use;
Preparing a coating solution, namely adding 100g of PVDF-HFP powder into 500g of DMF solution, magnetically stirring for 45min at 55 ℃ to obtain a transparent precursor, adding 45g of acrylic resin into the transparent precursor, magnetically stirring for 45min at room temperature, continuously adding 0.5g of aluminum nitride powder with the average particle size of 200nm and 0.5g of cerium oxide powder, magnetically stirring for 150min at room temperature, and standing for 4h to obtain a viscous coating solution;
And (3) preparing a composite coating, namely coating the coating solution on the surface of the pretreated substrate, drying in a vacuum drying oven to finally obtain the photovoltaic module heat dissipation coating, and controlling the coating amount or the coating times of the coating solution to ensure that the thickness of the composite coating is 50 mu m.
Example 2
The substrate pretreatment, namely, selecting stainless steel with the size of 100mm multiplied by 100mm as a substrate, sequentially polishing with sand paper with the size of 100, 400, 1200 and 2000 meshes, pickling with 15wt% hydrochloric acid solution, degreasing with 20wt% sodium bicarbonate solution, removing surface residual liquid with absolute ethyl alcohol, and drying for later use;
Preparing a coating solution, namely adding 100g of PVDF-HFP powder into 500g of DMF solution, magnetically stirring for 45min at 55 ℃ to obtain a transparent precursor, adding 45g of acrylic resin into the transparent precursor, magnetically stirring for 45min at room temperature, continuously adding 1.2g of aluminum nitride powder with the average particle size of 200nm and 0.9g of cerium oxide powder, magnetically stirring for 150min at room temperature, and standing for 4h to obtain a viscous coating solution;
And (3) preparing a composite coating, namely coating the coating solution on the surface of the pretreated substrate, drying in a vacuum drying oven to finally obtain the photovoltaic module heat dissipation coating, and controlling the coating amount or the coating times of the coating solution to ensure that the thickness of the composite coating is 50 mu m.
Example 3
The substrate pretreatment, namely, selecting stainless steel with the size of 100mm multiplied by 100mm as a substrate, sequentially polishing with sand paper with the size of 100, 400, 1200 and 2000 meshes, pickling with 15wt% hydrochloric acid solution, degreasing with 20wt% sodium bicarbonate solution, removing surface residual liquid with absolute ethyl alcohol, and drying for later use;
preparing a coating solution, namely adding 100g of PVDF-HFP powder into 500g of DMF solution, magnetically stirring for 45min at 55 ℃ to obtain a transparent precursor, adding 45g of acrylic resin into the transparent precursor, magnetically stirring for 45min at room temperature, continuously adding 0.9g of aluminum nitride powder with the average particle size of 200nm and 1.2g of cerium oxide powder, magnetically stirring for 150min at room temperature, and standing for 4h to obtain a viscous coating solution;
And (3) preparing a composite coating, namely coating the coating solution on the surface of the pretreated substrate, drying in a vacuum drying oven to finally obtain the photovoltaic module heat dissipation coating, and controlling the coating amount or the coating times of the coating solution to ensure that the thickness of the composite coating is 50 mu m.
Example 4
The substrate pretreatment, namely, selecting stainless steel with the size of 100mm multiplied by 100mm as a substrate, sequentially polishing with sand paper with the size of 100, 400, 1200 and 2000 meshes, pickling with 15wt% hydrochloric acid solution, degreasing with 20wt% sodium bicarbonate solution, removing surface residual liquid with absolute ethyl alcohol, and drying for later use;
Preparing a coating solution, namely adding 100g of PVDF-HFP powder into 500g of DMF solution, magnetically stirring for 45min at 55 ℃ to obtain a transparent precursor, adding 45g of acrylic resin into the transparent precursor, magnetically stirring for 45min at room temperature, continuously adding 1.8g of aluminum nitride powder and 1.8g of cerium oxide powder with the average particle size of 200nm, magnetically stirring for 150min at room temperature, and standing for 4h to obtain a viscous coating solution;
And (3) preparing a composite coating, namely coating the coating solution on the surface of the pretreated substrate, drying in a vacuum drying oven to finally obtain the photovoltaic module heat dissipation coating, and controlling the coating amount or the coating times of the coating solution to ensure that the thickness of the composite coating is 50 mu m.
Example 5
The substrate pretreatment, namely, selecting stainless steel with the size of 100mm multiplied by 100mm as a substrate, sequentially polishing with sand paper with the size of 100, 400, 1200 and 2000 meshes, pickling with 15wt% hydrochloric acid solution, degreasing with 20wt% sodium bicarbonate solution, removing surface residual liquid with absolute ethyl alcohol, and drying for later use;
Preparing a coating solution, namely adding 100g of PVDF-HFP powder into 500g of DMF solution, magnetically stirring for 45min at 55 ℃ to obtain a transparent precursor, adding 45g of acrylic resin into the transparent precursor, magnetically stirring for 45min at room temperature, continuously adding 2.5g of aluminum nitride powder and 2.5g of cerium oxide powder with the average particle size of 200nm, magnetically stirring for 150min at room temperature, and standing for 4h to obtain a viscous coating solution;
And (3) preparing a composite coating, namely coating the coating solution on the surface of the pretreated substrate, drying in a vacuum drying oven to finally obtain the photovoltaic module heat dissipation coating, and controlling the coating amount or the coating times of the coating solution to ensure that the thickness of the composite coating is 50 mu m.
Comparative example 1
The substrate pretreatment, namely, selecting stainless steel with the size of 100mm multiplied by 100mm as a substrate, sequentially polishing with sand paper with the size of 100, 400, 1200 and 2000 meshes, pickling with 15wt% hydrochloric acid solution, degreasing with 20wt% sodium bicarbonate solution, removing surface residual liquid with absolute ethyl alcohol, and drying for later use;
preparing a coating solution, namely adding 100g of PVDF-HFP powder into 500g of DMF solution, magnetically stirring for 45min at 55 ℃ to obtain a transparent precursor, adding 45g of acrylic resin into the transparent precursor, magnetically stirring for 45min at room temperature, continuously adding 2.1g of aluminum nitride powder with the average particle size of 200nm, magnetically stirring for 150min at room temperature, and standing for 4h to obtain a viscous coating solution;
And (3) preparing a composite coating, namely coating the coating solution on the surface of the pretreated substrate, drying in a vacuum drying oven to finally obtain the photovoltaic module heat dissipation coating, and controlling the coating amount or the coating times of the coating solution to ensure that the thickness of the composite coating is 50 mu m.
Comparative example 2
The substrate pretreatment, namely, selecting stainless steel with the size of 100mm multiplied by 100mm as a substrate, sequentially polishing with sand paper with the size of 100, 400, 1200 and 2000 meshes, pickling with 15wt% hydrochloric acid solution, degreasing with 20wt% sodium bicarbonate solution, removing surface residual liquid with absolute ethyl alcohol, and drying for later use;
Preparing a coating solution, namely adding 100g of PVDF-HFP powder into 500g of DMF solution, magnetically stirring for 45min at 55 ℃ to obtain a transparent precursor, adding 45g of acrylic resin into the transparent precursor, magnetically stirring for 45min at room temperature, continuously adding 2.1g of cerium oxide powder with the average particle size of 200nm, magnetically stirring for 150min at room temperature, and standing for 4h to obtain a viscous coating solution;
And (3) preparing a composite coating, namely coating the coating solution on the surface of the pretreated substrate, drying in a vacuum drying oven to finally obtain the photovoltaic module heat dissipation coating, and controlling the coating amount or the coating times of the coating solution to ensure that the thickness of the composite coating is 50 mu m.
Next, we evaluate the heat dissipation properties of the samples of examples 1-5 and comparative examples 1-2, and characterize the heat dissipation properties of the coating by thermal diffusivity, by referring to the prior art mentioned in the background. The test results are shown in table 1:
Table 1 thermal diffusivity of each sample
| Numbering device | Thermal diffusivity/μm 2·s-1 |
| Example 1 | 2.31 |
| Example 2 | 2.47 |
| Example 3 | 3.02 |
| Example 4 | 2.71 |
| Example 5 | 2.55 |
| Comparative example 1 | 1.97 |
| Comparative example 2 | 1.64 |
As can be seen from table 1, the aluminum nitride/ceria/PVDF-HFP composite coating prepared according to the present invention has excellent heat dissipation performance, and the effect is excellent when two heat conductive fillers (aluminum nitride/ceria) are mixed for use. In the preferred embodiment, the heat dissipation performance of the composite coating is even comparable with that of a heat dissipation coating taking graphene as a filler, has obvious cost advantage, and can be applied and popularized in industry.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (8)
1. The application of the coating material in the photovoltaic field is characterized in that the preparation method of the coating material comprises the following steps:
The substrate pretreatment, namely, selecting stainless steel with the size of 100mm multiplied by 100mm as a substrate, sequentially polishing with sand paper with the size of 100, 400, 1200 and 2000 meshes, pickling with 15-18wt% hydrochloric acid solution, degreasing with 20-25wt% sodium bicarbonate solution, removing surface residual liquid with absolute ethyl alcohol, and drying for later use;
Preparing a coating solution, namely adding 100-120g of PVDF-HFP powder into 500-600g of DMF solution, magnetically stirring for 45-60min at 55-60 ℃ to obtain a transparent precursor, adding 45-50g of acrylic resin into the transparent precursor, magnetically stirring for 45-60min at room temperature, continuously adding 0.5-3.2g of aluminum nitride powder with the average particle size of 200-400nm and 0.5-3.2g of cerium oxide powder, magnetically stirring for 150-180min at room temperature, and standing for 4-6h to obtain a viscous coating solution;
And (3) preparing a composite coating, namely coating the coating solution on the surface of the pretreated substrate, drying in a vacuum drying oven to finally obtain the photovoltaic module heat dissipation coating, and controlling the coating amount or the coating times of the coating solution to ensure that the thickness of the composite coating is 50-100 mu m.
2. Use of the coating material according to claim 1 in the photovoltaic field, characterized in that the concentration of the hydrochloric acid solution is 15wt%.
3. Use of the coating material according to claim 1 in the photovoltaic field, characterized in that the concentration of sodium bicarbonate solution is 25wt%.
4. Use of the coating material according to claim 1 in the photovoltaic field, characterized in that the PVDF-HFP powder has a mass of 100g.
5. Use of the coating material according to claim 1 in the photovoltaic field, characterized in that the mass of the DMF solution is 500g.
6. Use of the coating material according to claim 1 in the photovoltaic field, wherein the thickness of the composite coating is 50 μm.
7. Use of the coating material according to claim 1 in the photovoltaic field, characterized in that the mass of the aluminium nitride powder is 0.9g.
8. Use of the coating material according to claim 1 in the photovoltaic field, characterized in that the mass of cerium oxide powder is 1.2g.
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| CN108997922A (en) * | 2018-07-02 | 2018-12-14 | 安徽玉堂雨具有限公司 | A kind of method that rain gear prepares super-hydrophobic wear-resistant polyurethane coating with addition nano ATO-silica-ceria |
| CN111205579A (en) * | 2020-02-22 | 2020-05-29 | 杭州电子科技大学 | High-efficiency high-temperature-resistant aluminum nitride/polymer composite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108997922A (en) * | 2018-07-02 | 2018-12-14 | 安徽玉堂雨具有限公司 | A kind of method that rain gear prepares super-hydrophobic wear-resistant polyurethane coating with addition nano ATO-silica-ceria |
| CN111205579A (en) * | 2020-02-22 | 2020-05-29 | 杭州电子科技大学 | High-efficiency high-temperature-resistant aluminum nitride/polymer composite material and preparation method thereof |
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