摘要
采用差示扫描量热仪研究了2,4-二硝基苯甲醚(DNAN)在RDX中的非等温结晶行为,运用多种数学模型对DNAN的结晶动力学进行数据处理。结果表明,RDX能够降低过冷度,消除自加热。由Avrami方程计算得到了DNAN结晶动力学的Avrami指数为2.34,确定了结晶过程的机理函数g(α)。由Avrami-Ozawa方程获得了Ozawa指数为0.77。由Hu-Zhao-Gao-Zhao方程获得了结晶动力学参数活化能为214.99 kJ.mol-1。
The non-isothermal crystallization of 2,4-Dinitroanisole （DNAN） in RDX was studies by differential scanning calorimetry. Several kinetics models were used to investigate the crystallization behavior of DNAN. The results show that RDX can reduce the super-cooling degree of DNAN and eliminate self-heating of DNAN crystallization. The crystallization kinetics exponent obtained by Avrami equation is 2.34. The mechanism function g（α） was determined. Ozawa exponent of non-isothermal crystallization （rn） is 0.77 from Avrami-Ozawa equations. Activation energy （Ea） of DNAN non-isthermal crystallization is 214.99 kJ · mol^-1 with Hu-Zhao-Gao-Zhao equation.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2012年第4期423-426,共4页
Chinese Journal of Energetic Materials
关键词
分析化学
结晶动力学
非等温结晶
DNAN
DSC
physical chemistry
crystallization kinetics
non-isothermal crystallization
DNAN
DSC
