高聚物/陶瓷复合膜的制备及性能表征

PREPARATION AND CHARACTERIZATION OF POLYMER/CERAMIC COMPOSITE MEMBRANE

采用聚合 热解法修饰陶瓷基膜和浸涂法制备高聚物 /陶瓷复合膜 ,通过正交设计考察膜制备过程的各种影响因素 ,并制备出了完整无缺陷的硅橡胶 /陶瓷复合膜和PPESK/陶瓷复合膜 ,其O2 /N2 分离系数皆达到了纯高聚物膜的本征分离系数 .实验结果表明复合膜有良好的热稳定性 ,为在较高温度环境下的气体分离及膜反应等的应用准备了条件 .

Organic/inorganic composite membrane is a new research topic in the membrane technology.In this study,the method of polymerization pyrolysis was adopted to modify the substrate and dip coating was used to prepare polymer/ceramic composite membrane.The effects of various factors on the process of membrane preparation were studied by orthogonal design.The selectivities of oxygen to nitrogen in both silicone rubber/ceramic and PPESK/ceramic composite membranes prepared are tantamount to intrinsic selectivities of the corresponding pure polymers separately,showing that the defect free polymer/ceramic composite membranes were successfully synthesized.The composite membranes possess good thermostability,which could lead to commercialization in both gas separation and membrane reaction at a relatively higher temperature.