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应用石蜡包覆黑索金(RDX),加入硝酸铜制得混合炸药药柱,以氮气作为保护气在爆炸容器中引爆,制备了碳包覆铜纳米粒子。利用X射线衍射仪(X-Ray Diffraction,XRD)、透射电镜(Transmission Electron Microcopy,TEM)、拉曼光谱仪对产物成分和形貌进行了表征。结果发现:爆轰产物呈球状,粒径分布在20~45 nm;外壳碳包覆层厚度为3 nm,主要由石墨和无定型碳构成。利用差示扫描量热分析仪(Differential Scanning Calorimeter,DSC)研究了碳包覆铜纳米粒子对高氯酸铵(Ammonium Perchlorate,AP)热分解性能的影响,结果表明:将5%碳包覆铜纳米粒子作为催化剂混合加入到AP中,在5、10、20℃/min的升温速率下,AP的高温分解峰分别提前了72.77、72.93、74.77℃;AP的表观活化能下降了27.18 k J/mol,表现出对AP热分解过程具有显著的催化作用。
Paraffin coated black gold (RDX), adding copper nitrate mixed explosive explosive column, with nitrogen as the protective gas detonation in the explosion container, prepared carbon-coated copper nanoparticles. The composition and morphology of the product were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and Raman spectroscopy. The results showed that the detonation products were spherical and the size distribution was 20-45 nm. The thickness of shell carbon coating was 3 nm, which consisted mainly of graphite and amorphous carbon. The effects of carbon-coated copper nanoparticles on the thermal decomposition of ammonium perchlorate (AP) were investigated by Differential Scanning Calorimeter (DSC). The results showed that 5% carbon-coated copper Nanoparticles were added as catalyst to AP. The pyrolysis peaks of AP were 72.77, 72.93 and 74.77 ℃ respectively at the heating rate of 5, 10 and 20 ℃ / min. The apparent activation energy of AP decreased by 27.18 kJ / mol, showing a significant catalytic effect on the thermal decomposition of AP.