Carbon fibre for composite materials having improved conductivity

Carbon fiber for composite materials having improved conductivity Abstract: The invention relates to a carbon fiber with a conductive finish, consisting of carbon fiber filaments which have a metal coating, wherein the carbon fiber filaments have a finish on the metal coating based on at least one polymer binder and containing conductive nanoparticles, and wherein the concentration of the metal coating is 8 to 25 wt.% and the concentration of the carbon nanotubes is 0.1 to 1 wt.%, each relative to the weight of the carbon fiber provided with the metal coating and finish. The invention further relates to a method for producing fibers of this type as well as a fiber-reinforced composite material comprising carbon fibers consisting of carbon fiber filaments, wherein the carbon fiber filaments are coated with a metal, and a polymer-based matrix, wherein the percent by volume of the fibers in the composite material is 30 to 70 vol.% and the composite material additionally contains conductive nanoparticles which are dispersed at least partially in the matrix.