Aspen苯乙烯聚合过程转化率和PDI的分析  

The Analysis of Convertion,PDI of Polystyrene with Aspen

作　　者：顾凯[1] 许晓迪[1] 刘太奇[1] 

机构地区：[1]北京石油化工学院材料科学与工程系,北京102617

出　　处：《北京石油化工学院学报》2008年第1期49-53,共5页Journal of Beijing Institute of Petrochemical Technology

摘　　要：利用Aspen Tech Inc.的Polymer Plus软件建立了以过氧化特丁基TBP为引发剂,三釜温度分别为110℃,120℃和160℃的苯乙烯三釜连续本体常压聚合的反应过程模型,利用灵敏度分析方法对影响产品转化率和分子量分散度(PDI)的引发剂浓度、反应温度等因素进行了分析;得出了引发剂量的增加可以提高产品转化率同时使分子量分散度下降;链转移剂量的增加使产品转化率下降同时使分子量分散度上升;在首釜温度107℃出现MW的最大值;增加釜的体积可以同时提高转化率,降低分子量分散度。The stead process simulation models of bulk polystyrene system were developed by the polymer process simulation software, Polymer Plus of Aspen Tech Inc. The bulk styrene polymerization process in continuous three reactors was adopted. Tert-butyl peroxide （TBP） was used as an initiator. The temperatures of the three reactors were set to be 110 ℃, 120 ℃, and 160 ℃, respectively. The effect of changing of initiator, temperature etc on the conversion, Mw and polydispersity index （PDI） were discussed by the sensitivity analysis. The result shows that： the higher the concentration of initiator, the higher the conversion and the lower the PDI at the same time; the higher the flow rate of chain agent, the lower the conversion and the higher the PDI; at 107 ℃ of first reactor the value of Mw reaches the maximum.

关 键 词：POLYMER PLUS 苯乙烯 聚合 PDI 

分 类 号：TQ320[化学工程—合成树脂塑料工业]