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为获得偶氮二异丁腈(AIBN)在各种热应力条件下的危险参数,通过简化的压力容器试验测试AIBN的热分解激烈性等级,采用差示扫描量热仪(DSC)和绝热量热仪(ARC)对AIBN的热分解过程进行研究,用动力学与热稳定性分析软件AKTS计算动力学参数在整个反应进程中的变化情况,并根据ARC测试结果推算自加速分解温度(TSADT)。结果表明:AIBN的热分解激烈性为Ⅱ类,易呈现爆炸特性;其初始分解温度和TSADT很低,分别约为78℃和61℃,且分解放热过程和熔融吸热过程同时发生。因此,在AIBN的生产、使用、贮存和运输等过程中应加强温度监控,并根据实际情况采取降温措施。
In order to obtain the hazardous parameters of AIBN under various thermal stress conditions, the thermal decomposition severity of AIBN was tested in a simplified pressure vessel test using differential scanning calorimetry (DSC) and thermal insulation The thermal decomposition process of AIBN was studied by ARC. The kinetic and thermal stability analysis software AKTS was used to calculate the change of kinetic parameters during the whole reaction process. Based on the ARC test results, the self-accelerating decomposition temperature (TSADT) . The results show that the thermal decomposition of AIBN is Class Ⅱ and its explosive properties are easily exhibited. The initial decomposition temperature and TSADT are very low, about 78 ℃ and 61 ℃ respectively, and the decomposition and exothermic processes occur simultaneously. Therefore, temperature monitoring should be strengthened during the production, use, storage and transportation of AIBN, and cooling measures should be taken according to the actual situation.