1,1-二叔戊基过氧环己烷热危险性分析

Thermal hazard analysis of 1,1-di( tert-amylperoxy) cyclohexane

为研究1,1-二叔戊基过氧环己烷(DTAC)的热危险性,用差式扫描量热(DSC)仪进行试验,获得DTAC的热分解特性数据;用Friedman法确定热分解动力学参数;用绝热加速量热(ARC)仪进行试验,研究DTAC在绝热条件下的热分解行为;根据动力学分析结果研究不同温度下DTAC热分解反应的最大反应速率到达时间(TMR_(ad))随温度的变化关系,以及自加速分解温度(SADT)与传热系数的关系。结果表明:25 kg高密度聚乙烯材料(HDPE)包装的DTAC溶液的SADT为57. 3℃,运输DTAC应选用传热系数大的包装材料,并注意其温度。

To investigate the thermal hazard of DTAC,DSC was used to test the thermal decomposition characteristics of DTAC,were studied by using DSC,and its kinetic parameters of thermal decomposition were determined by using Friedman method.The thermal decomposition behavior of DTAC under adiabatic conditions was studied by ARC.According to the caculated kinetic parameters,the relationship between the time to maximum rate(TMRad)of DTAC decomposition and temperature,and that between SADT and heat transfer coefficient were obtained.It is discovered that SADT of the 25 kg DTAC solution packed by high density polyethylene(HDPE)is 57.3℃,which calls for package material with a larger heat transfer coefficient and additional care of temperature during transportation.