Thermal Control
SolarBlack
INORGANIC HIGH TEMPERATURE BLACK COATING
Solar absorption BOL 0.96 – EOL 0.96
Emissivity BOL 0.8 – EOL 0.8
Stable <-150ºC to >550ºC
SolarBlack has been extensively tested by ESA and Astrium and is the baseline heatshield coating for ESA’s Solar Orbiter. It will be the first line of defense for the closest man-made object to the Sun. Due to its high emissivity and extremely high solar absorbance, the coating can efficiently absorb incoming solar radiation and re-emit it to the surrounding cold medium of space. It has a unique combination of durability, thermal stability, and electrical conductivity, and contains no volatile organic compounds.
SolarWhite
INORGANIC HIGH TEMPERATURE WHITE COATING
Solar absorption BOL 0.17 – EOL 0.20
Emissivity 0.89
Stable <-150 to >550ºC
SolarWhite is ENBIO’s white thermal control coating with minimal absorption. It is currently undergoing qualification for the Solar Orbiter mission. Like SolarBlack, it is inorganic and has the durability and thermal stability that this entails. The coating is applied at room temperature and is suitable for titanium, aluminium, and CFRP substrates. SolarWhite’s absorption and emission values are highly stable, the coating is resistant to contamination, and no out-gassing occurs at high temperature.
