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


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
  • 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).


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