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Anti-corrosion coating for surface of steel structure and preparation method thereof

An anti-corrosion coating and steel structure technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of rough film formation, poor water permeability, and high powder content in the primer, saving man-hours and construction. Effects of cost, high corrosion resistance and adhesion

Active Publication Date: 2011-04-27
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, solvent-based anti-corrosion coatings are used for anti-corrosion of steel structures. The environmental pollution caused by solvent volatilization is a problem that cannot be ignored. Water-based anti-corrosion coatings use water as a diluent and almost contain no organic solvents. The safety aspects of production, transportation and construction are beyond the reach of other coatings
[0003] The anti-corrosion coating system generally includes a primer, an intermediate paint, and a topcoat: the primer contains more powder, less base material, rough film formation, strong adhesion to steel, and good combination with the topcoat; the topcoat has more base material , the film is glossy, can protect the primer from atmospheric corrosion, and can resist weathering; but there are compatibility issues between different coatings, and their compatibility needs to be considered when choosing different coatings before and after; at present, for Water-based anti-corrosion coating with rust on the surface of steel structure has poor water penetration resistance, which seriously affects the anti-corrosion performance of the coating film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Primer preparation

[0065] A component modified epoxy resin 5.0g

[0066] Zinc phosphate 1.0 g

[0067] B component water-based epoxy resin curing agent 10.00 g

[0068] Aluminum tripolyphosphate 5.00 g

[0069] Titanium dioxide 1.00g

[0070] Talc powder 2.00 g

[0071] Barite 2.00g

[0072] Nano Fumed Silica 0.20g

[0073] Iron Oxide Red 1.00g

[0074] Deionized water 10.00g

[0075] Component C deionized water 1.00g

[0076] Preparation Process

[0077] First the above-mentioned water-based epoxy resin curing agent by weight is diluted with half of the amount of deionized water in the B component by the above-mentioned parts by weight, then stir and add the above-mentioned titanium dioxide by weight, talcum powder, weight Spar, nano meteorological silica, iron oxide red, after stirring at high speed for 5 minutes, then dilute with the remaining deionized...

Embodiment 2

[0116] Primer preparation

[0117] A component modified epoxy resin 5.00g

[0118] Zinc phosphate 1.00 g

[0119] B component water-based epoxy resin curing agent 30.00 grams

[0120] Aluminum tripolyphosphate 11.00 g

[0121] Titanium dioxide 1.00g

[0122] Talc powder 10.00 g

[0123] Barite 10.00g

[0124] Nano Fumed Silica 1.50g

[0125] Iron Oxide Red 5.00g

[0126] Deionized water 25.00g

[0127] C component deionized water 20.00g

[0128] Preparation Process

[0129] First the above-mentioned water-based epoxy resin curing agent by weight is diluted with half of the amount of deionized water in the B component by the above-mentioned parts by weight, then stir and add the above-mentioned titanium dioxide by weight, talcum powder, weight Spar, nano meteorological silica, iron oxide red, after stirring at high speed for 10 minutes, then dilute with the remaining deionized water in component B...

Embodiment 3

[0165] Primer preparation

[0166] A component modified epoxy resin 5 grams

[0167] Zinc phosphate 1 g

[0168] B component water-based epoxy resin curing agent 23.46 grams

[0169] Aluminum tripolyphosphate 5.13g

[0170] Titanium dioxide 2.73 grams

[0171] Talc powder 5.13g

[0172] Barite 5.13g

[0173] Nano Fumed Silica 1.03g

[0174] Iron Oxide Red 2.73g

[0175] Deionized water 22.41g

[0176] Component C deionized water 19.51g

[0177] Preparation Process

[0178] First the above-mentioned water-based epoxy resin curing agent by weight is diluted with half of the amount of deionized water in the B component by the above-mentioned parts by weight, then stir and add the above-mentioned titanium dioxide by weight, talcum powder, weight Spar, nano meteorological silica, iron oxide red, after stirring at high speed for 8 minutes, then dilute with the remaining ...

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PUM

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Abstract

The invention relates to an anti-corrosion coating for the surface of a steel structure, which is characterized in that: the anti-corrosion coating consists of water-dispersible epoxy base coat with rust, water-dispersible epoxy micaceous iron intermediate coat and water-dispersible crylic acid micaceous iron finishing coat; a water-dispersible anti-corrosion coating system has high corrosion resistance and adhesive force, and the water-dispersible anti-corrosion coating system is water-dispersible, non-toxic and pollution-free; and a preparation method comprises the following steps of preparing the water-dispersible epoxy base coat with the rust, preparing the water-dispersible epoxy micaceous iron intermediate coat and preparing the water-dispersible crylic acid micaceous iron finishingcoat. The preparation method is simple and convenient to implement.

Description

technical field [0001] The present invention relates to materials and their preparation, in particular to anti-corrosion coatings and their preparation methods. Background technique [0002] Coating is the most economical and effective method in the anti-corrosion method of steel structure. Generally, solvent-based anti-corrosion coatings are used for anti-corrosion of steel structures. The environmental pollution caused by solvent volatilization is a problem that cannot be ignored. Water-based anti-corrosion coatings use water as a diluent and almost contain no organic solvents. The safety of production, transportation and construction cannot be achieved by other coatings. [0003] The anti-corrosion coating system generally includes a primer, an intermediate paint, and a topcoat: the primer contains more powder, less base material, rough film formation, strong adhesion to steel, and good combination with the topcoat; the topcoat has more base material , the film is gloss...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D133/00C09D5/08
Inventor 药宁娜陈新韩钰何州文陈云
Owner CHINA ELECTRIC POWER RES INST
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