2results about How to "Avoid re-stacking" patented technology

The invention belongs to the technical field of coatings, and particularly relates to a coating for a galvanized plate and a preparation method thereof. According to the invention, molybdenum disulfide is modified by using graphene oxide and carbon nanotubes. Compared with an inert structure of a molybdenum disulfide nanosheet, a graphene oxide sheet layer contains a large number of oxygen-containing functional groups, and dispersion of the molybdenum disulfide nanosheet in the waterborne polyurethane coating can be effectively improved by modifying the molybdenum disulfide nanosheet through graphene oxide. The one-dimensional-structure carbon nanotubes added in the grafting reaction process of the graphene oxide and the modified molybdenum disulfide nanosheets can effectively prevent agglomeration of the nanosheet layers in the reaction process, so that uniform modification of the molybdenum disulfide nanosheets is ensured; and moreover, the carbon nanotubes have relatively high specific strength and specific modulus, and the added carbon nanotubes can form an interactive network with the graphene oxide and the molybdenum disulfide nanosheets, so that the mechanical property and the corrosion resistance of the waterborne polyurethane coating are greatly improved.

The present application belongs to the technical field of paint, and particularly relates to a kind of paint for galvanized sheet and its preparation method.The present application uses graphene oxide, carbon nanotube to modify molybdenum disulfide.Compared with the inert structure of molybdenum disulfide nanosheet, graphene oxide sheet layer contains a large number of oxygen-containing functional groups, and the modification of molybdenum disulfide nanosheet by graphene oxide can effectively improve the dispersion of molybdenum disulfide nanosheet in water-based polyurethane paint.In the process of grafting reaction between graphene oxide and modified molybdenum disulfide nanosheet, the addition of one-dimensional structure carbon nanotube can effectively prevent the aggregation of nanosheet layer during the reaction process, thereby ensuring the uniform modification of molybdenum disulfide nanosheet;and, carbon nanotube has high specific strength and specific modulus, its addition can form an interactive network with graphene oxide and molybdenum disulfide nanosheet, greatly improving the mechanical properties and corrosion resistance of water-based polyurethane coating.