Preparation method and application of antifouling self-extinguishing waterborne polyurethane coating

Abstract

The application discloses a preparation method and application of an antifouling self-extinction water-based polyurethane coating, and utilizes a coordination addition reaction of a carbon-carbon double bond and a silicon-hydrogen bond to prepare an organic fluorosilicon modifier containing active functional groups, which is used as an antifouling modifier for covalent modification of polyurethane, and a self-extinction water-based polyurethane with antifouling function is prepared through reasonable molecular design. The antifouling self-extinction water-based polyurethane coating prepared through the method of the application effectively solves the technical problems of poor compatibility between a physical addition type antifouling additive and a water-based polyurethane matrix, poor migration resistance and poor durability of antifouling effect caused by the problems, and the synergistic effect between fluorine and silicon also enables the coating to achieve excellent antifouling performance under a small amount of fluorine, so that the cost can be effectively controlled.

Images