Lamellar carbon nanofibre and preparation method thereof

A layered carbon and fiber technology, applied in the fields of fiber chemical characteristics, textiles and papermaking, etc., can solve problems that have not mentioned the preparation of layered carbon nanofiber materials

Active Publication Date: 2010-03-10
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patents CN200710059491.7 and CN 200710059490.2 disclose the method of preparing carbon nanofibers by using liquid sealing reaction and adding accelerators, but neither mentions the preparation of layered carbon nanofiber materials

Method used

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  • Lamellar carbon nanofibre and preparation method thereof
  • Lamellar carbon nanofibre and preparation method thereof
  • Lamellar carbon nanofibre and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Based on the experimental equipment of the Chinese invention patent (CN101153413), plus a spinning device and an online processing device, layered carbon nanofibers were prepared as an example. The equipment includes tubular reactor, liquid sealing device, spinning device and on-line processing device. Using this device to prepare layered carbon nanofibers, the layered carbon nanofiber aggregates formed in the air flow enter the liquid medium to form layered carbon nanofibers, which are continuously spun in the liquid or outside the liquid medium to prepare continuous layered carbon nanofibers. Equipment principle such as figure 1: 1 Spinning Shaft-1, 2 Spinning-2, 3 Spinning-3, 4 Nozzle, 5 Flange, 6 Quartz Tube, 7 Tube Furnace, 8 Sleeve Packing Film Layer Aggregation, 9 Tail Gas Pipe, 10 Fiber, 11 Water, 12 liquid tank-1, 13 acetone, 14 liquid tank-2, 15 infrared oven lamp. The liquid tank 2 is filled with acetone to clean and compact the layered fibers; the infrare...

Embodiment 2

[0044] The section of the fiber prepared by scanning electron microscope observation embodiment 1 is hollow, and the fiber diameter is 120 microns ( Figure 7 a), containing 3 layers of carbon nanofiber membranes ( Figure 7 b), the fiber surface is composed of carbon nanofibers arranged along the fiber direction ( Figure 8 ). Transmission electron microscopy observes the layer in the fiber, which is made of carbon nanofibers ( Figure 9 ), carbon nanofibers are double-walled carbon nanotubes, which are collapsed ( Figure 9 a) and tubular ( Figure 9 b). Carrying out thermogravimetric analysis to described fiber the purity of carbon tube in the fiber is 96% ( Figure 10 ). The fiber is braided to prepare a layered carbon nanofiber braid ( Figure 11 ).

Embodiment 3

[0046] The fiber preparation process is the same as in Example 1, and a reciprocating wire rod is added between the spinning shaft 2 and the spinning shaft 3 to obtain a carbon nanofiber product arranged obliquely ( Figure 12 ).

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Abstract

The invention relates to a lamellar fibre material and a preparation method thereof. The lamellar carbon nanofibre has multiple layers and a fibre structure of various cross-sectional shapes. The carbon nanofibre structure in the fibre is single-wall carbon nanotube, double-wall carbon nanotube and multi-wall carbon nanotube or a lamination carbon nanotube formed by the collapse of the carbon nanotubes. The macro structure of the fibre is hollow, solid, flat or crimp, and the like. Reaction carbon source, catalyst and promoter are mixed and added into high-temperature reaction airflow of a reactor, carbon nanotube for catalytic cracking growth is gathered into aggregate of lamellar carbon nanotube fibre in the reaction airflow, and the aggregate is spinned after liquid action or spinned through other online processing. The fibre with a multi-layer structure can be applied to structures, functional devices, knitting, and the like. The preparation method of the invention has simple process, is stable and reliable and can be used for preparing various multi-layer carbon nanofibre materials in industries.

Description

technical field [0001] The invention relates to a carbon nanofiber and its preparation technology, in particular to a layered fiber material and its preparation method. technical background [0002] Carbon nanofibers include carbon nanotubes, flat structures formed by the collapse of carbon nanotubes, and carbon nanomaterials with a carbon layer structure. Carbon nanofibers have physical properties such as high strength, high toughness, high electrical conductivity, and high thermal conductivity, as well as high specific surface area and functionalized structure and surface characteristics. These structural, physical, chemical, mechanical and functional properties give carbon nanofibers an extremely wide range of applications, which can be used to prepare high-strength conductive composite materials, conductive materials, electric field emission devices and devices, sensors, catalysts and carriers, filtration and separation, and biomaterials, etc. . Macroscopic carbon fibe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/12
Inventor 李亚利钟小华
Owner TIANJIN UNIV
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