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高等学校化学研究 ›› 2010, Vol. 26 ›› Issue (4): 626-629.

• Articles • 上一篇    下一篇

Evaluation of Thermal Hazard of Composite Modified Double-base Propellant by Microcalorimetery Method

XUE Liang, ZHAO Feng-qi*, XING Xiao-ling, XU Si-yu, PEI Qing, GAO Yin and HU Rong-zu   

  1. Xi’an Modern Chemistry Research Institute, Xi’an 710065，P. R. China
  • 收稿日期:2009-07-22 修回日期:2009-11-05 出版日期:2010-07-25 发布日期:2010-10-01
  • 通讯作者: ZHAO Feng-qi, E-mail: npecc@163.com
  • 基金资助:

    Supported by the National Natural Science Foundation of China(No.20573098) and the Science and Technology Foundation of the National Defense Key Laboratory of Propellant and Explosive Combustion in China(No.9140C3501020901).

Evaluation of Thermal Hazard of Composite Modified Double-base Propellant by Microcalorimetery Method

XUE Liang, ZHAO Feng-qi*, XING Xiao-ling, XU Si-yu, PEI Qing, GAO Yin and HU Rong-zu   

  1. Xi’an Modern Chemistry Research Institute, Xi’an 710065，P. R. China
  • Received:2009-07-22 Revised:2009-11-05 Online:2010-07-25 Published:2010-10-01
  • Contact: ZHAO Feng-qi, E-mail: npecc@163.com
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.20573098) and the Science and Technology Foundation of the National Defense Key Laboratory of Propellant and Explosive Combustion in China(No.9140C3501020901).

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摘要： The thermal decomposition behavior of composite modified double-base(CMDB) propellant containing cyclotrimethylene trinitramine(RDX) was studied via a Calvet microcalorimeter at five different heating rates. The activation energy(E) and the pre-exponential factor(A) of two obvious exothermic processes were obtained by Kissinger’s method and Ozawa’s method. The entropy of activation(ΔS≠), the enthalpy of activation(ΔH≠), and the free energy of activation(ΔG≠) of the first stage were calculated. To evaluate the thermal hazard of the RDX-CMDB propellant, the critical temperature of thermal explosion(Tb), the self acceleration decomposition temperature(TSADT), the adiabatic decomposition temperature increment(ΔTad) and the time-to-explosion of adiabatic system(t) were presented as 145.3 °C, 138.15 °C, 1634 K and 583.71 s(n=0) and 586.28 s(n=1), respectively.

关键词: CMDB propellant, Microcalorimeter, Critical temperature of thermal explosion, SADT, Adiabatic time-to-explosion

Abstract: The thermal decomposition behavior of composite modified double-base(CMDB) propellant containing cyclotrimethylene trinitramine(RDX) was studied via a Calvet microcalorimeter at five different heating rates. The activation energy(E) and the pre-exponential factor(A) of two obvious exothermic processes were obtained by Kissinger’s method and Ozawa’s method. The entropy of activation(ΔS≠), the enthalpy of activation(ΔH≠), and the free energy of activation(ΔG≠) of the first stage were calculated. To evaluate the thermal hazard of the RDX-CMDB propellant, the critical temperature of thermal explosion(Tb), the self acceleration decomposition temperature(TSADT), the adiabatic decomposition temperature increment(ΔTad) and the time-to-explosion of adiabatic system(t) were presented as 145.3 °C, 138.15 °C, 1634 K and 583.71 s(n=0) and 586.28 s(n=1), respectively.