Copper-free environmentally friendly self-polishing marine antifouling coating

Abstract

A copper-free environmentally friendly self-polishing marine antifouling paint, which is composed of a base resin A with self-polishing properties, an organic antifouling agent B without any copper antifouling agent, pigments and fillers C, additives D, and solvent E. The matrix resin A is characterized in that the preparation process is divided into two steps, the first step: under the action of an initiator, acrylic acid or methacrylic acid is mixed with other metal-free ethylenically unsaturated monomers at a certain temperature a1 Carry out free radical copolymerization in a certain amount of solvent to prepare acrylic acid or methacrylic acid prepolymer, the second step: the prepolymer prepared by the first step and a saturated organic acid and zinc oxide or hydroxide The compound or zinc salt is refluxed and reacted at a certain temperature, and the reaction can be stopped until the obtained slip-out reaches the expected value, and the matrix resin A is obtained.

Description

technical field [0001] The invention relates to a copper-free environmental protection self-polishing marine antifouling coating. The antifouling coating has good self-polishing performance, does not contain any copper antifouling agent, can greatly reduce copper emissions, and save a large amount of heavy metal resources. It has no pollution to the marine environment and is of great significance in protecting the marine environment. Background technique [0002] Anti-fouling paint is a special marine paint that is applied to the bottom of the ship to prevent marine organisms from attaching and fouling, and to keep the bottom of the ship smooth and clean. Its purpose is to reduce ship navigation resistance, save fuel consumption and reduce CO 2 emissions, reduce the carbon footprint of ships, and slow down the global greenhouse effect. Therefore, the application of antifouling coatings is very consistent with the international policy guidelines for energy conservation and ...

AI Technical Summary

Problems solved by technology

However, in order to achieve a good antifouling effect, traditional antifouling coatings have added a large amount of organic tin, DDT, cuprous oxide and other substances harmful to the marine environment, causing serious harm to the marine environment.

For example, organotin will accumulate in fish and shellfish and cause genetic variation, and may enter the food chain; DDT is extremely difficult to degrade in the marine environment, and can accumulate in organisms and penetrate into all links in the food chain, causing genetic mutations; Cuprous oxide will accumulate in large quantities in the harbor, causing a large number of plankton and algae to die, seriously disrupting the ecological balance of the ocean

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