【摘要】 [目的]缩合酯是合成创制杀菌剂烯肟菌胺的重要中间体。研究了缩合酯的热安全性，为企业生产过程安全提供科学依据。[方法]采用动态差示扫描量热，以及差示扫描量热和绝热加速量热联合测试技术，研究获取缩合酯的热稳定性及分解动力学参数。[结果]缩合酯具有热敏性，起始分解温度为198.01℃，分解放热量为1940 kJ/kg；分解动力学研究表明，缩合酯热分解最大反应速率到达时间为8、24 h，对应的温度T_D8、T_D24分别为161.5、147.5℃。[结论]缩合酯具有热不稳定性，分解过程放热剧烈，失控后果严重；应用2种模拟方法所获得的动力学结果具有很好的一致性。更多还原

【Abstract】 [Aims] Condensed ester is an important intermediate in the synthesis of the innovative fungicide fenaminstrobin. This research investigated the thermal safety of condensation ester to provide a scientific basis for ensuring the safety in the production process. [Methods] Dynamic differential scanning calorimetry（DSC）and a combination of DSC and adiabatic accelerating rate calorimetry（ARC） testing techniques were employed to study and obtain parameters related to the thermal stability and decomposition kinetics of condensed ester.[Results] Condensed ester exhibited thermal sensitivity, with an initial decomposition temperature of 198.01 ℃ and a decomposition heat release of 1940 kJ/kg. Decomposition kinetics studies revealed that the thermal decomposition reaction rate of condensed esters reached its maximum at 8 and 24 h, corresponding to temperatures T_D8 and T_D24 of 161.5 and 147.5 ℃. [Conclusions] Condensed ester demonstrates thermal instability, with intense heat release during the decomposition process and severe consequences upon losing control. The kinetic results obtained from both simulation methods show good consistency.更多还原