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Self-corrosion potential response type self-repairing anti-corrosion coating, preparation method and application

A technology of self-corrosion potential and anti-corrosion coating, which is applied in the direction of anti-corrosion coatings, coatings, epoxy resin coatings, etc., to achieve the effects of high sensitivity, not easy to fall off, and strong adhesion

Active Publication Date: 2016-09-07
JIANGSU GUGELANSHAN PROTECTIVE FACILITIES CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, coatings that can respond to metal self-corrosion potential can complete the self-healing process faster. However, the research on materials that respond to self-corrosion potential is still in the blank stage. This material has great potential in the field of corrosion protection applications.

Method used

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  • Self-corrosion potential response type self-repairing anti-corrosion coating, preparation method and application
  • Self-corrosion potential response type self-repairing anti-corrosion coating, preparation method and application
  • Self-corrosion potential response type self-repairing anti-corrosion coating, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1. Preparation of epoxy-silane composite coating substrate

[0040] Dissolve 3g of 3-aminopropyltriethoxysilane in 12.7mL of ethanol, dissolve 34.9g of epichlorohydrin-propanediol copolymerized epoxy resin in 40 mL of acetone, mix the two solutions evenly and add 3.8 g of triethylenetetramine were stirred.

[0041] 2. Preparation of mesoporous silica nanocontainers

[0042] Disperse 0.5 g of cetyltrimethylammonium bromide (CTAB) in 240 mL of deionized water, then add 1.75 mL of 2 mol / L sodium hydroxide solution, and keep warm at 80°C for half an hour. 2.5 mL tetraethyl orthosilicate (TEOS) was added dropwise to the reaction system at a rotational speed of 700 rpm, and reacted for 2 h. After the reaction was completed, it was filtered while it was hot, the product was fully washed with hot water, and vacuum-dried at 80°C.

[0043] Weigh 200 mg of the dried solid product, grind it thoroughly, add a mixed solution of 50 mL of methanol and 3 mL of concentrated hydrochloric...

Embodiment 2

[0051] 1. Preparation of epoxy-silane composite coating substrate

[0052] Dissolve 1.5 g of tetraethyl orthosilicate in 6.3 mL of ethanol solution, dissolve 17.5 g of epichlorohydrin-propanediol copolymerized epoxy resin in 20 mL of acetone, mix the two solutions with ethyl ester, and then add Add 1.9 g of diethyltriamine and stir well.

[0053] 2. Preparation of mesoporous silica nanocontainers

[0054] Disperse 0.5 g of cetyltrimethylammonium bromide (CTAB) in 240 mL of deionized water, then add 1.75 mL of 2 mol / L sodium hydroxide solution, and keep warm at 80°C for half an hour. 2.5 mL tetraethyl orthosilicate (TEOS) was added dropwise to the reaction system at a rotational speed of 700 rpm, and reacted for 2 hours. After the reaction was completed, it was filtered while it was hot, the product was fully washed with hot water, and vacuum-dried at 80°C.

[0055] Weigh 200 mg of the dried solid product, grind it thoroughly, add a mixed solution of 50 mL of methanol and 3 ...

Embodiment 3

[0067] 1. Preparation of epoxy-silane composite coating substrate

[0068] Dissolve 0.75 g of tetraethyl orthosilicate and 0.75 g of 3-glycidyl ether propyl trimethoxysilane in 6.3 mL of ethanol solution, and dissolve 17.5 g of epichlorohydrin-propanediol copolymerized epoxy resin in 20 mL of acetone In, the ethyl esters of these two solutions were mixed, and then 1.9 g of diethyltriamine was added thereto, and stirred evenly.

[0069] 2. Preparation of mesoporous silica nanocontainers

[0070] Disperse 0.5 g of cetyltrimethylammonium bromide (CTAB) in 240 mL of deionized water, then add 1.75 mL of 2 mol / L sodium hydroxide solution, and keep warm at 80°C for half an hour. 2.5 mL tetraethyl orthosilicate (TEOS) was added dropwise to the reaction system at a rotational speed of 700 rpm, and reacted for 2 h. After the reaction was completed, it was filtered while it was hot, the product was fully washed with hot water, and vacuum-dried at 80°C.

[0071]Weigh 200mg of the dried...

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Abstract

The invention discloses a self-corrosion potential response type self-repairing anti-corrosion coating and belongs to the field of the metal anti-corrosion technology. The self-corrosion potential response type self-repairing anti-corrosion coating is composed of an epoxy-silane composite coating and a mesoporous silica nano-container doped in the epoxy-silane composite coating. The preparation process includes the steps that an epoxy-silane composite coating substrate is prepared; the mesoporous silica nano-container is prepared; the mesoporous silica nano-container is dispersed in the epoxy-silane composite coating and then attached to the surface of a basic material, and the self-corrosion potential response type self-repairing anti-corrosion coating is formed after high-temperature drying. The self-corrosion potential response type self-repairing anti-corrosion coating is high in sensitivity and short in response time, microcell corrosion on the surface of metal can be actively and rapidly detected, corrosion inhibitor molecules are released and adsorbed on the surfaces of corrosion microcells to generate a self-repairing effect, and good application prospects are achieved in the metal anti-corrosion technology. The invention further discloses a preparation method and application of the self-corrosion potential response type self-repairing anti-corrosion coating.

Description

technical field [0001] The anticorrosion coating and its preparation method of the present invention, specifically a self-corrosion potential responsive self-repairing anticorrosion coating, its preparation method and application, belong to the technical field of metal anticorrosion. Background technique [0002] Currently, metal corrosion is one of the single events with the greatest impact on the national economy. Metal corrosion is always threatening the safety of human life and property, and it is imminent to design and develop effective corrosion protection technology. Among the many metal materials used in industrial production, light alloy materials represented by magnesium alloys are widely used in various engineering equipment due to their advantages such as low density, high specific strength, and excellent processing performance. However, due to the low thermodynamic stability and active chemical properties of magnesium alloys, magnesium alloy materials are very ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/12
CPCC09D4/06C09D5/08
Inventor 傅佳骏朱发海丁晨迪朱青泽
Owner JIANGSU GUGELANSHAN PROTECTIVE FACILITIES CO LTD
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