Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (02): 281-288.doi: 10.3866/PKU.WHXB20110213

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

Preparation, Characterization, Decomposition Mechanism and Non-Isothermal Decomposition Reaction Kinetics of the Super Thermite Al/CuO Precursor

AN Ting, ZHAO Feng-Qi, YI Jian-Hua, FAN Xue-Zhong, GAO Hong-Xu, HAO Hai-Xia, WANG Xiao-Hong, HU Rong-Zu, PEI Qing   

  1. Xi'an Modern Chemistry Research Institute, Xi'an , 710065, P. R. China
  • Received:2010-08-12 Revised:2010-09-27 Published:2011-01-25
  • Contact: ZHAO Feng-Qi E-mail:npecc@163.com
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20573098) and Science and Technology Foundation of National Defense Key Laboratory of Propellant and Explosive Combustion in China (9140C3501041001).

Abstract:

The super thermite Al/CuO precursor was prepared using Cu(NO3)2·3H2O, C2H5OH, 1,2-epoxy propane and nano-Al as raw materials under ultrasonic conditions by the sol-gel method. Our results show that the precursor components are Al and Cu2(OH)3NO3. The thermal behavior and thermal decomposition mechanism of the nano super thermite Al/CuO precursor were investigated by thermogravimetric- differential scanning colorimetric-Fourier transform infrared spectrum-mass spectrometry analysis (TG- DSC-FTIR-MS). The decomposition reaction kinetics of the precursor was investigated by TG-DTG analysis at different heating rates and the kinetic parameters were calculated using six kinetic analytical methods. The activation energy, reaction order, frequency factor and other kinetic parameters were obtained and the kinetic equation of the decomposition process could be expressed as: dα/dt=1014.0×4α3/4exp(-2.0×104/T).

Key words: Super thermite, Al/CuO, Sol-gel method, Thermal decomposition mechanism, Decomposition reaction kinetics

MSC2000: 

  • O643