Marine heavy anti-corrosion epoxy nano coating rich in aluminium, manganese and rare earth and preparation method thereof

Abstract

The invention discloses a marine heavy anti-corrosion epoxy nano coating rich in aluminium, manganese and rare earth. The nano coating is formed by components A and B in a mass ratio of 18:1, wherein the component A comprises the following components in parts by mass: 14-18 parts of epoxy resin, 3-6 parts of hydroxy acrylic resin, 125-145 parts of nano aluminium powder, 25-30 parts of nano manganese powder, 1-2 parts of rare earth powder, 3-6 parts of talcum powder, 2-4 parts of barium sulfate, 3-5 parts of anti-setting aid, 1-2 parts of dispersing aid and 10-13 parts of solvent; and the component B comprises the following components in parts by mass: 50-60 parts of curing agent and 40-50 parts of solvent. The invention also discloses a preparation method of the coating. By adopting the coating, the content of nano aluminium powder in a film is high, the cost is low, the process is simple, and special equipment is not needed. The prepared coating has strong binding force with a matrix, simultaneously has better binding force with other various additional coatings, has excellent corrosion resistance in the marine atmospheric environment, has long service life, and can be used as a heavy anti-corrosion coating of steel structures such as drilling platforms, bridges and the like in the marine atmospheric environment.

Description

technical field [0001] The invention relates to a coating technology, in particular to a marine heavy anti-corrosion epoxy aluminum-manganese-rich rare earth nano coating and a preparation method thereof. Background technique [0002] At present, metal corrosion is a very serious problem. It is roughly estimated that the annual loss of metal structures, equipment and materials due to corrosion is approximately equivalent to 20%-40% of the metal output of the year, and more than 100 million tons of metals are scrapped due to corrosion every year in the world, and the economic loss accounts for 100% of the national total. 1.5%-3.5% of the total economic output value. In China, the economic loss caused by metal corrosion is as high as more than 30 billion yuan per year, accounting for 4% of the gross national product. Especially the marine corrosion in the marine environment, the corrosion of metal and other components in the marine environment, the harm it causes is very ser...

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Problems solved by technology

But the preparation temperature is still high