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Method of producing carbon nano-tube yarn

A carbon nanotube and carbon nanotube structure technology, which is applied in the field of carbon nanotube yarn preparation, can solve the problems of carbon nanotube yarn application limitations, carbon nanotube yarn length limitation, etc., and achieve good electrical conductivity

Active Publication Date: 2010-03-24
TSINGHUA UNIV +1
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Problems solved by technology

[0003] However, the preparation length of carbon nanotube yarns is currently limited by the size of carbon nanotube arrays. From a carbon nanotube array with a height of 200 microns grown on an existing 4-inch silicon wafer, the carbon nanotube yarns drawn The length of the carbon nanotube yarn is limited, which limits the application of this carbon nanotube yarn in the macroscopic

Method used

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  • Method of producing carbon nano-tube yarn
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  • Method of producing carbon nano-tube yarn

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preparation example Construction

[0012] see figure 1 and combine image 3 , the preparation method of carbon nanotube yarn in this embodiment mainly includes the following steps:

[0013] Step 1: providing a plurality of carbon nanotube arrays 10, preferably, the arrays are super-aligned carbon nanotube arrays.

[0014] see figure 2 , in the present embodiment, the preparation method of the carbon nanotube array 10 adopts the chemical vapor deposition method, and its specific steps include: (a) providing a plurality of flat substrates 12, the substrate 12 can be selected P-type, N-type silicon substrate 12, organic The silicon substrate 12 of oxide layer, or select aluminum oxide, quartz and aluminum silicon carbide substrate 12 for use, present embodiment preferably adopts the silicon substrate 12 of 4 inches; (b) form a uniform catalyst layer 14 on the surface of above-mentioned each substrate 12, The method for forming the catalyst layer on the substrate is an electroplating method or a sputtering meth...

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Abstract

The invention relates to a method of producing carbon nano-tube yarn, comprising the following steps: providing a plurality of carbon nano-tube arrays; drawing one carbon nano-tube array to obtain a first carbon nano-tube structure; drawing the other carbon nano-tube array to obtain a second carbon nano-tube structure; contacting one end of the second carbon nano-tube structure with one end of thefirst carbon nano-tube structure, which is close to the carbon nano-tube arrays, along the drawing direction to obtain a lengthened carbon nano-tube tube structure; repeatedly contacting one end of the second carbon nano-tube structure with one end of the first carbon nano-tube structure to further lengthen the carbon nano-tube tube structure; and processing the carbon nano-tube tube with organicsolvent to obtain the carbon nano-tube yarn.

Description

technical field [0001] The invention relates to a preparation method of carbon nanotube material. In particular, it relates to a method for preparing carbon nanotube yarn. Background technique [0002] Carbon nanotubes are hollow tubes rolled from graphene sheets, which have excellent mechanical, thermal and electrical properties. Carbon nanotubes have a wide range of applications, for example, they can be used to make field effect transistors, atomic force microscope tips, field emission electron guns, nano templates and so on. In particular, Fan Shoushan and others disclosed a pure carbon nanotube yarn drawn from a super-aligned carbon nanotube array in Nature, 2002, 419:801, Spinning Continuous CNT Yarns. This carbon nanotube yarn includes A plurality of carbon nanotube segments connected end to end under the action of van der Waals force, each carbon nanotube segment has approximately the same length, and each carbon nanotube segment is composed of a plurality of carbo...

Claims

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Application Information

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IPC IPC(8): D01F9/12D02G3/02
Inventor 廖运鑫姜开利范守善姚湲张长生白先声
Owner TSINGHUA UNIV
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