Preparation method of high-absorption high-emissivity ultra-black molecular adsorption coating

Abstract

The invention discloses a preparation method of a high-absorption high-emissivity ultra-black molecular adsorption coating, belonging to the technical field of ultra-black materials. The invention aims to overcome the problems that an existing molecular pollution adsorber with a zeolite molecular sieve as a functional material is large in weight and size, inflexible in installation position and not wide enough in absorption area. According to the preparation method, carbon black and zeolite powder with large specific surface areas are taken as cores, functional powder prepared by an atomic layer deposition technology and taking an ultrathin oxide film layer as a shell is taken as filler, the filler is mixed with a low-volatility resin material, and then coating and curing are conducted so as to obtain the molecular adsorption coating. The average solar absorptivity of the coating is 95%, the hemispherical emissivity of the coating is 91%, a surface layer has the performance of eliminating stray light, and the adsorption capacity of the coating to organic gases (VOCs) such as phthalate, organosiloxane and n-butene is larger than or equal to 17.58 mg / g. 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 an ultra-black molecular adsorption coating with high absorption and high emissivity, and belongs to the technical field of ultra-black materials. Background technique

[0002] With the development of spacecraft and satellite imaging systems in the direction of high performance, high reliability, and long life, stringent requirements are placed on the accuracy and sensitivity of payloads. When a spacecraft operates in a high-vacuum environment, small organic molecule pollutants released by materials such as adhesives and plasticizers used will condense and deposit on the surfaces of sensitive components, especially sensitive optical components, affecting their full function or even lead to failure. Therefore, the prevention and control of molecular contamination in orbit has received great attention, and it is urgent to take corresponding measures and measures to reduce its impact on sensitive component...

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