| 초록 |
High explosives (HEs) containing –NO2, -ONO2, and –NHNO2 groups can emit large energy, high heat, and pressure for a short time. Owing to these properties, it can be used in various fields, including the military, mining, and construction industries. The detonation of these high-energy materials should be initiated by a desired and expected external energy; However unintentional initiation occurs owing to internal voids, called hotspots, generated inside the high explosives during recrystallization processes in synthesis of HEs. To address this issue, in this study, one of the representative HEs, RDX was encapsulated in metal-organic frameworks (MOFs) with high surface areas and high pore volumes. The RDX-encapsulated mesoporous MOFs showed lower impact sensitivity (23%) and friction sensitivity (125%) compared to those of raw RDX, owing to the decrease of hotspots due to the nano-sizing of the HEs and protection from external impact provided by the rigid MOF structure. |
