超级铝热剂Al／Fe2O3的制备、表征及对环三亚甲基三硝胺热分解的影响  

Preparation and Characterization of Superthermite Al/Fe_2O_3 and Its Effect on Thermal Decomposition of Cyclotrimethylene Trinitramine

作　　者：赵宁宁[1] 贺翠翠[1] 刘健冰[1] 马海霞[1] 安亭[2] 赵凤起[2] 胡荣祖[2] 

机构地区：[1]西北大学化工学院,西安710069 [2]西安近代化学研究所燃烧与爆炸技术重点实验室,西安710065

出　　处：《物理化学学报》2013年第12期2498-2504,共7页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(21073141,21373161);教育部新世纪优秀人才支持计划基金(12-1047);高等学校博士学科点专项科研基金(20126101110009);燃烧与爆炸技术重点实验室基金(9140C3501041001)资助项目~~

摘　　要：采用水热法制备了中空短棒状纳米Fe2O3,并用超声分散法将其与纳米Al颗粒复合为单金属氧化基超级铝热剂.利用X射线粉末衍射(XRD)、傅里叶变换红外(FTIR)光谱、扫描电镜及能量散射光谱仪(SEM-EDS)对样品进行表征.并运用差示扫描量热法(DSC)对比研究了超级铝热剂Al/Fe2O3、Al粉和纳米Fe2O3对环三亚甲基三硝胺(RDX)热分解特性的影响.结果表明:超级铝热剂的加入改变了RDX的热分解过程,并加剧了RDX的二次气相反应;随着超级铝热剂含量的增加,RDX的分解峰峰形发生了明显的改变;Al/Fe2O3、Al粉和Fe2O3对RDX热分解的作用主要表现为二次分解峰逐渐明显且峰温降低.Hollow Fe2O3 nanorods were prepared using a hydrothermal method, and were then combined with AI nanoparticles to form superthermite AI/Fe2O3 by ultrasonic mixing. Fe2O3 and AI/Fe2O3 were characterized using X-ray powder diffraction （XRD）, Fourier-transform infrared （FTIR） spectroscopy, and scanning electron microscopy-energy dispersive spectroscopy （SEM-EDS）. The effects ofAI/Fe2O3, AI, and nano-Fe2O3powders on the thermal decomposition of cyclotrimethylene trinitramine （RDX） were investigated using differential scanning calorimetry （DSC）. The results show that the superthermite All Fe2O3 affects the thermal decomposition of RDX and greatly enhances its secondary gas-phase reaction. The shapes of the main RDX decomposition peaks changed with increasing superthermite content. The main influences of superthermite AI/Fe2O3, AI nanopowders, and Fe2O3 nanorods on the thermal decomposition of RDX are that the secondary decomposition peaks become distinct and the peak temperature decreases.

关 键 词：纳米Fe2O3超级铝热剂Al FE2O3 环三亚甲基三硝胺 水热法 超声分散法 热分解 

分 类 号：TQ560.1[化学工程—炸药化工] TB383.1[一般工业技术—材料科学与工程]