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Preparation method of self-repairing material and self-repairing film layer on surface of matrix

A self-healing material and film technology, applied in coatings, anti-corrosion coatings, etc., can solve problems such as damage and loss of protection performance, achieve the effects of wide sources, improve corrosion protection performance, and solve external stimulus responsiveness

Inactive Publication Date: 2020-12-25
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional methods of protecting active metals mainly include chemical modification, organic coatings, and organic / polymer film coatings, etc., but most of them are prone to various damages under external influences, resulting in the loss of their original properties during service. protection performance, so self-healing coating technology came into being

Method used

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  • Preparation method of self-repairing material and self-repairing film layer on surface of matrix
  • Preparation method of self-repairing material and self-repairing film layer on surface of matrix
  • Preparation method of self-repairing material and self-repairing film layer on surface of matrix

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023]Choose nano-scale nanotubes (carbon nanotubes), the scanning electron microscope photos are asfigure 1 As shown, it can be seen that the carbon nanotubes are distributed in nano-scale bundles.

[0024]Disperse the nanoscale carbon nanotubes into silicone oil, stir at 25°C for 25 minutes, and then ultrasonically disperse at 60°C for 60 minutes. During the ultrasonic process, vacuum is applied to remove the air at the interface between carbon nanotubes and silicone oil to obtain a mixed material. The solid-phase nanotubes in the material are uniformly dispersed in the liquid phase without agglomeration. The TEM photo of the mixed material is asfigure 2 As shown, it is explained that the solid-phase carbon nanotubes form a cross-linked network structure in the liquid phase after simple dispersion.

[0025]The above-mentioned mixed material is coated on a metal substrate to form a film layer. Then likeimage 3 As shown in the figure (a), the film is scratched to form a scratch, even if t...

Embodiment 2

[0033]Disperse micro-nano fibers (glass fibers) into the liquid-phase material silicone resin, stir at 15°C for 50 minutes, and then ultrasonically vibrate at 60°C for 45 minutes. During the ultrasonic process, vacuum remove the glass fiber and silicone resin interface. Air is used to obtain a mixed material in which solid phase particles are uniformly dispersed in the liquid phase without agglomeration. The transmission electron micrograph of the mixed material shows that the solid phase particles form an interleaved cross-linked structure in the liquid phase after dispersion.

[0034]The above-mentioned mixed material is coated on a metal substrate to form a film layer. Then, the film is scratched to form a scratch. Even if the width of the scratch reaches the millimeter level, the scratch has been basically repaired after 5 seconds, indicating that the film has rapid self-healing ability.

[0035]Similar to Example 1, the film layer prepared above was immersed in 1mol / L salt water for ...

Embodiment 3

[0037]Disperse the micro / nanorods (clay attapulgite) into the liquid phase material silane, stir at 30°C for 40 minutes, and then ultrasonically vibrate at 45°C for 65 minutes. During the ultrasonic process, vacuum is applied to remove the air at the interface between the clay attapulgite and silane. A mixed material is obtained in which the solid phase particles are uniformly dispersed in the liquid phase without agglomeration. The transmission electron micrograph of the mixed material shows that the solid phase particles form a cross-linked labyrinth structure in the liquid phase after dispersion.

[0038]The above-mentioned mixed material is coated on a metal substrate to form a film layer. Then, the film is scratched to form a scratch. Even if the width of the scratch reaches the millimeter level, after about 7 seconds, the scratch has been basically repaired, indicating that the film has rapid self-healing ability.

[0039]Similar to Example 1, the film layer prepared above was immer...

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Abstract

The invention discloses a preparation method of a self-repairing material. According to the method, a solid-phase linear, rod-shaped or tubular micro-nano material is dispersed into a liquid-phase material to obtain a mixed material containing the solid phase and the liquid phase, the mixed material has certain fluidity, and when the mixed material is damaged due to external influence, the mixed material has active and rapid self-repairing capability; and the mixed material has good stability and corrosion protection performance. A film layer formed on the surface of a matrix by using the mixed material has self-repairing capability and good corrosion protection performance.

Description

Technical field[0001]The invention relates to the field of self-healing coatings, in particular to a preparation method of a self-healing material and a self-healing film layer on the surface of a substrate.Background technique[0002]Traditional methods of protecting active metals mainly include chemical modification, organic coatings and organic / polymer film coating, etc. However, most of them are prone to various damages under external action, resulting in the loss of their originality during service. The protective performance of the self-healing coating technology came into being.[0003]With the ultra-fast development of modern science and technology, especially the development of smart material technology, higher requirements are put forward for the preparation of coating materials, and the development of smart self-healing materials has become an inevitable trend. The current intelligent self-healing material technology mainly focuses on the intrinsic self-healing materials repa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D5/08C09D7/61
CPCC09D5/08C09D183/04C09D7/61C09D7/70C08K3/041C08K7/14C08K3/346
Inventor 赵文杰吴英豪王立平薛群基
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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