Pour en savoir plus : Novel core-shell composite material based on polyacrylic acid salt and polyaniline for infrared camouflage applicationsInfrared 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%.
