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Preparation method of white molecular adsorption coating with thermal control function

A molecular adsorption, white technology, used in coatings, reflective/signal coatings, alkali metal silicate coatings, etc., can solve the problems of insufficient absorption area, inflexible installation position, large size, etc., and achieve excellent space environment adaptation properties, improve structural stability and dispersibility, and improve the effect of bonding strength

Active Publication Date: 2021-03-12
HARBIN INST OF TECH
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Problems solved by technology

[0004] In order to solve the problems of existing molecular pollution adsorbers using zeolite molecular sieves as functional materials, such as large weight, large size, inflexible installation position, and insufficient absorption area, the present invention provides a preparation of a white molecular adsorption coating with thermal control function method

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  • Preparation method of white molecular adsorption coating with thermal control function
  • Preparation method of white molecular adsorption coating with thermal control function
  • Preparation method of white molecular adsorption coating with thermal control function

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specific Embodiment approach 1

[0044] (1) Heat and dry 13X-type zeolite molecular sieve powder with micropores and / or mesoporous channels with a pore size less than 20 nm to discharge excess water vapor in the zeolite and facilitate rapid pumping during the atomic layer deposition process. The specific operation is: heat the zeolite molecular sieve powder in a tube furnace, heat it to 200°C within 0.5h, vacuumize it to -0.1MPa, keep it warm for 2h, and cool it down to room temperature naturally.

[0045] (2) Zeolite molecular sieve powder, zinc oxide and a certain amount of ZrO after the above-mentioned treatment 2 Put the grinding balls together into the ball mill tank, cover the lid, use the two air holes reserved on the tank cover to fill in the argon gas with a purity of 99.99% for 10 minutes to completely discharge the air, and finally fix the ball mill tank to the ball mill Here, set the rotating speed of the ball mill to 600rpm, and the ball milling time to 4h. Wherein, the zinc oxide particle size ...

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Abstract

The invention discloses a preparation method of a white molecular adsorption coating with a thermal control function, and belongs to the technical field of white molecular adsorption coating materials. The molecular pollution adsorber solves the problems that an existing molecular pollution adsorber with a zeolite molecular sieve as a functional material is large in weight and size, inflexible ininstallation position and not large enough in absorption area. According to the technical scheme, zinc oxide and zeolite powder are used as cores, wherein the ultrathin oxide film layer prepared by anatomic layer deposition technology is used as a shell to construct a novel white pigment, the novel white pigment is further mixed with a low-volatility resin material, and the molecular adsorption coating is obtained after coating and curing. The average solar absorptivity of the coating is 17%, the hemispherical emissivity of the coating is 92%, the surface layer of the coating has thermal control performance, and the adsorbing capacity of the coating to organic gases (VOCs) such as phthalate, organosiloxane and n-butene is larger than or equal to 16.6 mg / g. Moreover, the coating has excellent space environment adaptability and can meet the application requirements of spacecrafts and satellite imaging systems.

Description

technical field [0001] The invention relates to a preparation method of a white molecular adsorption coating with thermal control function, and belongs to the technical field of white molecular adsorption coating materials. Background technique [0002] As one of the most important tools for exploring space, a spacecraft's working status will directly affect the smooth progress of the mission. When the spacecraft is operating in a high-vacuum environment, organic small molecule pollutants such as siloxane, esters, and hydrocarbons released by non-metallic materials will condense and deposit on the surfaces of various optical systems and thermal control systems, affecting their functions. full play or even lead to failure. In addition, these organic molecular pollutants will also be deposited in the manned cabin or vacuum chamber, affecting the health of astronauts and the performance of sensitive components. With the development of spacecraft in the direction of high perfo...

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Application Information

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IPC IPC(8): C09D1/02C09D5/33C09D7/62C09D7/63B05D7/24B05D5/00
CPCB05D5/00B05D7/24C09D1/02C09D5/004C09D7/62C09D7/63C09D7/70
Inventor 卢松涛李杨洪杨吴晓宏秦伟
Owner HARBIN INST OF TECH
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