物理化学学报 >> 2013, Vol. 29 >> Issue (12): 2498-2504.doi: 10.3866/PKU.WHXB201310212

热力学,动力学和结构化学 上一篇    下一篇

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

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   

  1. 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
  • 收稿日期:2013-06-12 修回日期:2013-10-18 发布日期:2013-11-28
  • 通讯作者: 马海霞 E-mail:mahx@nwu.edu.cn
  • 基金资助:

    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)和燃烧与爆炸技术重点实验室基金(9140C3501041001)资助项目

Preparation and Characterization of Superthermite Al/Fe2O3 and Its Effect on Thermal Decomposition of Cyclotrimethylene Trinitramine

ZHAO Ning-Ning1, HE Cui-Cui1, LIU Jian-Bing1, MA Hai-Xia1, AN Ting2, ZHAO Feng-Qi2, HU Rong-Zu2   

  1. 1 School of Chemical Engineering, Northwest University, Xi'an 710069, P. R. China;
    2 Science and Technology on Combustion and Explosion Laboratory, Xi'an Modern Chemistry Research Institute, Xi'an 710065, P. R. China
  • Received:2013-06-12 Revised:2013-10-18 Published:2013-11-28
  • Contact: MA Hai-Xia E-mail:mahx@nwu.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (21073141, 21373161), Program for New Century Excellent Talents in University of Ministry of Education of China (12-1047), Research Fund for the Doctoral Program of Higher Education of China (20126101110009), Science and Technology Foundation of Science and Technology on Combustion and Explosion Laboratory, China (9140C3501041001).

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.

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

Abstract:

Hollow Fe2O3 nanorods were prepared using a hydrothermal method, and were then combined with Al nanoparticles to form superthermite Al/Fe2O3 by ultrasonic mixing. Fe2O3 and Al/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 of Al/Fe2O3, Al, and nano-Fe2O3 powders on the thermal decomposition of cyclotrimethylene trinitramine (RDX) were investigated using differential scanning calorimetry (DSC). The results show that the superthermite Al/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 Al/Fe2O3, Al nanopowders, and Fe2O3 nanorods on the thermal decomposition of RDX are that the secondary decomposition peaks become distinct and the peak temperature decreases.

Key words: Nano-Fe2O3, Superthermite Al/Fe2O3, Cyclotrimethylene trinitramine, Hydrothermal method, Ultrasonically dispersed method, Thermal decomposition

MSC2000: 

  • O643