▎ 摘　　要

NOVELTY - Composite nano-fiber filter screen, comprises a base layer compounded together, an intermediate layer and a surface layer, where the base layer is a polyethylene terephthalate (PET) base material, the middle layer is a graphene conductive layer, and the surface layer is a electret nano-fiber layer. USE - Used as composite nano-fiber filter screen. ADVANTAGE - The preparation of the nano fiber is added with electret; the particulate matter fiber is not only the pure mechanical intercepting effect, but also electrostatic adsorption effect; under the same filtering efficiency, it not only can reduce the pressure drop, but also can reduce the dosage of the nano fiber. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation of composite nano fiber filter screen comprising using aqueous adhesive and e film-forming polymer, organic solvent, and electret particles which is added in solution comprising dispersant. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of layered structure diagram of the composite nano-fiber filter screen.