Marine antifouling paint with low surface energy and preparation method thereof

Abstract

The invention relates to a marine antifouling paint with low surface energy and a preparation method thereof. The marine antifouling paint is prepared according to the following steps and process parameters: (1) dissolving polytetrafluoroethylene into dimethylbenzene to prepare solution A; (2) dispersing nano SiO2, 800-mesh TiO2 and dispersing agents into dimethylbenzene uniformly to prepare dispersion solution B; and (3) adding the solution A and the solution B into a diluent and then into fluorocarbon resin, adding a liquid paraffin, hydrophobic additive, defoamer, polyethylene glycol octyl phenyl ether and leveling agent, mixing well, dispersing uniformly through a sand mill, adding poly isocyanurate ester hardener, stirring, and coating the paint with the hardener into a film. The toxicity of the traditional cuprous marine antifouling paint can be reduced, the cost of the traditional coating with high fluoride content can be decreased, the design is environmentally friendly, and the cost of the marine antifouling paint is low.

Description

technical field [0001] The invention relates to an anti-corrosion coating, in particular to a preparation method of a surface-energy marine anti-fouling coating. Background technique [0002] my country's coastline is long, and the ocean environment is complex from south to north. A large number of ships sail in the harsh ocean environment. The bottom part of the ship has been soaked in seawater for a long time, and it is seriously polluted by marine organisms. When marine organisms attach to the bottom of a ship, a series of complex physical and chemical changes will occur with the growth of these fouling organisms, which will greatly accelerate the corrosion of the bottom steel plate and reduce the service life of weapons and equipment; at the same time, fouling organisms will increase the The weight of the ship and the resistance of navigation will increase fuel consumption and seriously affect the combat performance of the ship. In ship antifouling technology, antifouli...

AI Technical Summary

Problems solved by technology

At present, marine low surface energy antifouling coatings are mainly silicone series and fluoride series. The antifouling effect of the resin itself is enhanced through polymer graft modification and other processes. In this way, the antifouling performance of antifouling coatings mainly depends on Due to the resin itself, the process is complicated and the cost is high

Moreover, the resin synthesis process is accompanied by a large amount of waste gas and waste liquid removal, which is not conducive to environmental protection.