The Safety Properties of a Potential Kind of Novel Green Primary Explosive: Al/Fe2O3/RDX Nanocomposite

Abstract

Green primary explosives have gained wide attention for environmental protection. A potential novel lead-free primary explosive, Al/Fe2O3/RDX hybrid nanocomposite was prepared by ultrasonic mixing, and its safety properties are discussed in detail. Results showed that their sensitivity and safety properties were a function of the specific surface area and proportions of their ingredients. Their impact sensitivity fell and their static discharge, flame, and hot bridge wire sensitivities rose as the specific surface area of nano-Fe2O3 increased. As the amount of Al/Fe2O3 nanothermite was increased, its impact sensitivity fell and its flame sensitivity rose; their static discharge and hot bridge wire sensitivities, however, followed an inverted “U” type change trend and were determined by both the particle size of the ingredients and the resistance of the nanocomposite. Their firing properties in an electric detonator depended on the proportion of the constituents. Thus, green nanoscale primary explosives are appropriate for a range of initiatory applications and can be created by adjusting their specific surface area and the amount of their constituents.

Hybrid Composites Based on Al/CuO Nanothermites and Tetraamminecopper Perchlorate for High-Performance Energetic Materials

“…Therefore, integrating nitrogen-rich explosives into nanothermites appears to be a promising approach for simultaneously obtaining high reaction heat and high gas generation. Recently, several works have been conducted on the combination of nanothermites with a variety of nitrogen-rich explosives, including RDX, − CL-20, − nitrocellulose, − NaN 3 , , and TACN. , Although many of these works indicated that hybrid energetic composites exhibited better energetic performances than individual nanothermites and explosives, the nanothermite–explosive interaction and the influence of their ratios on performances still need systematic and in-depth investigations.…”

A Facile Preparation and Energetic Characteristics of the Core/Shell CoFe2O4/Al Nanowires Thermite Film

“…In addition, their ignition and energy release properties can be tuned by regulating the sizes and shapes, interface contact and stoichiometric ratios of these two components. Therefore, nanothermites are strongly desired in the application fields of microelectromechanical systems (MEMS), propulsion, thermal batteries, gas generators, ignition, initiation and so on [14][15][16][17][18][19].…”