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A kind of high conductivity carbon nanotube/graphene aerogel/polystyrene composite material and preparation method thereof

A technology of graphene airgel and carbon nanotubes, which is applied in the field of nanoporous materials - carbon airgel, advanced functional composite materials, and high-strength composite materials, to achieve the effects of building stability, weakening the agglomeration effect, and good conductivity

Active Publication Date: 2020-02-07
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned invention patents and documents all disclose the preparation methods of graphene and polymer composites to prepare aerogels and composite materials, but the method of preparing carbon nanotubes / graphene aerogels and polymers into composite materials is still unknown. see the report

Method used

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  • A kind of high conductivity carbon nanotube/graphene aerogel/polystyrene composite material and preparation method thereof
  • A kind of high conductivity carbon nanotube/graphene aerogel/polystyrene composite material and preparation method thereof
  • A kind of high conductivity carbon nanotube/graphene aerogel/polystyrene composite material and preparation method thereof

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Effect test

Embodiment 1

[0042] The preparation method of carbon nanotube / graphene airgel / polystyrene composite material described in the present embodiment comprises the following steps:

[0043] S0, adopt improved Hummers method to prepare graphene oxide suspension

[0044] S0-1. Weigh 8g of graphite and 3.5g of sodium nitrate as required, mix them into a three-neck flask containing 360mL of concentrated sulfuric acid with a concentration of 98%, mechanically stir in an ice bath for 1h, then add 20g of potassium permanganate, and place the mixture on ice. Continue to stir in the bath for 2 hours, raise the temperature of the water bath to 30°C, and continue to stir for 14 hours. Slowly add 1040 mL of deionized water twice, and finally add 50 mL of hydrogen peroxide solution with a volume concentration of 30%, and react for 30 minutes. Ultrasonic stripping under 40KHz ultrasound for 30 minutes to obtain a graphene oxide mixture;

[0045] S0-2, adding a hydrochloric acid solution with a concentration...

Embodiment 2

[0062] The preparation method of carbon nanotube / graphene airgel / polystyrene composite material described in the present embodiment comprises the following steps:

[0063] S0, adopt improved Hummers method to prepare graphene oxide suspension

[0064] S0-1. Weigh 4g of graphite and 1.9g of sodium nitrate as required, mix them into a three-necked flask containing 180mL of concentrated sulfuric acid with a concentration of 98%, mechanically stir in an ice bath for 1h, then add 11g of potassium permanganate, and place the mixture on ice. Continue stirring in the bath for 2 hours, raise the temperature of the water bath to 25°C, continue stirring for 10 hours, slowly add 540 mL of deionized water twice, and finally add 20 mL of hydrogen peroxide solution with a volume concentration of 30%, and react for 60 minutes. Ultrasonic stripping under 40KHz ultrasound for 30 minutes to obtain a graphene oxide mixture;

[0065] S0-2, adding the hydrochloric acid solution with a concentratio...

Embodiment 3

[0077] The preparation method of carbon nanotube / graphene airgel / polystyrene composite material described in the present embodiment comprises the following steps:

[0078] S0, adopt improved Hummers method to prepare graphene oxide suspension

[0079]S0-1. Weigh 8g of graphite and 4g of sodium nitrate as required, mix them into a three-necked flask with 350mL concentration of 98% concentrated sulfuric acid, stir mechanically in an ice bath for 0.5h, then add 24g of potassium permanganate, and place in ice Continue to stir in the bath for 2 hours, raise the temperature of the water bath to 25°C, continue to stir for 12 hours, slowly add 1080 mL of deionized water twice, and finally add 50 mL of hydrogen peroxide solution with a volume concentration of 30%, and react for 30 minutes. Ultrasonic stripping under 30KHz ultrasound for 30 minutes to obtain a graphene oxide mixture;

[0080] S0-2, adding the hydrochloric acid solution with a concentration of 1.7mol / L into the graphene...

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Abstract

The invention discloses a preparation method of a high-conductivity carbon nanotube / graphene aerogel / polystyrene composite. The method comprises the following steps: mixing graphene oxide with carbon nanotubes, dispersing, and adding a reducing agent to reduce graphene oxide, and carrying out freeze drying, so that carbon nanotubes / graphene aerogel is prepared; then filling a mixture containing styrene monomers into gaps of the aerogel in a vacuum assisted impregnation way, and carrying out in-situ polymerization reaction, so that the carbon nanotubes / graphene / polystyrene composite is obtained; and finally carrying out heat treatment on the obtained composite. The preparation method disclosed by the invention has the advantages that technology is simple, process is environment-friendly, the obtained skeleton aerogel has low density and high porosity, the composite obtained after the skeleton aerogel is compounded with polystyrene has higher strength compared with pure styrene and also has higher conductivity.

Description

technical field [0001] The invention belongs to the technical field of nanoporous materials—carbon airgel, and also belongs to the field of advanced functional composite materials, and specifically relates to a high-performance carbon nanotube / graphene airgel / polystyrene composite material and a preparation method thereof. The prepared carbon nanotube / graphene airgel / polystyrene composite material can be used in the field of conductive high-strength composite materials. Background technique [0002] Polymer-based materials with high conductivity have a wide range of applications in electronic devices, sensors, actuators, and electromagnetic shielding. Graphene has a two-dimensional, conjugated honeycomb network structure, showing many unique properties, such as huge electron mobility, high thermal conductivity, good mechanical properties, and large specific surface area. One of the most promising applications of graphene is as a filler material added to the polymer matrix t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/06C08K7/24C08K3/04C08F112/08C08F2/44
CPCC08F2/44C08F112/08C08K3/04C08K7/24C08L25/06
Inventor 李晓茹宋国君马丽春丛龙亮
Owner QINGDAO UNIV
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