Molecular adsorption-thermal control bifunctional coating and preparation method thereof

A molecular adsorption and dual-function technology, which is applied in coatings, chemical instruments and methods, and other chemical processes, can solve the problems of small application range, increased self-weight of spacecraft, and low total molecular adsorption of adsorption devices. The effect of being simple and easy to implement and easy to promote on a large scale

Inactive Publication Date: 2019-11-26
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN201810711768.8 discloses the first spacecraft on-orbit molecular pollution adsorption device. When in use, the adsorption device can only be additionally fixed on the surface of the spacecraft, which will seriously increase the self-weight of the spacecraft, and cannot be installed on complex components or corner position surface
In addition, the spacecraft’s on-orbit molecular pollution adsorption device uses a hydrothermal synthesis method to prepare a 13X zeolite molecular sieve adsorbent layer, which is costly and complicated to operate. The thickness of the 13X adsorption coating is thin, and the adsorption device’s total molecular adsorption is low.
The second spacecraft on-orbit molecular pollution adsorption device disclosed in CN201810711768.8 can only be used by spraying on thermal control paint or OSR substrates, and the scope of use is small
At the same time, the zeolite adsorption layer / membrane in the two zeolite-based spacecraft on-orbit molecular pollution adsorption devices disclosed in CN201810711768.8 only has the molecular adsorption function

Method used

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  • Molecular adsorption-thermal control bifunctional coating and preparation method thereof
  • Molecular adsorption-thermal control bifunctional coating and preparation method thereof
  • Molecular adsorption-thermal control bifunctional coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Accurately weigh 7.5g of inorganic silica sol (concentration is 40%, average particle diameter 30nm), add 12.5g deionized water, magnetically stir for 5 minutes, slowly add 17.5g NaY powder, continue to stir for 4 hours to make it fully mixed, Prepare NaY zeolite slurry. Use a spray gun to spray multiple times on the frosted aluminum substrate. The thickness of a single spraying is 30-50 μm, the interval between two adjacent sprayings is 3 hours, and the spraying atmosphere is air. After the coating was naturally dried in the shade, it was dried at 80°C for 12 hours to obtain NaY zeolite-based molecular adsorption-thermal control dual-functional coating materials (NaY Coatings-40%-14.6%) with different thicknesses.

Embodiment 2

[0057] Accurately weigh 10g of inorganic silica sol (concentration 40%, average particle size 30nm), add 10g deionized water, stir magnetically for 5 minutes, slowly add 15g NaY powder, continue stirring for 4 hours to fully mix, and prepare NaY zeolite slurry. A spray gun was used to spray coating on the frosted aluminum substrate multiple times, and the specific spraying conditions were the same as in Example 1. After the coating was naturally dried in the shade, it was dried at 50°C for 12 hours to obtain NaY zeolite-based molecular adsorption-thermal control dual-functional coating materials (NaYCoatings-40%-21.1%) with different thicknesses.

Embodiment 3

[0059] Accurately weigh 12.5g of inorganic silica sol (concentration is 40%, average particle size 30nm), add 7g deionized water, magnetically stir for 5 minutes, slowly add 12.5g NaY powder, continue to stir for 4 hours to make it fully mixed, and prepare NaY zeolite slurry. A spray gun was used to spray coating on the frosted aluminum substrate multiple times, and the specific spraying conditions were the same as in Example 1. After the coating was naturally dried in the shade, it was dried at 50°C for 12 hours to obtain NaY zeolite-based molecular adsorption-thermal control dual-functional coating materials (NaYCoatings-40%-28.6%) with different thicknesses.

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Abstract

The invention discloses a molecular adsorption-thermal control bifunctional coating and a preparation method thereof. The raw materials of the molecular adsorption-thermal control bifunctional coatingcomprise a Y-type zeolite and an inorganic silica sol, wherein the mass percentage content of the Y-type zeolite is 60-90%, and the inorganic silica sol is distributed around zeolite crystals in theform of a three-dimensional porous reticular SiO2 chain. The molecular adsorption-thermal control bifunctional coating has a simple structure, saves the cost, does not need to additionally construct athermal control coating, avoids the use of a thermal control material with a multilayer film structure, integrates the molecular adsorption performance with the thermal control performance, has a saturated adsorption capacity of 130 mg/g, and can be used as a functional coating with a high emission value and a high adsorbability.

Description

technical field [0001] The invention belongs to the research field of preparation of novel thermal control coatings, in particular to a molecular adsorption-thermal control dual-functional coating and a preparation method. Background technique [0002] In the space environment, on-orbit molecular pollutants are deposited on the surface of spacecraft optics and thermal control materials, which can lead to serious attenuation of their performance, and molecular pollutants deposited on the surface of solar cell arrays can even lead to a decrease in the output power of solar cell arrays. And then affect the life of the spacecraft. In recent years, while strengthening the control of ground pollution, research on the control of spacecraft on-orbit pollutants has also been carried out. Among them, molecular adsorption coating is a new technology for spacecraft to remove pollutants in orbit. This technology uses molecular adsorption coating materials to absorb and treat molecular p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/61B01J20/16B01J20/28B01J20/30
CPCB01J20/103B01J20/165B01J20/28033C09D1/00C09D7/61
Inventor 于云冯爱虎曹韫真于洋米乐宋力昕
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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