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Preparation method for polymer-grafted graphene laminated fiber with electrical conductivity and high-strength

A technology of grafting graphite and polymer, which is applied in the manufacture of conductive/antistatic filaments, single-component synthetic polymer rayon, chemical characteristics of fibers, etc. Realization and other issues, to achieve the effect of good conductivity, simple functionalization process and low cost

Inactive Publication Date: 2013-02-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, so far, the use of hydrogen bonds to graft polymers onto graphene surfaces to prepare polymer-graphene layered composite fibers has not been achieved.

Method used

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  • Preparation method for polymer-grafted graphene laminated fiber with electrical conductivity and high-strength
  • Preparation method for polymer-grafted graphene laminated fiber with electrical conductivity and high-strength

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preparation example Construction

[0022] The preparation method of conductive high-strength polymer grafted graphene layered fiber comprises the following steps:

[0023] 1) dissolving 1 part by weight of graphene oxide raw material in 50-5000 parts by weight of solvent, and treating it in an ultrasonic bath of 1-50 Hz for 0.1-1 hour to obtain a graphene oxide dispersion;

[0024] 2) Dissolving 1-20 parts by weight of polymer in 20-80000 parts by weight of solvent to obtain a clear polymer solution;

[0025] 3) Add the graphene oxide dispersion obtained in step 1) to the polymer solution in step 2), add it while stirring, continue stirring for 0.1 to 48 hours after adding it completely, and add a reducing agent to reduce the graphene oxide to Graphene;

[0026] 4) Centrifuge the reaction solution in step 3), wash away the free polymer, and obtain the polymer-grafted graphene sol; and transfer it to the spinning device, and continuously extrude it from the spinning head with a diameter of 5-1000 μm out, ente...

Embodiment 1

[0033] 1) Dissolving 1 part by weight of graphene oxide raw material in 50 parts by weight of water, and treating it in a 50 Hz ultrasonic bath for 0.1 hour to obtain a graphene oxide dispersion;

[0034] 2) Dissolving 20 parts by weight of polyvinyl alcohol in 80,000 parts by weight of water to obtain a polyvinyl alcohol solution;

[0035] 3) Add the graphene oxide dispersion obtained in step 1) to the polyvinyl alcohol solution in step 2), add while stirring, continue stirring for 0.1 hour after adding completely, add 1 weight part of hydrazine hydrate, 95 O C was reacted for 1 hour, and graphene oxide was reduced to graphene;

[0036] 4) Transfer the reaction solution in step 3) into a centrifuge tube, centrifuge at 15,000 rpm for 30 minutes, pour off the supernatant, add ultrapure water to redissolve the centrifuged sediment, and then centrifuge, repeat this for more than 5 times, and wash away free polyvinyl alcohol, so as to obtain the graphene sol grafted by polyvinyl ...

Embodiment 2

[0039] 1) Dissolving 1 part by weight of graphene oxide raw material in 5000 parts by weight of ethylene glycol, and treating it in a 50 Hz ultrasonic bath for 1 hour to obtain a graphene oxide dispersion;

[0040] 2) dissolving 20 parts by weight of polyethylene glycol in 20 parts by weight of ethylene glycol to obtain a polyethylene glycol solution;

[0041] 3) Add the graphene oxide dispersion obtained in step 1) to the polyethylene glycol solution in step 2), add while stirring, continue stirring for 48 hours after adding completely, add 1 weight part of NaOH, 110 O C was reacted for 1 hour, and graphene oxide was reduced to graphene;

[0042] 4) Transfer the reaction solution in step 3) into a centrifuge tube, centrifuge at 15,000 rpm for 30 minutes, pour off the supernatant, add ethylene glycol to redissolve the centrifuged sediment, and then centrifuge, repeat this for more than 5 times, and wash away free polyethylene glycol, so as to obtain the graphene sol grafted w...

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Abstract

The invention discloses a preparation method for a polymer-grafted graphene laminated fiber with electrical conductivity and high-strength. The preparation method comprises steps as follows: (1) dissolving graphene oxide raw materials into a solvent, and ultrasonically processing to obtain graphene oxide dispersing liquid; 2) dissolving the polymer into the solvent to obtain the polymer solution; 3) slowly adding the graphene oxide dispersing liquid into the polymer solution, and adding a reducing agent to reduce the graphene oxide into graphene; and 4) centrifugally processing to wash away free polymer to obtain polymer-grafted graphene sol, transferring the polymer-grafted graphene sol into a spinning device, continuously extruding the polymer-grafted graphene sol from a spinning head at a constant speed, forming in solidifying liquid, and then collecting the formed polymer-grafted graphene sol on a roller shaft, so as to obtain the continuous polymer-grafted graphene laminated fiber. The preparation method is simple and convenient, low in cost, rich in variety of used polymers, and suitable for massive industrial production; the produced fiber is excellent in mechanical performance, and higher in conductivity; and the produced fiber can be applied to fields of power transmission, anti-static textile, engineering material, etc.

Description

technical field [0001] The invention relates to a polymer-grafted graphene layered fiber, in particular to a preparation method of a conductive high-strength polymer-grafted graphene layered fiber. Background technique [0002] Graphene is a layer of carbon atoms with sp 2 Two-dimensional materials formed by connecting hybrid phases. Since 2004 by A. K. Geim (K. S. Novoselov, et al. Science, 2004, 306 , 666-669) discovery has aroused widespread concern in the scientific and industrial circles. This material has the highest strength known (Science, 2008, 321 , 385-388), excellent electrical and thermal conductivity. Using natural graphite as raw material, the mass production of graphene can be realized by chemical oxidation-reduction method (V. C. Tung, et al. Nat. Nanotechnol., 2009, 4 , 25-29). The graphene precursor prepared by chemical oxidation method, that is, graphene oxide has abundant oxygen-containing functional groups, which can form strong hydrogen bonds wit...

Claims

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Application Information

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IPC IPC(8): D01F6/50D01F6/94D01F6/52D01F6/44D01F1/09
Inventor 高超寇亮
Owner ZHEJIANG UNIV
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