Method for preparing ultra-fatigue-resisting bionic graphene nano composite material

A nano-composite material and graphene technology, which is applied in the field of preparing super fatigue-resistant biomimetic graphene nano-composite materials, can solve the problem that the dynamic fatigue resistance performance has not been studied and reported, and achieve the effect of excellent electrical conductivity.

Active Publication Date: 2017-06-13
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these widely studied properties are only the static mechanical properties of graphene nanocomposites, and its dynamic fatigue resistance, which is an important attribute of flexible electronic devices, has not been reported yet.

Method used

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  • Method for preparing ultra-fatigue-resisting bionic graphene nano composite material
  • Method for preparing ultra-fatigue-resisting bionic graphene nano composite material
  • Method for preparing ultra-fatigue-resisting bionic graphene nano composite material

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Embodiment 1

[0035] Prepare a 5mg / mL Tris buffer solution in advance: weigh 1.5g of Tris and dissolve it in 50mL of deionized water, then add 0.32mL of concentrated hydrochloric acid, stir for 10min, then add 250mL of deionized water, and then stirred for 10min to obtain a uniform 5mg / mL Tris buffer solution; prepare 2mM NiCl 2 Solution: Weigh 9.5mg of nickel chloride hexahydrate and dissolve it in 20mL of deionized water, stir for 10min to obtain a uniform 2mM NiCl 2 Solution; prepare a 2 mg / mL dopamine solution: weigh 40 mg of dopamine hydrochloride and dissolve it in 20 mL of deionized water, stir for 10 minutes to obtain a uniform 2 mg / mL dopamine solution, which is prepared and used immediately. Then weigh 20 mg of graphene oxide, mechanically stir and disperse in 10 ml of deionized water, and then ultrasonically disperse for 0.5 h to form a brown transparent solution; then, under stirring conditions, add 3 mL of the above tris buffer solution and 0.5 mL of the above dopamine solutio...

Embodiment 2

[0037] Prepare a 5mg / mL Tris buffer solution in advance: weigh 1.5g of Tris and dissolve it in 50mL of deionized water, then add 0.32mL of concentrated hydrochloric acid, stir for 10min, then add 250mL of deionized water, and then stirred for 10min to obtain a uniform 5mg / mL Tris buffer solution; prepare 2mM NiCl 2 Solution: Weigh 9.5mg of nickel chloride hexahydrate and dissolve it in 20mL of deionized water, stir for 10min to obtain a uniform 2mM NiCl 2 Solution; prepare a 2 mg / mL dopamine solution: weigh 40 mg of dopamine hydrochloride and dissolve it in 20 mL of deionized water, stir for 10 minutes to obtain a uniform 2 mg / mL dopamine solution, which is prepared and used immediately. Then weigh 20 mg of graphene oxide, mechanically stir and disperse in 10 ml of deionized water, and then ultrasonically disperse for 0.5 h to form a brown transparent solution; then, under stirring conditions, add 3 mL of the above tris buffer solution and 0.5 mL of the above dopamine solutio...

Embodiment 3

[0039] Prepare a 5mg / mL Tris buffer solution in advance: weigh 1.5g of Tris and dissolve it in 50mL of deionized water, then add 0.32mL of concentrated hydrochloric acid, stir for 10min, then add 250mL of deionized water, and then stirred for 10min to obtain a uniform 5mg / mL Tris buffer solution; prepare 2mM NiCl 2 Solution: Weigh 9.5mg of nickel chloride hexahydrate and dissolve it in 20mL of deionized water, stir for 10min to obtain a uniform 2mM NiCl 2 Solution; prepare a 2 mg / mL dopamine solution: weigh 40 mg of dopamine hydrochloride and dissolve it in 20 mL of deionized water, stir for 10 minutes to obtain a uniform 2 mg / mL dopamine solution, which is prepared and used immediately. Then weigh 20 mg of graphene oxide, mechanically stir and disperse in 10 ml of deionized water, and then ultrasonically disperse for 0.5 h to form a brown transparent solution; then, under stirring conditions, add 3 mL of the above tris buffer solution and 0.5 mL of the above dopamine solutio...

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Abstract

The invention relates to a method for preparing an ultra-fatigue-resisting bionic graphene nano composite material. The method comprises the following steps: firstly, taking inorganic graphene oxide and dopamine (DA) to react and constructing a graphene oxide-polydopamine (GO-PDA) heterogeneous elementary material; secondly, adding a nickel dichloride (NiCl2) solution and forming a chelating structure through the nickel dichloride solution and polydopamine; filtering a uniformly mixed solution, which is finally obtained, in vacuum to prepare a graphene oxide-polydopamine-Ni<2+> (GO-PDA-Ni) nano composite material; finally, chemically reducing to prepare a reduced graphene oxide-polydopamine-nickel ion (rGO-PDA-Ni) bionic graphene nano composite material. The obtained bionic graphene nano composite material not only has an ultrahigh fatigue-resisting property, but also has an excellent conducting performance. Under the tension of 290MPa, the electrical conductivity can still teach 144.5S / cm after 1.0*10<5> times of periodic extension tests. Furthermore, the maximum strength is 2.1 times as much as that of natural abalone shells and the maximum toughness is 7.5 times as much as that of the natural abalone shells.

Description

technical field [0001] The invention relates to a method for preparing a super-fatigue-resistant biomimetic graphene nanocomposite material, belonging to the field of biomimetic nanocomposite material preparation. Background technique [0002] The increasingly popular flexible electronic devices require high performance after repeated deformation, and graphene has excellent mechanical and electrical properties, which can be used as a basic material for the preparation of functional materials in such flexible electronic devices. Therefore, graphite The assembly of ene nanosheets into high-performance macroscopic nanocomposites is of great significance. Recently, a large number of graphene layered nanocomposites with excellent mechanical properties have been reported. 2+ Nanocomposite fiber (Adv.Mater.2016,28,2834.), its strength can reach 842.6MPa; Cheng Qunfeng et al. also prepared a super-tough graphene-chitosan nanocomposite film (ACS Nano 2015,9,9830. ), its toughness c...

Claims

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Application Information

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IPC IPC(8): C08G73/06C08K7/00C08K3/04C08K3/16
CPCC08G73/0672C08K3/04C08K3/16C08K7/00
Inventor 程群峰万思杰虎伟
Owner BEIHANG UNIV
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