Carbon nanotube surface plating method

A carbon nanotube and plating technology, which is applied in the direction of nanotechnology, nanotechnology, solid-state chemical plating, etc., can solve the problems of high processing cost, easily damaged carbon nanotube structure, and difficult quality control, and achieves a simple and easy preparation method The effect of the operation

Active Publication Date: 2019-03-15
SUZHOU FIRST ELEMENT NANO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the one hand, it is because carbon nanotubes need to be dispersed to improve the uniformity of coating; carbon nanotubes can be dispersed by high-speed ball milling or low-speed ball milling, but both high-speed ball milling and low-speed ball milling are only It is suitable for the preparation of a small amount of samples in the laboratory. In large-scale production, the structure of carbo

Method used

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  • Carbon nanotube surface plating method
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  • Carbon nanotube surface plating method

Examples

Experimental program
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Example Embodiment

[0022] Example 1

[0023] In this embodiment, the silicon layer is plated on the surface of carbon nanotubes as an example for description. The specific steps are as follows:

[0024] S 1 , Weigh the whisker-like multi-walled carbon nanotubes and silicon iodide in the ratio of 1:0.5-2.0 molar ratio of carbon to silicon, mix them evenly and compact them;

[0025] S 2 , Connect the compacted carbon nanotubes and silicon iodide mixture to a pair of graphite electrodes, and then vacuum and argon in turn, repeat the operation 3 times until the air is completely removed, and then vacuum to make the compacted carbon nanotubes When the mixture of tube and silicon iodide is in a vacuum state, the vacuum degree is maintained at 9.0×10 -8 mbar;

[0026] S 3 , Pulse current is applied, the current size is 10mA-100A, preferably 1A, the current pulse time is 0.1-10s, the mixture of carbon nanotubes and silicon iodide is heated to 1100°C, silicon iodide is pyrolyzed, and silicon is formed on the sur...

Example Embodiment

[0030] Example 2

[0031] In this embodiment, the titanium coating on the surface of carbon nanotubes is taken as an example for description. The specific steps are as follows:

[0032] S 1 , Weigh the whisker-like multi-walled carbon nanotubes and titanium iodide in the ratio of carbon-titanium molar ratio 1:0.6-1.8, mix them evenly and compact them;

[0033] S 2 , Connect the compacted carbon nanotubes and titanium iodide mixture with a pair of graphite electrodes; then vacuum and argon are sequentially repeated, and the operation is repeated 3 times to completely remove the air, and then vacuum to make the compacted carbon nanotubes The mixture of tube and titanium iodide is in a vacuum state, and the vacuum degree is maintained at 9.0×10 -8 mbar;

[0034] S 3 , Apply a pulse current, the current size is 10mA-100A, preferably 0.5A, the current pulse time is 0.1-5s, heat the carbon nanotube and titanium iodide mixture to 700 ℃, the titanium iodide pyrolyzes, and form on the surface ...

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Abstract

The invention relates to the technical field of advanced materials, in particular to a carbon nanotube surface plating method. The plating method includes the following steps of mixing a carbon nanotube with an iodide of plating materials uniformly to obtain a mixture and compacting the mixture; connecting the compacted mixture to the space between a pair of graphite electrodes and vacuuming; introducing a pulse current in vacuum condition, heating the compacted mixture until the iodide pyrolysis takes place, and plating the carbon nanotube surface with plating materials while releasing the iodine vapor; and lowering the temperature and introducing an inert gas to remove the iodine vapor, and completing the carbon nanotube surface plating. By mixing the carbon nanotube with the iodide of the plating materials, the iodide can be quickly thermally decomposed through heat generated by the self-heating of the carbon nanotube after being powered on. By plating the surface of the carbon nanotube with the plating materials, the preparation method is simple and convenient to operate, the preparation method can be applied to large-scale production and the method is economical, effective andenvironmentally friendly.

Description

technical field [0001] The invention relates to a technology in the field of advanced materials, in particular to a method for coating the surface of carbon nanotubes. Background technique [0002] Compared with untreated carbon nanotubes, carbon nanotubes with coatings have obvious advantages in physical properties, such as tensile strength, yield strength, hardness, wear resistance and other properties have been significantly improved, and the development prospects are broad. [0003] There are many problems in the traditional method of coating carbon nanotubes, which is not suitable for large-scale production. On the one hand, it is because carbon nanotubes need to be dispersed to improve the uniformity of coating; carbon nanotubes can be dispersed by high-speed ball milling or low-speed ball milling, but both high-speed ball milling and low-speed ball milling are only It is suitable for the preparation of a small amount of samples in the laboratory. In large-scale produ...

Claims

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Application Information

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IPC IPC(8): C23C20/04C23C20/06B82Y30/00
CPCB82Y30/00C23C20/04C23C20/06
Inventor 刘媛薛波董明
Owner SUZHOU FIRST ELEMENT NANO TECH
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