添加纳米SiO_2的DMT与EG体系酯交换反应动力学的研究  

The esterinterchange dynamic study of DMT and EG system with nanometer SiO_2 particles

作　　者：李昭迪[1] 王锐[1] 张大省[1] 徐庆军[1] 

机构地区：[1]北京服装学院材料系,北京100029

出　　处：《聚酯工业》2003年第2期27-29,共3页Polyester Industry

摘　　要：通过假设、简化,建立了二级反应变温动力学模型,研究了添加剂(SiO2,偶联剂)及其加入量对DMT和EG酯交换反应动力学的影响。经曲线拟合,利用阿累尼乌斯方程计算出反应体系的活化能及频率因子。结果表明:反应体系的活化能及频率因子随添加剂的加入及其加入量的增加而升高。Secondorder reaction kinetic model under changing of temperature is founded through assuming and predigesting.The effects of additive SiO2,and its adding amount on DMT and EG ester interchange reaction dynamics are studied.By curve fitting,the action energy and frequency factor of the reaction system are calculated by Arrhenius equation.The results showed that the action energy and frequency factor increases with the adding of nanometer SiO2 and the increasing of its adding amount.

关 键 词：纳米Si02 DMT/EG体系 酯交换 反应动力学 研究 

分 类 号：O621.25[理学—有机化学]