聚偏氟乙烯中空纤维膜的耐氧化性  

Resistance to oxidation of polyvinyldene fluoride hollow fiber membrane

作　　者：胡保安[1] 吕晓龙[1] 马世虎[1] 阚彬[1] 

机构地区：[1]天津工业大学教育部中空纤维膜材料与膜过程重点实验室,天津300160

出　　处：《纺织学报》2007年第1期5-9,共5页Journal of Textile Research

基　　金：863重大专项(2002AA601240);973计划(2003CB615700)

摘　　要：选用KMnO4作为氧化剂对聚偏氟乙烯(PVDF)中空纤维膜进行浸泡处理,通过改变氧化剂浓度、反应时间、反应温度和溶液酸度等条件,将通量、初始泡点压力、破裂压力、断裂强力和断裂伸长作为评价指标进行优化。结果表明:KMnO4的安全使用质量浓度应为1 000 mg/L,安全使用温度应为35℃,500 mg/L的盐酸量较为合适。Polyvinyldene-fluoride （PVDF） hollow fiber membrane was treated by impregnating it in KMnO4 solution which was selected as oxidizing agent. Treatment conditions were varied as a function of oxidant solution concentration, temperature and duration of treatment, and solution acidity and evaluation indexes such as flux, pressure of appearing bubbles, pressure of burst, tensile strength and breaking elongation were optimized. The results showed that for safe application, the concentration of KMnO4 solution is 1 000 mg/L, the temperature, 35 ℃, and the appropriate hydrochloric acid concentration, 500 mg/L.

关 键 词：聚偏氟乙烯 中空纤维膜 耐氧化性 

分 类 号：TS102.52[轻工技术与工程—纺织工程] TQ028.8[轻工技术与工程—纺织科学与工程]