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Graphene conductive coating material, preparation method therefor and application of graphene conductive coating material

A technology of graphene and graphene dispersant, which is applied in the field of material science, can solve the problems of poor dispersion and limit the application of graphene, and achieve the effect of easy process control, simple process and wide application prospect

Active Publication Date: 2016-07-20
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

However, since graphene is neither hydrophilic nor lipophilic, and its chemical reaction is inert, the sheets are easy to pile up due to their strong interaction, resulting in poor dispersion in solvents or polymer resins, which greatly limits Application of graphene in coatings and other fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Take 0.025g of aniline trimer carboxyl derivatives, 0.005g of NaOH, 3mL of deionized water, 0.025g of graphene, ultrasonically disperse, then add 0.735g of water-based polyurethane (solid content 34wt%), coating, 60 ° C Under curing, obtain the polyurethane conductive coating that contains graphene 5%. The conductivity of the film was measured to be 403 ohm / sq.

Embodiment 2

[0034] Example 2: 0.025g of carboxyl derivatives of aniline trimer, 0.005g of NaOH, 3mL of deionized water, 0.025g of graphene, ultrasonic dispersion, and then add 1.47g of water-based polyurethane (solid content 34wt%), coating film, at 60°C Curing, obtains the polyurethane conductive coating that contains graphene 10%. The conductivity of the film was measured to be 362 ohm / sq.

Embodiment 3

[0035] Example 3: 0.025g of water-based sulfonated polyaniline, 3mL of deionized water, 0.025g of graphene, ultrasonic dispersion, then add 0.735g of water-based polyurethane (solid content 34wt%), coating, curing at 60 ° C, to obtain graphene-containing 10% polyurethane conductive coating. The conductivity of the film was measured to be 845 ohm / sq.

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PUM

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Abstract

The invention discloses a graphene conductive composite coating material. The graphene conductive composite coating material contains macromolecular film-forming resin, graphene and a graphene dispersant; and the graphene dispersant contains an aniline oligomer or a derivative thereof or soluble polyaniline which can be combined with the graphene through PI-PI interaction so as to enable the graphene to be uniformly and stably dispersed in the macromolecular film-forming resin or a mixture of the macromolecular film-forming resin and water and / or an organic solvent. The invention also discloses a preparation method for the coating material. According to the coating material disclosed by the invention, the graphene can be uniformly and stably dispersed in a coating material matrix, so that the application of the coating material in the aspects of conductive macromolecular coatings and the like can be greatly promoted; the preparation process is simple, does not need complex chemical reactions and is easy to control, and the coatings made from the coating material have good bonding capability on surfaces of macromolecular materials, metallic materials, textile materials and ceramic materials; and meanwhile, the coating material also has the characteristics of radiation resistance, electrostatic resistance, corrosion prevention, wave absorbing, wear resistance and the like, thereby being broad in application prospect.

Description

technical field [0001] The invention particularly relates to a graphene-based conductive paint, its preparation method and application, and belongs to the field of material science. Background technique [0002] Conductive coating refers to the conductivity greater than 10 -12 S / m, a new type of functional coating with semiconductor or conductor properties, conductive coating has the characteristics of eliminating static electricity, anti-electromagnetic shielding and anti-corrosion, and can be widely used in petrochemical, aerospace, electronic communication, construction and military industries. Traditional conductive coatings are mainly blended coatings, which are composed of conductive additives such as graphite, carbon black, metal powder or metal oxide, and polymer film-forming substances. Due to the difference in the structure of the filler and the film-forming material in the conductive coating, the compatibility between them is poor, and the distribution of the fil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D179/02C09D5/24C09D5/08C09D7/12
Inventor 余海斌马骏赵海超顾林刘栓戴雷丁纪恒
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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