Non-toxic anti-pollution paint for sea and method for preparing same

Abstract

Nontoxic marine anti-fouling dope and a preparation method thereof are disclosed, belonging to technical fields of anti-fouling dope and underwater dope. The nontoxic marine anti-fouling dope contains film forming matter, nontoxic antifouling compound, dye, addition agent and water. The nontoxic antifouling compound is pre-dispersed slurry prepared by adding super-fine tourmaline powder and nano zinc oxide powder into 10 times amount of water, coating with sodium alkylbenzene sulfonate while heating and stirring. The nontoxic marine anti-fouling dope can be prepared through the steps of adding the nontoxic antifouling compound into ethanol aqueous solution, adjusting pH value to be 9-12, adding silicon ester ethanol solution to react for 2-4h, bathing in water and separating, and drying. The tourmaline of the nontoxic anti-fouling dope automatically develops an electric field on the surface of the dope in the seawater to enable the seawater to electrolyse to produce hypochlorite ions, which can prevent halobios to adhere or grow on the boat and the structure. The ion membrane is approximately 10 microns and causes no environment pollution. The nontoxic marine anti-fouling dope is mainly suitable for underwater fouling prevention.

Description

technical field [0001] The invention belongs to the technical field of antifouling paint and underwater paint. Background technique [0002] The fouling problem of marine organisms has always restricted people's development and utilization of marine resources. The attachment of various marine organisms will increase the ship's navigation resistance and fuel consumption. The metabolites of marine organisms will corrode the ship and increase the ship's life. Maintenance costs will reduce the voyage rate of ships, and marine organisms will also block various pipelines, valves and meshes of culture cages on the seabed, causing economic losses that are difficult to estimate. In order to achieve the prevention and control of marine organisms, anti-fouling coatings are the only widely used and economical and efficient way to solve the problem of fouling. However, many antifouling coatings currently used contain releasable antifouling agents (such as organotin and cuprous oxide), w...

AI Technical Summary

Problems solved by technology

[0002] The fouling problem of marine organisms has always restricted people's development and utilization of marine resources. The attachment of various marine organisms will increase the ship's navigation resistance and fuel consumption. The metabolites of marine organisms will corrode the ship and increase the ship's life. Maintenance costs will reduce the voyage rate of ships, and marine organisms will also block various pipelines, valves and meshes of breeding cages on the seabed, causing economic losses that are difficult to estimate

[0005] So far, there have been no domestic and foreign patent reports on the preparation of composite non-toxic antifouling agents by combining tourmaline and nano-zinc oxide, preparing coatings and using them for marine antifouling purposes.