Water-borne double-component epoxy coating

Abstract

The invention discloses water-borne double-component epoxy coating. The water-borne double-component epoxy coating comprises a component A and a component B, wherein the weight ratio of the component A to the component B is (1-2):(1.5-2.5); the component A comprises the following raw materials in parts by weight: 20 to 30 parts of diethylenetriamine, 2 to 5 parts of hexamethylenediamine, 2 to 4 parts of 1,3-diamido-hexylamine, 1 to 2 parts of ethylene glycol butyl ether, 1 to 3 parts of propanediol butyl ether, 1 to 3 parts of gamma-aminopropyltriethoxysilane, 35 to 40 parts of water, 1 to 2 parts of a thixotropic agent, 1 to 2 parts of a defoaming agent, 1 to 2 parts of a dispersing agent, 1 to 3 parts of iron oxide red, 1 to 2 parts of zinc phosphate, 1 to 2 parts of aluminium triphosphate, 5 to 10 parts of silica powder, 10 to 15 parts of modified coal ash, 1 to 2 parts of an acrylic acid type thickener, 2 to 8 parts of organobentonite and 1 to 5 parts of quartz powder; and the component B comprises the following raw materials in parts by weight: 40 to 50 parts of water-borne epoxy resin, 10 to 15 parts of acrylic epoxy ester resin and 2 to 5 parts of water.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based two-component epoxy coating. Background technique [0002] Most of the large-scale high-temperature liquid storage tanks or pipelines in my country currently use metal pipes. Since the pipe walls are basically in a humid or high-temperature state, linings are generally added to the inner walls of these tanks and pipes, or paint is directly applied to the inner walls. In order to improve the high temperature resistance and corrosion resistance of these equipment, prolong their service life. The lining protection method often used for the inner wall of liquid storage tanks or pipelines is to use composite materials, but the process is complicated, the cost is high, and the popularity is low. At present, it is more common to use suitable paint to form a protective coating on the surface of the inner wall. Simple, effective, and low cost, traditional epoxy coatings hav...

AI Technical Summary

Problems solved by technology

The lining protection method often used for the inner wall of liquid storage tanks or pipelines is to use composite materials, but the process is complicated, the cost is high, and the popularity is low. At present, it is more common to use suitable paint to form a protective coating on the surface of the inner wall. Simple, effective, and low cost, traditional epoxy coatings have relatively high requirements on the surface of the substrate. In some harsh environments, the anti-corrosion, high temperature resistance and mechanical properties of epoxy coatings cannot meet the requirements for use. To meet the requirements of the above fields, how to prepare an epoxy coating with good mechanical properties, excellent corrosion resistance and high temperature resistance has become a technical problem to be solved at present