Nano marine corrosion resisting priming paint

Abstract

The invention discloses nano marine corrosion resisting priming paint. The nano marine corrosion resisting priming paint is characterized by being prepared from, by weight, 20-30 parts of linear nhenolic epoxy resin, 2-4 parts of tristearin, 5-7 parts of phenolic aldehyde amine curing agent, 4-6 parts of polyamide curing agent, 2-4 parts of titanium dioxide, 8-12 parts of nickel alloy powder, 3-5 parts of nano biological antifouling agent, 1-3 parts of zinc oxide, 15-18 parts of acetone, 12-14 parts of filler and 2-5 parts of acetic acid. The priming paint has constructability and storage stability and is cured fast, and a film layer is even; as nickel alloy powder is added, the marine corrosion problem of engineering parts is solved, and the priming paint has good corrosion resistance, abrasion resistance, water resistance and chemical resistance; nano capsaicine and P-cinnamic sulphate in the nano biological antifouling agent have a high adhesion inhibiting effect on marine bacteria and barnacles, nano homarine can prevent adhesion of marine benthic diatom and barnacles and has an avoiding effect on marine organisms, adhesion capacity of marine organisms is destroyed to prevent and control pollution, and the environmental protection property is high.

Description

technical field [0001] The invention belongs to the technical field of marine anti-corrosion paints, in particular to a nano-scale marine anti-corrosion primer. Background technique [0002] Marine seawater corrosion is mainly chloride ion corrosion. Marine chloride ions can destroy the protective layer of metal oxide film, forming pitting corrosion or pitting corrosion, and intergranular corrosion of metals. Offshore and marine engineering equipment is located in an environment with rainy, high temperature, salty fog and strong wind currents, and its service conditions are generally >C5 according to the ISO9225 environmental evaluation standard, which belongs to the extremely harsh environment. The exposed parts will be subject to the combined effects of strong atmospheric corrosion, electrochemical corrosion and airflow erosion, and the service life of various steel structures is much lower than that of the general inland outdoor environment. Under the effect of tensil...

AI Technical Summary

Problems solved by technology

Under the action of tensile stress on the metal, cracks will appear in the area where the passivation film is destroyed, which will become the anode area of ​​the corrosion battery. Continuous electrochemical corrosion may eventually lead to the fracture of the metal.

Since different parts of offshore platforms (such as pile legs, exposed decks, ballast water tanks, upper modules, etc.) have different performance requirements for coatings, in the current construction process of offshore platforms, more than 5 types of coatings are generally used for coating platforms. Different primers, complex matching, and inconvenient construction

The primers currently in use have problems such as poor compatibility with topcoats from other manufacturers, poor adhesion at the interface between the galvanized layer and aluminum, etc., and the erosion resistance is not strong, and there are still great limitations in application.