Mg/Ba(NO_3)_2热分解动力学和热安全性计算
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摘要
运用热重法和差式扫描量热法研究了烟火药剂Mg/Ba(NO_3)_2在升温速率分别为2. 5、5. 0、10. 0、15. 0、20. 0℃·min-1的热分解过程。采用Flynn-Wall-Ozawa法、Starink法、Kissnger法和一般积分法计算了热分解反应的化学动力学,并计算了Mg/Ba(NO_3)_2的热安全性和热力学参数。结果表明,利用四种热分析动力学方程得到了Mg/Ba(NO_3)_2的活化能、指前因子和化学动力学方程,得到了Mg/Ba(NO_3)_2的热安全性的相关参数中的爆炸临界温度、自加速分解温度以及热力学参数活化自由能、活化焓和活化熵。
The thermal decomposition process of Mg/Ba(NO_3)_2 composition was studied by TG and DSC at the heating rate of 2. 5,5. 0,10. 0 and 20. 0 ℃ ·min-1 respectively. The kinetic parameters of thermal decomposition were calculated by Flynn-Wall-Ozawa method, Starink method, Kissnger method and general integral method. The thermal safety and thermal dynamic parameters of Mg/Ba(NO_3)_2 were calculated. The activation energy, pre-exponential factor, and kinetic equation of Mg/Ba(NO_3)_2 composition were calculated by four thermal analysis kinetics equations. The critical explosion temperature,self-accelerated decomposition temperature,activation free energy,activation enthalpy and activation entropy of Mg/Ba(NO_3)_2 were obtained.
The thermal decomposition process of Mg/Ba(NO_3)_2 composition was studied by TG and DSC at the heating rate of 2. 5,5. 0,10. 0 and 20. 0 ℃ ·min-1 respectively. The kinetic parameters of thermal decomposition were calculated by Flynn-Wall-Ozawa method, Starink method, Kissnger method and general integral method. The thermal safety and thermal dynamic parameters of Mg/Ba(NO_3)_2 were calculated. The activation energy, pre-exponential factor, and kinetic equation of Mg/Ba(NO_3)_2 composition were calculated by four thermal analysis kinetics equations. The critical explosion temperature,self-accelerated decomposition temperature,activation free energy,activation enthalpy and activation entropy of Mg/Ba(NO_3)_2 were obtained.
引文
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[5]周厚俊.烟火药爆炸事故原因分析及爆炸量的计算[J].安徽化工,2017,43(5):95-97.
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[7]张广源,李志华,金韶华,等.加速绝热量热仪用于含能材料热分解研究进展[J],兵器装备工程学报,2016,37(4):85-88.
[8]时烁.湿度对红色药热安全性的影响研究[D].北京:北京理工大学,2015.
[9]TUUKKANEN I M,BROWN S D,CHARSLEY E L,et al.Studies on the ageing of magnesium-strontium nitrate pyrotechnic compositions using isothermal microcalorimetry and thermal analysis techniques[J].Thermochim Acta,2004,417:223-229.
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[11]王文娟.硝酸锶系列烟火药剂的热安全性及改性研究[D].北京:北京理工大学,2013.
[12]胡荣祖,高胜利,赵凤起,等.热分析动力学[M].北京:科学出版社,2008:59-119.
[13]王琼,丁黎,张冬梅,等.含AP的浇铸PBX炸药的热安全性[J].含能材料,2015,23(7):693-694.
[14]HU R Z,MA H X,ZHAO F Q,et al.Studies on Thermal Safety and a Density Functional Theory of 2,2-Trinitroethy-4,4,4-Trinitrobutyrate[J].Chinese Journal of Explosive&Propellants,2013,36(5):8-10.
[15]刘荣海,陈网桦,胡毅亭.安全原理与危险化学品测评技术[M].北京:化学工业出版社,2004:92-196.
[16]师雪娇.硝酸锶系列烟火药的热安全性及数值化模拟研究[D].北京:北京理工大学,2015.
[17]胡荣祖,高红旭,赵凤起,等.1,1’-二甲基-5,5’-偶氦四唑-水合物和2,2’-二甲基-5,5’-偶氦四唑的热安全性[J].含能材料,2011,19(2):126-131.