固体火箭技术2023，Vol.46Issue(6)：809-816,8.DOI:10.7673/j.issn.1006-2793.2023.06.002
模型辅助AN-HEA自由基共聚过程的调控:动力学、组成漂移及其抑制
Model-assisted regulation of AN-HEA copolymerization process:kinetics,composition drift and prevention
摘要
Abstract
With acrylonitrile(AN,M1)and hydroxyethyl acrylate(HEA,M2)as monomers,in the process of preparing neutral polymer bonding agent by means of the free radical random copolymerization,monomer content of copolymer generated at the early and late stage are different due to the different reaction activity of two monomers,which can cause composition drift phenomenon.In pres-ent study,the changes of free radical concentration,monomer conversion and instantaneous composition,copolymer instantaneous composition and average composition during a typical batch copolymerization of AN and HEA were investigated by kinetics model.In order to prevent composition drift,a semi-continuous copolymerization process should be used by continuously adding the higher reac-tion activity monomer—HEA,and the dosing rate of HEA can be available by model simulation.The methods and results of this study will provide an important reference for the preparation of various AN-HEA random copolymers with uniform monomer composition.关键词
中性聚合物键合剂/自由基共聚/动力学模型/组成漂移/间歇共聚/半连续共聚Key words
neutral polymer bonding agent/free radical copolymerization/batch copolymerization/kinetics model/composition drift/semi-continuous copolymerization分类
航空航天引用本文复制引用
李娓,王小波,胡笑晨,郑东升,黄志萍,姚俊..模型辅助AN-HEA自由基共聚过程的调控:动力学、组成漂移及其抑制[J].固体火箭技术,2023,46(6):809-816,8.基金项目
国家重点研发"大科学装置前沿研究"重点专项项目(2022YFA1604004). （2022YFA1604004）
