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Dynamic Simulation and Experimental Evaluation of EPDM Synthesis with Et(Ind)_2ZrCl_2/MAO Catalyst System

机译:Et(Ind)_2ZrCl_2 / MAO催化合成EPDM的动力学模拟和实验评价

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摘要

A mathematical model for the homogeneous terpolymerizaiton of ethylene-propylene-diene (EPDM) in a semibatch reactor reactor using Et(Ind)_2ZrCl_2/MAO as a catlayst system was developed and reported herein. In this study, we developed a kinetic model in order to explain the catalyst and EPDM properties such as catlayst activity, weight-average moelcualr weight, and terpolymer composition, which were experimentally and theoretically obtained. For this system, a lower E/P feed ratio leads to a lower molecualr weight and a broader initial moelcular weight distribution, while the increase in diene concentration leads toa decrease in the catlayst activity without broadening the MWD of the resulting polymers. The proposed model accounts for these experimental trends and for some data in the literature.
机译:建立并报道了使用Et(Ind)_2ZrCl_2 / MAO作为催化剂的半间歇式反应器中乙烯-丙烯-二烯(EPDM)的均相三元聚合反应的数学模型。在这项研究中,我们建立了动力学模型,以说明通过实验和理论获得的催化剂和EPDM性能,例如催化剂活性,重均分子量和三元共聚物组成。对于该系统,较低的E / P进料比导致较低的分子量和较宽的初始分子量分布,而二烯浓度的增加导致催化活性的降低而不会使所得聚合物的MWD变宽。提出的模型考虑了这些实验趋势以及文献中的一些数据。

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