PDADN-RDX-CMDB推进剂催化燃烧特性研究

采用热分析、微热电偶技术、燃速测试、熄火表面的扫描电镜观测等实验方法，研究了不同类型的复合催化剂对PDADN－RDX－CMDB推进剂燃烧特性的影响。结果发现，邻苯二甲酸铅／雷索辛酸铜／炭黑与雷索辛酸铅铜／炭黑两类复合催化剂可较好地改善PDADN－RDX－CMDB推进剂的燃烧特性，明显降低其压强指数且同时提高燃速，基于实现现象的观测结果分析，提出了“气泡－凝取相反应”理论，解释了该类推进剂在中枢 压区发生的“超速燃烧”现象。

Catalysis combustion property and mechanism of PDADN-RDX-CMDB propellant

In order to study effects of several kinds of composite catalysts on the combustion behavior of PDADN-RDX-CMDB propellant,different means such as thermogravimetric loss,microthermo couple,burning-rate experiment and SEM of quenched sample surface were adopted.The results show that two kinds of composite catalysts,which are ΦPb-βCu-CB and βPbCu-CB,can obviously improve the combustion behavior of PDADN-RDX-CMDB propellant,combustion pressure exponent are decreased and burning-rate are increased.The "bubble-condensation reaction" theory are proposed to explain "super rate combustion" phenomenon of PDADN-RDX-CMDB with composite catalysts propellant.