双芳-3发射药热安全性的实验研究

Experimental Research on the Thermal Safety of SF-3 Gun Propellant

用自行设计的烤燃实验装置,研究了双芳-3发射药的热安全性,得到了自燃延滞期、点火温度和动力学参数,分析了实验现象及规律。结果表明,双芳-3发射药的自动点火温度约为147℃,活化能为154.56 kJ/mol;不同升温速率对双芳-3发射药的点火温度影响不大。烤燃实验中,环境温度不同,双芳-3发射药的自燃延滞期和剧烈程度不同;环境温度越高,自燃延滞期越短,反应程度越剧烈。

The thermal safety of SF-3 gun propellant was studied by a self-designed cook-off test device. The self-ignition delay time, ignition temperature and kinetic parameter of the SF-3 gun propellant were obtained. The experimental phenomenon and rule were analyzed. The results show that the self-ignition temperature of the SF-3 gun pro- pellant is about 147℃ and the activation energy is 154.56 kJ/mol. The heating rate has little influence on the ignition temperature of the gun propellant. The delay time and intensity of self-ignition of the gun propellant in cook-off test are different at different environmental temperature, and the higher the environmental temperature, the shorter the delay time of self-ignition, the more intense the reaction extent.