目的　讨论 RDX粒度对塑性炸药包覆及感度性能的影响 .方法　以不同粒度的主体炸药制备塑性炸药后进行表面包覆、机械感度比较 .结果　由于粘结剂含量多 ,RDX的粒度较小时也容易包覆且机械感度较低 .结论　选择粒度为 ( 4 0～ 6 4 )μm目的主体炸药制备的塑性炸药 ,包覆性能较好 ,机械感度较低 OBJECTIVE To investigate the effect of RDX particle size on the coating and sensitivity performance of plastic explosives.Methods The surface explosives were prepared from the main explosives with different particle sizes and the mechanical sensitivities were compared.Results Due to the high content of binder and the small particle size of RDX, Coated with lower mechanical sensitivities.Conclusion The plastic explosives prepared from the main explosive with the particle size of (40 0 ~ 64) μm have better coating properties and lower mechanical sensitivity