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Self-reactive protective paint on steel surface and its application

A steel surface and protective coating technology, applied in anti-corrosion coatings, coatings, etc., can solve problems such as personal health threats, low work efficiency, and environmental pollution, and achieve the effects of easy industrial implementation, reduced implementation costs, and reduced environmental pollution

Active Publication Date: 2021-04-09
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the rust removal of steel surface, one is to adopt physical method, using abrasive cloth, wire brush, spatula and other backward manual operations to scrape, shovel, chip, and grind. , dust pollution is serious, threatening human health
The other is the chemical rust removal method, which is also the most widely used process at present. The commonly used rust removers are organic acids and inorganic acids. Pollution and human health threats and other hidden dangers

Method used

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  • Self-reactive protective paint on steel surface and its application
  • Self-reactive protective paint on steel surface and its application
  • Self-reactive protective paint on steel surface and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of iron and steel surface self-reactive protective paint component is as follows: oxalic acid 25g / L, molybdic acid 25g / L, ascorbic acid 25g / L and citric acid organic acid 25g / L, EDTA disodium 25g / L, sodium gluconate 25g / L, Sodium fluoride 5g / L, hydroxylamine hydrochloride 5g / L, sodium lauryl sulfate 1g / L, activated nano-alumina micropowder 100g / L, silicon dioxide micropowder 100g / L, and the balance is water. Mix and stir the above components evenly to obtain the final coating. Manual coating or mechanical spraying to the untreated mildly corroded steel substrate surface to obtain protective coating example 1, which can protect the metal surface from wear resistance, moisture resistance, oxidation and corrosion resistance.

Embodiment 2

[0038] A kind of iron and steel surface self-reactive protective paint component is as follows: oxalic acid 25g / L, molybdic acid 30g / L, ascorbic acid 40g / L and citric acid organic acid 50g / L, EDTA disodium 40g / L, sodium gluconate 30g / L, Sodium fluoride 10g / L, hydroxylamine hydrochloride 7g / L, sodium lauryl sulfate 1g / L, sodium dodecylbenzenesulfonate 2g / L, activated nano-alumina fine powder 150g / L, silicon dioxide fine powder 100g / L L, the balance is water. Mix and stir the above components evenly to obtain the final coating. Manual coating or mechanical spraying to the untreated moderately corroded steel substrate surface to obtain protective coating example 2, which can protect the metal surface from wear resistance, moisture resistance, oxidation and corrosion resistance.

Embodiment 3

[0040] A kind of iron and steel surface self-reactive protective paint component is as follows: oxalic acid 50g / L, molybdic acid 40g / L, ascorbic acid 30g / L and citric acid organic acid 25g / L, EDTA disodium 30g / L, sodium gluconate 40g / L, Potassium fluoride 10g / L, hydroxylamine hydrochloride 8g / L, sodium dodecylsulfonate 2g / L, ethoxylated alkyl sodium sulfate 1g / L, activated nano-alumina powder 100g / L, silicon dioxide powder 150g / L, the balance is water. Mix and stir the above components evenly to obtain the final coating. Manual coating or mechanical spraying to the surface of untreated moderately corroded steel substrates to obtain protective coating example 3, which can protect the metal surface from wear resistance, moisture resistance, oxidation and corrosion resistance.

[0041] Such as Figure 1-3 As shown, the self-reactive protective coating of embodiment 3 is used to coat or mechanically spray the untreated moderately corroded steel substrate surface, and the protec...

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Abstract

A self-reactive protective coating for iron and steel surfaces and its application, the coating includes components with the following concentrations: organic acid 100g / L-200g / L, complexing agent 50g / L-100g / L, alkali metal fluoride 5g / L ~20g / L, hydroxylamine hydrochloride 5g / L~10g / L, surfactant 1g / L~5g / L, filler 200g / L~300g / L and solvent water. The invention provides a process scheme integrating metal surface pretreatment and coating protection. The metal surface can directly form a protective coating without a complicated and environmentally polluting pretreatment process, which is suitable for the protection process of various steel substrates. In order to reduce production costs, reduce environmental pollution, and promote the upgrading of traditional industries, it plays a positive role in promoting.

Description

technical field [0001] The invention relates to the technical field of metal surface pretreatment, in particular to a steel surface self-reactive protective paint and its application. Background technique [0002] According to incomplete statistics, 1 / 3 of the world's annual steel output is lost due to corrosion, and the total annual corrosion cost in my country exceeds 2.1 trillion yuan, accounting for 3.34% of the gross national product. Since the 1930s in my country, steel anti-corrosion technology and coating products have been gradually developed, especially after the 1970s, they have been widely used, and advanced technology, technology, design, production and management models have been continuously transformed and replaced. These major changes have increased the amount of coating and extended the service life of steel equipment. But at present, China's iron and steel anticorrosion technology, especially the coating pre-treatment process is still far behind the level ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/08C09D7/61C09D7/63C23G1/08
CPCC09D1/00C09D5/08C23G1/088C09D7/61C09D7/63
Inventor 陈运法仉小猛杜英超于博王延华魏连启叶树峰
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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