PVDF中空纤维膜收缩率影响因素的研究  

Influencing Factor Study on Shrinkage Ratio of PVDF Hollow Fiber Membrane

作　　者：代哲振[1,2] 刘慧 吁苏云[1,2] 高林娜 张艳中[1,2] DAI Zhe-zhen;LIU Hui;YU Su-yun;GAO Lin-na;ZHANG Yan-zhong(Zhejiang Chemical Industry Research Institute Co.,Ltd.,Hangzhou,Zhejiang 310023,China;Sinochem Lantian Co.,Ltd.,Hangzhou,Zhejiang 310051,China)

机构地区：[1]浙江省化工研究院有限公司,浙江杭州310023 [2]中化蓝天集团有限公司,浙江杭州310051

出　　处：《浙江化工》2018年第11期16-19,共4页Zhejiang Chemical Industry

摘　　要：采用非溶剂致相分离(NIPS)法,以聚偏氟乙烯(PVDF)为制膜材料,以二甲基乙酰胺(DMAc)为溶剂,加入有机添加剂(PVP K30)制备了PVDF中空纤维膜。改变计量泵挤出转速、计量泵温度、绕丝辊转速、干程长度和凝固浴溶剂浓度等工艺条件,研究PVDF中空纤维膜收缩率的变化情况。结果表明:随着计量泵转速或绕丝辊转速的增大,膜丝收缩率增大;计量泵温度升高,膜丝收缩率减小;干程长度和凝固浴溶剂浓度对膜丝收缩率的影响没有呈现出规律性。PVDF hollow fiber membrane was prepared by non-solvent induced phase separation(NIPS)method with PVDF as membrane material and dimethylacetamide(DMAc)as solvent by adding organic additive(PVP K30).The shrinkage ratio of PVDF hollow fiber membrane was studied by changing the extrusion speed of metering pump,the temperature of metering pump,the rotating speed of winding roller,air gap length and the solvent concentration in coagulation bath.The results showed that the shrinkage ratio increased with the increase of extrusion speed of metering pump and rotating speed of winding roller respectively.As the temperature of metering pump increased,the shrinkage ratio decreased.The effects of air gap length and solvent concentration of coagulation bath on the shrinkage ratio showed no regularity.

关 键 词：PVDF 中空纤维膜 NIPS 收缩率 

分 类 号：TB383.2[一般工业技术—材料科学与工程]