连续式平板刮膜机的制备及应用研究  

Study on the manufacture and application of continuous flat membrane casting equipment

作　　者：余常友 王建明[2] 宋宏臣[2] 杜如虚[2] 胡小芳[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广州510641 [2]广州中国科学院先进技术研究所,广东省膜材料与膜分离重点实验室,广州511458

出　　处：《膜科学与技术》2014年第5期102-108,共7页Membrane Science and Technology

基　　金：国家自然科学基金项目(21307146)

摘　　要：应用非溶剂致相法,通过自主设计研发的平板刮膜机制备聚偏氟乙烯(PVDF)成品膜.为提高PVDF超滤膜的综合性能,以聚乙二醇(PEG)为成孔剂,以二氧化钛(TiO2)为添加剂,系统研究了PVDF固含量、成孔剂种类和含量以及TiO2纳米颗粒对PVDF超滤膜的微观形态以及通量和截留率的影响.结果表明,当PVDF固含量(质量分数)为22%,PEG-6000质量分数为17.5%,并且添加质量分数0.5%TiO2所制备的成品膜具有较高的综合性能,其纯水通量可达1 030L/(m2·h·0.1MPa),对胃蛋白酶的截留率可达76%.With Non-solvent induced phase method,poly（vinylidene fluoride）（PVDF）membranes were made by self-designed Flat Membrane Casting Equipment.In order to improve the comprehensive performance of the PVDF ultrafiltration membranes,this research used polyethylene glycol and titanium dioxide nanoparticles as additives,and studied the microstructure morphology,flux and pepsin resistance of PVDF ultrafiltration membranes with different doses of PVDF,PEG and TiO2 as the modifier.According to the results,the excellent membrane can be get with mass fraction 22% PVDF,17.5% PEG-6000 and 0.5% TiO2 nanoparticles as additives,which water flux and pepsin resistance have reached1 030L/（m^2·h·0.1MPa）and 76.0%,respectively.

关 键 词：平板刮膜机 聚偏氟乙烯 高性能 超滤膜 

分 类 号：TQ051.893[化学工程]