Resonant Acoustic Mixing and its applications to energetic materials
Resonant Acoustic Mixing (RAM) is a technology developed by ResoDyn Corporation which provides a low-energy contactless mixing system. This paper examines how the RAM technology can be applied to the processing of energetic materials and provides a comparison with conventional mixing techniques. Through research carried out to date, it has been established that RAM technology offers several advantages over traditional mixing techniques, especially where energetic materials are concerned. The main advantage lies in the relatively gentle mechanism of the RAM technique, where only minor damage occurs to sample particulates, with no blades or impellers being used in the process. The extent of particle damage encountered has been assessed by scanning electron microscopy, and shown that very little shear occurs during mixing at low accelerations. The process is also relatively thermally benign, although some temperature excursions have been encountered. Work has been undertaken to prepare energetic co-crystals and salts using a solvent-drop approach in the RAM, offering advantages in terms of diverse container compatibility and fast processing time.