Preparation and Characterization of RDX/PDA Composite Energetic Materials Using Microfluidic Technology

In order to further improve the safety of RDX in preparation and application, the effect of polydopamine (PDA) on the performance of RDX was investigated, and the RDX/PDA composite was prepared by microfluidic technology. Composite morphology, structure, and thermal properties were evaluated using scanning electron microscopy (SEM), X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and thermal analysis, respectively. The results show that the RDX/PDA composites are successfully prepared in one step, the particle size is 1~2 μm, the median particle size D 50 is about 0.98 μm, the span value is 0.54, the crystal structure is unchanged. The thermal decomposition activation of RDX/PDA is increased by about 23 kJ∙mol −1 , the thermal stability is improved, and the thermal decomposition mechanism is not changed.