Enhancement of thermal properties of Al/MoO₃ thermite by electrostatic spraying

Abstract

To improve the thermal properties of thermite safely and stably, electrostatic spraying was used to prepare the Al/MoO 3 thermite. The Al/MoO 3 thermites were detected and characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), and thermal decomposition experiments were carried out by differential scanning calorimetry (DSC). The heat release of the Al/MoO 3 thermite prepared by the electrostatic spray (1044 J g −1 ) is significantly higher than that of the thermite prepared by the ultrasonic (692 J g −1 ), which is due to more uniform dispersion between Al and MoO 3 . The initial reaction temperature and activation energy (E a ) of the former keep it steady. Electrostatic spray ensures the safety and stability of the Al/MoO 3 thermite. This study provides a new idea for safely and stably improving the thermal properties of thermite by enhancing surface homogenization, which is of great significance for practical applications.

Hot Bridge-Wire Ignition of Nanocomposite Aluminum Thermite Synthesized Using Sol-Gel-Derived Aerogel with Tailored Properties for Enhanced Reactivity and Reduced Sensitivity

“…Other studies have demonstrated that aluminum-based thermites exhibit elevated heat release characteristics, wherein the heat release of Al/MoO 3 is significantly higher in comparison to other thermite compositions [58,65]. The critical reaction temperature of super thermites undergoes a diminution of 200-400 • C upon the addition of aluminum nanoparticles, implying an enhanced reactivity [58].…”