聚甲醛合成及热稳定改性研究进展

Research Progress on Synthesis and Thermal Stability Modification of Polyoxymethylene

回顾了聚甲醛(POM)热分解机理、热降解动力学方面的研究历史,介绍了POM热稳定性改性方面的研究现状。然后从引发体系、共聚单体以及后处理工艺等方面详细综述了热稳定性POM的合成研究进展,引发体系包括路易斯酸、质子酸、杂多酸及其它引发体系,共聚单体包括环氧乙烷、二氧戊环、二氧庚环及其它共聚单体,后处理法包括非均相碱液处理法、均相碱液处理法、熔融法。最后介绍了国内外POM的生产现状。

The research history of the thermal decomposition mechanism and kinetics of polyoxymethylene(POM)were reviewed,and the recent research progress of thermal stability modification of POM was introduced.The latest research updates on the synthesis of thermally stable POM were reviewed in detail,which involved initiation systems,comonomers,and post-treatment methods.The initiation systems included Lewis acid system,proton acid system,heteropoly acid system and other initiation systems.The comonomers included ethylene oxide,dioxolane,dioxoheptane,etc.The post-treatment methods included heterogeneous alkali solution treatment,homogeneous lye solution treatment and melting treatment.Finally,the worldwide production status of POM was introduced.