Preparation method of anti-cracking zinc acrylate antifouling paint

Abstract

The invention discloses a preparation method of an anti-cracking zinc acrylate antifouling paint. The preparation method comprises synthesis of a zinc acrylate small-molecular monomer, synthesis of a zinc acrylate polymer and preparation of zinc acrylate antifouling paint, wherein the zinc acrylate small-molecular monomer contains a first solvent, zinc oxide, a methacrylic acid monomer and monocarboxylic acid; the zinc acrylate polymer contains a second solvent, a zinc acrylate small-molecular monomer, a methacrylate monomer and an initiator; the zinc acrylate antifouling paint contains a zinc acrylate polymer solution, pigment filler, a third solvent, an antifouling agent and an auxiliary; the structural formula of the synthesized zinc acrylate polymer is shown in the specification; the long branch of isostearic acid in monocarboxylic acid has relatively good internal plasticization function so that the synthesized zinc acrylate polymer has relatively good flexibility; and the methacrylate monomer is of a aliphatic six-membered ring structure with a cyclohexyl structure, the damage of the antifouling paint caused by excessive internal stress can be avoided, and the anti-cracking performance of the antifouling paint is enhanced.

Description

technical field [0001] The invention belongs to the technical field of marine antifouling coatings, in particular to a preparation method of anti-cracking acrylic zinc antifouling coatings. Background technique [0002] In the underwater structure of seawater or freshwater, some marine organic matter is often attached to the hull. The adhesion of fouling organisms increases the frictional resistance of the ship and the weight of the hull, consumes a lot of fuel and reduces the speed of the ship, and seriously weakens the maneuverability of the ship and reduces the service life. . Therefore, to eliminate the adhesion of fouling organisms, antifouling coatings made of antifouling agents are economically and technically feasible and one of the most effective means. Antifouling coatings must not only have excellent antifouling properties, but also have good Physical and mechanical properties, especially crack resistance. [0003] Aiming at the problem of coating film cracking,...

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Problems solved by technology

[0003] Aiming at the problem of coating film cracking, patent CN1196755C uses abietic acid, hydrogenated abietic acid and its salts to adjust, patent JP11323208 adds chlorinated paraffin plasticizer to the metal-containing resin for combination optimization, and patent 1188475C uses fibers to prevent acrylic acid metal salts. The anti-cracking effect of the patent is not particularly obvious, especially at the waterline of the ship, in seawater exposure and sunlight exposure. The cyclic effect of the coating will produce significant mechanical stress and cause cracks and flakes. At the same time, the coating will absorb a certain degree of water and swell. As the coating dries, the coating film will become thinner again, and cracks will occur in severe cases. Affect the antifouling effect

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