Low-surface energy antifouling seagoing ship paint and its prepn

Abstract

The antifouling paint is prepared with core-shell type fluorous acrylate emulsion as base material, heavy CaCO3 stuffing, pigment, densifier, dispersant, glycol filming assistant, lubricant, leveling agent, preservative, defoaming agent, deionized water and ammonia water. Its preparation process includes semi-continuous polymerization to synthesize core-shell fluorous emulsion, mixing the emulsion with filming assistant, mixing with other components and filtering. The antifouling paint has low surface energy and indexes meeting the requirement for environment protection, and is soluble in common organic solvent.

Description

technical field [0001] The invention relates to an antifouling paint for marine ships and a preparation method thereof. Background technique [0002] Traditional organotin and organotin-cuprous oxide composite ship antifouling coatings still dominate the market due to their excellent antifouling performance, but they have a fatal shortcoming, that is, the antifouling agents contained in them, such as tributyl ( Tin methacrylate poses a great threat to the marine ecological environment. In recent years, from the perspective of protecting the environment, many countries have legislated to restrict its use. On the other hand, due to the lack of excellent alternative products, it has been unable to withdraw from the market. Tin-free self-polishing antifouling coating TF-SPC is currently favored as a substitute for organotin antifouling coatings. TF-SPC coatings are made of soluble or hydrolyzable materials, combined with low-toxic cuprous oxide antifouling agents. Under the ac...

AI Technical Summary

Problems solved by technology

[0004] Most of the antifouling paints currently used are solvent-based, and most of them use coal tar as the solvent. The main component of coal tar is aromatic compounds. Such antifouling paints emit a large amount of toxic gases into the atmosphere during the painting process. No matter it is a great threat to the health of the operator or the people around, it also forms a waste of resources. Relatively speaking, the synthesis of O / W emulsion coatings with the help of surfactants can overcome the above shortcomings