Abstract: A self-healing coating composition for use on metals includes a polyurea, an epoxy ester unsaturated resin, a combination of amine terminated siloxane and epoxy terminated siloxane and an organoclay. The polyurea is a water-soluble, aromatic polyurea and likewise, the epoxy ester is a water-soluble, aromatic epoxy ester. The coating composition is formed in a non-volatile solvent, such as N-Methylpyrrolidone. It can be applied to a metal surface and cured at room temperature to form a coating that is resistant to corrosion. Further the coating self-heals in a manner similar to a chromate coating.

Abstract: A composite material including a dispersion of nano-graphene sheet particles in a polyimide matrix and a method making films of the composite material are provided. The method includes forming a solution of nano-graphene sheet particles and poly(amic acid), casting the solution on a substrate to form a film, and imidizing the film. The films of the composite materials are suitable for use in batteries, capacitors, fuel cell components, solar cell components, display screens, and the like.