Anticorrosion and antifouling coating for ships and preparation method thereof

Abstract

The invention discloses an anticorrosion and antifouling paint for ships. The anticorrosion and antifouling paint contains the following components in parts by weight: 20-40 parts of modified natural polysaccharide type high-water-absorption resin, 10-15 parts of water-soluble fluoride resin, 0.3-4 parts of emulsified paraffin, 1-3 parts of phospholipid emulsifiers, 6-12 parts of nanometer titanium dioxide, 4-8 parts of nanometer zinc oxide, 1-2 parts of organic bentonite, 0.8-2 parts of polyacrylate, 2-10 parts of ethyl acetate, and 1-5 parts of boron nitride powder. A preparation method of the paint comprises the following steps: emulsifying modified natural polysaccharide type high-water-absorption resin, water-soluble fluoride resin and emulsified paraffin together for 60-80 minutes; adding phospholipid emulsifiers to obtain a water-soluble emulsion for later use; then adding nanometer titanium dioxide, nanometer zinc oxide, organic bentonite, polyacrylate, ethyl acetate and boron nitride powder at one step; stirring for 10-15 minutes at the temperature of 95-100 DEG C; and filtering to obtain finished products. The anticorrosion and antifouling paint is nontoxic and environmental friendly, thereby causing no pollution to operators and environment.

Description

technical field [0001] The invention relates to a coating, in particular to an anti-corrosion and anti-fouling coating for marine vessels, and also relates to a preparation method of the coating. Background technique [0002] Marine corrosion refers to the corrosion of metal components in the marine environment. The marine environment is a complex corrosive environment. In this environment, seawater itself is a strong corrosive medium. At the same time, waves, waves, tides, and currents produce low-frequency reciprocating forces and impacts on metal components, and marine microorganisms, attached organisms, and their metabolites are all harmful to Corrosion processes produce direct or indirect accelerations. Marine corrosion is mainly localized corrosion, which occurs in a small area starting from the constructed surface. In addition, there are low-frequency corrosion fatigue, stress corrosion and microbial corrosion. Generally, the general corrosion rate of metal compon...

AI Technical Summary

Problems solved by technology

[0004] At present, the anti-corrosion and anti-fouling coatings used by ships have the following defects: 1) they cannot meet the requirements of preventing the adhesion of seawater, marine atmosphere and marine organisms; 2) the coating will release organic pollutants during construction, use and curing. solvents, which pose a serious threat to the environment and human health