Acrylate amide anti-fouling agent and preparation method thereof

Abstract

The invention belongs to the technical field of marine anti-fouling, and particularly relates to an acrylate amide anti-fouling agent and a preparation method thereof. The molecular structure of the acrylate amide anti-fouling agent is composed of a benzene ring, an acrylate group, an amido group and an alkyl chain R2, wherein the acrylate group and the amido group are connected to the benzene ring and are in an ortho-position relation, and the R2 group is located at the N position of an amino group and is connected with amide through a C-N bond. The preparation method of the acrylate amide anti-fouling agent comprises the following steps of: dropwise adding a dichloromethane solution in which acryloyl chloride is dissolved into a mixed system of dichloromethane in which an amide compound and triethylamine are dissolved under the condition of introducing nitrogen, reacting at normal temperature, washing, separating liquid, taking a lower-layer organic phase, adjusting the lower-layer organic phase to be neutral, drying, filtering, and carrying out rotary evaporation to obtain the acrylate amide anti-fouling agent. The acrylate amide anti-fouling agent with a modified structure is synthesized, is applied to a marine anti-fouling coating system, and can release anti-fouling components and prevent the growth of fouling organisms through ester group hydrolysis in a seawater environment.

Description

Technical field: [0001] The invention belongs to the technical field of marine antifouling, and specifically relates to an acrylic acid amide antifouling agent and a preparation method thereof. The molecular structure of the antifouling agent contains carbon-carbon double bonds, propylene groups, ester groups and amide groups, and is used in marine environments. Anti-biofouling on the surface of offshore facilities such as ships and offshore platforms. Background technique: [0002] Marine biofouling refers to the biofouling formed by the adsorption, growth and reproduction of marine microorganisms, plants and animals on the surface submerged in seawater, which causes great harm to marine engineering equipment such as ships, nuclear power plants and oil production platforms. For example: the hull becomes rough after being attached by marine organisms, and the sailing resistance and fuel consumption increase significantly. The most common solution to the problem of marine fo...

AI Technical Summary

Problems solved by technology

In the 1980s, antifouling coatings for ships generally contained toxic antifouling agents such as mercury, arsenic, and organotin, which were highly toxic and difficult to degrade, causing serious pollution to the marine environment and endangering the growth and reproduction of marine organisms.

[0004] The above-mentioned antifouling agents are either expensive, or only through physical mixing with the resin, the release rate of the antifouling agent is affected by the matrix resin and the degree of physical mixing, the release of the antifouling agent in seawater is unstable, and the antifouling cycle short

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