三种有机叠氮化合物的热危险性和动力学  

Thermal hazards and kinetics of three organic azide compounds

作　　者：赵隧军 ZHAO Suijun(School of Management and Engineering,Capital University of Economics and Business,Beijing 100070,China;Nutrichem Co.,Ltd.,Beijing 100192,China)

机构地区：[1]首都经济贸易大学管理工程学院,北京100070 [2]北京颖泰嘉和生物科技股份有限公司,北京100192

出　　处：《化学工程》2025年第1期17-22,共6页Chemical Engineering(China)

摘　　要：为研究TAZ(叠氮化三苯基甲烷)、BAZ(苄基叠氮)、MAZ(2-叠氮基乙酸甲酯)3种有机叠氮化合物的热危险性,使用DSC(差示扫描量热仪)和ARC(绝热加速量热仪)进行热稳定性测试,获得3种物质的热分解特性参数和风险评估等级。采用Friedman等转化率法和模型法求解其动力学参数,并预测3种物质热分解反应的温度θ_(D8)和θ_(D24)。结果表明:3种物质的分解放热量较大,潜在爆炸危险性较高,其中TAZ的热分解危险等级为2级,而BAZ和MAZ为3级。通过等温DSC实验方法获得3种物质的热分解机理,TAZ热分解反应符合n级动力学的机理,而BAZ和TAZ均具有自催化的特性。通过Friedman法和模型法获得TAZ、BAZ、MAZ的θ_(D8)分别为128.5—130.9℃、121.4—130.6℃、118.1—129.3℃,θ_(D24)分别为118.4—121.3℃、108.5—115.4℃、105.6—116.6℃。In order to study the thermal hazard of three organic azide compounds TAZ(triphenylmethane azide),BAZ(benzyl azide)and MAZ(methyl 2-azide acetate),the thermal stability tests were performed by DSC and ARC,and the thermal decomposition characteristics and risk assessment grades of the three compounds were obtained.The kinetic parameters were solved by Friedman conversion method and model method,and the temperatureθ_(D8) andθ_(D24) of the thermal decomposition reaction of the three substances were predicted.The results show that the three substances have higher fractionation heat and higher potential explosion risk.The thermal decomposition risk of TAZ is level 2,while BAZ and MAZ are level 3.The thermal decomposition mechanism of the three substances was obtained by isothermal DSC experiment.The thermal decomposition reaction of TAZ conforms to the n-order kinetic mechanism,while BAZ and TAZ have the characteristics of autocatalysis.Theθ_(D8) values of TAZ,BAZ and MAZ are obtained by Friedman method and model method at 128.5-130.9℃,121.4-130.6℃and 118.1-129.3℃,respectively,andθ_(D24) is 118.4-121.3℃,108.5-115.4℃and 105.6-116.6℃.

关 键 词：有机叠氮化合物 热危险性 热分解 动力学 

分 类 号：X937[环境科学与工程—安全科学]