A Novel Ammonium Perchlorate/Graphene Aerogel Nanostructured Energetic Composite: Preparation and Thermal Decomposition
A Novel Ammonium Perchlorate/Graphene Aerogel Nanostructured Energetic Composite: Preparation and Thermal Decomposition
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新型高氯酸铵/石墨烯气凝胶纳米结构含能复合材料：制备和热分解
DOI：
10.1166/sam.2014.1774
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发表时间：
2014-03
影响因子：
0.9
通讯作者：
Huang, Muhua
中科院分区：
文献类型：
--
作者：
Wang, Xuebao;Li, Jinqing;Luo, Yunjun;Huang, Muhua
采用溶胶-凝胶法制备了高氯酸铵（AP）/石墨烯气凝胶（GA）纳米含能复合材料。采用扫描电镜（SEM）、氮气吸附试验和X射线衍射（XRD）等方法对材料的结构进行了表征。采用热重分析/差示扫描量热/红外光谱（TG-DSC-FTIR）研究了其热分解行为。结果表明，所制备的AP/GA纳米结构含能复合材料具有大量的纳米级孔，比表面积为49.18 m2 g-1。XRD结果表明，AP在含能复合材料中以纳米级均匀分散。TG-DSC-FTIR分析表明，GAs对AP的热分解过程有明显的促进作用。加入GA后，AP的高温分解速度加快，其总放热量显著增加，这是由于GA与氧化产物发生氧化反应所致。该研究为亚稳态分子间复合材料的制备提供了一种新的选择，在固体火箭推进剂中具有很大的应用潜力。
A novel ammonium perchlorate (AP)/graphene aerogel (GA) nanostructured energetic composite was prepared by the sol–gel method. The structure was characterized by using scanning electron microscope (SEM), nitrogen sorption tests and X-ray diffraction (XRD). The thermal decomposition behavior was investigated by using thermogravimetric analysis/differential scanning calorimetric/infrared spectrometry (TG-DSC-FTIR). The results show that the as-prepared AP/GA nanostructured energetic composites have numerous nanoscale pores and the specific surface area is 49.18 m2 g–1. The XRD results show that AP homogeneously disperses in the energetic composites at nanometric scale. TG-DSC-FTIR analysis indicates that GAs exhibit high promoting effects in the thermal decomposition process of AP. After incorporating with GAs, the high-temperature decomposition of AP is accelerated and its total heat release is significantly increased which is caused by the oxidation reaction between GAs and the oxidizing products. This study provides a new choice of metastable intermolecular composites which may have great potential in use for the solid rocket propellants.