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在入射激波作用下,利用瞬态光谱测试系统研究了纳米铝对硝基甲烷快速反应的影响,对快速反应过程中产生的NO2、CO、CO2、CH2O、H2O、AlO等主要产物的出现时间和辐射强度进行了测量。研究发现:添加纳米铝(1g)后,硝基甲烷(1ml)点火延迟时间提前了60%;其它产物的出现时间缩短了46%~60%,辐射强度增强了30%~100%;激波速度和反应温度分别提高了1.4和2.2倍。结果表明纳米铝明显加速了硝基甲烷快速反应过程,并使其爆炸效率大大提高。由实验观察到的结果,结合热力学和动力学方面的分析,对纳米铝催化硝基甲烷快速反应的机理进行了探索性的分析。此研究将有助于深入了解新型燃料空气炸药(FAE)反应的微观机理。 相似文献
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Generalized Mei Conserved Quantity of Mei Symmetry for Mechanico-electrical Systems with Nonholonomic Controllable Constraints
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On the basis of the total time derivative along the trajectory, we study the generalized Mei conserved quantity of Mei symmetry for mechanico-electrieal systems with nonholonomic controllable constraints. Firstly, the definition and criterion of Mei symmetry for mechanico-electrical systems with nonholonomie controllable constraints are presented. Secondly, a coordination function is introduced, and the conditions of existence of generalized Mei conserved quantity as well as the forms are proposed. Lastly, an example is given to illustrate the application of the results. 相似文献
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