Novel marine antifouling coating composition based on nano-microcapsule controlled release technology

Abstract

The invention relates to paint technology and aims to provide a novel marine antifouling paint composition based on nano-microcapsule controlled-release technology. The coating composition uses a nano-microcapsule controlled-release acrylic polymer with a nano-microcapsule structure, which is composed of an acrylic resin core and an acrylic resin shell wrapped outside it, as the main resin, and is used in conjunction with auxiliary resins, reinforcing agents, and antifouling materials. additives, pigments, additives, solvents and other auxiliary components, or do not use antifouling agents. The product of the present invention can achieve the purpose of stable sustained and controlled release through water absorption-rupture-dissolution-hydrolysis alternately; the use of acrylic acid microcapsule accelerator with low glass transition temperature promotes the formation of microcapsules and also improves the coating. Toughness and adhesion solve the disadvantage that the coating is easy to fall off during long-term use; the use of micro-nano glass fiber composites improves the comprehensive mechanical properties of the coating; the composition takes into account the process, cost and performance, and has high application value.

Description

technical field [0001] The invention relates to paint technology, in particular to a novel marine antifouling paint composition based on nano-microcapsule controlled-release technology. Background technique [0002] During the development of marine economy and shipping industry, the problem of marine biofouling continues to plague people. Marine biofouling will not only increase the resistance of ship navigation and fuel consumption, accelerate the corrosion and degradation of hull materials, but also destroy the ecological balance of waters. The British International Paint Company has made statistics on the increase of ship bottom fouling and fuel consumption: if the ship bottom is fouled by 5%, the fuel consumption will increase by 10%; if the ship bottom fouling is greater than 50%, the fuel consumption will increase by more than 40%. Since the "special effect weapon" organotin antifouling paint was completely banned on January 1, 2008, it has gradually formed an organic...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent ZL201610454744.X provides a biocidal acrylic resin and a marine antifouling coating composition prepared by using it. The coating has excellent self-polishing performance and antifouling performance, but the coating is prone to rust during long-term use. Area shedding

However, there are still problems in the use of antifouling agents such as low utilization efficiency and unstable release rate in the later stage, resulting in poor antifouling effect in the later stage. The reason is that the technical problem of controlled release cannot be fundamentally solved.

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