共混改性聚酰亚胺中空纤维膜的压缩空气除湿性能研究

Study on the Dehumidification of Dompressed Air of Hollow Fiber Membranes Spun with Blend Modified Polyimid

摘要: 采用干／湿相转换法制备了共混聚酰亚胺中空纤维膜，并对其与聚酢亚胺(PI)中空纤维膜的除湿性能进行了比较，结果表明：在不同压力、不同流量和不同吹扫比例的情况下，共混膜的除湿性能均优于PI膜，特别是增大吹扫比例时，共混膜的优越性更为明显，虽然在抽真空的条件下，共混膜的除湿性能不如采用吹扫操作方式的，但是，同PI膜相比脱湿性能仍然好于PI膜。

Abstract: Blend modified polyimide hollow fiber membranes were made by dry/wet phase inversion process and furthermore its dehydration performance was compared with pure polyimid membranes,the result shows that the dehydration properties of blending membranes were