▎ 摘　　要

NOVELTY - Modified graphene oxide/polysiloxane composite coating material comprises inorganic nano precursors, dispersion media, hydrophobic modifiers, non-essential hydrophobic inorganic nano-precursors, optional catalysts, non-essential modifiers. Chemical modification of graphene oxide is performed by in-situ chemical modification technology. The interaction between the inorganic nano-precursor and graphene oxide is one or more of van der Waals force, hydrogen bonding, electrostatic interaction, hydrophilic-hydrophobic balance, ionic bond, covalent bond and ion-covalent bond. Hydrophobic nanoparticles are grafted on the graphene oxide, and the hydrophobic nanoparticles are coated on the surface of the graphene oxide to form a modified graphene oxide having a multi-stage structure. USE - Modified graphene oxide/polysiloxane composite coating material for anti-corrosion treatment of various metal devices in marine engineering, transportation, energy industry, production equipment or municipal facilities to avoid device failure (claimed). ADVANTAGE - The modified graphene oxide/polysiloxane composite coating material enhances the binding force of modified graphene oxide and polysiloxane, improves the hydrophobicity and anti-corrosion performance of the coating to avoid corrosion failure of the substrate, preparation method has simple process flow, simple and easy to obtain raw materials, and strong practicability. DETAILED DESCRIPTION - The modified graphene oxide is mixed with a silane compound, a dispersion medium, a non-essential comonomer, and a promoter, forming a modified graphene oxide/polysiloxane composite resin in situ by hydrolysis condensation or hydrolysis condensation-radical polymerization. The modified graphene oxide/polysiloxane composite resin is blended with a non-essential solvent, a non-essential blending resin, a non-essential curing agent, a non-essential pigment filler, and a non-essential coating additive. The film is cured at a temperature of -30 to 300 degrees C to obtain a modified graphene oxide / polysiloxane composite coating material. The modified graphene oxide/polysiloxane composite resin accounts for 20 to 100%, and the non-essential solvent accounts for 0 to 80%, based on the total mass of the coating material. The non-essential blending resin accounts for 0-40%, the non-essential curing agent accounts for 0-30%, the non-essential pigment filler accounts for 0-50%, and the non-essential additives account for 0-10%. The total mass of the coating material is the sum of the quality of the modified graphene/polysiloxane composite resin, the non-essential solvent, the non-essential blending resin, the optional curing agent, the non-essential pigment filler, and the optional auxiliary. An INDEPENDENT CLAIM is included for a method for preparing a modified graphene oxide/polysiloxane composite coating material, which involves: (A) adding 1 pts. wt. graphene oxide, 0 to 2 pts. wt. optional modification additive to 50-1000 pts. wt. the dispersion medium, dispersing for 0.1-48 hours; (B) adding 0.1 to 100 pts. wt. inorganic nano-precursor, 0 to 100 pts. wt. non-essential hydrophobic inorganic nano-precursor, 0-100 pts. wt. optional catalyst to 50-1000 pts. wt. the dispersion medium, and dispersed for 0.1-48 hours; (C) adding product to the product, and the reaction is carried out at a temperature of 5 to 200 degrees C for 1 to 50 hours; (D) separating product, washing, adding 0.1 to 100 pts. wt. hydrophobic modifier, and reacting at a temperature of 0 to 200 degrees C for 0 to 50 hours; (E) separating product obtained and washing to obtain a hydrophobic nanoparticle-coated hydrophobic nanoparticle-modified graphene oxide coated with hydrophobic inorganic nanoparticles; (F) dispersing 1 pts. wt. modified graphene oxide in 50-1000 pts. wt. dispersion medium, and dispersing for 0.1 to 48 hours; (G) adding 10 to 500 pts. wt. silane compound, 0.05 to 20 pts. wt. promoter, and 0 to 500 pts. wt. optional comonomer to the product; (H) performing reaction at a temperature of 5 to 100 degrees C for 1 to 100 hours to obtain a modified graphene oxide/polysiloxane composite resin; (I) adding the non-essential pigment filler, non-essential coating additives to the non-essential solvent to mix, and the stirring is uniform under the condition of the rotation speed of 100-5000 rpm; (J) mixing the modified graphene oxide/polysiloxane composite resin with a non-essential blending resin, and uniformly stirring at a rotation speed of 100 to 1500 rpm; (K) adding the product obtained to the product, and stirring uniformly at a rotation speed of 100-1500 rpm; (L) adding a non-essential curing agent to the product, and stirring uniformly at a rotation speed of 100-1500 rpm; and (M) solidifying product at a temperature of -30 to 300 degrees C to obtain a modified graphene oxide/polysiloxane composite coating material.