Thermal control film with controllable emissivity

• Main Authors: FENG YUDONG, ZHOU CHAO, WANG HU, ZHANG WEIWEN, YANG MIAO, WANG YI, HE YANCHUN, LI XUELEI, ZHANG KAIFENG, WANG ZHIMIN
• Format: Patent
• Language: Chinese; English
• Published: 06.06.2017
• Subjects: LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; TRANSPORTING

The invention discloses a thermal control film with controllable emissivity. The thermal control film comprises a substrate, a high-reflectivity layer with reflectivity of greater than or equal to 0.8, a high-emissivity layer with infrared emissivity of 0.3-0.7 and a protection layer, wherein the high-reflectivity layer, the high-emissivity layer and the protection layer are sequentially arranged on the substrate surface from inside to outside. The thermal control material disclosed by the invention can realize control of different absorption/emission ratios as well as lightweight design, and is applicable to a new-generation controllable-emissivity thermal control coating for spacecraft with the characteristics of light weight, small miniaturization and whole-spacecraft isothermality; and moreover, the thermal control film has the advantages of simple structure, low cost, convenience in preparation and high stability of space environment, meets different needs for emissivity at different parts of the spacecr