Spark Desensitization of Nanothermites via the Addition of Highly Electro-Conductive Carbon Particles

In the past decade, formulation of spark-desensitized nanothermites has considerably advanced, making them safe to handle. When ignited, these materials reveal impressive properties such as high temperatures (>1000 °C), intense heat releases (>kJ/cm3), and sometimes gas generation. Unfortunately, energetic systems are systematically characterized by an extreme sensitivity electrostatic discharges, which can cause accidental ignitions during preparation, handling, transport. The present study examines discharge response Al/WO3 doped with highly conductive carbon nanoparticles (Ketjenblack EC600JD). results showed increased threshold from <0.14 mJ almost 40 18.80 vol. % KB EC600JD in mixture. material was also desensitized friction stress a greater than 360 N, contrast value <4.9 N for un-doped composite material. reactive performance system (w/o Ketjenblack additive) verified open medium means optical igniter. release determined calorimetric bomb decrease 50% recorded carbon-doped compared pristine composition.