Approaching the Thermostability\nLimit of Nitrogen-Rich\nHeterocyclic Perchlorate-Based Energetic Materials

In recent years, driven by ever-increasing application\nof energetic\nmaterials in deep-seated mineral resource exploitation and aerospace\nengineering, the mining of advanced safe energetic materials with\nsignificant thermal stability has drawn widespread publicity. Here,\na tricyclic bridged energetic compound 2-amino-4,6-bis(3,5-diamino-4-nitropyrazol-1-yl)-1,3,5-triazine\n(<b>NPX-03</b>) was prepared using simple synthetic route. Furthermore,\nan interesting highly thermostable nitrogen-rich perchlorate, <b>NPX-03·2HClO</b><sub><b>4</b></sub>, was prepared by\nthe self-assembly reaction of <b>NPX-03</b> and HClO<sub>4</sub>, displaying a thermal decomposition peak temperature of 375.9 °C.\nMoreover, <b>NPX-03·2HClO</b><sub><b>4</b></sub> exhibits\ngood detonation velocity (<i>D</i> = 8187 m s<sup>–1</sup>) and insensitivity (IS = 50 J, FS > 360 N), thereby being promising\ncandidates for advanced insensitive high-energy materials.