Preparation of silver-plated Hollow Glass Microspheres and its application in infrared stealth coating fabrics

The infrared stealth fabric was prepared using silver-plated Hollow Glass Microspheres (HGMs) doped with aluminum powder by coating. Silver-plated HGMs was produced by in-situ polymerization of polyaniline (PANI) firstly and followed by electroless silver plating. The surface morphology was characterized by scanning electron microscopy (SEM). FT-IR and XRD analysis were further carried out to verify the preparation of silver-plated HGMs and coated fabrics during the reaction. Thermal infrared imaging device was used to test infrared radiation intensity of coating cotton fabric. Anti-electromagnetic radiation tester was used to evaluate shielding effectiveness. The surface temperature difference of the heated coating fabric was measured. Thermogravimetric (TG) analysis was carried out to study thermal stability. Only a little temperature rises after heating the coating fabric with low infrared radiation, and the shielding effectiveness (SE) can reach 26.8 dB. The results demonstrated this material was endowed with outstanding infrared stealth, electromagnetic interference (EMI) shielding and thermal radiation protection properties.