▎ 摘　　要

NOVELTY - Composite net film comprises metal net base material modified with functional material. The functional material is at least one layer of super-hydrophilic-oleophobic material. The functional material comprises crosslinked material and non-crosslinked material. The non-crosslinked material is dispersed in crosslinked material. USE - The composite net film is used in oil-water separation and/or sewage treatment (claimed). ADVANTAGE - The pressure-resistant oil-water separation membrane material has excellent oil-water separation efficiency, high water permeability, excellent corrosion resistance, high penetration pressure and excellent wear resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of oil-water separation film comprising preprocessing metal net base material, and modifying with functional material.