摘要
由非定温热分解的动力学积分方程,当反应深度α取相同数值时,通过评价函数推导出非线性等转化率积分(NL-INT)法求解热分解反应表观活化能的数学表达式。根据升温速率分别为5、10、20K.min-1的热失重分析曲线,用NL-INT法计算了HMX、HMX基PBX、TATB、PETN炸药和F2314、SD-33黏结剂的热分解表观活化能,并分析和讨论了用NL-INT法和Ozawa法的计算结果。研究结果表明,用NL-INT法能克服因近似处理积分式和选择热分解机理函数带来的误差,获得的表观活化能比较准确。
The mathematics expression of apparent activation energy of thermal decomposition reaction calculated from integral isoeonversional non-linear（NL-INT） method was derived from the evaluation function when decomposition extent α was the same value from non-isothermal decomposition kinetic equation. The thermal decomposition apparent activation energy of HMX, HMX based PBX,TATB,PETN explosives and F2314 ,SD-33 bonders were calculated by NL-INT method based on the TG curves at heating rates of 5,10 and 20 K.min^-1 ,respectively,and the results calculated by NL-INT method and Ozawa＇s method were analyzed and discussed. Results show that the method can conquer errors caused by approximation of temperature integral and choice of mechanism function, and the apparent activation energy obtained were more nicety.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2009年第5期578-582,共5页
Chinese Journal of Energetic Materials
关键词
物理化学
炸药
热分析
非线性等转化率积分法
表观活化能
physical chemistry
explosive
thermal analysis
integral isoeonversional non-linear method
apparent activation energy
