运用高压差示扫描量热法和热重法研究了普通级以及纳米级的铝、镍、铜金属粉对于HMX热分解特性的影响 ,结果表明 ,纳米铜对于HMX的凝聚相分解作用最明显 ,且这种催化作用会由于纳米铜含量的减少或体系压强的增大而变弱。基于恒温DSC实验数据计算得到的活化能结果 ,提出了纳米铜对于HMX热分解的一次催化 ,二次催化以及反应作用部位的观点

The thermal decomposition characteristics of HMX influenced by the addition of aluminum,nickel,copper with different particle size(general and nano)were studied by PDSC and TG The result shows that the nano copper have the greatest influence on the properties of condensed phase decomposition of HMX among the metal powders Such catalysis effect of nano copper will be weakened by the decrease of the content of naon copper or the increase of the system pressure Based on the kinetics result inferred from the isothermal DSC data,this catalysis mechanics are described to the efficacy of first catalysis,secondary catalysis and reaction site effect of nano copper on HMX

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国家自然科学基金 (5 9986 0 0 3);国家重点实验室基金