ISO 16691:2014定义了施加在航天器和有效载荷的金属和/或非金属表面上以提供以下热光学特性的热控制涂层(TCC)的一般要求:α s:太阳能吸收率；E:发射率。 TCC的功能是减少外部热量吸收和/或调节航天器上星载设备之间的辐射热交换。

ISO 16691:2014 defines general requirements for thermal control coatings (TCC) that are applied on metallic and/or non-metallic surfaces of spacecraft and payloads in order to provide the following thermo-optical properties: α_s: solar absorptance; ε: emittance. The function of TCC is to reduce external heat absorption and/or to regulate radiant heat exchange between on-board equipment on spacecraft.