Preparation and characterization of TATB-based energetic composite microspheres by continuous pipe-stream self-assembly technology

Recently, the continuously preparation of molding powder with good flowability has attracted much attention in energetic materials field (EMs), however, the traditional preparation process is inadequate. In this paper, a device that can continuously prepare large-scale energetic composite microspheres was designed and built, and the preparation of TATB-based energetic particles was realized, which has greatly improved the impact sensitivity and mechanical property (Impact energy are 58 ∼ 65 J, increased by 16%∼30%; Compression stress and strain of the PBX increased by 52.04% and 60.81%). SEM reveals that as the composition of the binder’s changes, the particle morphology exhibits several intriguing patterns. Meanwhile, TATB's crystal structure and excellent thermal stability have been preserved through pipe-stream self-assembly technique. This preparation procedure, which has a broad range of potential applications, can also be used to generate energetic particles of different Explosive @ Binder systems and even functional spherical materials in other domains.