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Preparation method of conducting shell-like layered graphene composite material

A composite material and layered graphite technology, applied in the field of preparation of conductive shell-like layered graphene composite materials, can solve problems such as decreased toughness

Active Publication Date: 2013-02-13
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the mechanical strength of the resulting composite is improved, its toughness is greatly reduced

Method used

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  • Preparation method of conducting shell-like layered graphene composite material
  • Preparation method of conducting shell-like layered graphene composite material
  • Preparation method of conducting shell-like layered graphene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 10 mg of graphene oxide, mechanically stir and disperse in 100 ml of deionized water, and then ultrasonically disperse for 1 h to form a light yellow transparent solution. The light yellow transparent solution was further centrifuged to remove undispersed agglomerated particles and multilayer graphene oxide sheets. The centrifugation speed is 5000r / min, the centrifugation time is 10min, and the supernatant is taken. At this point, a single-layer graphene oxide sheet can be obtained, and the atomic force photograph shows that the thickness of the graphene oxide sheet is about 1 nm, such as figure 1 as shown, figure 1 a is an atomic force scanning photo of a single-layer graphene oxide sheet, figure 1 b is corresponding to figure 1 a The thickness of the graphene oxide sheet. The graphene oxide film was obtained by vacuum filtration. Under dark conditions, weigh 7 mg of 10,12-pentacosadiyn-1-ol (PCDO), dissolve it in 17.2 g of tetrahydrofuran, and make a concen...

Embodiment 2

[0031] Weigh 20 mg of graphene oxide, mechanically stir and disperse in 100 ml of deionized water, and then ultrasonically disperse for 1 h to form a light yellow transparent solution. The light yellow transparent solution was further centrifuged to remove undispersed agglomerated particles and multilayer graphene oxide sheets. The centrifugation speed is 6000r / min, the centrifugation time is 30min, and the supernatant is taken. The graphene oxide film was obtained by vacuum filtration. Under dark conditions, weigh 7 mg of 10,12-pentacosadiyn-1-ol (PCDO), dissolve it in 17.2 g of tetrahydrofuran, and make a concentration of about 10 -2 mol / L PCDO solution, the graphene oxide film was immersed in the PCDO solution, and reacted in the dark for 1 h. Take out the graphene oxide-PCDO composite material after the esterification reaction, wash it with tetrahydrofuran solvent for 2~3 times, remove the unreacted PCDO, and after the solvent is completely evaporated, irradiate it with ...

Embodiment 3

[0033] Weigh 30 mg of graphene oxide, mechanically stir and disperse in 100 ml of deionized water, and then ultrasonically disperse for 2 hours to form a light yellow transparent solution. The light yellow transparent solution was further centrifuged to remove undispersed agglomerated particles and multilayer graphene oxide sheets. The centrifugation speed is 7000r / min, the centrifugation time is 40min, and the supernatant is taken. The graphene oxide film was obtained by vacuum filtration. Under light-shielded conditions, weigh 14 mg of 10,12-pentacosadiyn-1-ol (PCDO), dissolve it in 17.2 g of tetrahydrofuran, and make a concentration of about 2×10 -2 mol / L PCDO solution, the graphene oxide film was immersed in the PCDO solution, and reacted in the dark for 2 hours. Take out the graphene oxide-PCDO composite material after the esterification reaction, wash it with tetrahydrofuran solvent for 2~3 times, remove the unreacted PCDO, and after the solvent is completely evaporate...

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Abstract

Provided is a preparation method of a conducting shell-like layered graphene composite material. Inorganic oxidized graphene and small organic molecule 10,12-pentacosadiyn-1-OL (PCDO) are orderly assembled to form the layered graphene composite material. The preparation method comprises preparation of oxidized grapheme uniformed aqueous solution, assembly of an oxidized grapheme film, esterification of the PCDO and the oxidized grapheme and cross-linking of the PCDO and reduction of the oxidized grapheme. The toughness of the shell-like layered composite material prepared by the method is twice that of a natural shell, and simultaneously the conducting shell-like layered graphene composite material has excellent conductivity and is widely applied to the fields of artificial muscle, tissue engineering, capacitor electrodes and aerospace and the like.

Description

technical field [0001] The invention relates to a method for preparing a conductive shell-like layered graphene composite material, which belongs to the field of nanocomposite material preparation. Background technique [0002] Graphene is a new material with a single-layer sheet structure composed of carbon atoms. is a carbon atom with sp 2 The hybridized orbitals form a hexagonal planar film with a honeycomb lattice, a two-dimensional material with a thickness of only one carbon atom. Graphene and carbon nanotubes belong to the family of new carbon materials, and are the thinnest, hardest, and toughest materials among known materials. Graphene has unique physical and chemical properties. It is almost completely transparent and only absorbs 2.3% of light. At room temperature, its electron transmission speed is dozens of times faster than that of silicon, and its thermal conductivity is as high as 5300W / m K, which is higher than that of carbon nanotubes. And diamond, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/00C07C67/08C01B31/02H01B1/04H01B13/00C01B32/184
Inventor 程群峰吴梦溪马洋江雷
Owner BEIHANG UNIV
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