Effect of Amounts of Aluminum on Thermal Decomposition of Aluminized Explosives Based on RDX
The thermal behavior and non-isothermal decomposition reaction kinetics of the aluminized explosives based on RDX with different amounts of aluminum were investigated by differential scanning calorimetry (DSC) and thermogravimetry and differential thermogravimetry (TG-DTG). The results show that the amounts of aluminum is an important factor that affects the decreasing of apparent activation energy, improving the reaction rate and accelerating the thermal decomposition. As the amounts of aluminum increase, the exothermic peak temperature, apparent activation energy (E) and critical temperatures of thermal explosion (Tb) all decrease. The apparent activation energy of the four samples are: 1#: 201.64 kJ.mol-1; 2#: 198.75 kJ.mol-1; 3#: 193.26 kJ.mol-1; 4#: 185.36 kJ.mol-1；The corresponding critical temperatures of thermal explosion are: 1#: 219.55℃; 2#: 218.77℃; 3#: 215.22℃; 4#: 213.15℃. As the amounts of aluminum increase, the entropy of activation (ΔS≠) and enthalpy of activation (ΔH≠) decrease while the free energy of activation (ΔG≠) hardly changes.
ZHANG Guoying YANG Li WANG Hao TANG Shimin ZHANG Tonglai ZHOU Zunning
State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100 Xian Modern Chemistry Research Institute,Xian 710065,China
国际会议
2011 International Autumn Seminar on Propellants,Explosives and Pyrotechnics(2011国际推进剂、炸药、烟火技术秋季研讨会)
南京
英文
376-379
2011-09-20（万方平台首次上网日期，不代表论文的发表时间）