Waterborne epoxy low-surface treatment anticorrosive paint, preparation method and application thereof

Abstract

The invention discloses a waterborne epoxy low-surface treatment anticorrosive paint, a preparation method and application thereof. The paint is composed of 80-85 weight parts of matrix coating, 10-12weight parts of a curing agent and 3-6 weight parts of deionized water. Specifically, the matrix coating is prepared from waterborne epoxy resin, a nano composite liquid, a rust conversion agent, titanium dioxide, an antirust pigment, micron basalt scales, a wetting dispersant, a leveling agent, a defoaming agent and deionized water. The matrix coating, the curing agent and the distilled water are added into a clean container according to a weight ratio of 80-85:10-12:3-6 and are mixed uniformly, and then curing is carried out for 5-10min, thus obtaining the paint applicable to coating. The paint disclosed by the invention can be applied to large steel structures like bridges, pipelines and complex equipment without thorough rust removal, and has excellent corrosion resistance.

Description

technical field [0001] The invention relates to a water-based epoxy anticorrosion coating with low surface treatment, a preparation method and application thereof, and belongs to the field of coatings. Background technique [0002] In recent years, a large number of steel structures such as offshore oil drilling platforms, power plants, built bridges and stadium facilities at home and abroad have entered the maintenance period, and the old coating needs to be repainted. However, it is very difficult to perform pre-sand blasting treatment on the basis of these built steel structures, involving environmental protection, construction difficulty and engineering maintenance cost. [0003] With the development of industry, the industrial paint market for metal protection and decoration also develops and grows accordingly. The protective coatings used in some outdoor metal engineering facilities are anti-corrosion coatings, which need to be completely derusted, but some large-scal...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new type of high-efficiency water-based epoxy low surface treatment anti-corrosion coating and its preparation for the problem that large-scale steel structures and equipment, such as bridges, pipelines, and complex equipment, cannot be thoroughly sandblasted and rust-removed during the maintenance process. Methods and uses, low surface treatment coatings (Surface-tolerant Coating) are mainly aimed at the situation where it is impossible to fully reach the sandblasting grade Sa2. The surface of St3 level and the surface of the old coating choose this type of coating, which has good permeability and substrate adhesion; there will be no compatibility problems on the old coating; it has certain corrosion inhibition performance; excellent outdoor construction, etc. features