溶胶-凝胶法制备HMX-AP-SiO_2纳米复合含能材料

Preparation of HMX-AP-SiO_2 Nano-composite Energetic Materials by Sol-Gel Method

以正硅酸乙酯为前驱物,采用溶胶-凝胶法制备奥克托金(HMX)-高氯酸铵(AP)-SiO2纳米复合含能材料,采用扫描电镜、X射线衍射分析、BET比表面积等方法对其结构进行表征。结果表明,HMX-AP-SiO2纳米复合含能材料是以SiO2为凝胶骨架,HMX与AP进入凝胶孔洞形成的,其具有纳米网孔结构;差热分析表明,溶胶-凝胶法制备的复合材料的热分解峰温度较物理混合相比大大提前,分解热高于物理混合物。

HMX-AP-SiO2 nano-composite energetic materials were prepared by sol-gel method,using tetraethylorthosilicate as precursor.Its structure was characterized by SEM、 XRD、 BET surface area.The results show that SiO2 gel and HMX-AP are the matrix and filler respectively,HMX-AP-SiO2 nano-composite materials have nano-grid structure.Using thermal analysis（DSC）,compared to physical mixtures,the thermal decomposition temperature of HMX-AP-SiO2 nano-composite materials decrease.