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Aqueous anticorrosive epoxy coating for steelworks

A technology of water-based epoxy and anti-corrosion coatings, applied in the field of coatings, can solve the problems of unsatisfactory paint film performance and toxicity, achieve excellent oil resistance and corrosion resistance, excellent wear resistance and corrosion medium resistance, and reduce costs.

Inactive Publication Date: 2014-03-26
CHANGZHOU CITY LATE COATINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the water-based epoxy coatings currently on the market can be water-based, they still contain a small amount of alcohol ether solvents, which will produce certain toxicity. Although some can meet environmental protection requirements, their paint film performance is not ideal.

Method used

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  • Aqueous anticorrosive epoxy coating for steelworks
  • Aqueous anticorrosive epoxy coating for steelworks
  • Aqueous anticorrosive epoxy coating for steelworks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh the following raw materials according to weight unit: 60 parts by weight of water-based epoxy resin, 8.8 parts by weight of deionized water, 0.9 parts by weight of dispersant (SN5040), 0.1 part by weight of defoamer (SN-154), wetting agent (OP- 10) 0.6 parts by weight, 5 parts by weight of ultrafine zinc phosphate, 5 parts by weight of titanium ash powder, 9 parts by weight of hollow glass microspheres, 6 parts by weight of silicon micropowder, 3 parts by weight of precipitated barium sulfate, thickener (ACRYSOL ASE-60 ) 0.3 parts by weight, anti-metal corrosion agent (metal chelate of ethylenediaminetetraacetic acid) 1.2 parts by weight, 0.1 parts by weight of fungicide in the tank; 30 parts by weight of water-based epoxy curing agent.

[0023] Control the dispersion speed of the high-speed disperser at 300 rpm, and add water-based epoxy resin, deionized water, dispersant, defoamer, and wetting agent in sequence. When adding the dispersant, defoamer, and wetting a...

Embodiment 2

[0031] Weigh the following raw materials according to weight unit: 50 parts by weight of water-based epoxy resin, 5.3 parts by weight of deionized water, 0.5 parts by weight of dispersant (SN5040), 0.5 parts by weight of defoamer (SN-154), wetting agent (OP- 10) 0.4 parts by weight, 8 parts by weight of ultrafine zinc phosphate, 12 parts by weight of titanium ash powder, 10 parts by weight of hollow glass microspheres, 6 parts by weight of silicon micropowder, 4 parts by weight of precipitated barium sulfate, thickener (ACRYSOL ASE-60 ) 0.6 parts by weight, anti-metal corrosion agent (chelated zinc compound of ethylenediaminetetraacetic acid and dialkyl dithiophosphoric acid) 2.5 parts by weight, 0.2 parts by weight of fungicide in the tank; 30 parts by weight of water-based epoxy curing agent.

[0032] Control the dispersion speed of the high-speed disperser at 300 rpm, and add water-based epoxy resin, deionized water, dispersant, defoamer, and wetting agent in sequence. When ...

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Abstract

The invention relates to an aqueous anticorrosive epoxy coating for steelworks. The coating is composed of a component A and a component B, a weight ratio of the component A to the component B is 100:30, the component A is composed of 50-65 parts of an aqueous epoxy resin, 5-13 parts of deionized water, 0.4-0.9 parts of a dispersant, 0.1-0.6 parts of an antifoaming agent, 0.3-0.6 parts of a wetting agent, 4-10 parts of ultrafine zinc phosphate, 5-12 parts of titanium ash, 9-22 parts of hollow glass bead, 6-12 parts of silicon micro-powder, 3-6 parts of precipitated barium sulfate, 0.3-0.6 parts of a thickening agent, 1.2-2.5 parts of a metal corrosion inhibitor, and 0.1-0.2 parts of an in-tank bactericide; and the component B is an aqueous epoxy hardener. The coating is a completely-aqueous environmentally-friendly coating, contains no chemical solvents, has better wear and corrosion medium resistances than like coatings after film solidification, and can effectively reduce the product cost.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a water-based epoxy anticorrosion coating for steel structures. Background technique [0002] At present, global environmental protection has been paid more and more attention to, and the development and promotion of environmentally friendly low-VOC or even zero-VOC environmentally friendly high-performance anti-corrosion coatings has a broad prospect. Although the water-based epoxy coatings currently on the market can be water-based, they still contain a small amount of alcohol-ether solvents, which will produce certain toxicity. Although some can meet environmental protection requirements, their paint film performance is not ideal. Contents of the invention [0003] In order to solve the shortcomings in the above-mentioned technical problems, the present invention provides a water-based epoxy anti-corrosion coating for all water-based environment-friendly steel s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/12
Inventor 周永荣吴善林周建定周剑辉
Owner CHANGZHOU CITY LATE COATINGS
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