Self-polishing anti-fouling resin and preparation method thereof

Abstract

The invention discloses a self-polishing anti-fouling resin and a preparation method thereof. The self-polishing anti-fouling resin disclosed by the invention has better fluidity and adhesion and a definite self-polishing rate, and can be used as the main resin of self-polishing anti-fouling paint for ship bottoms. The preparation method of the self-polishing resin comprises the following steps: reacting unsaturated organic acid with basic divalent metal-ion complex salt, and then reacting with other acrylic monomers under the effect of an initiator to synthesize the self-polishing anti-fouling resin. Thus, the invention improves the disadvantage of low grafting ratio in the tin-free self-polishing resin synthesis, shortens the reaction time and makes the product more stable.

Description

technical field [0001] The invention belongs to the field of resin synthesis, and in particular relates to a self-polishing antifouling resin and a preparation method thereof. Background technique [0002] As we all know, there are a large number of marine organisms living in the ocean. When a ship sails in the ocean, the marine organisms will quickly adsorb on the surface of the hull, and grow and reproduce on it, which will cause the hull to be fouled by marine organisms. When the hull is eroded by seawater or fouled by marine organisms, the surface roughness of the hull increases, resulting in increased water flow resistance and friction, resulting in a significant decrease in the speed of the ship; the increase in the weight of the hull increases fuel consumption, and docking The frequency of maintenance also increases accordingly, and the fuel consumption increases. Some data show that when a 1mm thick mucous membrane is formed on the bottom of the ship, the friction c...

AI Technical Summary

Problems solved by technology

[0005] Today's mainstream method of synthesizing tin-free self-polishing antifouling resin is to first synthesize acrylic resin containing carboxyl groups, and then react with basic salt containing zinc (or copper). , consumes a lot of energy, and the grafting rate is difficult to reach 100%

There is another method, such as the Chinese patent CN201110048903.3, which first synthesizes small molecules with zinc or copper acrylate, and then polymerizes with other acrylic monomers free radicals. This method is relatively simple, low energy consumption, and strong controllability , but in the first step of synthesizing zinc or copper acrylate, it is difficult to ensure the formation of a single zinc or copper acrylate monomer, resulting in insufficient stability of the subsequent resin

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