摘要
为研究杂质对二叔丁基过氧化物(DTBP)热稳定性的影响,利用C600微量热仪对DTBP与杂质的混合物进行热分解动力学试验研究,测定了纯DTBP在不同升温速率下及其与杂质的混合物在0.5K·min-1升温速率下的起始放热温度和分解热,并计算得到DTBP热分解反应的动力学参数。依据Arrhenius定律和化学反应理论确定了其与水、混合酸、NaOH、NaCl、铁和橡胶等杂质混合后活化能以及指前因子,研究表明,水、混合酸、NaOH、NaCl的加入使DTBP的活化能有增加的趋势,而铁和橡胶则在一定程度上降低了活化能,结合自加速分解温度(SADT)值进一步证明,水、混合酸、NaOH、NaCl对DTBP的稳定性没有影响,铁和橡胶对DTBP热稳定性影响最大。
In order to investigate the influence of impurities on the thermal stability of DTBP, a C600 flux calorimeter was used to evaluate the thermal decomposition behavior of DTBP and its mixtures with impurities. The exothermic initiative temperature values and decomposition heat values of DTBP were determined at different heat- ing rates and the mixtures with impurities were determined at 0.SK＇min-1 heating rate, and the thermal decomposi- tion parameters was calculated. The activation energy values of mixtures of DTBP with water, mixed acids, sodium hydroxide, sodium chloride, iron and rubber were obtained on the basis of the Arrhenius Law and the theory of chemical reaction. The result showed that activation energy values increased with water, mixed acids, sodium hy- droxide, sodium chloride, but reduced with iron and rubber, which means that water, mixed acids, sodium hydroxide, sodium chloride had no effect on the thermal stability of DTBP, and iron and rubber had great influence on the thermal stability of DTBP. The self-accelerating decomposition temperature（SADT） further proved the same result.
出处
《化学工程师》
CAS
2015年第1期53-56,共4页
Chemical Engineer
基金
<"十二五"国家科技支撑计划课题No.2012BAK13B02
典型高危工艺本质安全保障技术与工程示范>资助
关键词
二叔丁基过氧化物(DTBP)
热稳定性
反应动力学
SADT
杂质
di-tert-butyl peroxide （DTBP）
thermal stability
reaction kinetics
self-accelerating decomposi- tion temperature （SADT）
impurity.
