Research on Perfusion Explosives from SF‐3 Double‐Base Propellants Using Supercritical CO2

Perfusion explosives were prepared using porous SF-3 propellants, which were synthesized by a supercritical fluid foaming process. Scanning electron microscopy (SEM) was used to characterize the porous SF-3 propellants. Massive holes were generated after the foaming process. The density of perfusion explosives using foamed SF-3 propellants exceeds 1.3 g cm−3, and the detonation velocities exceed 6000 m s−1. Underwater energy tests and high-speed photography were carried out to investigate the detonation performance of perfusion explosives. The results showed that perfusion explosives using unfoamed SF-3 propellants could not be detonated. However, perfusion explosives using their foamed analogs could be detonated herein.