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Spacecraft Spacecraft will experience temperature fluctuation of plus or minus 200℃ when it enters orbit and periodically orbits the earth. In order to control its internal temperature, spacecraft thermal control materials have developed rapidly, among which thermal control coatings are the most widely used and have remarkable effects.

Spacecraft thermal control coating is a kind of light scattering coating with low absorption of solar heat and high emissivity, which is composed of pigment and binder.

The pigment is a white pigment with high emissivity, high purity and high optical stability; The binder is selected from organic polymers (such as polysiloxane) and inorganic compounds (such as silicate, phosphate and titanate) which are temperature-resistant, stable in space environment and easy to clean.

For example, ZnO/ polydimethylsiloxane and ZnO/K2SiO3 are typical aerospace thermal control coating systems.