Radiation refrigeration coating material and preparation method thereof

A coating material and radiant cooling technology, applied in coatings, polyurea/polyurethane coatings, sustainable manufacturing/processing, etc., can solve problems such as limited application, complicated process, and large equipment investment, and achieve moisture suppression and adhesion strong effect

Active Publication Date: 2022-05-24
上海济物光电技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the MOCVD preparation technology requires a large investment in equipment and complex processes, especially when it comes to the preparation of the substrate buffer layer. The process requirements are strict, and the process repeatability is not good.
The most important problem is that the size and shape of the base substrate are strictly limited by the equipment, and the base substrate must withstand a temperature of up to more than 500 ° C, which strictly limits its wide application.

Method used

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  • Radiation refrigeration coating material and preparation method thereof
  • Radiation refrigeration coating material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) The base material is made of 6 series aluminum alloy with a thickness of 2mm (purchased from Shenzhen Hongnian Metal Materials Co., Ltd.), with an area of ​​75×150mm, and the surface is polished with 240# water sandpaper, 1000# water sandpaper and 1500# sandpaper in turn. Then use acetone and deionized water to ultrasonically clean the polished aluminum alloy surface, and dry the surface to obtain a treated aluminum alloy substrate.

[0059] (2) 0.5g of carbon nanotubes and 0.5g of graphene were added to 1L of 1-ethyl-2-pyrrolidone, and the carbon nanotubes with a solid concentration of 1mg / mL were prepared by ultrasonically stirring the solution and blending Graphene composite carbon material suspension.

[0060] (3) Place the base material on a heating platform, the heating temperature is 100°C, and the polyurethane is dissolved in dimethylacetamide (DMAC) to form a polyurethane slurry, and the volume ratio of the polyurethane to the dimethylacetamide is 4:1, The...

Embodiment 2

[0067] (1) The substrate is made of carbon fiber board (T300-Toray) with a thickness of 3mm, with an area of ​​50×50mm. The surface is textured and cleaned. The pretreatment is to use 240# water sandpaper, 1000# water sandpaper and 1500# sandpaper. The surface was polished, and then the polished carbon fiber surface was ultrasonically cleaned with acetone and deionized water, and the surface was blown dry to obtain a treated carbon fiber substrate.

[0068] (2) 0.6g carbon nanotubes, 0.3g graphene and 0.1g fullerene C 60 It was added to 1 L of tetrahydrofuran, and the composite suspension of carbon nanotubes / graphene as the main phase with a solid content concentration of 1 mg / mL was prepared by ultrasonic stirring and blending of the solution.

[0069] (3) Place the substrate on a heating platform, the heating temperature is 100°C, and the polyimide is dissolved in the polyimide slurry dissolved in dimethylformamide (DMF). The volume ratio of amide is 4:1, and the viscosity ...

Embodiment 3

[0076] (1) The base material is made of 6 series aluminum alloy with a thickness of 2mm (purchased from Shenzhen Hongnian Metal Materials Co., Ltd.), with an area of ​​75×150mm, and the surface is polished with 240# water sandpaper, 1000# water sandpaper and 1500# sandpaper in turn. Then use acetone and deionized water to ultrasonically clean the polished aluminum alloy surface, and dry the surface to obtain a treated aluminum alloy substrate.

[0077] (2) 0.5g of carbon nanotubes and 0.5g of graphene were added to 1L of 1-ethyl-2-pyrrolidone, and the carbon nanotubes with a solid concentration of 1mg / mL were prepared by ultrasonically stirring the solution and blending Graphene composite carbon material suspension.

[0078] (3) Place the base material on a heating platform, the heating temperature is 100°C, and the polyurethane is dissolved in dimethylacetamide (DMAC) to form a polyurethane slurry, and the volume ratio of the polyurethane to the dimethylacetamide is 4:1, The...

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Abstract

The invention discloses a radiation refrigeration coating material and a preparation method thereof. The preparation method comprises the following steps: (1) spraying a polymer slurry on one side of a substrate to form a first layer; (2) spraying a polymer slurry on one side of the substrate; On the first layer, spray the carbon material suspension to form the second layer. In the present invention, a protective layer may further be formed on the second layer. The coating material obtained by the invention has high emissivity in the infrared spectrum, is suitable for base materials of various materials and is not limited by the shape of the base material, and the preparation process is easy to operate at a relatively low temperature, and is suitable for industrialization.

Description

technical field [0001] The invention relates to a radiation refrigeration coating material and a preparation method thereof. Background technique [0002] The infrared detection device, the core component of infrared remote sensing equipment, must work normally in a low temperature environment, so as to obtain satisfactory performance. At present, the refrigerators used in orbit of space infrared remote sensors mainly include radiative refrigerators and Stirling refrigerators. [0003] Radiant cooler is to use the vacuum and cold and dark environment of cosmic space to continuously radiate heat to the cold and dark space through the radiator by means of radiation heat exchange and shield the external heat flow as much as possible to achieve the purpose of passive cooling. It has the advantages of no vibration, no noise interference, very little power consumption, long life, high reliability, and is very suitable for the needs of space remote sensors. [0004] Arrayed carbo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D1/00C09D179/08
CPCC09D175/04C09D1/00C09D179/08Y02P20/10
Inventor 赵守仁谢荣建马小凤李欣耀谢凤法吴亦农汤心溢
Owner 上海济物光电技术有限公司
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