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

A technology of epoxy zinc phosphate and anti-corrosion coating, applied in the coating field, can solve problems such as solubility parameter mismatch, achieve the effects of easy storage and improved safety

Inactive Publication Date: 2012-07-04
SHANGHAI MAMPLE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment l

[0031] Weigh the following raw materials by weight: 25 parts by weight of water-based epoxy emulsion (liquid epoxy resin dispersion E20), 15 parts by weight of precipitated barium sulfate, 20 parts by weight of antirust pigments (the antirust pigments are zinc phosphate and aluminum tripolyphosphate) Compound, the weight ratio is 1:3), 5 parts by weight of mica powder, 5 parts by weight of iron red slurry, 2 parts by weight of dispersant (COADIS 123K) and 30 parts by weight of water.

[0032] Under high-speed stirring, mix and disperse anti-rust pigment, mica powder, pigment, precipitated barium sulfate, dispersant and water in order to form a slurry with a fineness of less than 70 microns, and then add at a stirring speed of 500r / min-800r / min. Water-based epoxy emulsion, stir evenly, and obtain component A after filtration.

[0033] 5 parts by weight of end-capped and added aliphatic amine aqueous dispersion (AB-HGA), 3 parts by weight of water, and 1.0 part by weight of prop...

Embodiment 2

[0044] Weigh the following raw materials by weight: 40 parts by weight of water-based epoxy emulsion (liquid epoxy resin dispersion E51), anti-rust pigment (the anti-rust pigment is a compound of zinc phosphate and aluminum tripolyphosphate, and the weight ratio is 1:3 ) 10 parts by weight, 10 parts by weight of mica powder, 10 parts by weight of titanium white paste, 5 parts by weight of precipitated barium sulfate, 0.5 parts by weight of dispersant (COADIS 123K) and 10 parts by weight of water.

[0045] Under high-speed stirring, mix and disperse anti-rust pigment, mica powder, pigment, precipitated barium sulfate, dispersant and water in order to form a slurry with a fineness of less than 70 microns, and then add at a stirring speed of 500r / min-800r / min. Water-based epoxy emulsion, stir evenly, and obtain component A after filtration.

[0046] Take 15 parts by weight of end-capping and added aliphatic amine aqueous dispersion (703), 8 parts by weight of water, and 5 parts b...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/12C09D5/08
Inventor 徐英王振华
Owner SHANGHAI MAMPLE NEW MATERIAL
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