高氯酸碳酰肼合铅的快速热分解动力学(英文)  

Kinetics of Lead Carbohydrazide Perchl Orate by Flash Pyrolysis

作　　者：胡晓春[1] 张同来[1] 张建国[1] 乔小晶[1] 杨利[1] 孙远华[1] 

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室

出　　处：《火炸药学报》2006年第6期33-37,共5页Chinese Journal of Explosives & Propellants

摘　　要：采用T—jump／FTIR对高氯酸碳酰肼合铅（PbCP）的高温快速热分解反应动力学进行研究，在300～340℃温度范围、0．1MPa的氩气气氛下，由反应过程中铂丝的控制电压变化曲线得出剧烈放热峰的诱导出现时间tx，进而利用tx值计算出目标化合物的快速热分解动力学参数：Ea=70．68kJ·mol^-1，lnA=16．30。研究发现所求得的活化能大大低于采用Kissinger和Ozawa—Doyle法所得的结果，这一现象与其他含能材料的热分解具有很强的一致性。还通过4种主要气体产物在特定吸收剂中的吸收求出了其动力学参数。The exothermic decomposition reaction kinetics of lead carbohydrazide perchlorate （PbCP） was determined by T-jump/FTIR spectroscopy at high temperatures following very rapid heating process. The time-to- exotherm （tx） values evolved from the control voltage traces of the Pt filament during the flash pyrolysis yielded the kinetic parameters in the 300-340℃ range at 0.1 MPa Ar atmosphere： Ea = 70.68 kJ·mol^-1,lnA = 16.30. The activation energy determined was much smaller than that given previously by Kissinger and Ozawa-Doyle method, which also occurred with other energetic materials making these values qualitatively consistent. In addition, the decomposition kinetics of evolution of the major four individual gas products was resolved by the increase in specific absorbances, which might be essential for detailed combustion modeling of solid energetic materials.

关 键 词：物理化学 高氯酸铅 碳酰肼 动力学 热分解 T—jump/FTIR 

分 类 号：O642[理学—物理化学]