Two-component propeller anti-fouling coating

Abstract

A two-component propeller antifouling paint, consisting of component A and component B, said component A consists of resin, copper antifouling agent, auxiliary antifouling agent, organic antifouling agent, diluent and thixotropic The composition of component B is composed of curing agent, and the mass fraction of each component in component A is: resin 20-75%, copper antifouling agent 5-60%, auxiliary antifouling agent 10-20%, organic High-efficiency antifouling agent 0-20%, diluent 1-12%, thixotropic agent 0.5-2%, curing agent 15-25% of the mass content of component A, resin, copper antifouling agent, auxiliary antifouling agent , organic antifouling agent, diluent and thixotropic agent constitute the first component of this coating, and adjust its viscosity by diluting with diluent to realize construction and curing under water. The coating in the present invention can be applied underwater, and the film-forming thickness at one time can reach more than 150 μm, and it is resistant to salt water for 6 months: the coating has no blistering, no shedding, and the propeller has no corrosion.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, in particular to a two-component propeller antifouling paint. Background technique [0002] At present, the materials used for ship propellers are mainly ferromanganese brass and stainless steel. The ferromanganese brass propeller itself can electrolyze copper ions and has a certain antifouling ability. With the formation of corrosion products, a shielding layer will be formed on the surface, making copper The number of ion precipitation decreases, resulting in a decrease in antifouling ability year by year. In addition, due to the anti-corrosion requirements of the propeller in actual use, a cathodic protection system is installed, resulting in the inability to precipitate copper ions in the ferromanganese-brass propeller, which makes it lose its antifouling ability; the stainless steel propeller itself has no antifouling ability. During the operation of the ship, under the action of...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problems that the paint used in the existing antifouling coating method still needs to be manually cleaned, the manual treatment is time-consuming and labor-intensive, and will generate a huge amount of docking fees, etc., to provide a two-component propeller antifouling coating. Fouling coatings, the coatings in this application use epoxy resin, barium petroleum sulfonate, etc. as base materials, and use cuprous oxide, zinc oxide and organic high-efficiency antifouling agents as compound antifouling agents, which play a role in the propeller when the voyage is stopped. Temporary anti-fouling effect to avoid the adhesion of fouling organisms; even if there is marine organisms attached, when the ship is sailing, the marine organisms will peel off with the coating under the action of the centrifugal force of the propeller and the erosion of water flow, so that the surface of the propeller will be kept clean and free from fouling Bio-adhesion ensures the sailing speed of the hull, saves fuel consumption for shipowners, and creates more economic benefits, so it has broad market application prospects

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