Preparation method of self-repairing conductive coating

A conductive coating and self-repairing technology, which is applied in the direction of conductive coatings, coatings, and devices for coating liquid on the surface, to achieve the effects of low cost, high conductivity, and simple conditions

Inactive Publication Date: 2012-08-15
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on fabricating self-healing materials with high electrical conductivity is still in its infancy despite its self-evident importance.

Method used

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  • Preparation method of self-repairing conductive coating
  • Preparation method of self-repairing conductive coating
  • Preparation method of self-repairing conductive coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Treatment of the substrate:

[0029] Wash the PET plastic sheet with ethanol and water and dry it for later use.

[0030] (2) Preparation of solution:

[0031] Dissolve 2g of polyacrylic acid (molecular weight: 100,000) and 1g of sodium polystyrene sulfonate (molecular weight: 70,000) in 100mL of deionized water, and dissolve evenly before use. Then, 3 g of polydimethyldiallylamine hydrochloride was dissolved in 100 mL of deionized water, and the solution was uniformly dissolved before use.

[0032] (3) Preparation of polymer coating:

[0033] Alternately immerse the substrate treated in step 1 in the two solutions prepared in step 2 for 10 minutes each, take out the substrate after each immersion and rinse it with deionized water to complete a cycle of layer-by-layer assembly membrane preparation; repeat the above The process is 50 cycles, so that a polymer coating capable of repairing surface scratches under the stimulation of external conditions is prepared on...

Embodiment 2

[0039] (1) Treatment of the substrate:

[0040] Wash the PET plastic sheet with ethanol and water and dry it for later use;

[0041] (2) Preparation of solution:

[0042] Dissolve 1g of sodium polyacrylate (molecular weight: 450,000) and 7g of sodium hyaluronate (molecular weight: 800,000) in 100mL of deionized water, dissolve evenly and set aside. Then dissolve 6g of polyethyleneimine in 100mL of deionized water, dissolve evenly and set aside.

[0043] (3) Preparation of polymer coating:

[0044] Alternately immerse the substrate treated in step 1 in the two solutions prepared in step 2 for 10 minutes each, take out the substrate after each immersion and rinse it with deionized water to complete a cycle of layer-by-layer assembly membrane preparation; repeat the above The process is 30 cycles, so that a polymer coating capable of repairing surface scratches under the stimulation of external conditions is prepared on the substrate by layer-by-layer assembly technology, and th...

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Abstract

The invention belongs to the technical field of preparation of a self-repairing coating, and particularly relates to a method for preparing a conductive coating with a self-repairing ability on a glass, quartz or plastic base in an arbitrary shape. The method comprises the steps of processing the base, preparing a coating solution, preparing a polymer coating, preparing a conductive layer and the like. The method disclosed by the invention is not limited by size and shape of the base, and is suitable for the base with a plane, a curve surface or an irregular surface. The prepared conductive coating has good flexibility and electrical conductivity and can repair scratches on the surface and damaged electrical conductivity under excitation of a solvent. The repairing process is fast; over 95% of the scratches can be repaired with excellent restoring effect, and the repairing process can be repeated for a plurality of times. The prepared conductive self-repairing coating has a plurality of potential applications, for example, the self-repairing coating is applied to a lead, a circuit and the like to increase the use stability of an electronic apparatus.

Description

technical field [0001] The invention belongs to the technical field of preparation of self-repairing coatings, in particular to a method for preparing conductive coatings with self-repairing ability on substrates of arbitrary shapes such as glass, quartz and plastics. Background technique [0002] During actual use, tiny cracks will appear on the surface or inside of artificial materials due to aging or exceeding the load, and these cracks will gradually expand with the prolongation of use time, eventually leading to damage to the entire material. In electronic instruments, this phenomenon is fatal. Cracks in wires or electronic components due to overtime use or impact by external forces will cause circuit breaks or component failures, and eventually cause the entire electronic instrument to fail to work properly. Often, it is almost impossible to repair electronic components that fail due to cracks, and the only solution is to replace or sometimes even replace the entire c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/38B05D1/18B05D1/02B05D3/10C09D133/02C09D105/08C09D125/18C09D139/02C09D5/24
Inventor 孙俊奇李洋
Owner JILIN UNIV
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