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Self-repairing composite coating, application of self-repairing composite coating, anticorrosion material and preparation method of anticorrosion material

A composite coating and self-healing technology, applied in chemical materials and application fields, can solve the problems of corrosion inhibitors not being released quickly, not forming a protective film, not being able to inhibit corrosion, etc., achieving excellent biocompatibility, easy molding, and processing short time effect

Active Publication Date: 2019-08-20
UNIVERSITY OF CHINESE ACADEMY OF SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the self-healing anti-corrosion coating can only realize self-healing in acidic environment, and cannot provide corresponding acid in other environments, and the corrosion inhibitor loaded on it cannot be released quickly, cannot form a protective film, and cannot inhibit corrosion

Method used

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  • Self-repairing composite coating, application of self-repairing composite coating, anticorrosion material and preparation method of anticorrosion material
  • Self-repairing composite coating, application of self-repairing composite coating, anticorrosion material and preparation method of anticorrosion material
  • Self-repairing composite coating, application of self-repairing composite coating, anticorrosion material and preparation method of anticorrosion material

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Effect test

no. 1 approach

[0061] The first embodiment of the present invention provides a self-healing composite coating 4 and the application of the self-healing composite coating 4 in anti-corrosion. Such as figure 1 As shown, the self-healing composite coating 4 of the present invention includes: a hydrophobic layer 2 and a hydrophilic layer 3 in contact, wherein

[0062] The hydrophobic layer 2 comprises a hydrophobic substance;

[0063] The hydrophilic layer 3 includes a self-healing layer 31, and the self-healing layer 31 contains a hydrophilic substance A, and the hydrophilic substance A contains one or a combination of two or more dynamic covalent bonds.

[0064] In a specific embodiment, such as figure 2 As shown, the hydrophilic layer 3 also includes a transition layer 32 in contact with the self-healing layer 31, wherein the transition layer 32 exists between the self-healing layer 31 and the hydrophobic layer 2, or The transition layer 32 exists on the side of the self-healing layer 31...

no. 2 approach

[0089] A second embodiment of the present invention provides an anti-corrosion material. The anti-corrosion material includes a substrate 1 and a self-repairing composite coating 4 formed on the surface of the substrate 1; the self-repairing composite coating 4 is the self-repairing composite coating 4 in the first embodiment.

[0090]Generally speaking, in the present invention, the self-repairing composite coating 4 can be directly formed on the surface of the substrate 1, thereby playing the role of corrosion protection and self-repairing; the present invention can also prepare the self-repairing composite coating 4 in advance, and then Then it is arranged on the surface of the base body 1 to play the role of anti-corrosion.

[0091]

[0092] In the present invention, the self-healing composite coating 4 can be formed on the surface of the substrate 1, wherein the substrate 1 includes one or a combination of two or more of metal, ceramics, plastics and glass, wherein the ...

no. 3 approach

[0098] The third embodiment of the present invention provides a method for preparing an anti-corrosion material, comprising the following steps:

[0099] Prepare the self-healing layer material by taking the hydrophilic substance A;

[0100] Prepare hydrophobic material by taking hydrophobic substance;

[0101] making the self-healing layer material and the hydrophobic material alternately form a hydrophilic layer 1 and a hydrophobic layer 2 on the surface of the substrate 1, the hydrophilic layer comprising a self-healing layer 31;

[0102] In the present invention, the hydrophobic layer 2 may be in contact with the surface of the substrate 1, and the hydrophilic layer 3 is formed on the opposite side of the hydrophobic layer 2 to the substrate 1; or the The hydrophilic layer 3 is in contact with the surface of the substrate 1 , and the hydrophobic layer 2 is formed on the side of the hydrophilic layer 3 opposite to the substrate 1 . Preferably, the hydrophobic layer 2 is b...

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Abstract

The invention provides a self-repairing composite coating, application of the self-repairing composite coating, an anticorrosion material and a preparation method of the anticorrosion material. The self-repairing composite coating comprises a hydrophobic layer and a hydrophilic layer, wherein the hydrophobic layer and the hydrophilic layer make contact with each other. The hydrophobic layer comprises hydrophobic matter. The hydrophilic layer comprises a self-repairing layer. The self-repairing layer comprises hydrophilic matter A. the hydrophilic matter A comprises at least one type of dynamiccovalent bonds. Compared with the prior art, the self-repairing composite coating, application of the self-repairing composite coating, the anticorrosion material and the preparation method of the anticorrosion material have the advantages that the self-repairing composite coating can be applied to the field of corrosion resistance, do not allow liquid to permeate, and can automatic repair the defects of the coating in the preparation process and the using process, and then the anticorrosion effect can be effectively achieved; and furthermore, according to the self-repairing composite coating, the situation that a substrate is corroded because liquid enters the composite coating and makes contact with the substrate is avoided, the defects of the coating can be automatically repaired in the preparation process and the using process, and the self-repairing composite coating has the excellent biocompatibility.

Description

technical field [0001] The invention relates to the technical field of chemical materials and applications, in particular to a self-repairing composite coating and its application, an anti-corrosion material and its preparation method. Background technique [0002] Many materials in daily life (such as metals, plastics, etc.) are prone to corrosion under the action of the external environment and bring huge losses to the national economy. For the anti-corrosion research of metals, various technologies such as chemical conversion layer, micro-arc oxidation, anodic oxidation, and electroplating are used to coat organic, inorganic or polymer coatings on the metal surface, and then isolate the metal from the corrosive medium to achieve anti-corrosion the goal of. [0003] Although the above method has played a protective effect on the metal to a certain extent, there are still many problems in actual use, such as the inevitable microporous defects in the coating during the prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/00B05D7/00C09D5/08
CPCB05D5/00B05D7/54C09D5/08
Inventor 王彩旗崔含蕊
Owner UNIVERSITY OF CHINESE ACADEMY OF SCIENCES
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