氧化锰纳米管及其超级铝热剂:制备及对环三亚甲基三硝胺热分解的影响  

MnO_2 Nanotube and Its Super Thermite:Preparation and Their Effect on Thermal Decomposition of Cyclotrimethylene Trinitramine

作　　者：安亭[1] 赵凤起[1] 马海霞[2] 任晓宁[1] 赵宁宁[2] 王琼[1] 杨勇[3] 

机构地区：[1]西安近代化学研究所燃烧与爆炸技术重点实验室,西安710065 [2]西北大学化工学院,西安710069 [3]清华大学化学系,北京100084

出　　处：《无机化学学报》2015年第1期97-102,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21173163);燃烧与爆炸技术重点实验室基金(No.9140C350302120C3501)资助项目

摘　　要：采用水热法制备了MnO2纳米管,以其与纳米铝粉为原料,采用超声分散复合的方法,制备了超级铝热剂Al/MnO2。利用粉末X射线衍射(XRD)、扫描电子显微镜(SEM)及能量散射光谱仪(EDS)对产物的物相、组成、形貌和结构进行分析表征,并运用差示扫描量热法(DSC)研究了MnO2纳米管及其超级铝热剂对环三亚甲基三硝胺热分解特性的影响。结果表明,水热法制备的纳米MnO2呈管状均匀分布,球形纳米Al与管状纳米MnO2相互依附,分散较均匀;MnO2纳米管及其超级铝热剂的加入均改变了环三亚甲基三硝胺的热分解行为及分解历程,使原有占主导的液相分解变为二次的气相反应加剧,使环三亚甲基三硝胺主分解峰形发生了明显的改变。The nano-MnO2 was prepared by hydrothermal method,and then super thermite Al/MnO2 was prepared by ultrasonic dispersion method using nano-MnO2 and Al nanoparticles as raw materials.The physical phase,composition,morphology and structure of products were characterized by X-ray diffraction（XRD） and scanning electron microscope-energy dispersive spectrometer（SEM-EDS）.The catalytic effect of MnO2 nanotube and the super thermite on the thermal decomposition of cyclotrimethylene trinitramine were investigated by differential scanning colorimetry（DSC）.The results indicate that nano-MnO2 is in tubular structure,and the globose nano-Al particles are homodispersed on the surface of MnO2 nanotube.MnO2 nanotube and its super thermite influence the thermal decomposition behavior and decomposition process of cyclotrimethylene trinitramine.They can change the primary decomposition of liquid phase to the reaction of secondary gas phase and can change the shape of main decomposition peak obviously.

关 键 词：材料科学 纳米MNO2 超级铝热剂 环三亚甲基三硝胺 水热法 超声分散法 热分解 

分 类 号：O611.62[理学—无机化学] O612.7[理学—化学]