Acta Phys. -Chim. Sin. ›› 2013, Vol. 29 ›› Issue (12): 2498-2504.doi: 10.3866/PKU.WHXB201310212

• THERMODYNAMICS, KINETICS, AND STRUCTURAL CHEMISTRY • Previous Articles     Next Articles

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).

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