Environmental-friendly waterborne epoxy zinc phosphate anti-corrosion paint for steel structures and preparation method thereof

Abstract

The invention belongs to the technical field of paint and particularly relates to environmental-friendly waterborne epoxy zinc phosphate anti-corrosion paint for steel structures and a preparation method of the environmental-friendly waterborne epoxy zinc phosphate anti-corrosion paint. The paint comprises an ingredient A and an ingredient B and is characterized in that the ingredient A consists of 25 to 40 weight parts of waterborne epoxy emulsion, 10 to 20 weight parts of rust-proof pigment, 5 to 15 weight parts of precipitated barium sulfate, 5 to 10 weight parts of mica powder, 5 to 10 weight parts of pigment, 0.5 to 2 weight parts of dispersing agents and 10 to 30 weight parts of water, and the ingredient B consists of 5 to 15 weight parts of curing agents, 1 to 5 weight parts of cosolvents and 3 to 8 weight parts of water, wherein the rust-proof pigment is compounded by zinc phosphate and aluminum triphosphate according to the weight ratio of 1:3, and the ingredient A and the ingredient B are mixed according to the weight ratio of 8:1. The paint belongs to the anti-corrosion paint with anti-corrosion and environmental-friendly effects in the field of the steel structures.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to an environment-friendly water-based epoxy zinc phosphate anticorrosion coating for steel structures and a preparation method thereof. Background technique [0002] At present, in the field of steel structure anti-corrosion, solvent-based coatings are basically used for anti-corrosion coatings for steel. Especially the widespread use of solvent-based epoxy resins has caused great harm to the environment and the human body. With the increasing requirements for environmental protection, epoxy coatings have shifted from high-VOC solvent-based formulations to low-VOC solvent-based formulations. In order to reduce the emission of harmful substances, it is an inevitable trend to research and develop water-based epoxy resin anti-corrosion coatings for steel structures. [0003] The research and development process of waterborne epoxy resin has gone through 3 stages. [0004] The firs...

AI Technical Summary

Problems solved by technology

Another form of the second-generation waterborne epoxy system is to make the resin into a water-dispersed epoxy emulsion, which also has the problem of mismatching solubility parameters.

[0008] However, water-based epoxy resin coatings have not yet been used in the field of steel structure anti-corrosion. Utilizing the good physical and mechanical properties, chemical resistance, electrical insulation and bonding properties of water-based epoxy resins, industrial coatings prepared with it as a base material Anti-corrosion coatings have great development prospects in the field of steel structures