Vertical continuous preparing device for carbon nano tube fibers and preparing method

A carbon nanotube fiber, a technology for preparing a device, applied in nanotechnology and other directions, can solve the problems of increasing the complexity of the device, the production cost, and the unfavorable process continuity, and achieve the effects of simple structure, low cost, uniform injection and gasification

Active Publication Date: 2016-03-30
SUZHOU CREATIVE CARBON NANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In terms of the development of vertical continuous carbon nanotube fiber preparation equipment, the team of Professor Li Yali of Tianjin University used a traditional injection needle to inject liquid-phase carbon source, and the liquid-phase carbon source was brought into the high-temperature reactor by air flow for the preparation of carbon nanotube fiber , the liquid-phase carbon source injector method in this method is simple, but the liquid-phase carbon source is sen

Method used

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  • Vertical continuous preparing device for carbon nano tube fibers and preparing method
  • Vertical continuous preparing device for carbon nano tube fibers and preparing method

Examples

Experimental program
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Example Embodiment

[0037] Combine figure 1 with figure 2 , Introduces a specific embodiment of the carbon nanotube fiber preparation method of the present invention. In this embodiment, the method specifically includes:

[0038] S1. Raise the temperature of the reaction furnace to 1100°C to 1600°C, keep the temperature stable, and inject carrier gas into the reaction furnace. In this embodiment, a floating catalytic chemical vapor deposition method is used to prepare carbon nanotube aggregates in the tube furnace 20, the carrier gas is a mixed gas of hydrogen and nitrogen or hydrogen and inert gas, and the volume percentage of hydrogen is 10~ 100%, the inert gas is argon or helium, and the flow of carrier gas is 2-10L / min.

[0039] S2. The liquid-phase carbon source is injected through a carbon source injection pump, and the liquid-phase carbon source sequentially passes through the carbon source transport pipe and the flow restrictor, and then uniformly enters the carbon source injection tube cor...

Example Embodiment

[0045] Example 1

[0046] Using a mixture of ethanol, ferrocene, and thiophene as the liquid carbon source, the heating temperature of the reaction furnace is up to 1100°C, and injected through a carbon source injection pump. The liquid carbon source passes through the carbon source transportation pipe and the flow restrictor in turn and is uniform. The carbon source that enters the carbon source injection tube is injected into the core, the mixed gas of hydrogen and argon is the carrier gas, the flow of the carrier gas is 2L / min, and the continuous collection time is 1 hour. The carbon nanotube fibers are continuously collected by the roller, and finally Can get 100m continuous carbon nanotube fiber material.

Example Embodiment

[0047] Example 2

[0048] Using a mixture of ethanol, ferrocene, and thiophene as the liquid carbon source, the heating temperature of the reaction furnace is up to 1300°C, and injected through a carbon source injection pump. The liquid carbon source passes through the carbon source transport pipe and the flow restrictor in turn and is uniform The carbon source that enters the carbon source injection tube is injected into the core, the mixed gas of hydrogen and argon is the carrier gas, the carrier gas flow is 6L / min, and the continuous collection time is 5 hours. The carbon nanotube fibers are continuously collected by the roller, and finally A continuous 800m carbon nanotube fiber material can be obtained.

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Abstract

The invention provides a vertical continuous preparing device for carbon nano tube fibers. The vertical continuous preparing device comprises a carbon source injector, a tube furnace and a collecting box communicated with the tube furnace. The carbon source injector comprises a carbon source injection pump, a carbon source injection tube, a carbon source conveying tube and a flow limiting part, wherein one end of the carbon source injection tube is located in the tube furnace, the carbon source injection pump and the carbon source injection tube are communicated through the carbon source conveying tube, and the flow limiting part is arranged between the carbon source conveying tube and the carbon source injection tube. The carbon source injection pump injects a liquid-phase carbon source into the tube furnace through the carbon source conveying tube and the carbon source injection tube, a carbon source injection tube core is further arranged in the carbon source injection tube, one end of the carbon source injection tube core is arranged in the flow limiting part, and the other end of the carbon source injection tube core protrudes and stretches out of the carbon source injection tube. Compared with the prior art, the carbon source injector which is simple in structure and low in cost is adopted so that the liquid-phase carbon source can be uniformly injected and gasified, and finally the purpose of stably and continuously preparing the carbon nano tube fibers is achieved.

Description

technical field [0001] The invention relates to the field of nanomaterial manufacturing, in particular to a preparation device and method for vertical continuous carbon nanotube fibers. Background technique [0002] Carbon nanotube fiber materials have excellent mechanical, thermal and electrical properties, and have broad application prospects in the preparation of lightweight, high-strength, high-conductivity multifunctional fiber materials. Carbon nanotube fibers can be synthesized by floating catalysis, using liquid carbon sources such as ethanol, adding ferrocene and other catalysts, and passing them into a high-temperature tube furnace under the environment of hydrogen and nitrogen or hydrogen and inert gas carrier gas. Fibers (Li et al. Science 2004 and US Patent 2005 / 006801-A1). In recent years, the development of industrialized preparation technology of floating catalytic carbon nanotube fiber technology has received widespread attention. The floating carbon nanot...

Claims

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Application Information

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IPC IPC(8): C01B31/02B82Y40/00
Inventor 勇振中李志许超李清文
Owner SUZHOU CREATIVE CARBON NANOTECH
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