一类三元共聚反应的拟二元化处理方法和简单稳态假定下的三元共聚的可拟二元化特性  

Pseudo-Binary Treatment of a Class of Terpolymerization and the Property of Terpolymerization Based on Simple Steady State Assumption that It can be Treated by Pseudo-Binarization

作　　者：张国平 ZHANG Guo-ping(Zhejiang Juhua technical center Co.,Ltd,National Engineering Technology Research Center of Fluoro-material,Quzhou 324004,China)

机构地区：[1]浙江巨化技术中心有限公司,国家氟材料工程技术研究中心,衢州324004

出　　处：《高分子通报》2022年第2期42-47,共6页Polymer Bulletin

摘　　要：对一类两种主单体比例保持恒定,微量或少量第三单体参与的改性三元共聚体系,采用了将两种主单体视为一种单体,微(少)量第三单体与此"主单体"进行拟二元共聚的处理方式,分别用动力学概念推导法和从三元共聚简易组成式直接导出法,推得拟二元共聚等效竞聚率计算式,两种方法所得结果一致。对文献报道的一些三元共聚实例进行了计算,证实了本文方法的正确性。如此不仅简化了此类三元共聚组成的计算,并能指导第三单体的选择,便于建立反应器模型,预测第三单体含量变化、指导选择合理的添加方式。亦发现简单稳态假定下的三元共聚具有"可拟二元化"特性。For a class of modified terpolymerization system in which the ratio of two primary monomers is kept constant and a trace or small amount of third monomer is involved,the two primary monomers are looked upon as one monomer species,and then the system is treated as a pseudo-binary copolymerization of the"primary monomer"with the third monomer.By kinetic concept derivation method and direct derivation method from simple terpolymerization formula,the formulae for calculating the equivalent reactivity ratios of pseudo-binary copolymerization are derived respectively,and the results obtained by the two methods are consistent.Some terpolymerization examples reported in literature are calculated and the correctness of the proposed method is verified.In this way,not only the calculation of such terpolymerization composition is simplified,but also the selection of the third monomer can be guided,the reactor model can be established,the content change of the third monomer can be predicted,and the reasonable addition method can be guided.It is also found that the terpolymerization based on simple steady state assumption has the property that it can be treated by pseudo-binarization.

关 键 词：三元共聚 拟二元共聚 等效竞聚率 简单稳态假定 模拟 

分 类 号：TQ317[化学工程—高聚物工业]