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中文摘要：
为改善RDX-CMDB推进剂的燃烧性能和安全性能,以硬脂酸铅为包覆剂,采用化学沉淀法对RDX填料进行了表面包覆,制备了RDX/硬脂酸铅复合粒子。用SEM、XPS对包覆效果进行了表征;对包覆前后样品的机械感度进行了测试和对比;采用DSC对分别由包覆前后RDX制成的推进剂进行了热分解催化性能测试。结果表明,经过硬脂酸铅包覆,RDX的机械感度得到明显降低,撞击感度特性落高（H50）升高了17.6 cm,摩擦爆炸概率（P）降低了60%。与加有纯RDX的推进剂样品相比,添加RDX/硬脂酸铅复合粒子推进剂样品的硝化棉/硝化甘油放热峰峰温降低了约3.7℃,总放热量也得到了提高。
英文摘要：
In order to improve safety and combustion properties of RDX-CMDB propellant, lead stearate was used to coat RDX by means of chemical precipitation method, then the RDX/lead stearate composite particles were prepared. The samples were characterized by using SEM （scanning electron microscope） and XPS （X-ray photoelectron spectrometry）. The mechanical sensitivity of RDX samples before and after coating was measured and contrasted. Meanwhile, thermal decomposition catalytic properties of RDX-CMDB propellant before and after coating were investigated respectively by DSC. The results show that the mechanical sensitivity of RDX coated by lead stearate decreases significantly ; the impact sensitivity characteristic height （ H50 ） increases by 17.6 cm, and the friction explosion probability decreases by 60%. Compared with the propellant containing uncoated RDX, the exothermic peak temperature of NC/NG with RDX/lead stearate composite particles decreases by about 3.7℃, and the total exothermic quantity of the propellant increases.
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