▎ 摘　　要

NOVELTY - Preparing flexible conductive film comprises (i) filling the copper-containing raw materials into the powder warehouse, (ii) placing the mixed gas containing reducing gas, inert gas and carbon source gas into the gas warehouse, and (iii) turning on the laser, allowing the copper-containing raw materials to enter the molding chamber under the driving of the mixed gas under the irradiation of the laser, allowing the copper-containing raw material to react with the reducing gas of the mixed gas to generate copper element, and allowing the produced copper element to induce the carbon source in the mixed gas under laser conditions to generate conductive particles in which the graphene film wraps the copper. USE - The method is useful for preparing flexible conductive film. ADVANTAGE - The film is uniform in conductivity and reduces gas in the laser state to react, generates copper simple substance, and generates the copper simple substance under the laser condition inducing the carbon source in the mixed gas generating graphene film coated copper conductive particles. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing conductive circuit board, comprising (o) uniformly coating the ultraviolet-polymerizable monomer or polymer solution on the transparent film to form a layer of liquid film; (p) printing the graphic on an organic polymer film or metal sheet, using a laser to etch and remove according to the size of the graphic to form a transparent graphic, fixing the graphic mask on top of the substrate coated with the liquid film; (q) filling the copper-containing raw material into the powder warehouse; (r) placing the mixed gas containing reducing gas, inert gas and carbon source gas into the gas warehouse; and (s) turning on the laser, allowing the copper-containing raw material to react with the reducing gas of the mixed gas to generate copper element, and allowing the produced copper element to induce the carbon source in the mixed gas under laser conditions to generate conductive particles in which the graphene film wraps the copper, and spraying on the transparent film under the driving of the air flow to obtain a conductive film.