Grapheme/electroconductive polymer composite and preparation method thereof

A technology of conductive polymer and composite material, applied in the field of graphene/conductive polymer composite material and its preparation, can solve the problem that the stability of graphene/polyaniline composite material cannot be guaranteed, and achieve the effect of structural stability

Inactive Publication Date: 2011-10-19
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this literature only uses simple physical methods to composite graphene and polyaniline, and the two materials are combined by van der Waals force, so that the stability of the obtained graphene / polyaniline composite cannot be guaranteed.

Method used

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  • Grapheme/electroconductive polymer composite and preparation method thereof
  • Grapheme/electroconductive polymer composite and preparation method thereof
  • Grapheme/electroconductive polymer composite and preparation method thereof

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Effect test

Embodiment 1

[0036] Step 1: provide a graphene oxide powder; that is: disperse 5 grams of flake natural graphite into 100 milliliters of concentrated sulfuric acid to form a mixture, and stir the mixture at a high speed in the process; add 10 grams to the above mixture within 1 hour Potassium permanganate powder, keep the mixture mixed with potassium permanganate in ice bath to keep its temperature not exceeding 3°C; after the addition of potassium permanganate is completed, remove the ice bath and slowly add 400 ml of deionized water, then The solution is heated to raise the temperature of the solution to 100°C, and kept at the temperature of 100°C for 1 hour, so that the graphite powder, potassium permanganate powder and sulfuric acid fully react to form graphite oxide; after the reaction, dilute and filter And wash the graphite oxide, then the concentration of 5% Na 2 CO 3 The solution was added to the graphite oxide and stirred to become a homogeneous solution, by adding a concentrati...

Embodiment 2

[0042] Step 1: provide a graphene oxide powder; namely: disperse 5 grams of scaly natural graphite into 230 milliliters of concentrated sulfuric acid to form a mixture, and stir the mixture at a high speed during this process; add 30 grams to the above mixture within 1 hour Potassium permanganate powder, keep the mixture mixed with potassium permanganate in ice bath to keep its temperature not exceeding 3°C; after the addition of potassium permanganate is completed, remove the ice bath and slowly add 400 ml of deionized water, then The solution is heated to raise the temperature of the solution to 100°C, and kept at the temperature of 100°C for 1 hour, so that the graphite powder, potassium permanganate powder and sulfuric acid fully react to form graphite oxide; after the reaction, dilute and filter and wash the graphite oxide, then use a concentration of 5% Na 2 CO 3 The solution dissolves the graphite oxide into a homogeneous solution, and through the added Na 2 CO 3 The...

Embodiment 3

[0048] Step 1: provide a graphene oxide powder; namely: disperse 5 grams of scaly natural graphite into 230 milliliters of concentrated sulfuric acid to form a mixture, and stir the mixture at a high speed during this process; add 30 grams to the above mixture within 1 hour Potassium permanganate powder, keep the mixture mixed with potassium permanganate in ice bath to keep its temperature not exceeding 3°C; after the addition of potassium permanganate is completed, remove the ice bath and slowly add 400 ml of deionized water, then The solution is heated to raise the temperature of the solution to 100°C, and kept at the temperature of 100°C for 1 hour, so that the graphite powder, potassium permanganate powder and sulfuric acid fully react to form graphite oxide; after the reaction, dilute and filter and wash the graphite oxide, then dissolve the graphite oxide in water, and then add a concentration of 5% Na 2 CO 3 The pH value of the solution is 6, and the solution is ultras...

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Abstract

The present invention relates to a graphene / electroconductive polymer composite and a preparation method thereof. The preparation method comprises the following steps: dissolving graphite oxide to obtain a graphene oxide solution; carrying out functional treatment on the grapheme oxide solution; dissolving an electroconductive polymer to obtain an electroconductive polymer solution; mixing the electroconductive polymer solution and the functionally treated graphene oxide solution for chemical reaction; and removing solvents to obtain the graphene / electroconductive polymer composite. The composite is obtained by carrying out chemical bonding on the functionally treated graphene oxide and the electroconductive polymer by an amido group. The graphene / electroconductive polymer composite is in a microscopic structure that the electroconductive polymer is wrapped by graphene and an overall network structure, and has the characteristic of structural stability.

Description

technical field [0001] The invention relates to a graphene / conductive polymer composite material and a preparation method thereof. Background technique [0002] Since 2004, K.S.Novoselov, A.K.Geim, researchers from the School of Physics of the University of Manchester and the Russian Institute of Microelectronics discovered that graphene, as a single-layer carbon atom sheet, can exist stably at room temperature and has large electron holes. Density, since there is a large mobility at room temperature. Graphene is considered to be the thinnest and strongest material ever discovered. Graphene can withstand a current density 6 orders of magnitude higher than copper, has high thermal conductivity and hardness, is impermeable to gases, and has moderate brittleness and ductility. In addition, graphite oxide can be obtained by chemically oxidizing graphite, and then the graphite oxide can be ultrasonically separated to obtain an isolated single-layer graphene oxide. The edge or s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08K9/04C08K9/02C08K3/04C08L79/02C08L79/04C08G73/02C08G73/06
Inventor 刘建华安军伟于美李松梅刘鹏瑞
Owner BEIHANG UNIV
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