Chelate type flashing erosion-resistant water-based metal anticorrosion coating and preparation method thereof

A metal anti-corrosion and chelating technology, which is applied in the direction of anti-corrosion coatings, polyester coatings, polyurea/polyurethane coatings, etc., can solve the problems that restrict the popularization and application of water-based metal anti-corrosion coatings, affect the anti-corrosion effect and service life of coatings, and achieve high Anti-flash corrosion ability, corrosion inhibition, and the effect of reducing corrosion current

Inactive Publication Date: 2011-08-17
大连市轻化工研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the water-oxygen blend contained in the water-based paint will instantly rust when it contacts the metal surface, which is usually called "flash corrosion", the rust layer will seriously affect the anti-corrosion effect and use of the paint. The service life restricts the popularization and application of water-based metal anti-corrosion coatings

Method used

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  • Chelate type flashing erosion-resistant water-based metal anticorrosion coating and preparation method thereof
  • Chelate type flashing erosion-resistant water-based metal anticorrosion coating and preparation method thereof
  • Chelate type flashing erosion-resistant water-based metal anticorrosion coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Under stirring, add 3 kg of chelating surfactant N-dodecylethylenediamine triacetate sodium, 5 kg of compound additives and 10 kg of deionized water into the mixing tank, slowly add 7 kg of compound filler within 10 minutes, and continue stirring 20 minutes; within 40 minutes, evenly add 25kg of superfine anti-corrosion pigment zinc calcium phosphate, and continue to stir for 20 minutes; after the obtained color paste is dispersed and homogenized by a high-shear emulsifier for 30 minutes, it is sent to a horizontal sand mill for grinding for 60 minutes to obtain Pigment paste with particle size ≤10μm.

[0029] Add 50 kg of ternary blending resin into the mixing tank, under high-speed stirring at 1400 rpm, slowly add the above-mentioned pigment and filler color paste within 30 minutes, and continue stirring for 60 minutes to obtain a chelating type anti-flash corrosion water-based metal anti-corrosion coating product.

Embodiment 2

[0031] Under stirring, add 4 kg of chelating surfactant N-dodecanoyl ethylenediamine triacetate sodium, 4 kg of compound additives and 10 kg of deionized water into the mixing tank, slowly add 6 kg of compound filler within 10 minutes, and continue stirring 20min; within 40 minutes, evenly add 21kg of superfine anti-corrosion pigment aluminum zinc phosphate, and continue to stir for 20 minutes; after the obtained color paste is dispersed and homogenized by a high-shear emulsifier for 30 minutes, it is sent to a horizontal sand mill for grinding for 60 minutes to obtain Pigment paste with particle size ≤10μm.

[0032] Add 55 kg of ternary blend resin into the mixing tank, and slowly add the above-mentioned pigment and filler color paste within 30 minutes under high-speed stirring at 1400 rpm, and continue stirring for 60 minutes to obtain a chelating type anti-flash corrosion water-based metal anti-corrosion coating product.

Embodiment 3

[0034] Under stirring, add 5 kg of chelating surfactant lauryl monoester citrate, 3 kg of compound additives and 10 kg of deionized water into the mixing tank, slowly add 4 kg of composite fillers within 10 min, and continue stirring for 20 min; Within minutes, add 18kg of superfine anti-corrosion pigment composite iron-titanium powder evenly, and continue to stir for 20 minutes; the resulting color paste is dispersed and homogenized by a high-shear emulsifier for 30 minutes, and then sent to a horizontal sand mill for grinding for 60 minutes to obtain a particle size of ≤10 μm pigment paste.

[0035] Add 60 kg of ternary blend resin into the mixing tank, and slowly add the above-mentioned pigment and filler color paste within 30 minutes under high-speed stirring at 1400 rpm, and continue stirring for 60 minutes to obtain a chelating type anti-flash corrosion water-based metal anti-corrosion coating product.

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Abstract

The invention relates to a chelate type flashing erosion-resistant water-based metal anticorrosion coating and a preparation method thereof. A chelate type surfactant is used as a flashing erosion-resistant component. Being stirred, the chelate type surfactant, composite assistant and deionized water are added and blended and then continually stirred with composite filler added. Being stirred, superfine anticorrosion pigment is added uniformly and then is stirred continuously for a certain time. Color paste obtained is dispersed and homogenized by a high-shear emulsion machine and then sent to a horizontal sand mill to be ground into pigment filler color paste with the particle size being less than or equal to 10mum. Being stirred at high speed, ternary blending resin is slowly added in the pigment filler color paste and stirred continuously for a certain time so that polyvalent metal oxide formed by flashing erosion and the chelate type surfactant form complex. Under the migration action of the surfactant, the complex can be easily stripped from a metal substrate, so that the substrate remains smooth. Therefore, the anticorrosion ability of the water-based anticorrosion coating is improved and the adhesion of the coating on the substrate is not affected.

Description

technical field [0001] The invention relates to a water-based metal anti-corrosion coating, in particular to a chelating type anti-flash corrosion water-based metal anti-corrosion coating and a preparation method thereof. Background technique [0002] Water-based metal anti-corrosion coatings are metal anti-corrosion coatings prepared by replacing toxic, harmful, flammable, explosive, environment-polluting, and resource-wasting organic solvents with water. It is one of the future development directions of metal anti-corrosion coatings. However, because the water-oxygen blend contained in the water-based paint will instantly rust when it contacts the metal surface, which is usually called "flash corrosion", the rust layer will seriously affect the anti-corrosion effect and use of the paint. Long service life restricts the popularization and application of water-based metal anti-corrosion coatings. Therefore, improving flash corrosion resistance is one of the main problems th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D167/00C09D175/04C09D5/08C09D7/12
Inventor 杨西江
Owner 大连市轻化工研究所有限公司
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