Infrared stealth materials that are lightweight and offering effective thermal camouflage are increasingly needed for advanced defense and sensing applications. Core-shell polymeric composites exhibit high performance thanks to strong interfacial interaction, multiple absorption mechanisms, and low density. This research presents a successful attempt at the preparation of lightweight infrared (IR) stealth polymeric core-shell composite material. The mechanism for thermal camouflage is based on absorbing the incoming thermal signals and then emitting them outside the atmospheric windows (wavelengths of 5-8 μm and 8-14 μm) via a broadband absorption/emission mechanism. Novel core-shell composite materials were prepared, using the in situ polymerization method to form a a shell of polyaniline (PANI) with two types of core materials, poly acrylic acid salt (PAAS) and polyacrylonitrile (PAN) with PANI weight ratios of 10%, 15%, and 20%.
Pour en savoir plus : Novel core-shell composite material based on polyacrylic acid salt and polyaniline for infrared camouflage applications
