The performance of explosive is not only affected by the molecular structure, but also closely related to the crystal structure. The research development in ciystai structure and properties for RDX was reviewed- RDX is featured as orthorhombic system with a = 13.182(A),b = 11.574(A),c = 10. 709(A),Z =8,a =β=γ= 90. 0°,and space group of Pbca. When the average particle size is in the range of 16.7 μn to 337.9 μm.it shows greater effect of RDX particle size to the impact sensitivity, the laige the RDX particle size, the higher the impact sensitivity. It shows that the crystal structure of RDX has an important influence on its properties. The crystal structure should be fully taken into account in the application process.%单质炸药的性能不仅受炸药分子结构的影响,而且与炸药晶体结构密切相关.综述了RDX晶体结构与性能方面的研究进展.RDX晶胞为斜方晶系,Pbca点群,a=13.182(A),b=11.574(A),c=10.709(A),Z=8,α=β=γ=90.0°.当平均颗粒直径在16.7 ～337.9 μm范围时,RDX颗粒度对撞击感度影响较大,颗粒越大撞击感度越高.证实了RDX的晶体结构对其性能具有重要影响.因此,RDX在应用过程中应充分考虑其晶体结构.
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