Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of three-dimensional graphene-nanowire hybrid aerogel

A technology of graphene and airgel, which is applied in the field of preparation of three-dimensional graphene composite airgel, can solve the problems of large contact thermal resistance, poor thermal conductivity, and inapplicability, and achieve low contact resistance, low contact thermal resistance, tight connection effect

Active Publication Date: 2021-03-19
安徽宇航派蒙健康科技股份有限公司
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently reported three-dimensional graphene airgel materials usually have very poor thermal conductivity
The reason for the above is that the graphene sheets of the three-dimensional graphene airgel material have a very large contact thermal resistance, resulting in poor heat transfer, which makes the three-dimensional graphene airgel material unable to be applied in the field of thermal interface materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A preparation method of a three-dimensional graphene-nanowire hybrid airgel, specifically:

[0040] 1) Ultrasonic dispersion of graphene oxide (GO) and silicon dioxide nanopowder (300nm particle size) in an aqueous solution to obtain a mixed and dispersed aqueous solution of graphene oxide. The mass concentration of graphene oxide is 6g / L, and graphene oxide (GO ), the mass ratio of silica nanopowder is 1:6;

[0041] 2) Then add ammonia water with a concentration of 25% to the prepared graphene oxide / silicon dioxide mixed dispersion solution, and the volume ratio of the added ammonia water to the graphene oxide mixed dispersion solution volume ratio is 1:60.

[0042] 3) Pour the mixed solution formed in 2) into a container, inject ethanol into the container, make it fully mix with the mixed solution formed in 2), and let it stand for 5 hours to obtain graphene oxide hydrogel and organic solvent mixture. Ethanol is removed by evaporation to obtain graphene oxide hydrog...

Embodiment 2

[0050] A preparation method of a three-dimensional graphene-nanowire hybrid airgel, specifically:

[0051] 1) Ultrasonic disperse graphene oxide (GO), carbon nanotubes, and silica nanopowder (300nm particle size) in an aqueous solution to obtain a mixed and dispersed aqueous solution of graphene oxide. The mass concentration of graphene oxide is 6g / L. The mass ratio of graphene (GO) to silica nanopowder is 1:4, and the mass ratio of carbon nanotubes to graphene oxide is 1:100;

[0052] 2) Then add ammonia water with a concentration of 25% to the prepared graphene oxide / silicon dioxide mixed dispersion solution, and the volume ratio of the added ammonia water to the graphene oxide mixed dispersion solution volume ratio is 1:60.

[0053] 3) Pour the mixed solution formed in 2) into a container, inject ethanol into the container, make it fully mix with the mixed solution formed in 2), and let it stand for 5 hours to obtain graphene oxide hydrogel and organic solvent mixture. Et...

Embodiment 3

[0061] A preparation method of a three-dimensional graphene-nanowire hybrid airgel, specifically:

[0062] 1) Ultrasonic dispersion of graphene oxide (GO), carbon nanotubes, and silicon dioxide nanopowder (300nm particle size) in an aqueous solution to obtain a mixed and dispersed aqueous solution of graphene oxide. The mass concentration of graphene oxide is 6g / L, two The mass ratio of silicon oxide nanopowder is 1:20, and the mass ratio of carbon inner nanotubes to graphene oxide is 1:10;

[0063] 2) Then add ammonia water with a concentration of 25% to the prepared graphene oxide / carbon nanotube / silicon dioxide mixed dispersion aqueous solution, the volume ratio of the added ammonia water to the graphene oxide mixed dispersion aqueous solution is 1:60.

[0064] 3) Pour the mixed solution formed in 2) into a container, inject ethanol into the container, make it fully mix with the mixed solution formed in 2), and let it stand for 5 hours to obtain the graphene oxide-carbon na...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
concentrationaaaaaaaaaa
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of three-dimensional graphene-nanowire hybrid aerogel. The preparation method comprises the following steps: S1, preparing graphene composite hydrogel by adopting a self-assembly method; S2, preparing three-dimensional graphene composite aerogel from the graphene composite hydrogel; and S3, using the three-dimensional graphene composite aerogel to prepare nanowires, and realizing three-dimensional network connection formed by the nanowires and the graphene nanosheets to obtain the three-dimensional graphene-nanowire hybrid aerogel.

Description

technical field [0001] The invention relates to a preparation method of a three-dimensional graphene composite airgel. Background technique [0002] In recent years, with the continuous improvement of the integration of electronic devices and smart terminals, heat dissipation has become one of the key factors restricting the performance of devices and terminals. Engineering concepts, and thermal interface materials are a hot spot in the development of thermal management materials in recent years, especially in the case of the rapid development of 5G technology, high-performance thermal interface materials with high thermal conductivity have important application value and potential. [0003] Graphene material is a strategic emerging material in the 21st century. It has good electrical and thermal conductivity, and has important application potential in optics and mechanics. Three-dimensional graphene airgel material is a three-dimensional structure based on two-dimensional ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/00
CPCB01J13/0091
Inventor 谭化兵潘智军
Owner 安徽宇航派蒙健康科技股份有限公司