中华医学超声杂志

应用化学 ›› 1988, Vol. 0 ›› Issue (5): 48-52.

• 研究论文 • 上一篇    下一篇

聚氯乙烯超滤膜的溶剂蒸发速度影响研究

武冠英, 孙本惠, 郭林, 沈一兵, 吕素维, 戴卫国   

  1. 北京化工学院高分子材料研究所
  • 收稿日期:1987-10-04 修回日期:1988-03-31 出版日期:1988-10-10 发布日期:1988-10-10

INFLUENCES OF THE SOLVENT EVAPORATION RATE ON THE PREPARATION OF PVC UF MEMBRANE

Wu Guanying, Sun Benhui, Guo lin, Shen Yibing, L? Suwei, Dai Weiguo   

  1. Research Institute of Polymer Materials, Beijing Institute of Chemical Technology
  • Received:1987-10-04 Revised:1988-03-31 Published:1988-10-10 Online:1988-10-10

PDF

489

被引次数

33

摘要： 本文对 PVC 超滤膜的浇铸膜溶剂体系蒸发速度进行了研究,着重讨论了第二添加剂的种类和含量对蒸发速度的影响.结果表明,溶剂蒸发速度及蒸发时间都是影响 PVC 超滤膜结构与性能的重要因素,而第二添加剂又是影响溶剂蒸发速度的一个重要因素.

关键词: 聚氯乙烯, 超滤膜, 性能

Abstract: The effects of the secondary additives on the rate of solvent evaporation and the performance of PVC UF membrane were investigated.It is found that the sort and content of secondary additives can influence on both the value of evaporation rate constant b and the membrane performances.The greater the difference between secondary additive and solvent, and the higher the content of secondary additive,the more remarkable change in the value of b.In the conditions used,the maximum flux value appears at 5%(wt)of secondary additive in the casting solution.Moreover,the evaporation time also has an important influence on the formation of polymer network pores and polymer aggregate pores,along with their size and the size distribution.

Key words: Polyvinylchloride, Ultrafiltration membrane, Property

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