| The nanometer technology is one effective method to change some physical and chemical performances of powders and explosives. According to the combination of experiments and theories, the preparation method of nanometer RDX was studied and selected. The spraying evaporation method was made certain.The laboratory has prepared nanometer RDX powders the diameters of which were 120nm, 60nm and 50nm respectively. The mechanical sensitivities, the thermal performances and the IR spectrum of the 60nm RDX were tested and compared with the 120nm RDX powders and the industrial RDX.The results showed that the strike sensitivities of nanometer RDX reduced greatly, and the friction sensitivities and the activity energy of thermal decomposition rose. At the same time, the IR spectrum illuminated that the structures of nanometer RDX were compact and intact much more. |