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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 coatings, applied in the field of coatings, can solve problems such as solubility parameter mismatch, achieve the effects of easy storage and improved safety

Inactive Publication Date: 2014-07-09
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 unit: 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 pigment (the antirust pigment is zinc phosphate and aluminum tripolyphosphate Compounding, the weight ratio is 1:3), 5 parts by weight of mica powder, 5 parts by weight of iron red paste, 2 parts by weight of dispersant (COADIS 123K) and 30 parts by weight of water.

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

[0033] Take 5 parts by weight of aliphatic amine aqueous dispersion (AB-HGA) after capping and addition, 3 parts by weight of water, and 1.0 part by...

Embodiment 2

[0044] Weigh the following raw materials by weight unit: 40 parts by weight of water-based epoxy emulsion (liquid epoxy resin dispersion E51), anti-rust pigment (the anti-rust pigment is compounded 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 the anti-rust pigment, mica powder, pigment, precipitated barium sulfate, dispersant and water in turn to form a slurry with a fineness of less than 70 microns, and then add it at a stirring speed of 500r / min-800r / min Water-based epoxy emulsion, stir evenly, and get A component after filtering.

[0046] Take 15 parts by weight of the aliphatic amine aqueous dispersion (703) after capping and addition, 8 parts by weight of water...

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PUM

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Abstract

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. The coating has two components A and B; it is characterized in that: the A component is composed of 25-40 parts by weight of water-based epoxy emulsion, 10-20 parts by weight of anti-rust pigment, 5-15 parts by weight of precipitated barium sulfate, 5-10 parts by weight of mica powder, 5-10 parts by weight of pigment, 0.5-2 parts by weight of dispersant and 10-30 parts by weight of water; component B is composed of 5-15 parts by weight of curing agent, 1-5 parts by weight of cosolvent and 3-8 parts by weight of water; wherein: the anti-rust pigment is compounded of zinc phosphate and aluminum tripolyphosphate, and the weight ratio is 1:3; the two components of A and B are in a weight ratio of 8:1 ratio mix. It is an anti-corrosion and environment-friendly anti-corrosion coating in the field of 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 Patents(China)
IPC IPC(8): C09D163/00C09D7/12C09D5/08
Inventor 徐英王振华
Owner SHANGHAI MAMPLE NEW MATERIAL