Nano conductive polymer/graphene composite fiber, and preparation method and application thereof

A graphene composite and nano-conductive technology, applied in the manufacture of conductive/antistatic filaments, fiber chemical characteristics, single-component synthetic polymer rayon, etc., can solve the serious accumulation of graphene sheets, poor specific capacitance, specific Low capacitance and other issues, to achieve the effect of easy continuous scale, easy operation, high conductivity

Active Publication Date: 2015-07-22
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of serious accumulation of graphene sheets in pure graphene fiber...

Method used

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  • Nano conductive polymer/graphene composite fiber, and preparation method and application thereof
  • Nano conductive polymer/graphene composite fiber, and preparation method and application thereof
  • Nano conductive polymer/graphene composite fiber, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The process of preparing polyaniline nanorods / graphene composite fibers with a PANR / GO mass ratio of 1:9 spinning solution is as follows:

[0055] (1) 2.7g of graphene oxide was added to 97g of NaOH aqueous solution with a pH value of 9, and ultrasonically treated for 30min to obtain a 3wt% graphene oxide solution. Then 0.3g of PANR powder was added and the sonication was continued for 30min. Finally, an appropriate amount of 5 mol / L NaOH solution was added dropwise to adjust the pH value to 9 to obtain a composite spinning solution with a PANR / GO mass ratio of 1 / 9 and a solid content of 3 wt%.

[0056] (2) The composite spinning solution obtained in (1) is extruded at a speed of 2m / min through the spinneret holes into static 80% acetic acid aqueous solution and solidified into fibers, and the wet fibers are drawn out of the coagulation bath, dried by hot air, and rolled Wound onto the silk drum to obtain the PANR / GO composite fiber; wherein, the winding speed of the s...

Embodiment 2

[0060] The process of preparing polyaniline nanorods / graphene composite fibers with a spinning solution with a mass ratio of PANR / GO of 2:8 is as follows:

[0061] (1) Add 2.4 g of graphene oxide to 77.6 g of water, use concentrated ammonia water to adjust the pH value to 9, and grind for 30 min. Then, 20 g of a 3 wt % aqueous suspension of polyaniline nanorods was added, and dispersion mixing was carried out for 1 hour using a high-speed emulsifier. Finally, continue to add ammonia water to adjust the pH to 9 to obtain a composite spinning solution.

[0062] (2) Extrude the composite spinning solution obtained in (1) through the spinneret holes at a speed of 2 m / min into methanol flowing in parallel to solidify into fibers. Wherein, the flow velocity of methanol is 2 m / min, that is, the draw ratio of the nozzle is 1.0 times. Then the wet fiber was taken out of the coagulation bath, dried by hot air, and then wound continuously onto the filament tube to obtain the PANR / GO co...

Embodiment 3

[0066] The process of preparing polyaniline nanorods / graphene composite fibers with a nozzle draw ratio of 1.0 times with a spinning solution with a mass ratio of PANR / GO of 3:7 is as follows:

[0067] (1) Add the aqueous suspension of 2.1g graphene oxide and 30g 3wt% polyaniline nanorods to 67.9g water, use concentrated ammonia water to adjust the pH value to 9, then use a high-speed emulsifier to disperse and mix for 1 hour, and finally continue to add Ammonia water was used to adjust the pH to 10 to obtain a composite spinning solution.

[0068] (2) The composite spinning solution obtained in (1) is extruded into rotating ethanol with a speed of 2m / min through the spinneret hole and solidified into fibers, wherein the distance between the spinneret and the center of rotation is 4cm, and the speed of rotation is 8rpm. That is, the nozzle stretch ratio is 1.0 times. The wet fiber was taken out of the coagulation bath, dried by an infrared lamp, and then wound continuously on...

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Abstract

The invention relates to a nano conductive polymer/graphene composite fiber, and a preparation method and application thereof. The section of the fiber is special; a graphene sheet is at a loose stacking state; enriched fold morphology is formed on the surface of the fiber; the average strength of the fiber is greater than 50 MPa; the average breaking elongation is greater than 2 percent; the average conductivity is greater than 1 S/cm. The method comprises the following steps: preparing conductive polymer/graphene oxide composite spinning solution; then extruding the solution into a coagulating bath and performing elongation and curing, and performing drying and winding on the obtained wet fiber, so as to obtain conductive polymer/graphene oxide composite fiber; finally performing reduction through a chemical or physical method so as to obtain the nano conductive polymer/graphene composite fiber. The nano conductive polymer/graphene composite fiber has the advantages that an adjustable special section structure is formed on the section of the composite fiber, rich microstructures are formed on the surface of the composite fiber, the problem that graphene sheet layers are closely stacked is overcome, the graphene fiber with pure toughness is greatly enhanced, and excellent conductivity of the graphene fiber is still kept, so that the composite fiber has a wide application prospect.

Description

technical field [0001] The invention belongs to the field of graphene composite fibers, in particular to a nano conductive polymer / graphene composite fiber and its preparation method and application. Background technique [0002] Graphene has excellent mechanical, thermal, electrical and optical properties, and its application prospects are very broad. Among the macroscopic materials composed of graphene such as powder, fiber, film, paper, airgel and foam, graphene fiber has outstanding flexibility and textile processability, and its average strength, electrical conductivity, thermal conductivity and other properties are better It is excellent in the fields of flexible wearable energy storage devices, sensors, microelectronic devices, electromagnetic wave absorption and shielding, etc., so it has greater application potential. [0003] However, pure graphene fibers are composed of graphene nanosheets, which have the disadvantages of small specific surface area and high brit...

Claims

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Application Information

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IPC IPC(8): D01F8/16D01F8/18D01F6/94D01F1/09
Inventor 朱美芳陈少华麻伍军相恒学周哲
Owner DONGHUA UNIV
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