▎ 摘　　要

NOVELTY - A three-dimensional (3D) aerogel-based phase change composite material comprises a lower component of composite aerogel (MG) formed by MXene/reduced graphene oxide which is infiltrated with the phase change material n-octadecane to form a phase change structure layer, and an upper component of the composite aerogel formed by MXene/reduced graphene oxide which is coated with thermochromic ink to form a color-changing layer. There is a separation distance between the phase-change layer and the color-changing layer. MXene/reduced graphene oxide composite aerogels have tunable microchannel structures. USE - Three-dimensional aerogel-based phase change composite material used for infrared stealth and visible light double camouflage (claimed) used in thermal imaging target detection and positioning other than visible light reconnaissance. ADVANTAGE - The three-dimensional aerogel based phase change composite material has infrared stealth and visible light dual camouflage function, and excellent photo-thermal and joule heating characteristics. The thermochromic ink is sprayed to the surface of the heat insulation layer to prepare the composite material with visible light camouflage layer, thus realizing the pseudo-color fast switching between desert yellow and jungle green. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) manufacture of the 3D aerogel-based phase change composite material; and (2) use of the composite material for infrared stealth and visible light double camouflage.