An organic fluorocarbon resin composite coating with antifouling and sterilization properties under visible light and its preparation method

Abstract

The invention discloses an organic fluorocarbon resin composite coating having antifouling and sterilization performance under visible light and a preparation method of the organic fluorocarbon resin composite coating. The coating is prepared from components in percentage by weight as follows: 1%-5% of nano titanium oxide, 0.01%-0.35% of graphite-phase carbon nitride, 0.3%-1.5% of polyvinylpyrrolidone, 60%-75% of organic fluorocarbon resin, 10%-15% of a dispersant and 10%-20% of a curing agent. According to the organic fluorocarbon resin composite coating having the antifouling and sterilization performance under the visible light, nano TiO2 modified by graphite-phase carbon nitride has high adsorption, high photocatalytic oxidation activity and good photocatalytic activity and can well perform the antibacterial property; graphite-phase carbon nitride belongs to a polymer semiconductor, so that nano TiO2 has good dispersity in an organic coating, the organic fluorocarbon resin composite coating has a better inhibition function on attachment of marine organisms than ordinary fluorocarbon resin coatings and has a higher antifouling property, and a preparation process is simple.

Description

technical field [0001] The invention relates to a composite coating and a preparation method thereof, in particular to an organic fluorocarbon resin composite coating with antifouling and sterilization properties under visible light and a preparation method thereof. Background technique [0002] At the beginning of the 20th century, ship bottom antifouling coatings have been successfully applied to ship antifouling. It has gone through the use of poisonous materials such as mercury, arsenic, and cuprous oxide as antifouling agents, and then the application of organotin compounds in antifouling paints. The problem of marine pollution caused by this is also becoming more and more prominent. In the historical process of developing and utilizing the ocean, with the progress of society and the improvement of human awareness, the call for environmental protection is getting higher and higher. The research and development of non-toxic, non-polluting, and special-function coatings h...

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Problems solved by technology

However, nano-TiO 2 Due to its wide band gap, photocatalysis can only occur under the irradiation of short-wavelength ultraviolet light, but the proportion of ultraviolet light in natural light is small, making TiO 2 The solar energy utilization rate of photocatalysts is low, and the antibacterial properties cannot be fully exerted. At the same time, due to the nanoscale size of nano-titanium dioxide, it is easy to agglomerate and affect its dispersion in the solution.

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