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

A graphene aerogel, carbon nanotube technology, applied in the field of advanced functional composite materials, nanoporous materials - carbon aerogels, to achieve the effect of increasing mechanical properties, building stability, and high specific surface area

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 method of graphene and polymer to prepare aerogel and composite material, but the current method of preparing carbon nanotube / graphene oxide airgel and polymer to form composite material is still rarely reported

Method used

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

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Effect test

Embodiment 1

[0043] The preparation method of carbon nanotube / graphene oxide airgel / polystyrene composite material described in this embodiment comprises the following steps:

[0044] S0, adopt improved Hummers method to prepare graphene oxide suspension

[0045] 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 stirring in the bath for 2 hours, raise the temperature of the water bath to 35°C, continue stirring for 14 hours, slowly add 1050 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;

[0046] S0-2, adding a hydrochloric acid solution with a concentration of...

Embodiment 2

[0064] The preparation method of carbon nanotube / graphene oxide airgel / polystyrene composite material described in this embodiment comprises the following steps:

[0065] S0, adopt improved Hummers method to prepare graphene oxide suspension

[0066] S0-1. Weigh 8g of graphite and 4g of sodium nitrate as required, mix them into a three-neck flask with 350mL concentration of 98% concentrated sulfuric acid, stir mechanically in an ice bath for 1h, then add 24g of potassium permanganate, and place in an ice bath Continue to stir for 2 hours, raise the temperature of the water bath to 25°C, continue to stir for 10 hours, slowly add 1080 mL of deionized water twice, and finally add 50 mL of hydrogen peroxide solution with a volume concentration of 30%, react for 30 minutes, and finally at a frequency of 30KHz Ultrasonic exfoliation for 60 minutes under the ultrasonic to obtain a graphene oxide mixture;

[0067] S0-2, adding the hydrochloric acid solution with a concentration of 1....

Embodiment 3

[0078] The preparation method of carbon nanotube / graphene oxide airgel / polystyrene composite material described in this embodiment comprises the following steps:

[0079] S0, adopt improved Hummers method to prepare graphene oxide suspension

[0080] 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 to stir in the bath for 2 hours, raise the temperature of the water bath to 30°C, and continue to stir for 12 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;

[0081] S0-2, adding the hydrochloric acid solution with a concentrati...

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Abstract

The invention discloses a preparation method of a high-performance carbon nano-tube / graphene oxide aerogel / polystyrene composite material. The method includes the steps: firstly, preparing graphene oxide suspension liquid by an improved Hummers method, and performing mixing and freeze drying on the prepared graphene oxide suspension liquid and carbon nano-tubes to prepare carbon nano-tube / graphene oxide aerogel; secondly, filling gaps of the aerogel with mixtures with styrene monomers by a vacuum-assisted impregnation method, and performing in-situ polymerization reaction to obtain a carbon nano-tube / graphene oxide / polystyrene composite material; finally, performing heat treatment on the obtained composite material. The preparation method is simple in process and green and environmentally friendly in process, prepared framework aerogel has the advantages of low density, high porosity and the like, the aerogel and polystyrene are compounded to obtain the composite material, and the composite material has higher strength and modulus as compared with pure polystyrene.

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 oxide airgel / polystyrene composite material and a preparation method thereof , the carbon nanotube / graphene oxide airgel / polystyrene composite material has relatively high mechanical properties. Background technique [0002] Airgel is a porous nanomaterial with a three-dimensional network structure, high specific surface area, and low density, which can be regarded not only as a special functional material, such as a nanoskeleton, but also as a new state of matter, such as properties of condensed matter. Therefore, airgel exhibits unique properties, such as ultra-low thermal conductivity, ultra-low modulus, ultra-low acoustic velocity, ultra-low refractive index, ultra-low dielectric constant and ultra-low velocity, and has a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/24C08F112/08C08K7/24C08L25/06C08F2/44
CPCC08F112/08C08J5/24C08J2325/06C08K7/24C08K2201/006C08K2201/011C08K2201/014C08L25/06C08F2/44
Inventor 李晓茹宋国君彭智杨超丛龙亮
Owner QINGDAO UNIV
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