Static-conducting and anti-corrosive coating on inner wall of oil tank, and preparation method of static-conducting and anti-corrosive coating

Abstract

The invention discloses a static-conducting and anti-corrosive coating and a preparation method thereof. The static-conducting and anti-corrosive coating comprises bisphenol A epoxy resin, a reactive diluent, rutile titanium dioxide, conductive mica powder, a coupling agent and a flexibilizer. The bisphenol A epoxy resin is ground; the reactive diluent, the flexibilizer, the coupling agent and a light-colored static-conducting material are added; and the coating free of an inertial and volatile solvent is prepared. The coating has the characteristics of high cohesion, good closure and stable static conductivity, is suitable for internal anti-corrosive and static-conducting protection of oil storage and transport equipment such as an oil storage tank, an oil transport pipeline and an oil transport tank in the petrochemical industry, and is also suitable for anti-corrosive and anti-static protection of a gas tank, a water gate and an underground pipeline.

Description

technical field [0001] The invention relates to an anti-corrosion paint and a preparation method thereof, in particular to an anti-static anti-corrosion paint on the inner wall of an oil tank and a preparation method thereof. Background technique [0002] During the production, transportation, storage, and use of liquid petroleum products, static charges are generated between the oil and the oil itself or between the oil and other media due to friction and erosion. If the generation of static charges is faster than the leakage of static charges speed, it will accumulate static charge, and the film-forming substances of anti-corrosion coatings in the tank wall are mostly insulating polymer substances, and the surface resistivity of polymer materials is very high, exceeding 10 15 Ω, so that the generated static charge is difficult to leak for a while, and the static charge accumulates to a certain extent to generate electrostatic discharge. When the energy of the discharge is ...

AI Technical Summary

Problems solved by technology

[0003] In view of the electrostatic hazards that may be caused by liquid petroleum products during production, transportation, storage, and use, the metal powder medium in current anti-corrosion coatings is easily oxidized, resulting in a decrease in the electrical conductivity of the coating film, and the electrochemical corrosion of the tank body accelerates the corrosion of steel; The color of conductive carbon black and graphite medium is limited, so it can only be made into dark-colored coatings. The visual inspection inside the tank is limited, and its oil absorption is high. , Permeation resistance decreased, causing corrosion under the coating film, poor anti-corrosion performance, therefore, the existing anti-corrosion coating can not effectively meet the production, transportation, storage and use of liquid petroleum products