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Preparation method of carbon nanotube/graphene composite fiber

A graphene composite and carbon nanotube technology, which is applied in the fields of fiber chemical characteristics, rayon manufacturing, textiles and papermaking, etc., to achieve the effects of low resistivity, reduced dosage, and improved mechanical and electrical properties

Active Publication Date: 2021-09-03
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a carbon nanotube / graphene composite fiber in order to solve the stability and dispersion effect of the existing carbon nanotube / graphene composite fiber spinning stock solution and realize the continuous and uniform spinning process. Preparation

Method used

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  • Preparation method of carbon nanotube/graphene composite fiber
  • Preparation method of carbon nanotube/graphene composite fiber
  • Preparation method of carbon nanotube/graphene composite fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0034] 1. Add sodium alginate into deionized water and dissolve for 50 minutes to obtain a uniformly dispersed sodium alginate aqueous solution. Multi-walled carbon nanotubes and graphene are added in the aqueous sodium alginate solution, and the resulting suspension is ultrasonicated for 50 min under an ultrasonic power of 200W to obtain a uniformly dispersed carbon nanotube / graphene suspension, such as figure 1 Shown in 4.

[0035] Among them, the mass of the multi-walled carbon nanotubes / graphene system in the carbon nanotube / graphene suspension and the volume ratio of deionized water are 16mg:1mL, and the multi-walled carbon nanotube / graphene in the carbon nanotube / graphene suspension The mass ratio of the alkene system to the sodium alginate is 3:1, and in the carbon nanotube / graphene system, the mass ratio of the carbon nanotube to the graphene is 1:1.

[0036] Two, the homogeneously dispersed carbon nanotube / graphene system suspension that step 1 obtains is put into sy...

Embodiment 2

[0040] The difference between this example and Example 1 is that the injection speed in Step 2 is 50 mL / h, and the rest of the operation steps and parameters are the same as those in Example 1.

Embodiment 3

[0042] The difference between this embodiment and embodiment 1 is that the injection speed in step 2 is 40 mL / h, and the rest of the operation steps and parameters are the same as in embodiment 1.

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Abstract

The invention discloses a preparation method of carbon nanotube / graphene composite fiber, and belongs to the technical field of high-toughness composite nano preparation. According to the invention, the purposes of the stability and dispersion effect of an existing spinning solution for preparing the carbon nanotube / graphene composite fiber and continuous and uniform filament output in a spinning process are achieved. A natural polysaccharide material-sodium alginate is used as a surfactant to disperse carbon nanotubes and graphene, and compared with a traditional surfactant, the introduction of the sodium alginate reduces the use amount of the surfactant, also reduces the use amount of a non-nano carbon material component, and facilitates the improvement of the mechanical property and the electrical property of the final nano composite fiber. The content of nano material system components in the obtained carbon nanotube / graphene composite fiber can reach 80%, and the Young modulus of monofilament stretching can reach 2056.24 MPa; the tensile strength can reach 24.46 MPa; and the resistivity is as low as 1.6x10<-3> omega.m.

Description

technical field [0001] The invention relates to a method for preparing a carbon nanotube / graphene composite fiber, and belongs to the technical field of preparation of high-toughness composite nanomaterials. Background technique [0002] Carbon nanotubes and graphene are currently the two most widely used materials in nanomaterials. Due to their excellent mechanical, electrical, thermal properties and good stability, they have been widely used in aerospace, mechatronics, and biomedicine. and energy storage catalysis. But at present, carbon nanotubes and graphene are mainly applied in the form of powder, and the problem of easy agglomeration makes the excellent performance of the two nanomaterials not fully play an ideal role. Especially in the preparation of polymer-based composites, because the polymer matrix generally has a relatively high viscosity, it is often impossible to achieve ideal uniform dispersion in the matrix after direct application of nanomaterials, which e...

Claims

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Application Information

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IPC IPC(8): D01F9/12D01F1/10
CPCD01F9/12D01F1/10
Inventor 郑婷李璇蕊王晓东张晓红乔英杰
Owner HARBIN ENG UNIV