Graphene oxide-containing anticorrosive paint special for steel structure and preparation method thereof

Abstract

The invention belongs to the technical field of corrosion prevention and particularly relates to a graphene oxide-containing anticorrosive coating special for a steel structure and a preparation method thereof. A paint primer is prepared from 30 to 35 parts of epoxy resin, 12 to 15 parts of tetrabutyl titanate, 8 to 10 parts of chromium acetylacetonate, 8 to 10 parts of polyvinyl formal and 90 to100 parts of zinc powder. A finish paint is prepared from 65 to 70 parts of tetrafluoroethylene, 20 to 25 parts of graphene oxide, 12 to 15 parts of styrene, 3 to 5 parts of acrylic acid, 12 to 15 parts of methyl isobutyl ketone, 0.8 to 1.0 part of azodiisobutyronitrile and 0.5 to 0.6 part of dibutyltin dilaurate. The primer prepared by the preparation method is good in adhesive force with a steelassembly of a power transmission tower, good in adhesiveness, and excellent in electrochemical or chemical corrosion resistance, the weather resistance and corrosion resistance of a coating layer areimproved, the curing time is short, the durability is good, the spraying is simple, the coating thickness is controllable, the weather resistance is good, the ultraviolet damage is resisted, and theadaptability is wide.

Description

technical field [0001] The invention belongs to the technical field of anticorrosion, and in particular relates to a special anticorrosion coating for steel structures containing graphene oxide and a preparation method thereof. Background technique [0002] Steel structure is a structure composed of steel materials, which is one of the main types of building structures. All exposed steel structural components shall be treated with anti-corrosion treatment except within the scope of fire protection. Steel structure anti-corrosion is generally designed for chemical atmospheric corrosion, and anti-corrosion coatings are used for anti-corrosion treatment, and its service life is greater than 5 years. The transmission tower is the supporting point of the overhead line. Due to the rapid economic development, the demand for power is increasing day by day, and a safe and reliable power supply is very important. The power transmission network undertakes the task of national power t...

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Problems solved by technology

[0005] Chinese patent application (CN201110403868.2) provides a new anti-corrosion transmission tower preparation method, the coating uses a composite coating of fluorine resin and polyphenylene sulfide resin as the main components, and the service life of the coating can reach more than 30 years, but , the content of polyphenylene sulfide resin in the coating is high, and the molecular structure of polyphenylene sulfide makes it hard and brittle. At the same time, the top coat is made of pure fluorine coating. The surface tension of pure fluorine coating is small, and it is difficult to wet. Dispersion, poor leveling, resulting in uneven thickness of the prepared coating, and the existing coating requires primer, intermediate paint and top coat, and the application thickness is relatively large

The existing zinc-rich epoxy resin has good initial adhesion due to high zinc content, but poor durability; at the same time, epoxy resin modified by inorganic fillers is easy to absorb and agglomerate due to the addition of nano inorganic fillers, reducing the performance of the coating

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