▎ 摘　　要

NOVELTY - Preparing pollution-resistant micro-filtration membrane, comprises (a) attaching modification liquid to surface of base film by dip coating, spray coating, brush coating, spin coating, blade coating or dynamic filtration surface modification to modify base film in which modification liquid includes thermosetting resin containing low surface energy and first solvent, (ii) placing modified base film at 25-100 ℃, performing first solvent volatilization treatment, realizing self-crosslinking of thermosetting resin containing low surface energy on surface of membrane and inside the pores to obtain anti-pollution coating, and (iii) immersing microfiltration membrane obtained in step (ii) in second solvent, eluting unreacted thermosetting resin containing low surface energy, and then drying at room temperature to obtain final product. USE - The pollution-resistant micro-filtration membrane is useful in water and oil-permeable microfiltration process, membrane distillation, membrane absorption, pervaporation, supported liquid membrane, and liquid aeration (gas dispersion) (all claimed). ADVANTAGE - The pollution-resistant micro-filtration membrane realizes large-scale preparation of pollution-resistant microfiltration membranes. DETAILED DESCRIPTION - Preparing pollution-resistant micro-filtration membrane, comprises (a) attaching modification liquid to surface of base film by dip coating, spray coating, brush coating, spin coating, blade coating or dynamic filtration surface modification to modify base film in which modification liquid includes thermosetting resin containing low surface energy and first solvent, thermosetting resin containing low surface energy is fluorine-based, silicon-based or fluorosilicon-modified polyacrylate random copolymers, fluorine-based, silicon-based or fluorosilicon-modified epoxy resins, fluorine-based, silicon-based or fluorosilicon-modified chlorinated rubbers, fluorine-based, silicon-based or fluorosilicon-modified vinyl polymers, fluorine-based, silicon-based or fluorosilicon-modified amphiphilic block copolymers, (ii) placing modified base film at 25-100 ℃, performing first solvent volatilization treatment, realizing self-crosslinking of thermosetting resin containing low surface energy on surface of membrane and inside the pores to obtain anti-pollution coating, and (iii) immersing microfiltration membrane obtained in step (ii) in second solvent, eluting unreacted thermosetting resin containing low surface energy, and then drying at room temperature to obtain final product.