Rare earth compound epoxy zinc-rich paint for preventing microorganism attachment and preparation method thereof

Abstract

The invention provides a rare earth compound epoxy zinc-rich paint for preventing microorganism attachment and a preparation method thereof. The rare earth compound epoxy zinc-rich paint consists of a component A, a component B and rare earth chloride, wherein the component A comprises the following components in parts by weight: 20-32 parts of bisphenol A type epoxy resin, 10-35 parts of flaky zinc powder, 3-5 parts of auxiliary filler, 15-25 parts of first solvent and 1-3 parts of assistant; the component B comprises the following components in parts by weight: 10-15 parts of neutral polyamide curing agent and 10-20 parts of second solvent; and the weight percentage of rare earth chloride is 1-3 parts. The rare earth compound epoxy zinc-rich paint for preventing microorganism attachmenthas the advantages of better function for resisting SRB (Sulfate-Reducing Bacteria) and strong capability of preventing organism attachment and preventing corrosion.

Description

technical field [0001] The invention relates to a coating, in particular to an antibacterial and anti-biological adhesion anticorrosion coating. The invention also relates to a method for preparing the coating. Background technique [0002] The hull and metal equipment in the marine environment usually quickly form a layer of microbial film, which will attach various marine organisms on this basis, reducing the speed of the ship, increasing fuel consumption (up to 30%), and accelerating the corrosion of the hull . The phenomenon of material corrosion caused or promoted by the life activities of microorganisms is collectively referred to as microbial corrosion (MIC), and many serious corrosions are caused by microbial corrosion. Sulfate reducing bacteria (SRB) are the most important anaerobic bacteria in microbial corrosion, and they are commonly found in sludge and sewage environments such as ship bilges, seawater pipelines, and oil field pipelines. SRB can convert SO 4 ...

AI Technical Summary

Problems solved by technology

In the article "Development of Scale Zinc-based Epoxy Zinc-rich Heavy-duty Anti-corrosion Coatings" published by Jin Xiaohong, Zheng Tianshui, etc. in the first issue of "Surface Technology" in February 2005, the scale-like zinc-based epoxy zinc-rich primer was studied. However, it has not been modified with rare earth elements; in the article of Song Jiajin, Liu Changwei and others published in the fourth issue of "Thermosetting Resins" in July 2007, "Research on the Modification of Corrosion-resistant Epoxy Powder Coatings", When studying the modification of corrosion-resistant epoxy powder coatings, rare earths were used for modification. The rare earth phenolic modified epoxy involved in the research does not have antibacterial and antifouling effects, and the combination of scaly zinc and rare earths has not been considered. Improve anti-microbial corrosion and microbial adhesion performance