Simple Preparation of Heat-Resistant Energetic Materials Based on [5,6,5] Tricyclic Fused-Ring Skeletons and Evaluation of Their Energetic Performance

• DOI: 10.1021/acs.cgd.4c00038
• Publication Date: 2024-04-30T00:04:20Z
• Authors: Jinxin Wang; Ruibing Lv; Siwei Song; Liyuan Wei; Shiliang Huang; Qinghua Zhang; Kangcai Wang
• Keywords: Pyridazine; Thermal Stability; Tricyclic; Energetic material; Perchlorate

In recent years, there has been great interest in the development of high-performance heat-resistant energetic materials owing to their widespread applications civilian and national defense technologies. Herein, four materials, i.e., 9H-imidazo[4,5-d][1,2,4]triazolo[4,3-b]pyridazin-6-amine (1), perchlorate (2), 9H-imidazo[4,5-d][1,2,4]triazolo[4,3-b]pyridazine-6,8-diamine (3), (4), were prepared comprehensively studied. Compounds 1–4 having unique [5,6,5] tricyclic fused-ring molecular structures via a simple one-step reaction. All compounds exhibited excellent thermal stabilities with decomposition temperatures exceeding 309 °C. The highest temperature (421 °C) was observed for compound 3. stability these found be strongly related skeleton structures. addition, 2 4 high density values 1.882 1.93 g·cm–3, respectively, which comparable highly material, octogen (HMX, 1.91 g·cm–3). calculated detonation velocities those range 6996–8329 m·s–1. value 8329 m·s–1, it higher than that 1,3,5-triamino-2,4,6-trinitrobenzene (TATB, 8176 m·s–1). Notably, all displayed mechanical sensitivities, impact sensitivities being 20 J. preparation methods comprehensive performance make have potential as materials.