Abstract The thermal behaviors of azo-compounds have been a topic received extensive attention. This paper attempted to obtain the decomposition kinetics of 2,2′-azobis(2-methylpropionamidine) dihydrochloride (AIBA) by applying differential scanning calorimeter (DSC) experiments and slow cook-off test. Moreover, the thermal hazards parameters, such as self-accelerating decomposition temperature (SADT), time to maximum rate under adiabatic conditions (TMRad), time to conversion limit (TCL), were predicted. The results indicate that AIBA is a highly exothermic and hazardous substance, and the kinetic model including two-step parallel reaction paths, the n-order reaction and the autocatalytic reaction, is credible to evaluate the decomposition process of AIBA. Based on the kinetic model and fiberboard packaging, the simulated SADT of 50 kg drum and 25 kg box are 94 °C and 91 °C, respectively. The TMRad is 104.66 °C under 24 h, and 113.05 °C of 8 h.

中文翻译：

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2,2'-偶氮双(2-甲基丙脒)二盐酸盐分解动力学及热危害的实验与模拟研究

摘要 偶氮化合物的热行为一直是一个受到广泛关注的课题。本文试图通过差示扫描量热仪（DSC）实验和慢蒸煮试验获得2,2'-偶氮双（2-甲基丙脒）二盐酸盐（AIBA）的分解动力学。此外，还预测了热危害参数，例如自加速分解温度 (SADT)、绝热条件下达到最大速率的时间 (TMRad)、转化极限时间 (TCL)。结果表明，AIBA是一种高放热和危险物质，包括两步平行反应路径、n级反应和自催化反应的动力学模型是评估AIBA分解过程的可靠方法。基于动力学模型和纤维板包装，50 kg 桶和 25 kg 箱的模拟 SADT 分别为 94 °C 和 91 °C。TMRad 在 24 小时内为 104.66 °C，在 8 小时内为 113.05 °C。