Abstract: To improve the safe and mechanical properties of composite solid propellant with RDX，chemical modification method was used to modify RDX with Poly (3，4-ethylenedioxythiophenes). The microstructure and morphology of modified RDX and RDX were characterized by SEM，FTIR，DTA，TGA，XPS and XRD measurements. The surface conductivity of modified RDX had greatly increased to 5×10-5 S/cm. The impact sensitivity and friction sensitivity of modified RDX had greatly decreased. In addition，PET propellants with PEDOT/RDX and RDX were manufactured，and the tensile property of PET propellant with PEDOT/RDX was higher than that with RDX，and the energy had no decrease.

Key words: RDX；Poly (3，4-ethylenedioxythiophenes)；Sensitivity；Surface modification；Composite solid propellant

摘要： 为改善含RDX复合固体推进剂的安全性能和力学性能，采用化学包覆方法，对RDX进行了聚3，4-乙烯二氧噻吩(PEDOT)包覆处理，并对包覆前后的RDX进行SEM，FTIR，DTA，TGA，XPS和XRD分析表征。对包覆RDX的表面导电性能进行测试，导电率达5×10-5S/cm，对包覆RDX的机械感度进行了测试，撞击、摩擦感度得到显著降低。进一步对PEDOT/RDX和RDX的PET四组元推进剂进行了装药，得出包覆后推进剂的拉伸性能比未包覆的有显著提高，同时PEDOT包覆RDX后，固体推进剂的能量没有损失。

关键词: RDX；聚3，4-乙烯二氧噻吩；感度；表面改性；复合固体推进剂