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Thermal Safety Performance Evaluation for Typical Free Radical Polymerization Initiator of Tert‐butyl Peroxypivalate
ChemistrySelect ( IF 2.1 ) Pub Date : 2020-09-15 , DOI: 10.1002/slct.202002798
Xingliang Wu 1 , Dabin Liu 1 , Yabei Xu 2 , Zichun Meng 1 , Feiyang Xu 1 , Xu Wang 1 , Weiguo Cao 2 , Sen Xu 1
Affiliation  

Tert‐butyl peroxypivalate is a typical free radical polymerization initiator due to the active O−O peroxide group, and it is a thermal instability material. To evaluate the thermal safety of tert‐butyl peroxypivalate, Dewar test, Differential Scanning Calorimetry (DSC) and Accelerating Rate Calorimeter (ARC) were used to study the self‐accelerating decomposition temperature (SADT), thermal performance parameters and kinetic parameters. The results of DSC reveal that the onset decomposition temperature of the initiator was 76.30 °C. The apparent activation energy (Ea) was 91.86 kJ mol−1 by Kissinger method. In ARC test, the onset decomposition temperature was 40.64 °C. The adiabatic temperature of the reaction was 86.68 °C, and the apparent activation energy was 120.14 kJ mol−1. The results of Dewar test show that the SADT of the initiator was 38 °C. The simulated SADT value by thermal analysis software (AKTS) was about 35 °C which was basically consistent with the results of Dewar test.

中文翻译:

典型的过氧新戊酸叔丁酯自由基聚合引发剂的热安全性能评估

过氧新戊酸丁酯是典型的自由基聚合引发剂,由于具有活性的O-O过氧化物基团,并且是热不稳定性材料。为了评估过氧新戊酸丁酯的热安全性,使用杜瓦测试,差示扫描量热法(DSC)和加速速率量热仪(ARC)研究了自加速分解温度(SADT),热性能参数和动力学参数。DSC的结果表明,引发剂的起始分解温度为76.30℃。表观活化能(E a)为91.86 kJ mol -1通过基辛格方法。在ARC测试中,起始分解温度为40.64℃。反应的绝热温度为86.68℃,表观活化能为120.14kJ mol -1。杜瓦测试的结果表明,引发剂的SADT为38°C。热分析软件(AKTS)模拟的SADT值约为35°C,这与杜瓦测试的结果基本一致。
更新日期:2020-09-15
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