PDF全文下载：  201905006.pdf

文章编号： 16726987（2019）05004406； DOI： 10.16351/j.16726987.2019.05.006

张瑞金， 孙宁， 杨霞*

（青岛科技大学 计算机与化工研究所，山东 青岛 266042）

摘要： 基于Aspen Polymer Plus建立了熔融酯交换法聚碳酸酯聚合过程的机理模型，并分析了进料比（碳酸二苯酯与双酚A）、温度、停留时间及压力等参数对聚碳酸酯数均分子量影响，获得了数均分子量为14万左右的聚碳酸酯产品的最佳聚合工艺条件：预聚温度保持在190~195 ℃，缩聚温度保持在270~280 ℃；进料比保持在101~103；预聚压力005~007 MPa，缩聚阶段压力越低越有利于聚碳酸酯相对分子质量增长；预聚阶段停留时间保持在08 h，单个降膜蒸发器最佳停留时间保持在02~03 h。

关键词： 聚碳酸酯； 聚合； 反应动力学； 流程模拟

中图分类号： TQ 316.4文献标志码： A

引用格式： 张瑞金， 孙宁， 杨霞. 熔融酯交换法双酚A型聚碳酸酯反应工艺建模及分析\[J\]. 青岛科技大学学报（自然科学版）， 2019， 40（5）： 4449.

ZHANG Ruijin, SUN Ning，YANG Xia. Simulation and analysis for the polymerization process of the bisphenol A polycarbonate by melt transesterification\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2019, 40(5)： 4449.

Simulation and Analysis for the Polymerization Process of the

Bisphenol A Polycarbonate by Melt Transesterification

ZHANG Ruijin, SUN Ning， YANG Xia

(Computers and Chemical Research Institute, Qingdao University of Science and Technology, Qingdao 26042, China)

Abstract: Based on Aspen Polymer Plus, a mechanism model for the melt polymerization process of polycarbonate is established, and the effects of feed ratio（DPC and BPA）, temperature, residence time and pressure on the number average molecular weight of polycarbonate are analyzed. The optimum polymerization conditions for a polycarbonate product with a number average molecular weight of about 14 000 are obtained: The prepolymerization temperature is maintained at 190—195 ℃, the polycondensation temperature is maintained at 270—280 ℃; the feed ratio is maintained at 101—103;the prepolymerization pressure is maintained at 005—007 MPa, the lower pressure during the polycondensation phase is more conducive to the molecular weight of polycarbonate; the residence time in the prepolymerization stage is maintained at 08 h, the best residence time of a single falling film evaporator is maintained at 02—03 h.

Key words: polycarbonate; polymerization; reactionkinetics; process simulation

收稿日期：  20181025

基金项目： 山东省重点研发计划项目（2018GGX107004）.

作者简介： 张瑞金（1994—）,男，硕士研究生*通信联系人.