Method of manufacturing carbon nanotube

Manufacturing carbon nanotubes of various shapes by controlling injection timing

This technology relates to a method of manufacturing carbon nanotubes, and a method of synthesizing various types of carbon nanotubes by controlling the injection timing of raw materials using the decomposition temperature of the material.

The physical properties of carbon nanotubes are determined by the diameter and chirality of the nanotubes, but existing technologies have the disadvantage of having to remove the support after synthesizing nanotubes because it is difficult to obtain catalysts of constant and uniform size. This technology proposes a method for manufacturing carbon nanotubes that can control the physical properties of synthesized carbon nanotubes using the decomposition temperature, which is a unique physical property of the material.

This is a groundbreaking technology that can create carbon nanotubes of various shapes by changing the injection method of catalysts, additives, and carbon sources.

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Key Features:

• Control the degree of contact between the catalyst and the additive by changing the injection position of the additive
• The reactor is located in the reaction area and includes an additive injection part whose distance to the heating area can be adjusted
• The catalyst is an iron precursor containing iron, and the additive is composed of a sulfur precursor containing sulfur
• Carbon nanotubes with various physical properties can be manufactured by analyzing the decomposition temperature of the material and controlling the injection method of the internal raw materials

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This technology was developed through support from the National Research Foundation of Korea's ultimate tensile strength carbon nanotube fiber manufacturing technology research project.

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