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Graphene composite foam film and preparation method thereof

A technology of graphene foam and graphene composite, which is applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems that affect graphene composite and no longer communicate with each other, so as to achieve rich pores, uniform mutual integration, and guarantee The effect of mechanical properties

Active Publication Date: 2021-05-28
CHANGZHOU FUXI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the graphene foam film prepared by this method, the internal pores are only connected in the plane direction, but closed in the thickness direction, and are no longer connected to each other, which will seriously affect the composite of graphene and other materials.

Method used

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  • Graphene composite foam film and preparation method thereof
  • Graphene composite foam film and preparation method thereof
  • Graphene composite foam film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066]In this embodiment, the graphene foam film accounted for 40 wt.%, And the polymer polymer accounted for 60 wt.%;

[0067]The thermal conductivity of the graphene foam film 50W / (m k);

[0068]Gallene foam film thickness 50 μm, density 0.1 g / cm3;

[0069]The inner pore pore diameter of the graphene foam membrane is 10 μm, and a laser punch is used to penetrate 50 μm, and the center spacing of 300 μm through the hole is 300 μm;

[0070]Liquid silica gel is a polymethylcycloysiloxane, which is diluted to a viscosity of 1000 MPa · s using heptane.

[0071]Curing by normal temperature constant pressure conditions;

[0072]After testing, get the following test results:

[0073]

Embodiment 2

[0075]In this embodiment, the graphene foam film accounted for 95 wt.%, The organic polymer polymer accounted for 5 wt.%;

[0076]The thermal conductivity of the graphene foam film is 530w / (m k);

[0077]Graphitene foam film thickness 1000 μm, density 0.9 g / cm3;

[0078]The inner pore pore diameter of the graphene foam membrane is 100 μm, and the hole is 500 μm, and the center spacing of 1000 μm in the center of the hole is performed.

[0079]Liquid silica gel is polydimethylsiloxane, which is diluted with hexane to viscosity 30 MPa · S;

[0080]Curing by 150 ° C is carried out;

[0081]After testing, get the following test results:

[0082]

Embodiment 3

[0084]In this embodiment, the graphene foam film accounted for 75 wt.%, And the polymer polymer accounted for 25 wt.%;

[0085]The thermal conductivity of the graphene foam film is 120 W / (m k);

[0086]Graphite foam film thickness 300 μm, density 0.2g / cm3;

[0087]The inner pore pore diameter of the graphene foam membrane is 15 μm, and the acupuncture method is connected to 100 μm, and the center spacing of 400 μm is formed through the center of the hole;

[0088]Liquid silica gel is α, ω-dihydroxy polyimethylsiloxane, diluted with tetrahydrofuran to a viscosity of 100 MPa · S;

[0089]Curing by 120 ° C is carried out;

[0090]After testing, get the following test results:

[0091]

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Abstract

The invention discloses a graphene composite foam film. The graphene composite foamfilm comprises a graphene foam film and a high-molecular polymer, the graphene foam film is provided with pores, the high-molecular polymer is distributed in the pores and on the surface of the graphene foam film, and the graphene foam film accounts for 40-95 wt% of the total weight of the graphene composite foam film.

Description

Technical field[0001]The present invention relates to the field of graphene film materials, and more particularly to a graphene foam film.Background technique[0002]The graphene foam membrane is an internal foam-like graphene film structure material (CN109694055A, CN110357076A), has a wide range of application prospects in thermal heat dissipation, electromagnetic shielding, composite material enhancement, phase change material packages, etc.[0003]For anisotropic high-conductive graphene foam membrane, it is mainly obtained by applying film formation by an oxide in graphene slurry, and the heat treatment removes the small molecule. Since the graphene foam film prepared by the coating method has a significant layered structure, there is a high thermal conductivity in the plane (eg CN109694055A).[0004]However, the obtained graphene foam film is prepared, and the inner pore is only in the planar direction, and in a closed state in the thickness direction, it is no longer connected to ea...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08L83/08C08L63/00C08L61/06C08L61/00C08L75/04C08L33/04C08K7/24C08J5/18C01B32/194
CPCC08J5/18C01B32/194C08J2383/04C08J2383/08C08J2363/00C08J2361/06C08J2361/00C08J2375/04C08J2333/04C08K7/24
Inventor 葛翔李峰李壮石燕军周步存
Owner CHANGZHOU FUXI TECH CO LTD
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