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Graphene composite material and preparation method thereof

A composite material, graphene technology, applied in cable/conductor manufacturing, conductive layer on insulating carrier, electrical components, etc., can solve the problem of sacrificing the overall film light transmittance, reducing square resistance, graphene scratch resistance and ultrasonic cleaning. Problems that have not been greatly improved

Active Publication Date: 2019-01-15
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The conductive polymer composite material provided by this patent can significantly reduce the square resistance of graphene after transfer, and has good stability. The attenuation of the square resistance of graphene for a long time is also very small, but this patent is excellent in graphene scratch resistance and ultrasonic resistance. Cleaning and other aspects have not been greatly improved, and the light transmittance of the overall film has been sacrificed to a certain extent

Method used

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  • Graphene composite material and preparation method thereof
  • Graphene composite material and preparation method thereof
  • Graphene composite material and preparation method thereof

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preparation example Construction

[0025] The application also provides a kind of preparation method of graphene composite material, comprises the following steps:

[0026] Mix the conductive substance with the resin precursor to obtain a mixture;

[0027] The mixture is coated on the surface of the graphene composited on the surface of the substrate, and then cured to obtain a graphene composite material.

[0028] In the process of preparing the graphene composite material, the applicant firstly mixes the conductive substance and the resin precursor, the mixture of the conductive substance and the resin precursor. In order to uniformly mix the conductive substance and the resin precursor, the present application preferably adopts ultrasonic treatment to uniformly mix the conductive substance and the resin precursor. The time of the ultrasonic treatment is preferably 1 s-24 h, more preferably 10 min-60 min.

[0029] After the mixture of the conductive substance and the resin precursor is obtained, the mixture...

Embodiment 1

[0033] 1) ultrasonically treat the adhesive and ITO powder, so that the oxide conductive particles are evenly distributed in the adhesive; the ratio of conductive particles to precursor is 0.1g / ml;

[0034] 2) The target product obtained in step 1) is coated on the surface of the graphene to be protected by spin coating; the graphene is prepared on the PET surface by CVD; after drying for 3h, a vertically conductive graphite is formed on the graphene surface Oxygen protective film, the protective film has ultra-high transparency and strong weather resistance.

[0035] The graphene with protective film prepared in this embodiment is compared with the graphene without protective film, and the relevant data are shown in Table 1.

[0036] Table 1 present embodiment has the performance contrast data table of protective film and graphene without protective film

[0037]

Embodiment 2

[0039] 1) Ultrasonic treatment of Loctite UV photocurable adhesive and Ag nanowires, so that the metal conductive particles are evenly distributed in the adhesive; the ratio of conductive particles to precursor is 0.2g / ml;

[0040] 2) The target product obtained in step 1) is sprayed on the surface of graphene to be protected; graphene is prepared on the PET surface by epitaxy; at a total energy of 1000mJ / cm 2 After UV curing to form a film, a vertically conductive graphene protective film will be formed on the graphene surface. The protective film has ultra-high transparency and strong weather resistance.

[0041] The properties of the graphene with and without the protective film were compared and tested, and the relevant data are shown in Table 2.

[0042] Table 2 present embodiment has protective film and the performance contrast data table of the graphene that does not have protective film

[0043]

[0044]

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Abstract

The invention provides a graphene composite material which comprises a substrate, a graphene layer and a protecting film layer, wherein the graphene layer is compounded on the substrate; the protecting film layer is compounded on the graphene layer; the protecting film layer consists of precursor resin and conductive substances. As the protecting film layer consisting of precursor resin and the conductive substances is compounded on the surface of the graphene, due to addition of the precursor resin, the protecting film layer is good in scratching resistance and light permeability because of the precursor resin, and due to addition of the conductive substances, electricity can be conducted in the direction perpendicular to the protecting film through the protecting film, so that the protecting film is good in light permeability and scratching resistance and can conduct electricity in the direction perpendicular to the protecting film. The invention further provides a preparation method of the graphene composite material.

Description

technical field [0001] The invention relates to the technical field of graphene, in particular to a graphene composite material and a preparation method thereof. Background technique [0002] Graphene is a new material with a single-layer sheet structure composed of carbon atoms. It is a planar film with a hexagonal honeycomb lattice composed of carbon atoms and sp2 hybrid orbitals. It is only two carbon atoms thick. dimensional material. Graphene has high thermal conductivity, electron mobility and low resistivity, so graphene is expected to achieve great development in the fields of energy, materials, electronics and biomedicine. [0003] At present, graphene films prepared by various growth processes have poor surface scratch resistance and ultrasonic cleaning resistance. Therefore, it is impossible to efficiently produce and apply graphene transparent conductive films in various electronic industries in the industry. The Chinese patent application number 201410170163.4...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/14H01B13/00
Inventor 许林峰汪伟刘兆平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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