Petrochemical water-based high-temperature-resistant, anticorrosive and abrasion-resistant coating and method for preparing same

Abstract

The invention belongs to the field of coating, and discloses petrochemical water-based high-temperature-resistant, anticorrosive and abrasion-resistant coating and a method for preparing the same. The petrochemical water-based high-temperature-resistant, anticorrosive and abrasion-resistant coating comprises a coating of water-based zinc-rich primer, a coating of water-based mica iron oxide intermediate paint and a coating of water-based nanometer abrasion-resistant finish paint. The three coatings respectively comprise, by weight, 35-50 parts of water-based film-forming agents, 20-50 parts of curing agents, 25-85 parts of packing and 2-4 parts of functional auxiliaries. The petrochemical water-based high-temperature-resistant, anticorrosive and abrasion-resistant coating and the method have the advantages that anticorrosive effects can be realized by the water-based zinc-rich primer and the water-based mica iron oxide intermediate paint, the water-based nanometer abrasion-resistant finish paint has high-temperature and abrasion-resistant functions, layer structures of a water-based mica iron oxide intermediate layer, the primer and the finish paint can be effectively adhered with one another, and accordingly the problem of easiness in peeling of existing coatings with multilayer structures can be solved; the three coatings are combined with one another, and accordingly requirements of petrochemical oil refining equipment on high-temperature-resistant, anticorrosive and abrasion-resistant performance of coating can be effectively met.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a water-based high-temperature-resistant anti-corrosion and wear-resistant coating for the petrochemical industry and a preparation method thereof. Background technique [0002] In the past ten years, as a national basic industry with strategic significance, the petrochemical industry has developed rapidly, and my country's petroleum industry has grown at a rate of more than 10% every year. With the investment of 10 billion or even 100 billion extra-large new or expansion projects, the amount of heavy-duty anti-corrosion coatings in the anti-corrosion industry of petrochemical oil refining equipment has also increased rapidly. The industry has put forward the concept of "heavy-duty anti-corrosion coatings", aiming to solve the problem that ordinary anti-corrosion coatings are difficult to solve due to equipment damage caused by harsh corrosive environments in the petrochemical field. [...

AI Technical Summary

Problems solved by technology

The coating has good anti-scratch and anti-fouling properties, but it does not have anti-corrosion properties, and because it can produce radiation curing, the coating will have a limited shelf life after the package is opened, which is inconvenient for customers to use

[0009] Chinese invention patent CN102924985B discloses a smokeless and odorless inorganic nano high temperature resistant anti-corrosion and wear-resistant coating, which uses organosiloxane containing various groups as the film-forming substance and uses nano-silica with different particle sizes for compounding. This kind of coating can withstand the high temperature of 800-1000 ℃. The disadvantage is that the coating uses organic siloxane as the film-forming substance, which not only has a low solid content, but also has acid resistance that cannot meet the heavy-duty anti-corrosion requirements of oil refining equipment.

On the other hand, the use of nano-silica materials with different particle sizes is costly and increases the actual application cost

[0010] Through further search and analysis of the literature, there has been no report on coatings that use water-based solvents and nano-scale fillers and have both high-temperature, corrosion-resistant and wear-resistant properties.

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