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Oriented helical carbon nanotube fiber, preparation method and use thereof

A carbon nanotube fiber and carbon nanotube array technology, applied in the nanometer field, can solve the problems of inability to generate rotational force, low cycle life, low energy density, etc., achieve high mechanical strength and electrical conductivity, simple preparation method, fast mechanical The effect of response

Inactive Publication Date: 2012-10-03
宁国市龙晟柔性储能材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the existing problems of converting electrical energy into mechanical energy, which require a high voltage electric field, relatively low cycle life, relatively low energy density, need to be used in a specific medium, and cannot generate rotational force, etc., and provide A kind of aligned helical carbon nanotube fiber with high mechanical strength and electrical conductivity, its preparation method and application

Method used

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  • Oriented helical carbon nanotube fiber, preparation method and use thereof
  • Oriented helical carbon nanotube fiber, preparation method and use thereof
  • Oriented helical carbon nanotube fiber, preparation method and use thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Example 1 Preparation of Aligned Helical Carbon Nanotube Fibers

[0021] (1) Synthesis of carbon nanotube arrays that can be used for spinning

[0022] Si / SiO 2 / Al 2 o 3 / Fe is the synthesis catalyst, where SiO 2 as the base, Al 2 o 3 It is a buffer layer with a thickness of 10-30 nm and a thickness of Fe of 0.5-1.5 nm. It is deposited on a silicon wafer with an electron beam evaporation coating device; in a tube furnace, ethylene is used as the carbon source, and argon and hydrogen are used as the Carrier gas, chemical vapor deposition method synthesizes highly oriented carbon nanotube arrays on the above catalyst substrate; wherein, the flow rate of ethylene is controlled to 190-290 sccm, the flow rate of argon gas is 400-620 sccm, and the flow rate of hydrogen gas is 20-48 sccm. 5-100 min to obtain spinnable carbon nanotube arrays.

[0023] (2) Synthesis of aligned helical carbon nanotube fibers

[0024] Pull out carbon nanotube ribbons from the...

Embodiment 2

[0027] Example 2 Application of Carbon Tube Fibers in Manufacture of Artificial Muscles

[0028] The present invention has carried out the stress response experiment of carbon tube fiber in the electric current electric field, gets the length and is fixed on the tensometer on the carbon tube fiber of 5mm, carbon tube fiber two ends are glued together with a copper wire respectively with silver glue, and copper wire respectively Connect to the positive and negative poles of the power supply. Before the measurement, adjust the fiber so that it is in a just straightened state. A series of characterizations of the electrostress were performed using dextro-rotated fibers. figure 2 It is a schematic diagram of the stress generated when the carbon tube fiber passes through the current and the mechanical characterization results. figure 2 (a) is a schematic diagram of the contraction and rotation of a right-handed carbon tube fiber when an electric current passes through it....

Embodiment 3

[0034] Example 3 Application of carbon tube fibers in the manufacture of electric motors

[0035] We assembled carbon tube fibers into a simple electric motor, the schematic diagram of which is shown in image 3 (a) shown.

[0036] (1) Assembly and basic operation of carbon fiber motor

[0037] A 4cm-long right-handed carbon tube fiber is suspended on a glass substrate as a "motor fiber". The left and right ends of the fiber are coated with silver glue, and connected to the external circuit by copper wire. A miniature pendulum composed of a carbon nanotube fiber of 8.5mm and a paper sheet weighing 0.302mg is connected to the right end of the suspended fiber. It is negligible compared with the sheet, so the center of mass of the whole pendulum can be regarded as the center of the sheet.

[0038] A current of 5 mA is applied to a 4 cm carbon nanotube fiber, and the left and right ends of the fiber rotate in opposite directions in the direction of increasing helicity. For the ...

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Abstract

The invention belongs to the field of nanotechnology, specifically to an oriented helical carbon nanotube fiber, a preparation method and use thereof. In a tubular furnace, Si / SiO2 / Al2O3 / Fe is used as a synthetic catalyst, ethylene is used as a carbon source, argon and hydrogen are used as carrier gases, and above materials are used to synthetize highly oriented carbon nanotube arrays; carbon nanotube belts are pulled out from carbon nanotube arrays, the pulled-out carbon nanotube belts are connected together by a spindle with a pointed probe to rotate at a constant speed and spin fibers, and then the fibers are processed by ethanol to obtain oriented helical carbon nanotube fibers. The oriented helical carbon nanotube fiber obtained by the invention has high mechanical strength and conductivity. The material is combined with various materials with conduction characteristics and structures to be used for manufacturing artificial muscles, electric motors, drug release carriers and so on.

Description

technical field [0001] The invention belongs to the field of nanotechnology, and in particular relates to an oriented helical carbon nanotube fiber and its preparation method and application. Background technique [0002] Carbon nanotubes have a novel structure and excellent properties, for example, they are very light, have a very large specific surface area, excellent electrical properties, and are also the strongest artificial materials found so far. In order to use carbon nanotubes more conveniently, people spin carbon nanotubes into continuous macroscopic carbon nanotube fibers. This kind of fiber is composed of oriented and helically arranged carbon nanotubes, which has high mechanical strength and high electrical conductivity, so carbon nanotube fibers have broad application prospects. For example, it can be used as an electrode in dye-sensitized solar cells, and it can also be combined with conjugated polymers to be used as a color-changing material sensitive to cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/127D01F11/14D01D5/18
Inventor 彭慧胜郭文瀚刘超
Owner 宁国市龙晟柔性储能材料科技有限公司
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