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Conductive microcapsule, graphene conductive ink, preparation method and application thereof, graphene conductive film and self-repairing method of graphene conductive film

A conductive ink and graphene technology, which is applied in the direction of microcapsule preparation, microsphere preparation, ink, etc., can solve the problems of decreased electrical performance and short service life of conductive film

Active Publication Date: 2021-04-20
厦门捌斗新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the short service life of the conductive film formed by the existing graphene conductive ink and the defects that the electrical properties are prone to decline, and provide a conductive microcapsule and Graphene conductive ink and its preparation method and application, graphene conductive film and its self-healing method

Method used

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  • Conductive microcapsule, graphene conductive ink, preparation method and application thereof, graphene conductive film and self-repairing method of graphene conductive film
  • Conductive microcapsule, graphene conductive ink, preparation method and application thereof, graphene conductive film and self-repairing method of graphene conductive film
  • Conductive microcapsule, graphene conductive ink, preparation method and application thereof, graphene conductive film and self-repairing method of graphene conductive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Preparation of conductive microcapsules

[0039] S1. Mix 0.1 part of graphene with 1.5 parts of low-melting polyurethane pellets (melting point 50-60°C, the same below), feed them into an internal mixer and melt blend for 5 hours at 80°C to obtain graphene and low-melting point Composite materials of polyurethane;

[0040] S2. Add 1 part of melamine, 2 parts of formaldehyde and 20 parts of water into the reaction vessel, adjust the pH value of the solution to 8-9 with triethanolamine, and stir at 600r / min at a constant temperature of 70°C until the solution is transparent Obtain prepolymer solution;

[0041] S3. Add the composite material of graphene and low-melting polyurethane in step S1 and 0.1 part of PE-6200 into the reaction vessel, stir at a constant temperature of 70°C for 0.5h, then add 40 parts of water, and use an emulsifier at 15,000r / Stir and emulsify at min speed for 10 minutes to obtain a stable oil-in-water emulsion;

[0042] S4. Use acetic acid ...

Embodiment 2

[0047] (1) Preparation of conductive microcapsules: same as in Example 1.

[0048] (2) Preparation of graphene conductive ink: Add 2 parts of dispersant, 5 parts of graphene, and 0.3 part of defoamer to 48.7 parts of water in turn, mix and wet grind for 2 hours with a nano-sand mill to prepare a uniform graphene slurry The obtained graphene slurry and 3 parts of conductive microcapsules were sequentially added to 40 parts of water-based polyurethane resin, stirred and blended at a low speed of 600r / min for 10min, and then 1 part of thickener was added to adjust the viscosity of the system to 10,000-50,000cP. Filtration discharge obtains graphene conductive ink.

Embodiment 3

[0050] (1) Preparation of conductive microcapsules: same as in Example 1.

[0051] (2) Preparation of graphene conductive ink: Add 2 parts of dispersant, 5 parts of graphene, and 0.3 part of defoamer to 46.7 parts of water in turn and mix them with a nano-sand mill for 2 hours to prepare a uniform graphene slurry The obtained graphene slurry and 5 parts of conductive microcapsules were sequentially added to 40 parts of water-based polyurethane resin, stirred and blended at a low speed of 600r / min for 10min, and then 1 part of thickener was added to adjust the viscosity of the system to 10,000-50,000cP. Filtration discharge obtains graphene conductive ink.

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Abstract

The invention belongs to the technical field of new graphene materials and printing ink, and discloses a conductive microcapsule, graphene conductive printing ink, a preparation method and an application thereof, a graphene conductive film and a self-repairing method of the graphene conductive film. The graphene conductive ink is prepared from the following raw material components in percentage by mass: 30-60% of water-based resin, 2-20% of graphene, 1-5% of conductive microcapsules, 2-8% of a dispersing agent, 0.1-0.5% of a defoaming agent, 0.5-2% of a thickening agent and 30-55% of water, the conductive microcapsules take a composite material of graphene and low-melting-point polyurethane as a core material and take amino resin as a wall material; and the melting point of the low-melting-point polyurethane is 50-60 DEG C. The conductive microcapsule and the graphene conductive ink have good conductive self-repairing functions, can repair micro-cracks of a graphene conductive film, solve the problem that the electrical property of the graphene conductive film is reduced, prolong the service life of a material, and have great industrial application prospects.

Description

technical field [0001] The invention belongs to the technical field of new graphene materials and inks, and specifically discloses a conductive microcapsule, a graphene conductive ink, a preparation method and application thereof, a graphene conductive film and a self-repairing method thereof. Background technique [0002] As a key printing material, conductive ink plays a vital role in the manufacture of printed electronic products, and its development level is an important manifestation of the high technology of a country's printed electronic materials. In recent years, with the rapid development of new graphene materials and the high-speed industrialization of printing technology, the development of graphene conductive inks using graphene's excellent electrical conductivity, stable physical properties, non-toxic and environmental protection has become a research topic in the field of printing materials technology at home and abroad. hotspot. Graphene conductive ink has t...

Claims

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Application Information

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IPC IPC(8): C09D11/52C09D11/102C09D11/107B01J13/02
Inventor 许超王祥钟善钦洪一中
Owner 厦门捌斗新材料科技有限公司
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