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Graphene-based super conductive composite material and preparation method thereof

A conductive composite material and graphene technology, applied in the field of graphene-based super conductive composite materials and their preparation, can solve problems such as influence, graphene cannot be uniformly dispersed, etc., and achieve the effect of less ethanol residue

Pending Publication Date: 2022-01-04
深圳市华胜超级材料系统工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electrical conductivity of graphene / polymer composites largely depends on the degree of dispersion of graphene in the polymer matrix. The existing graphene / polymer composites affect their electrical conductivity because graphene cannot be uniformly dispersed. To this end, a graphene-based superconducting composite material and its preparation method are proposed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Step 1: Disperse 10 parts of powdered graphene in a 50% ethanol solution by mass fraction, add 5 parts of high-density polyethylene powder to the solution, heat the ethanol solution, and stir the ethanol solution at the same time, the heating temperature is 40°C, When the ethanol solution volatilizes more than half during the heating process, add 1 part of octadecylamine crystals, and continue stirring to dissolve it in the ethanol solution;

[0018] Step 2: Add 5 parts of polystyrene powder to step 1, stir and keep the temperature of the ethanol solution at 40°C, the ethanol solution continues to volatilize until the solution mixture is in a gel state, and stop heating;

[0019] Step 3: The gel prepared in step 2 is thermocompressed to obtain a graphene-based super conductive composite material.

[0020] Among them: the particle size of high-density polyethylene powder is 100 mesh, the particle size of polystyrene powder is 100 mesh, and the particle size of powdered g...

Embodiment 2

[0023] Step 1: Disperse 11 parts of powdered graphene in a 50% ethanol solution by mass fraction, add 6 parts of high-density polyethylene powder to the solution, heat the ethanol solution, and stir the ethanol solution at the same time, the heating temperature is 45 ° C, When the ethanol solution volatilizes more than half during the heating process, add 2 parts of octadecylamine crystals, and continue stirring to dissolve it in the ethanol solution;

[0024] Step 2: Add 6 parts of polystyrene powder to step 1, stir and keep the temperature of the ethanol solution at 45°C, the ethanol solution continues to volatilize until the solution mixture is in a gel state, and stop heating;

[0025] Step 3: The gel prepared in step 2 is thermocompressed to obtain a graphene-based super conductive composite material.

[0026] Among them: the particle size of high-density polyethylene powder is 100 mesh, the particle size of polystyrene powder is 100 mesh, and the particle size of powdere...

Embodiment 3

[0029] Step 1: Disperse 12 parts of powdered graphene in an ethanol solution with a mass fraction of 50%, add 7 parts of high-density polyethylene powder to the solution, heat the ethanol solution, and stir the ethanol solution at the same time, the heating temperature is 45 ° C, When the ethanol solution volatilizes more than half during the heating process, add 2 parts of octadecylamine crystals, and continue stirring to dissolve it in the ethanol solution;

[0030] Step 2: Add 7 parts of polystyrene powder to step 1, stir and keep the temperature of the ethanol solution at 45°C, the ethanol solution continues to volatilize until the solution mixture is in a gel state, and stop heating;

[0031] Step 3: The gel prepared in step 2 is thermocompressed to obtain a graphene-based super conductive composite material.

[0032] Among them: the particle size of high-density polyethylene powder is 100 mesh, the particle size of polystyrene powder is 100 mesh, and the particle size of...

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Abstract

The invention belongs to the technical field of graphene composite materials, and particularly relates to a graphene-based super conductive composite material which is prepared from the following raw materials in parts by weight: 10-20 parts of graphene, 5-10 parts of polyethylene, 5-10 parts of polystyrene and 1-3 parts of octadecylamine. Graphene and high-density polyethylene are blended in an ethanol solution, and in the blending process, ethanol continuously volatilizes, so that the surfaces of the high-density polyethylene particles are coated with the graphene. Then, the octadecylamine is added to modify the graphene to improve the affinity between the graphene and the polystyrene. Finally, the polystyrene is added, ethanol continuously volatilizes, and the prepared blending system has good conductivity and is easy to process. The graphene, the high-density polyethylene and the polystyrene are all in a powder state and are more suitable for blending, the mass fraction of the ethanol solution is chosen to be 50%-60%, the ethanol solution plays a role of a solvent, meanwhile, the final blending system has few ethanol residues, and the comprehensive performance of the composite material is not affected.

Description

technical field [0001] The invention relates to the technical field of graphene composite materials, and specifically relates to a graphene-based super conductive composite material and a preparation method thereof. Background technique [0002] Since the discovery of graphene, a complete carbon family system from zero-dimensional fullerene, one-dimensional carbon nanotube, two-dimensional graphene to three-dimensional diamond and graphite has been constructed. Graphene is made of sp 2 A two-dimensional honeycomb crystal in which hybridized carbon atoms are arranged in a close-packed manner, and its basic structural unit is a regular hexagonal lattice ring composed of 6 C atoms, in which each carbon atom is connected to the adjacent Three carbon atoms are connected, and the connection is very strong, so that graphene has extremely high structural stability. At the same time, each carbon atom contributes an unbonded π-electron to form a π-orbital in the vertical plane direc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L25/06C08K3/04C08K5/17
CPCC08L23/06C08L25/06C08K3/042C08K5/17
Inventor 李娟
Owner 深圳市华胜超级材料系统工程有限公司
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