Composite nanofiltration membrane as well as preparation method and application thereof

The invention discloses a composite nanofiltration membrane as well as a preparation method and an application thereof. The composite nanofiltration membrane comprises a supporting layer and a polyarylester layer, and the raw material of the supporting layer comprises a hydrophobic material. The composite nanofiltration membrane disclosed by the invention has excellent solvent resistance, relatively high permeation flux and relatively good separation performance. 本发明公开了一种复合纳滤膜及其制备方法和应用。该复合纳滤膜包括支撑层和聚芳酯层，其中，所述支撑层的原材料包括疏水性材料。本发明的复合纳滤膜具有优异的耐溶剂性，较高的渗透通量和较好的分离性能。