中文摘要：

采用水热法合成海胆状纳米MnO2 颗粒,用X 射线粉末衍射（XRD）和扫描电子显微镜及X 射线能谱分析（SEM-EDS）对该MnO2 颗粒进行物相组成及结构表征;用固体研磨法制备出质量比为1∶2、1∶5和1∶9的纳米MnO2/CL-20混合物;用差示扫描量热（DSC）法考察了纳米MnO2 对CL-20 热分解性能的影响.结果表明,纳米MnO2 的加入不会改变CL-20热分解过程的最可几机理函数;加入纳米MnO2 后,MnO2/CL-20混合物的热分解峰温明显降低;与CL-20相比,不同质量比的MnO2/CL-20混合物表观活化能降低,表明海胆状纳米MnO2 可以促进CL-20的热分解.

英文摘要：

Sea urchin-shaped nano-MnO2 particles were synthesized using hydrothermal method. The phase composition and structure of MnO2 particles were characterized using X-ray diffraction (XRD)and scanning electron microscope-energy dispersive spectrometry (SEM-EDS).MnO2/CL-20 composites were prepared by grinding the mixture of nano-MnO2 and CL-20 with the mass ratio of 1∶2,1∶5 and 1∶9.The effect of nano-MnO2 particles on the thermal decomposition performance of CL-20 was studied by differential scanning calorimetry (DSC).The results indicate that nano-MnO2 does not change the most probable mechanism function of the thermal decomposition process of CL-20.The thermal decomposition peak temperature of CL-20 significantly decreases with the addition of nano-MnO2 .Compared with pure CL-20,the apparent activation energy of MnO2/CL-20 mixture with different mass ratios reduces,indicating that the sea urchin-shaped nano-MnO2 can accelerate the thermal decomposition of CL-20.