Abstract:

Three solid organic peroxides, benzoyl peroxide (BPO), dicumyl peroxide (DCP) and cyclohexanone peroxide (CCP) were tested by using simultaneous TG-DSC analyzer (SDT Q600) with small sample mass, and the thermal data obtained from different scanning rate were analyzed by the Popescu multiple scanning rate method for the first time.Then, the values of self-accelerating decomposition temperature (SADT) of 25 kg standard package were computed according to the thermal explosion theory.The results showed that the values of activation energy and pre-exponential factor of these three solid organic peroxides by using the Popescu multiple scanning rate method were more precise and more credible than that by using the single scanning rate method.Based on correct calculation of these kinetic parameters, SADT can be accurately safely, easily, quickly evaluated with thermodynamic parameters based on thermal explosion theory.

Key words:

有机过氧化物, 热自燃危险性, 热分析动力学, 自加速分解温度

关键词:

有机过氧化物, 热自燃危险性, 热分析动力学, 自加速分解温度