Metal anticorrosive coating for repairing rusted steel

A metal anti-corrosion and coating technology, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of noise pollution, construction difficulties, poor film-forming ability, etc., to improve anti-corrosion durability, conducive to environmental protection, and the film layer is firm and dense. Effect

Inactive Publication Date: 2018-09-25
陈时全
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of construction conditions, it is difficult to use mechanized construction methods in the maintenance process of many large buildings, bridges, ships and other complex steel structural components. Manual or electric tools can only be used to remove rust, but the quality of rust removal cannot be obtained. Guarantee, difficult construction, huge cost
[0004] At present, the anticorrosion of domestic steel structures still uses the old process of painting after sandblasting, but there are disadvantages in the process such as dead angles of complex structural parts, dust pollution, noise pollution, and high cost.
For this reason, extensive research on rust conversion primers has been carried out a

Method used

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  • Metal anticorrosive coating for repairing rusted steel
  • Metal anticorrosive coating for repairing rusted steel
  • Metal anticorrosive coating for repairing rusted steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A metal anticorrosion coating for repairing corroded steel of the present embodiment comprises the following components in parts by mass:

[0031]

[0032] Above-mentioned a kind of preparation method for repairing the metal anticorrosion paint of corroded steel, comprises the following steps:

[0033] 1) In parts by mass, weigh 22 parts of acrylic acid, 9 parts of tannic acid, 6 parts of isopropanol and 1.5 parts of activator citric acid;

[0034] 2) Add ethanol, tannic acid and water into the reactor, mix and dissolve completely, add isopropanol, activator and water respectively, then add acrylic acid, film-forming aid, and defoamer, and continue to stir for 20 minutes -30min, make described metal anticorrosion paint.

Embodiment 2

[0036] A metal anticorrosion coating for repairing corroded steel of the present embodiment comprises the following components in parts by mass:

[0037]

[0038]

[0039] Above-mentioned a kind of preparation method for repairing the metal anticorrosion paint of corroded steel, comprises the following steps:

[0040] 1) In parts by mass, weigh 20 parts of acrylic acid, 8 parts of tannic acid, 4 parts of isopropanol and 1 part of activator citric acid;

[0041] 2) Add ethanol, tannic acid and water into the reactor, mix and dissolve completely, add isopropanol, activator and water respectively, then add acrylic acid, film-forming aid, and add defoamer and organic film aid agent, and continue to stir for 20min-30min to make the metal anti-corrosion coating.

Embodiment 3

[0043] A metal anticorrosion coating for repairing corroded steel of the present embodiment comprises the following components in parts by mass:

[0044]

[0045] Above-mentioned a kind of preparation method for repairing the metal anticorrosion paint of corroded steel, comprises the following steps:

[0046] 1) In parts by mass, weigh 24 parts of acrylic acid, 12 parts of tannic acid, 8 parts of isopropanol and 2 parts of activator citric acid;

[0047] 2) Add ethanol, tannic acid and water into the reactor, mix and dissolve completely, add isopropanol, activator and water respectively, then add acrylic acid, film-forming aid, defoamer, and silicone oil , and vacuum bubbles, and continue to stir for 20min-30min to prepare the metal anti-corrosion coating.

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PUM

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Abstract

The invention discloses metal anticorrosive coating for repairing rusted steel. The coating includes, by mass, 20-24 parts of acrylic acid, 8-12 parts of tannic acid, 4-8 parts of isopropyl alcohol and 1-2 parts of an activating agent. The acrylic acid, the tannic acid and the isopropyl alcohol are adopted as main ingredients of the coating, rust is reduced into a rust-proof deactivated componentthrough composite organic acid groups of polymer, polymer micelles undergo molecular rearrangement on a metal matrix, a film is formed through oxidation, and the film has high sealing performance, high rust removal performance and high adhesive force, thus completely solving the problem of secondary rusting after rust removal and coating.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a metal anticorrosion coating used for repairing corroded steel. Background technique [0002] With the rapid development of modern industry, the anti-corrosion work of steel materials has attracted more and more attention from all aspects. In order to protect steel from corrosion and prolong its service life, anti-corrosion coating on steel is an economical and effective method. [0003] In order to obtain excellent corrosion resistance, the rust on the steel must be removed before painting, otherwise the corrosion effect of the paint film will be poor due to the continuous expansion of the rust. Therefore, rust removal of steel is an important process for painting. It plays a decisive role in the success or failure of anti-corrosion coating. The rust is divided into 3 layers vertically: surface layer floating rust Fe 2 o 3 , middle granular rust FeO n h 2 ...

Claims

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Application Information

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IPC IPC(8): C09D4/02C09D4/06C09D5/08
CPCC09D4/00C09D4/06C09D5/08
Inventor 陈时全
Owner 陈时全
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