Aqueous anticorrosive paint of steel structure and preparation method thereof

A technology for anti-corrosion coatings and steel structures, applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of poor adhesion and water resistance of coatings, incomplete rust conversion, poor water resistance, etc., and achieve a firm, dense and uniform film layer , Conducive to environmental protection, the effect of water resistance improvement

Active Publication Date: 2013-03-27
马鞍山市安工大智能装备技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the existing water-based antirust coatings with rust generally have problems such as high cost, poor water resistance, and poor decoration.
For example, the invention patent CN1264754A uses phosphoric acid and organic acids, catalysts, corrosion inhibitors, active agents, penetrating agents and alloy powders to prepare water-based rust conversion agents, which solves the problems of water-based rusty coatings and construction pollution. The binding force with the outer coating film is poor, and the invention patent CN10132726A uses rust converting agents such as tannic acid and phosphoric acid, and styrene-acrylic solution as film-forming substances, together with fillers, etc. to prepare water-based rusty coati

Method used

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  • Aqueous anticorrosive paint of steel structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Preparation of rust conversion agent

[0037] Add 8 grams of ethanol and 48 grams of deionized water into the flask and mix well, then add 8 grams of pyrogallic acid and 8 grams of gallic acid respectively, after completely dissolving, then add 8 grams of polyaniline emulsion and stir well, and finally add in batches 2 grams of phosphoric acid, 0.5 grams of citric acid and 17 grams of deionized water were stirred at room temperature to obtain the rust conversion agent;

[0038] (2) Prepare the target product steel structure water-based anti-corrosion paint

[0039] Add 50 grams of cationic styrene-acrylic emulsion and 8 grams of epoxy emulsion to the flask and stir evenly, then slowly add 18 grams of rust conversion agent under stirring conditions, stir well, and then add 0.15 grams of glycerol and 0.3 grams of ethyl alcohol in batches. Glycol ether, 0.2 grams of polyvinyl alcohol, 4 grams of 5wt.% polyvinyl alcohol aqueous solution and 10 grams of deionize...

Embodiment 2

[0047] (1) Preparation of rust conversion agent

[0048] Add 10 grams of ethanol and 60 grams of deionized water into the flask and mix well, then add 10 grams of pyrogallic acid and 5 grams of gallic acid to dissolve completely, then add 10 grams of polyaniline emulsion and stir well, and finally add in batches 1 gram of phosphoric acid, 6 grams of citric acid and 10 grams of deionized water were stirred at room temperature to obtain the rust converting agent;

[0049] (2) Prepare the target product steel structure water-based anti-corrosion paint

[0050] After adding 60 grams of cationic styrene-acrylic emulsion and 6 grams of epoxy emulsion into the flask and stirring evenly, slowly add 15 grams of rust conversion agent under stirring conditions, stir well, and then add 0.15 grams of glycerol and 0.1 grams of ethyl alcohol in batches. Glycol ethyl ether, 2 grams of 5wt.% gelatin aqueous solution and 17 grams of deionized water are mixed and heated to 30°C to 50°C,...

Embodiment 3

[0058] (1) Preparation of rust conversion agent

[0059] Add 5 grams of ethanol and 30 grams of deionized water into the flask and mix well, then add 5 grams of pyrogallic acid and 10 grams of gallic acid respectively, after completely dissolving, add 5 grams of polyaniline emulsion and stir well, and finally add in batches 3 gram of phosphoric acid, 0.4 gram of citric acid and 30 gram of deionized water, after stirring at normal temperature, obtain described rust conversion agent;

[0060] (2) Prepare the target product steel structure water-based anti-corrosion paint

[0061] After adding 40 grams of cationic styrene-acrylic emulsion and 10 grams of epoxy emulsion to the flask and stirring evenly, slowly add 25 grams of rust conversion agent under stirring conditions, stir well, and then add 0.15 grams of sorbitol and 0.3 grams of ethyl alcohol in batches. Glycol ethyl ether, 6 grams of 5wt.% gelatin aqueous solution and 5 grams of deionized water are mixed and heat...

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Abstract

The invention provides an aqueous anticorrosive paint of a steel structure and a preparation method thereof, belonging to the technical field of steel surface anticorrosive coating. The paint comprises the following materials in percentage by weight: 15-25% of rust transforming agent, 6-10% of epoxy emulsion, 40-60% of cation styrene-acrylic emulsion, 0.1-0.2% of penetrating agent, 0.1-0.5% of glycol ether, 0.1-0.3% of dispersion stabilizer and 10-20% of deionized water. The product prepared by the preparation method provided by the invention has the characteristics such as a simple preparation process, low cost, excellent performances, and the like.

Description

technical field [0001] The invention belongs to the technical field of anticorrosion coating on steel surfaces, and in particular relates to a water-based rust surface anticorrosion coating for steel structures and a preparation method thereof. The anticorrosion coating can be directly used to coat the surface of corroded steel structure materials. Background technique [0002] According to statistics, the direct economic loss caused by metal corrosion accounts for about 4% of the gross national product in my country every year. Therefore, the corrosion protection of metals has attracted more and more attention. In the previous metal anti-corrosion coating technology, the metal surface pretreatment before painting accounted for about 45% of the total price of the entire coating project. In order to protect steel from corrosion and prolong its service life, anti-corrosion coating on steel has become the most economical and effective method. In order to obtain excellent corr...

Claims

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Application Information

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IPC IPC(8): C09D125/14C09D163/00C09D5/08
Inventor 古绪鹏袁美华夏友谊杨建国乔红斌宁珅
Owner 马鞍山市安工大智能装备技术研究院有限公司
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