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Inhibitor-loaded montmorillonite/epoxy self-healing coating

A technology of montmorillonite and corrosion inhibitor, which is applied in the field of montmorillonite/epoxy self-healing coatings to achieve the effects of simple process, improved corrosion resistance and easy operation

Active Publication Date: 2014-10-15
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Most published patents are only simple modification of montmorillonite, or simple intercalation of modified montmorillonite to epoxy resin, without endowing montmorillonite Desoil some other features

Method used

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  • Inhibitor-loaded montmorillonite/epoxy self-healing coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1.1) Mix montmorillonite and deionized water at a ratio of 1:80, and stir magnetically for 24 hours to obtain a montmorillonite solution; another mixture of octadecylamine and deionized water at a ratio of 1:25 adjusts the pH of the solution value to 3~4, after stirring for 30 minutes, slowly add it into the vigorously stirred montmorillonite solution, react at 80°C for 24 hours, and centrifugally filter;

[0032] (1.2) Mix montmorillonite with a mixed solvent (water: acetone = 1:1) at a ratio of 1:10, disperse at high speed and ultrasonically, then mix the corrosion inhibitor and modified montmorillonite at a mass ratio of 1:10 , evacuated for 5 hours, centrifuged and washed several times to obtain montmorillonite loaded with corrosion inhibitor.

Embodiment 2

[0041] (1) Add the loaded corrosion inhibitor montmorillonite obtained in Example 1 to the epoxy resin at a mass ratio of 3%, add additives and solvents at a mass ratio of 3.5% and 35.07%, and ball mill for 4 hours to obtain a loaded corrosion inhibitor Agent montmorillonite / epoxy coating component one.

[0042] (2) Mix the curing agent and the solvent at a ratio of 1:1, disperse at high speed for 15 minutes, and prepare the second component of the loaded corrosion inhibitor montmorillonite / epoxy coating. Component 1 and Component 2 were mixed in proportion, and then sprayed on the steel plate by spraying method, and dried for 7 days to obtain montmorillonite / epoxy coating loaded with corrosion inhibitor.

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Abstract

The invention provides an inhibitor-loaded montmorillonite / epoxy self-healing coating. The coating is prepared by the following steps: (1) dissolving montmorillonite with deionized water, and adding a blender subjected to acidizing treatment under fiercely stirring to obtain a modified montmorillonite; (2) dissolving the montmorillonite obtained in step (1) into a mixed solution of acetone and water, adding an inhibitor according to a certain rate to obtain an inhibitor-loaded montmorillonite; (3) adding the montmorillonite obtained in step (2) into epoxy resin, a mixed solvent, a dispersing agent, a flatting agent and the like to obtain an inhibitor-loaded montmorillonite / epoxy component I, then mixing the inhibitor-loaded montmorillonite / epoxy component I with an inhibitor-loaded montmorillonite / epoxy component II according to a certain rate to obtain the inhibitor-loaded montmorillonite coating. According to the invention, after the montmorillonite is subjected to loading, the distance between the two layers is increased, and the property of hydrophilicity of the montmorillonite is changed into lipophilicity, so that the compatibility of the montmorillonite with an organic phase is facilitated; the inhibitor-loaded montmorillonite / epoxy self-healing coating provided by the invention has excellent corrosion resistance.

Description

[0001] technical field [0002] The invention relates to a montmorillonite / epoxy self-repairing coating loaded with a corrosion inhibitor, which belongs to the technical field of chemical coatings. Background technique [0003] The ether bonds and hydroxyl groups contained in the molecular structure of epoxy resin are strong polar groups, which can make the epoxy resin molecule and various substrate surfaces, especially the strong adhesion between the metal surface At the same time, it also has good chemical resistance, especially excellent alkali resistance, toughness, hardness and softness, and is suitable for coating steel structures in severely corrosive environments such as marine and industrial areas. [0004] Montmorillonite is a silicate with a 2:1 layered structure. Each crystal layer is composed of two layers of silicon-oxygen tetrahedrons sandwiched with a layer of aluminum-oxygen octahedrons, and the tetrahedrons and octahedrons are shared by Linked by oxyge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09C1/42C09C3/08
Inventor 邓静伟朱辉江波贾蕗路刘明明刘福春韩恩厚
Owner STATE GRID CORP OF CHINA
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