聚偏氟乙烯膜的改性及应用  

Modification and application of PVDF Membrane

作　　者：刘楠楠[1] 卢彦越[1] 廖安平[1] 

机构地区：[1]广西民族大学化学化工学院,广西高校化学与生物转化过程新技术重点实验室,南宁530006

出　　处：《化工新型材料》2016年第7期228-230,共3页New Chemical Materials

基　　金：国家自然科学基金(21566007);广西科技开发项目(桂科能1598025-17);广西民族大学重点项目(2012MDZD011);广西高校人才小高地:化学与生物转化过程技术创新团队(桂教人[2011]47号)

摘　　要：运用溶胶-凝胶法在标准聚偏氟乙烯(PVDF)膜上构筑了(二氧化钛)TiO_2膜,然后在硬脂酸-丙酮溶液中浸泡改性,结果制得的膜呈现良好的疏水性能,最后通过一系列实验确定了改性的最优方案。同时把改性后的膜运用到膜蒸馏装置中运行,得到了膜装置运行的最优条件为:料液(NaCl溶液)浓度为15g/L,料液温度为50℃、流量为5L/h。在此条件下进行膜蒸馏的脱盐实验,结果脱盐率达到90%以上。A new TiO2 membrane was fabricated through a sol-gel method on the standard PVDF membrane,followed by modifying with stearic acid acetone solution.The modified membrane exhibited good hydrophobic performance.A series of experiments were used to determine the optimal conditions of modified membrane.The membrane was applied to the membrane distillation device.The optimal condition about the experiment：the temperture of fluid（NaCl solution）was50℃,the flux rate was 5L/h and the flux concentration was 15g/L.After the desalination experiment of modified membrane at the optimal condition,the desalination rate can reach above 90%.

关 键 词：TIO2膜 溶胶-凝胶法 膜蒸馏 

分 类 号：TQ051.893[化学工程]