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Graphene-base heat-conduction composite material as well as preparation method and application of composite material

A heat-conducting composite material and graphene-based technology, which is applied in the direction of heat exchange materials, chemical instruments and methods, can solve the problems of low graphene output and high cost, and achieve high cost, poor thermal conductivity and improved thermal conductivity Effect

Active Publication Date: 2018-03-20
江阴精醇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

Graphene obtained by physical methods or chemical vapor deposition methods is not only low in yield, but also very expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Preparation of graphene oxide

[0024] Take 10 grams of graphite, disperse it in 200 milliliters of concentrated sulfuric acid, lower the temperature to 0 degrees, add 1.5 grams of potassium permanganate under stirring condition, after stirring for 30 minutes, add 30 grams of potassium permanganate, heat up to 40 degrees to react 2 Hours later, a viscous sample was obtained, and water was slowly added dropwise, followed by 30 milliliters of 30% hydrogen peroxide, filtered to obtain a graphene oxide filter cake, washed with hydrochloric acid, washed with water, and finally dispersed in 10 liters of water for subsequent use;

[0025] (2) Preparation of copper nanoparticles

[0026] Dissolve 17g of green copper dihydrate in 1000ml of ethylene glycol, add 30g of PVP to dissolve in the solution, add dropwise 0.5M NaOH ethylene glycol solution, adjust the pH>10, stir for 30min, and raise the temperature under the protection of nitrogen To 160 degrees, after heating for 3...

Embodiment 2

[0030] (1) Preparation of graphene oxide

[0031] Take 10 grams of graphite, disperse it in 200 milliliters of concentrated sulfuric acid, lower the temperature to 0 degrees, add 1.5 grams of potassium permanganate under stirring condition, after stirring for 30 minutes, add 30 grams of potassium permanganate, heat up to 40 degrees to react 2 Hours later, a viscous sample was obtained, and water was slowly added dropwise, followed by 30 milliliters of 30% hydrogen peroxide, filtered to obtain a graphene oxide filter cake, washed with hydrochloric acid, washed with water, and finally dispersed in 10 liters of water for subsequent use;

[0032] (2) Preparation of copper nanoparticles

[0033] Take 17g green copper dihydrate and dissolve in 1000ml ethylene glycol, add 20g PVP to dissolve in the solution at the same time, add 0.5M NaOH ethylene glycol solution dropwise, adjust pH>10, stir for 30min, under the protection of nitrogen, heat up To 160 degrees, after heating for 3 hou...

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PUM

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Abstract

The invention relates to a graphene-base heat-conduction composite material. The graphene-base heat-conduction composite material is characterized by containing the following components in percentageby weight: 40%-90% of graphene, 0.1%-10% of palladium or platinum, 9%-50% of nano-particles and 1-20% of resin macromolecules. The graphene-base heat-conduction composite material has the characteristics of good thermal conductivity and low cost.

Description

technical field [0001] The patent of the present invention belongs to the field of preparation and application of nanomaterials, and more specifically relates to a graphene-based heat-conducting composite material and its preparation and application. Background technique [0002] Graphene is a two-dimensional carbon material with many excellent properties, such as high strength, high light transmission, high electrical conductivity, and high thermal conductivity. Graphene has received great attention as a thermally conductive material due to its excellent thermal conductivity. Graphene heat conduction film can be used in electronic devices for heat dissipation of electronic components, and has broad application prospects. However, the high thermal conductivity of graphene is mainly tested in single-layer graphene films, while the multilayer graphene films assembled by graphene can only obtain poor thermal conductivity. The main reason is that the orientation of the graphen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/14C04B26/18C04B26/12C04B26/06C04B26/04C09K5/14
CPCC04B26/04C04B26/06C04B26/122C04B26/14C04B26/18C04B2111/00482C04B2201/32C09K5/14C04B14/024C04B14/34
Inventor 施梦晨李晓军
Owner 江阴精醇新材料科技有限公司
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