Water-based EAU high-barrier thick-film anticorrosive paint

Abstract

The invention belongs to the technical field of anticorrosive coatings, and particularly relates to a water-based EAU high-barrier thick-film anticorrosive coating which comprises a component A, a component B and a component C in a mass ratio of 1: (1-3): (5-7), the component A comprises the following components in percentage by mass: 30-40% of a curing agent, 0.05-0.1% of a defoaming agent, 0.05-0.1% of a wetting agent and the balance of deionized water; the component B comprises the following components in percentage by mass: 100% of water-based EAU emulsion; the component C is prepared from the following components in percentage by mass: 0.05 to 0.1 percent of lithium carbonate, 0.05 to 0.1 percent of tartaric acid, 1 to 3 percent of basalt sheet, 0.1 to 0.3 percent of water reducing agent, 0.1 to 0.3 percent of hydroxymethyl cellulose ether, 55 to 70 percent of high-alumina cement and the balance of high-alumina clinker. The water-based EAU high-barrier thick-film anticorrosive paint is specially used for providing a protective lining for a structure exposed in an urban sewage environment, is used for resisting abrasion and biological corrosion caused by hydrogen sulfide circulation, can be used for repairing an existing sewage structure, can also be used for a new building, can be matched with anticorrosive mortar for use, can also be independently used, and can be applied to the field of construction. The paint has excellent corrosion resistance.

Description

technical field [0001] The application belongs to the technical field of anti-corrosion coatings, in particular to a water-based EAU high-barrier thick-film anti-corrosion coating. Background technique [0002] A relatively common toxic and harmful substance in urban sewage environment is hydrogen sulfide (H 2 S), which is usually due to the reduction of sulfate in urban sewage under the action of sulfate-reducing bacteria. Among the two main sources of urban sewage, on the one hand, the sulfate content in domestic sewage is usually 20-100 mg / L; on the other hand, industrial wastewater entering the urban drainage system will significantly increase the sulfate content in urban sewage. These sulfates are converted to sulfides under certain conditions, eventually forming hydrogen sulfide and sulfuric acid, which cause corrosion to structures exposed to municipal sewage environments. [0003] In order to improve the corrosion resistance of these structures, it is usually neces...

AI Technical Summary

Problems solved by technology

[0004] In view of the fact that there are few anti-corrosion coatings used in sewage environments on the market and there is still room for further improvement, it is necessary to develop a water-based EAU anti-corrosion coating with better barrier properties and better anti-corrosion properties

Images