Carbon-based micro-nano photo-thermal coating layer and preparation method thereof

A micro-nano coating technology, which is applied to coatings, devices for coating liquid on the surface, special surfaces, etc., can solve the problems of poor mechanical properties, optical properties and chemical stability of solar thermal materials, and achieve simple structure, Good thermal stability, the effect of improving absorption performance

Active Publication Date: 2022-02-18
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the above-mentioned shortcoming of the prior art, the purpose of the present invention is to provide a kind of preparation method of carbon-based micro-nan...

Method used

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  • Carbon-based micro-nano photo-thermal coating layer and preparation method thereof
  • Carbon-based micro-nano photo-thermal coating layer and preparation method thereof

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preparation example Construction

[0039] A preparation method of the above-mentioned carbon-based micro-nano photothermal coating comprises the following steps:

[0040] Use industrial pure aluminum as the base layer material, put it into the spin coater after ultrasonic cleaning and drying; adjust the time and speed of the spin coater to 20s, 500r / min, 60s, 800r / min in turn; use a syringe to extract For 1.5ml of RTV-1, add 1ml dropwise when loading, and when the spin coater starts to work, add the remaining 0.5ml RTV-1 to the base layer through the small hole of the spin coater cover within the first 20s. Before spin-coating, the substrate should be cleaned with ethanol to remove the oxide layer, pollutants and burrs on the surface of the substrate; next, the spin-coated coating should be placed in the air to dry for 10 minutes, and after ultrasonic cleaning for 10 minutes, it will be ignited by physical and chemical deposition. For candles, deposit uniformly at a distance of 2.9 cm from the wick for 2 minute...

Embodiment 1

[0050] 1. Put the grade 1235 aluminum alloy with surface roughness Ra<1μm, no rust spots and pits on the surface into the spin coater after ultrasonic cleaning and drying;

[0051] 2. Pour anhydrous ethanol with a purity of 99.7% into the beaker, and use the structure of the aluminum alloy to ensure that they do not touch each other. During the ultrasonic cleaning process, keep the internal temperature of the cleaning machine at 28°C, and the height of the water level line is higher than that of the beaker. The height of anhydrous ethanol inside; when wrapping, care should be taken to prevent water from entering the inside of the beaker, and the interior should not allow the substrate and the base to adsorb each other, keep a distance of 1cm, work at a power of 100W, and ultrasonic cleaning time for 30min.

[0052] 3. When spin-coating the bonding layer, use 2 times of spin-coating RTV-1, the motor voltage is 220V, the spin-coating time is 20s, and the spin-coating speed is 500...

Embodiment 2

[0057] 1. Put the grade 1235 aluminum alloy with surface roughness Ra<1μm, no rust spots and pits on the surface into the spin coater after ultrasonic cleaning and drying;

[0058] 2. Pour anhydrous ethanol with a purity of 99.7% into the beaker, and use the structure of the aluminum alloy to ensure that they do not touch each other. During the ultrasonic cleaning process, keep the internal temperature of the cleaning machine at 28°C, and the height of the water level line is higher than that of the beaker. The height of anhydrous ethanol inside; when wrapping, care should be taken to prevent water from entering the inside of the beaker, and the interior should not allow the substrate and the base to adsorb each other, keep a distance of 1cm, work at a power of 100W, and ultrasonic cleaning time for 30min.

[0059] 3. When spin-coating the bonding layer, use 2 times of spin-coating RTV-1, the motor voltage is 220V, the spin-coating time is 20s, and the spin-coating speed is 500...

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Abstract

The invention discloses a carbon-based micro-nano photo-thermal coating layer and a preparation method thereof, and belongs to the field of solar photo-thermal conversion, wherein the carbon-based micro-nano photo-thermal coating layer comprises a film-coated substrate, and the surface of the substrate is sequentially spin-coated with RTV-1 and deposited with candle ash; the carbon-based micro-nano photo-thermal coating layer is characterized in that metal aluminum is used as an infrared reflecting layer of the film-coated substrate, and has the function of reducing the infrared emissivity of the coating layer; the RTV-1 layer is a deposition layer and has the function of enhancing the binding force of a carbon nanoparticle coating layer; and the carbon-based micro-nano layer is a candle ash deposition layer and has the functions of absorbing solar radiation and improving the absorption performance of the surface. The prepared carbon-based micro-nano photo-thermal coating layer has high absorptivity and low emissivity, the photo-thermal conversion efficiency of a flat plate type heat collector can be greatly improved, preparation is simple, and the actual cost is relatively low when the method is applied.

Description

technical field [0001] The invention belongs to the field of solar photothermal conversion, and relates to a carbon-based micro-nano photothermal coating and a preparation method thereof. Background technique [0002] With the development and progress of human society, energy has become an indispensable resource for people. Human development is getting faster and faster, and energy consumption is also increasing. Facing energy problems, all countries are supporting the development of new energy. Development and utilization, and there are corresponding supporting policies in the field of new energy to promote the rapid development of the entire industry. Solar energy is an inexhaustible clean energy, and scientific researchers are actively converting the theory of solar energy utilization into applications. High-efficiency solar-to-thermal conversion coatings need to meet the two conditions of high solar absorption rate and low thermal radiation rate. Closely related to sol...

Claims

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Application Information

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IPC IPC(8): B05D5/00B05D7/14B05D1/38B05D7/24B05D5/06
CPCB05D5/00B05D7/14B05D1/38B05D7/24B05D7/548B05D5/06B05D2202/25
Inventor 赵润强师晶王琬瑢柯生兰
Owner SHAANXI UNIV OF SCI & TECH
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