膜科学与技术

SSP浓度对不锈钢中空纤维膜性能的影响

作者：忠琪丰，王明，许振良，马晓华

单位：化学工程联合国家重点实验室，上海市多相结构材料化学工程重点实验室，华东理工大学化学工程研究所膜科学与工程研发中心，上海200237

关键词：中空纤维；不锈钢膜；结构调控；机械性能

出版年,卷(期):页码： 2016,36(2):76-80

摘要：

以25μm 316L不锈钢粉(SSP)为原料，聚丙烯腈(PAN)为聚合物粘结剂，N,N-二甲基-乙酰胺(DMAc)为溶剂，聚乙烯吡咯烷酮(PVP)为增粘剂，制备了不锈钢中空纤维膜，讨论了SSP浓度对不锈钢中空纤维膜的烧结收缩、微观形貌、密度、孔隙率、最大孔径、平均孔径、纯水通量和机械强度的影响。采用泡点、纯水通量、机械强度等方法表征了中空纤维膜的性能。实验结果表明：当加入75 wt%的不锈钢粉时，不锈钢中空纤维膜具有较好的性能，其最大孔径为15.2 μm，平均孔径为4.16 μm，机械强度为49.4 MPa，纯水通量为35000 L?m-2?h-1?bar-1。

Stainless steel hollow fiber membranes were prepared by using 25μm 316L stainless steel powder (SSP) as raw material, polyacrylonitrile(PAN) as polymer binder, N,N-dimethylacetamide (DMAc) as solvent and poly (vinyl pyrrolidone) (PVP) as additive. This paper discussed that the SSP content effected on the properties of stainless steel hollow fiber membranes such as shrinkage, micro-structure, density, porosity, the maximum pore size, mean pore size, pure water flux and mechanical strength. The properties of stainless steel hollow fiber membranes were characterized by bubble point, pure water flux, mechanical strength and other test methods. The experimental results showed that when the SSP concentration was 75wt%, the stainless steel hollow fiber membranes had better property. The maximum pore size, mean pore size, mechanical strength and pure water flux of 75% stainless steel hollow fiber membranes were 15.2 μm, 4.16 μm, 49.4 MPa and 35000 L?m-2?h-1?bar-1 respectively.

作者简介：忠琪丰（1989—），男，上海人，硕士研究生，主要从无机膜制备的研究工作。通讯联系人：Email：xiaohuama@ecust.edu.cn

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