Silicate-modified polyetheramine polyurethane antifouling coating and application thereof

Abstract

The invention provides a silicate-modified polyetheramine polyurethane antifouling coating. The coating mainly comprises an A component and a B component; the A component comprises the following materials: 5%-45% of a water-soluble polyetheramine, 10%-50% of a silicon-containing compound, 45%-85% of a pigment, and the balance of water, and the A component is dispersed at a high speed of 1500 rpm to 5000 rpm for 30-200 min and is subjected to sanding to fineness of 2-45 [mu]m; and the B component comprises the following materials: 5%-75% of isocyanate and 25%-95% of a calcined oxide, and the Bcomponent is dispersed at a high speed of 1500 rpm to 5000 rpm for 30-200 min and is subjected to sanding to a fineness of 2-45 [mu]m. According to the silicate-modified polyetheramine polyurethane antifouling coating provided by the invention, alkalinity of the soluble silicate antifouling coating is utilized to create a stable and long-lasting alkaline environment to prevent adhesion of marine fouling organisms, so that the antifouling performance is realized.

Description

technical field [0001] The invention belongs to the technical field of marine antifouling, and in particular relates to a polyetheramine polyurethane antifouling coating modified by silicate and its application. Background technique [0002] Marine biofouling is ubiquitous in the marine environment and is one of the most important issues facing the shipping industry. According to research, there are as many as 2,000 kinds of common marine fouling organisms, the most common being algae, hydra, barnacles, oysters, etc. The adhesion of marine organisms will lead to an increase in the weight of the hull and sailing friction, and an increase in power and fuel consumption. hinder the development of marine economy. According to statistics, the fuel consumption caused by marine fouling can increase by up to 40%, while the total cost of the voyage can increase by up to 77%. Organotin (TBT) has been widely used since the 1970s. However, organotin can disrupt the endocrine of mollusc...

AI Technical Summary

Problems solved by technology

According to research, there are as many as 2,000 kinds of common marine fouling organisms, the most common being algae, hydra, barnacles, oysters, etc. The adhesion of marine organisms will lead to an increase in the weight of the hull and sailing friction, and an increase in power and fuel consumption. hinder the development of the marine economy

According to statistics, the fuel consumption caused by marine fouling can increase by up to 40%, and the total cost of the voyage can increase by up to 77%.

Organotin (TBT) has been widely used since the 1970s. However, organotin can disrupt the endocrine of molluscs and induce sexual distortion, resulting in population degradation and a sharp decline in the number, causing huge disasters to the marine ecological environment, and may enter the food chain. , causing harm to human life, the International Maritime Convention Organization (IMO) stipulates that the use of organotin antifouling paints will be completely banned from 2008

[0004] The existing antifouling coatings are mainly composed of antifouling agents and hydrolyzable resins, with outstanding shortcomings: 1. No anti-corrosion performance, and need to be coated with solvent-based anti-corrosion primers; 2. Add various antifouling agents, There is a certain degree of pollution to the environment. In severe cases, it will also disturb the endocrine of molluscs, induce sexual distortion, cause population degradation and sharp decline in numbers, cause huge disasters to the marine ecological environment, and may enter the food chain, affecting human life. Safety hazards; 3. The use time is short, generally no more than 5 years

[0005] The other existing marine silicate antifouling has problems such as short antifouling time and insufficient physical strength of the coating.

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