▎ 摘　　要

NOVELTY - Method for preparing graphene oxide-carbon nanotube mixed solution, involves dispersing graphene oxide in deionized water to obtain yellow transparent liquid, adding carbon nanotubes to aqueous solution of graphene oxide, and ultrasonically treating to obtain mixed solution with black gray and excellent dispersibility. USE - The graphene oxide-carbon nanotube mixed solution used for preparing hydrophobic polyurethane anticorrosive coating enhanced by graphene oxide-carbon nanotube synergy, and for preparing polyurethane coating reinforced by graphene oxide-carbon nanotubes and graphene oxide-carbon nanotube co-enhanced hydrophobic polyurethane anticorrosive coating (all claimed) used in navigation, architecture and other industries application. ADVANTAGE - The method does not need to carry out functional modification on carbon nanotubes, ensures hydrophilic polyurethane coating with strong hydrophobicity, and improves the barrier property and mechanical property of polyurethane coating, and the hydrophobic polyurethane coating has excellent corrosion resistance (hydrophobic corrosion and isolation corrosion resistance). DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a polyurethane coating reinforced by graphene oxide-carbon nanotubes, involving using water-based polyurethane coating comprising graphene oxide, carbon nanotubes and water-based polyurethane emulsion; (2) a method for preparing graphene oxide-carbon nanotube co-enhanced polyurethane coating, involving (a) preparing graphene oxide-carbon nanotube collaborative enhancement phase, and (b) uniformly stirring and mixing graphene oxide-carbon nanotube collaborative enhancement phase and aqueous polyurethane emulsion to obtain polyurethane coating; and (3) a method for preparing graphene oxide-carbon nanotube co-enhanced hydrophobic polyurethane anticorrosive coating, involving (a) preparing graphene oxide-carbon nanotube collaborative enhancement phase, (b) uniformly stirring and mixing graphene oxide-carbon nanotube collaborative enhancement phase and aqueous polyurethane emulsion to obtain polyurethane coating, performing coating obtained polyurethane coating on substrate, and forming uncured polyurethane coating film on substrate, (c) molding uncured polyurethane coating film using template with surface-like micro-nano structure on surface, and curing polyurethane coating film during molding process, and stripping the template to obtain graphene oxide-carbon nanotubes synergistic enhanced hydrophobic polyurethane anticorrosive coating.