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Graphene composite fiber yarn and its preparation method and application

A graphene composite, graphene technology, applied in the textile field, can solve the problems of graphene structure and performance adverse effects, easy agglomeration, limited application, etc., to achieve good spinnability and continuity, complete crystal structure, and spinnability. excellent effect

Active Publication Date: 2019-08-30
福建祥业生物工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large specific surface area of ​​graphene and the existence of van der Waals force between layers, it is easy to agglomerate; in practical applications, graphene materials are difficult to stably disperse in various solvents, which greatly limits its application.
In addition, when the graphene dispersion is compounded with viscose, it will modify the properties of viscose, thereby reducing its spinnability and spinning quality
[0005] Although there are currently some relevant researches on improving the dispersion performance of graphene, most of the existing methods have poor dispersion effects, cannot achieve high-concentration stable dispersion (the existing dispersion concentration is usually only about 1.0mg / mL), and the dispersion method is easy to adjust. The structure and properties of graphene cause adverse effects, etc.; therefore, developing a graphene dispersion that can be stably dispersed at a high concentration without affecting performance and improving the spinnability and spinning quality of graphene and adhesive systems is currently the research problems

Method used

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  • Graphene composite fiber yarn and its preparation method and application
  • Graphene composite fiber yarn and its preparation method and application
  • Graphene composite fiber yarn and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1. Preparation of graphene dispersion

[0050] Put non-oxidized graphene (number of layers is 1-9 layers, average particle size ≤ 2 μm, hereinafter referred to as graphene) in deionized water, and then add carboxymethyl cellulose sodium for ultrasonic dispersion, wherein: graphene and carboxy The mass ratio of methylcellulose sodium is 15:1; the ultrasonic dispersion is carried out twice, the frequency of the first ultrasonic dispersion is 80kHZ, and the dispersion time is 1h. The frequency of the second ultrasonic dispersion is 50kHZ, and the dispersion time is 2h to obtain the first dispersion liquid.

[0051] Add hexamethylenetetramine to the above-mentioned first dispersion liquid, stir and reflux reaction; wherein, the mass ratio of graphene and hexamethylenetetramine is 6:1, the temperature of stirring and reflux reaction is 100°C, and the time is 2h, the second dispersion liquid was prepared.

[0052] The above-mentioned second dispersion is centrifuged, wherei...

Embodiment 2

[0066] 1. Preparation of graphene dispersion

[0067] Put non-oxidized graphene (the number of layers is 1-9 layers, the particle size is 100nm-2μm) in deionized water, and then add sodium carboxymethyl cellulose for ultrasonic dispersion, wherein: graphene and sodium carboxymethyl cellulose The mass ratio is 20:1; the ultrasonic dispersion is carried out twice, the frequency of the first ultrasonic dispersion is 100kHZ, and the dispersion time is 0.5h. The frequency of the second ultrasonic dispersion is 60kHZ, and the dispersion time is 1.5h to obtain the first dispersion liquid.

[0068] Add hexamethylenetetramine to the above-mentioned first dispersion liquid, stir and reflux reaction; wherein, the mass ratio of graphene and hexamethylenetetramine is 4:1, the temperature of stirring and reflux reaction is 120°C, and the time is After 1 h, the second dispersion liquid was prepared.

[0069] Centrifuge the above-mentioned second dispersion, wherein the centrifugation speed...

Embodiment 3

[0079] 1. Preparation of graphene dispersion

[0080] Put non-oxidized graphene (the number of layers is 1-9 layers, and the average particle size is less than or equal to 2 μm) in deionized water, and then add sodium dodecyl sulfate for ultrasonic dispersion, wherein: the mixture of graphene and sodium dodecyl sulfate The mass ratio is 10:1; the ultrasonic dispersion is carried out twice, the frequency of the first ultrasonic dispersion is 80kHZ, and the dispersion time is 1h. The frequency of the secondary ultrasonic dispersion is 40kHZ, and the dispersion time is 3h to obtain the first dispersion liquid.

[0081] Add hexamethylenetetramine to the above first dispersion liquid, stir and reflux reaction; wherein, the mass ratio of graphene and hexamethylenetetramine is 8:1, the temperature of stirring and reflux reaction is 80°C, and the time is 3h, the second dispersion liquid was prepared.

[0082] The above-mentioned second dispersion liquid is centrifuged, wherein the c...

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Abstract

The invention provides a graphene composite fiber yarn and a preparation method and application thereof. The method comprises the steps of dispersing graphene in deionized water to obtain a graphene dispersion; mixing a viscose with the graphene dispersion to obtain a spinning glue; conducting wet spinning on the spinning glue to obtain a graphene composite fiber; conducting spinning on the graphene composite fiber to obtain a graphene composite fiber yarn. The preparation method can prepare the graphene dispersion with high concentration and stable dispersion, the crystal structure of the graphene is complete, the spinnability is good when spinning with the glue, the spinning quality is high, and convenience is provided for the graphene composite fiber yarn to be widely used in the textile field.

Description

technical field [0001] The invention belongs to the technical field of textiles, and in particular relates to a graphene composite fiber yarn and a preparation method and application thereof. Background technique [0002] Graphene is a two-dimensional carbon nanomaterial composed of carbon atoms in a hexagonal honeycomb lattice with sp2 hybrid orbitals. It has excellent optical, electrical, and mechanical properties. It is used in materials science, micro-nano processing, energy, biomedicine and Drug delivery and other aspects have important application prospects. In recent years, graphene has been widely used in the field of textiles, and has gradually become a research hotspot in the field of textile fibers. Graphene textiles have great application prospects in electrical conductivity, radiation protection, UV protection, far infrared, antibacterial, thermal conductivity, etc. . [0003] Viscose fiber (referred to as viscose) is made of natural fiber (wood fiber, cotton ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/04D01F2/08
Inventor 颜章根
Owner 福建祥业生物工程技术有限公司
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