A study on preparation and properties of high density RDX crystal

The preparation method of high density RDX was introduced. The influences of solution concentration, crystallization temperature, stirring speed and dilution rate on RDX crystal density were analyzed, and the high density RDX crystal was prepared. Its crystal shape, defects, density, melting point, thermal property and thermal sensitivity were tested. The results show that the high density RDX crystal density is up to 1.808 g/cm³, i.e. 0.023 g/cm³ higher than that of the ordinary RDX, and reaches to 99.56% of the theory density and lacks of crystal defects. Comparing with the oridinary RDX, the high density RDX's decomposition peak temperature increases by 3.66°C, and ignition point increases by 1°C. The stability of high density RDX is better than that of the ordinary RDX.