▎ 摘　　要

NOVELTY - The preparation method of carbon nanotube composite graphene anti-corrosion coating involves fully dispersing carbon nanotubes, graphene and solvent into composite slurry, where the carbon nanotubes have solid content of 0.5-50%, and the graphene has solid content of 0.1-30%, continuously adding resin, solvent, defoaming agent, leveling agent, coupling agent, anti-settling agent, wetting agent and filler to composite slurry, and uniformly dispersing to obtain product. USE - The method is useful for preparing carbon nanotube composite graphene anti-corrosion coating, which is useful in petrochemical pipelines and storage tanks, offshore equipment and platforms, naval ship, chemical equipment, highway bridge and power plant flue. ADVANTAGE - The method is useful for preparing carbon nanotube composite graphene anti-corrosion coating with improved comprehensive performance. DETAILED DESCRIPTION - The preparation method of carbon nanotube composite graphene anti-corrosion coating involves fully dispersing carbon nanotubes, graphene and solvent into composite slurry, where the carbon nanotubes have solid content of 0.5-50%, and the graphene has solid content of 0.1-30%, continuously adding resin, solvent, defoaming agent, leveling agent, coupling agent, anti-settling agent, wetting agent and filler to composite slurry, and uniformly dispersing to obtain product; or fully dispersing carbon nanotubes, graphene and solvent into composite slurry, continuously adding resin, solvent, defoaming agent, leveling agent, coupling agent, anti-settling agent, wetting agent and filler to composite slurry, uniformly dispersing to obtain carbon nanotube composite graphene anti-corrosion slurry component (A), mixing curing agent, resin, solvent and defoaming agent, adding leveling agent, coupling agent, anti-settling agent, wetting agent and filler to mixed mixture, uniformly dispersing to obtain carbon nanotube composite graphene anti-corrosion slurry component (B), and sufficiently and uniformly mixing the components (A) and (B) to obtain product. The preparation method of carbon nanotube involves: (1) enabling catalytic element of carbon nanotubes to form nano-state distribution on the surface of medical stone to obtain catalyst precursor; (2) calcining the catalyst precursor obtained in step (1) to obtain a catalyst for the production of carbon nanotubes; and (3) placing the catalyst prepared in step (2) in high-temperature apparatus, introducing a mixed gas, an inert gas and a reducing gas to apparatus, controlling the temperature of mixed gas at 500-1200 degrees C to prepare crude carbon nanotubes, separating and purifying the crude carbon nanotubes to obtain carbon nanotubes.