Graphene-containing waterborne polyurethane composite conductive coating prepared in situ and preparation method thereof

The invention relates to a graphene-containing waterborne polyurethane composite conductive coating prepared in situ and a preparation method thereof. Graphene has more superior electrical conductivity and mechanical property than the conventional carbon-series conductive fillers (carbon black, graphite, carbon nanotubes, carbon fibers and the like). The method comprises the following steps: performing amination modification on oxidized graphene by using diamine; recovering the conjugate conducting system of the graphene by means of chemical reduction; performing in-situ polymerization on -NH2 or -NCO-terminated waterborne polyurethane on the surface of the graphene to obtain the graphene-containing waterborne polyurethane composite conductive coating. The conductive coating can be applied to the surfaces of high polymer materials, metal materials and textile materials, has the characteristics of radiation resistance, anti-static property, corrosion resistance and wear resistance, and has a wide application v