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制备了含纳米3-硝基邻苯二甲酸铅、纳米对氨基苯甲酸铜和炭黑复配催化剂（NPAC）的 RDX/CMDB 推进剂，用靶线法测试了推进剂的燃速，用热重分析（TG）、常压和高压 DSC、微型热电偶、单幅彩色摄影和 SEM-EDS 联用分别测试了热分解性能、燃烧波火焰温度分布、熄火表面形貌和熄火表面的元素。结果表明，与普通3-硝基邻苯二甲酸铅、对氨基苯甲酸铜和炭黑复配催化剂（PPAC）相比，NPAC 催化剂可提高 RDX/CMDB 推进剂中、低压段的燃速，降低其压强指数，拓宽其燃烧平台范围；NPAC 可使推进剂低温分解放热峰向低温方向移动，而使高温放热峰向高温方向移动，并使推进剂热分解的放热量增大。NPAC 可使推进剂的表面反应区、嘶嘶区和暗区的厚度增大，并使各区温度升高；含 NPAC 的推进剂的熄火表面碳骨架上的铅、铜元素聚集体的平均粒径小于加入 PPAC复配催化剂的推进剂。“,”The burning rate of the RDX/CMDB propellant containing composite catalysts of nanometer 3-nitro phthalic acid lead,nanometer p-amino benzoic acid copper and carbon black (NPAC)was determined by the target line method.Thermal decomposition characteristics,flame temperature distribution of combustion wave,surface morphology and element on flameout surface were tested by TG,high pressure DSC,miniature thermocouple,a sin-gle color photography and SEM-EDS ,respectively.The results show that compared with the composite catalysts of 3-nitro phthalic acid lead,p-amino benzoic acid copper and carbon black (PPAC),NPAC makes the burning rate of the propellant increase and pressure exponent decrease,and broaden its plateau range.DSC results show that, NPAC can make the first decomposition exothermic peak move to lower temperature zone,the second temperature exothermic peak move to higher temperature zone,and increase the heat of thermal decomposition of propellant. NPAC increases the thickness of the surface reaction zone,hissing zone and dark zone,and increases the tempera-ture of the zones.The average particle of aggregates containing lead and copper on carbon skeleton in the flameout flame surface on the propellant containing NPAC is lower than that on the propellant with PPAC catalyst.