A kind of single-component propeller peelable antifouling coating and preparation method thereof

Abstract

The invention discloses a peeling antifouling paint of a single-component propeller and relates to the field of the coating technology.The paint is prepared by the following raw materials, in quality percentage,15-65% of resin binder, 0-12% of thinner, 25-65% of copper antifouling agent,5-15% of zinc oxide, 0-10% of organic antifouling agent and 0.5-2% of thixotropicagent; and the resin binder is any one or more of barium petroleum sulfonate, butter,lanum, methylsilicone oil and hydroxyl silicone oil. The antifouling paint provided in the invention is obtained by mixing the above materials uniformly through a high-speed dispersing process. The antifouling paint can achieve temporary antifouling action on the propeller when the ship stops to avoid fouling bioattachment; if the bioattachment is available, marine organism can peel and fall along the coating under the effect of the centrifugal force and current scouring of the propeller when the ship sails; the propeller surface must keep clean without bioattachment;and the antifouling perid is above six months.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a single-component propeller peelable antifouling coating and a preparation method thereof. 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, but with the formation of corrosion products, a shielding layer will be formed on the surface , so that the precipitation of copper ions decreases, resulting in a decline 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 operat...

AI Technical Summary

Problems solved by technology

The marine biofouling of the propeller, especially the marine biofouling of hard shells, will increase the navigation resistance and fuel consumption of the ship, reduce the speed of the ship, and at the same time increase the surface roughness of the propeller, reduce the output efficiency of the propeller, and accelerate the speed of the propeller. Corrosion causes ships to frequently dock for maintenance due to propeller fouling, increasing maintenance costs and reducing sailing rates

[0003] At present, a variety of methods to prevent marine biofouling have been researched and developed at home and abroad, including antifouling coating method, electrolytic antifouling method, ultrasonic method, radiochemical method and manual cleaning method, but the current application range is wide and the process is mature and stable. The only methods are manual cleaning, anti-fouling coating and electrolytic anti-fouling. Other methods are in the laboratory research stage, and there is no relevant engineering application experience

The manual cleaning method requires the ship to go into the dock to clean the propeller, use tools to eradicate marine organisms and polish the surface of the propeller to completely remove the marine organisms. Anti-fouling on the inner wall of the pipeline. In recent years, corresponding propeller anti-fouling devices have also been developed. However, the propeller is in an open environment, and the concentration of sodium hypochlorite is difficult to meet the anti-fouling requirements. Owner's welcome

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