KR101368984B1 - Boat tray for manufacturing carbon nano tube - Google Patents

Abstract

A base frame mounted inside the reactor to manufacture carbon nanotubes according to the vapor deposition method, in which a liquid catalyst precursor is loaded; And a cover having a polygonal cross-section having a circular, streamlined or a plurality of bent portions, coupled to an upper side of the base frame to cover the base frame, and the vaporized liquid catalyst precursor condensed on an inner surface of the base frame opposite to the catalyst seed. A boat tray for manufacturing carbon nanotubes is introduced.

Description

BOOT TRAY FOR MANUFACTURING CARBON NANO TUBE}

The present invention relates to a boat tray for manufacturing carbon nanotubes installed in a reactor for using a liquid catalyst precursor in a carbon nanotube manufacturing apparatus according to the vapor deposition method.

Recent achievements in R & D have enabled nanocarbon materials to have a variety of beneficial physical and chemical properties, extending their applicability to various fields (for example, polymer reinforcement, pharmaceuticals, energy storage, or polymer catalyst support). It is a new material.

As a technology applying nano carbon materials, there are carbon nanotubes along with carbon nanofibers. The carbon nanotubes can also be synthesized by electric discharge, laser deposition, plasma chemical vapor deposition, thermochemical vapor deposition, or substrate use. There are many ways to do this, such as using free weather synthesis.

In the synthesis method as described above, a method using gaseous vapor deposition forms carbon nanotubes having extremely fine diameters by forming a high temperature and high pressure atmosphere in a state in which gas is injected into a reactor to cause chemical reaction of the injected gas.

As a prior art document, KR 10-2002-26663 A "Gas phase synthesis apparatus for synthesizing carbon nanotubes or carbon nanofibers and a synthesis method using the same", introduces a device for such a vapor deposition method. The carbon nanotubes are grown in a boat 260 using a gaseous carbon source and collected in the collector 250.

However, the conventional method for producing carbon nanotubes has a disadvantage in that the process of preparing a gas phase catalyst and a process of synthesizing carbon nanotubes, which are performed as a preliminary step of synthesizing carbon nanotubes, proceed in separate processes. Therefore, it can be said that there is a limit to mass production due to these problems.

In addition, due to such a method, the structure of the boat is not a structure that can be easily pulled out or removed from the outside, which is disadvantageous in the yield of collecting the produced carbon nanotubes in the collector.

Therefore, there is a need for a carbon nanotube manufacturing apparatus using a novel liquid catalyst without using such a gas phase or a solid catalyst, and a carbon nanotube through a detachable boat tray applicable to a carbon nanotube manufacturing apparatus using the liquid catalyst precursor. It was necessary to facilitate the harvesting, improve the yield and enable mass production.

It should be understood that the foregoing description of the background art is merely for the purpose of promoting an understanding of the background of the present invention and is not to be construed as an admission that the prior art is known to those skilled in the art.

Patent Document 1: KR 10-2002-26663 A

The present invention has been proposed to solve the above problems, in the vapor deposition type carbon nanotube manufacturing apparatus using a liquid catalyst precursor, by being detachable, so as to facilitate harvesting of carbon nanotubes, improve yield and mass production. The purpose is to provide a boat tray for manufacturing carbon nanotubes.

Boat tray for manufacturing carbon nanotubes according to the present invention for achieving the above object is, the base frame is mounted inside the reactor for producing carbon nanotubes according to the vapor phase deposition method, the liquid catalyst precursor is loaded; And a cover having a polygonal cross-section having a circular, streamlined or a plurality of bent portions, coupled to an upper side of the base frame to cover the base frame, and the vaporized liquid catalyst precursor condensed on an inner surface of the base frame opposite to the catalyst seed. It includes; a substrate to form a.

The base frame may have a panel shape extending in the longitudinal direction, and the substrate may have a tunnel shape extending in the longitudinal direction along the base frame.

The substrate is composed of a plurality of overlapping substrate portions having the same cross-sectional shape and reduced in size, the plurality of overlapping substrate portions overlapping the upper part of the base frame in order of size, and a plurality of overlapping substrate portions located inside. Communication holes are formed to allow the vaporized liquid catalyst precursor to form catalyst seeds on both inner surfaces of the plurality of overlapping substrate portions.

Coupling portions corresponding to lower ends of the plurality of overlapping substrate portions are formed on the upper surface of the base frame, so that the overlapping substrate portion is seated on the coupling portion to be stably coupled / separated from the base frame.

The substrate has a honeycomb structure formed on the inner surface of the substrate facing the base frame so that the vaporized liquid catalyst precursor forms a catalyst seed for each of the plurality of honeycomb interior spaces.

The substrate is installed in the base frame and has a circular, streamlined or polygonal cross section, each of which is formed into a lattice type cradle with a plurality of coupling holes and a plurality of honeycomb portions formed with a honeycomb space, respectively, and a honeycomb portion includes a base frame. Carbon nanotubes are grown on the inner side of the honeycomb space opened toward and may be detachable through the coupling holes of the cradle.

Auxiliary frames are installed in front and rear of the base frame, and the vaporized liquid catalyst precursor flowing out of the substrate may form catalyst seeds on the upper surface of the auxiliary frame.

The substrate may be composed of both side wall portions slidably coupled to the base frame and a plate-shaped ceiling portion slidably fitted to the top of both side wall portions.

Auxiliary frames are installed in front and rear of the base frame to allow the vaporized liquid catalyst precursor leaked to the outside of the substrate to form catalyst seeds on the upper surface of the auxiliary frame, and the auxiliary substrate covering the auxiliary frame is slidably fitted in the auxiliary frame. Can be combined.

According to the boat tray for manufacturing carbon nanotubes having the structure as described above, the boat tray is detachable and the carbon nanotubes are easily harvested and the yield is improved by covering the lower base frame with an efficient structure, especially the liquid catalyst precursor. Production is possible, making the process quick and simple.

In addition, when composed of a superposition type or a honeycomb structure can be formed a large number of catalyst seeds through the increase of the cross-sectional area has the advantage that the production yield is significantly improved.

1 is a view showing a carbon nanotube manufacturing apparatus is applied to the boat tray for manufacturing carbon nanotubes according to an embodiment of the present invention.
2 is a view showing a boat tray for manufacturing carbon nanotubes according to a first embodiment of the present invention.
Figure 3 is a view showing a cross section of the substrate of the boat tray for manufacturing carbon nanotubes shown in FIG.
Figure 4 is a view showing a boat tray for manufacturing carbon nanotubes according to a second embodiment of the present invention.
5 is a cross-sectional view of the boat tray for manufacturing carbon nanotubes shown in FIG.
Figure 6 is a view showing a boat tray for manufacturing carbon nanotubes according to a third embodiment of the present invention.
Figure 7 is a view showing a honeycomb portion of the boat tray for manufacturing carbon nanotubes shown in FIG.
8 is a view showing a boat tray for manufacturing carbon nanotubes according to a fourth embodiment of the present invention.

Hereinafter, a boat tray for manufacturing carbon nanotubes according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a view showing a carbon nanotube manufacturing apparatus is applied to a boat tray for manufacturing carbon nanotubes according to an embodiment of the present invention, Figure 2 is a view showing a boat tray for manufacturing carbon nanotubes according to a first embodiment of the present invention to be.

First, the carbon nanotube manufacturing method to which the boat tray for carbon nanotube manufacturing of the present invention is applied will be described first. As shown in FIG. 1, the boat tray extracting apparatus 1 includes a motor 2 and a motor 2 for generating rotational power. The transfer unit 3, which is linearly moved by converting the rotational force, and the tray seating plate 6 for placing and moving the boat trays 100 and 300 for synthesizing carbon nanotubes through the mover 3, and seating the tray on the boat tray. It consists of a lifting lifter 7 for raising and lowering the tray seating plate 6 so that the plate 6 is caught.

The power source 2 can also be applied as a solenoid instead of a motor, in which case the mover 3 can be deleted. The mover (3) is an input shaft (4) rotated through the motor (2) to convert the rotation to a linear movement, and an output shaft (5) to convert the rotation of the input shaft (4) to linear movement by being coupled to the ball screw Although configured, it may be variously configured to linearly move the tray seat plate (6).

The tray seating plate 6 has a shape capable of stably holding the boat tray 30 and allowing the boat tray to hang. The lifting lifter 7 is configured by applying a hydraulic cylinder or a pneumatic cylinder, but may be configured using a motor and a ball screw.

The boat tray extraction apparatus 1 is configured with a carbon nanotube manufacturing apparatus, and the carbon nanotube manufacturing apparatus is provided with a pair of opening and closing doors 11a and 11b for sealing a chamber space into which gas is injected. A reactor that is precisely controlled with a furnace, a heater 20 for heating the chamber space to make the reactor 10 a high pressure and a high temperature atmosphere, and a pair of guides installed along the chamber space of the reactor 10. The rails 12 and the boat trays 100 and 300 for synthesizing the carbon nanotubes according to the vapor deposition of the injected gas are located in the chamber space of the reactor 10 along the guide rail 12 and the reactor 10. The driver 40 for injecting and discharging gas into the chamber space of the chamber, and the controller 50 for controlling the atmosphere of the chamber space of the reactor 10 for synthesizing the carbon nanotubes.

The pair of opening and closing doors 11a and 11b installed in the reactor 10 may be automatically opened and closed. In this embodiment, the boat tray extraction device 1 is located in the same line as the reactor 10, preferably on the opposite side to which gas is injected. On the other hand, the carbon nanotube synthesis using the carbon nanotube manufacturing apparatus, the preparation of the work of the reactor 10-> the input of the boat tray (100,300) containing the liquid catalyst precursor-> to form a high temperature and high pressure atmosphere of the reactor 10 -> Gas injection and carbon nanotube synthesis-> Cooling of the reactor (10)-> Withdrawal of the boat tray (30)-> It is carried out by repeating the new work preparation process of the reactor (10), but as described above Since the boat tray extraction apparatus 1 is used in the process, the cooling of the reactor 10 and the withdrawal process of the boat tray can be rapidly performed without a worker's risk.

In addition, a process for preparing a separate gaseous catalyst may be omitted by vaporizing the liquid catalyst precursor and condensing it again to form a catalyst seed. The carbon nanotubes may be co-linked from the catalyst seed to produce carbon nanotubes on a substrate. It can be easily separated from the baseframe, increasing both production efficiency and yield.

2 is a view showing a boat tray for manufacturing carbon nanotubes according to a first embodiment of the present invention, wherein the boat tray of the present invention is mounted inside the reactor 10 to manufacture carbon nanotubes according to a vapor deposition method. A base frame 300 on which the liquid catalyst precursor C is loaded; And a cover having a polygonal cross section of a circular, streamlined or a plurality of bent portions, coupled to an upper portion of the base frame 300 to cover the base frame 300, and the vaporized liquid catalyst precursor C being formed on the base frame ( It includes; the substrate 100 to condense on the inner surface facing the 300 to form a catalyst seed.

The base frame 300 contains the liquid catalyst precursor C and is loaded or withdrawn from the reactor as described above. In addition, the substrate 100 is a cover having a polygonal cross section of a circular, streamlined or a plurality of bent portions, coupled to an upper side of the base frame 300 to cover the base frame 300. In addition, the substrate 100 allows the liquid catalyst precursor C vaporized from the base frame 300 to condense on the inner surface of the substrate frame 300 opposite to the base frame 300 to form a catalyst seed. A carbon source and water vapor are introduced into the reactor, and carbon nanotubes are grown from the catalyst seed formed on the substrate 100.

On the other hand, as shown, the auxiliary frame 320 is installed in front and rear of the base frame 300, the vaporized liquid catalyst precursor (C) leaked to the outside of the substrate 100 catalyst on the upper surface of the auxiliary frame 320 Allow seed to form. The auxiliary frame 320 may or may not contain the liquid catalyst precursor (C). Although the substrate 100 is not installed in the auxiliary frame 320, the vaporized liquid catalyst precursor C is condensed, and a catalyst seed is formed on the upper surface of the auxiliary frame 320, and carbon nanotubes are grown and loaded. Make sure

That is, when the auxiliary frame 320 is used, more effective carbon nanotubes can be produced and the yield can be increased.

3 is a cross-sectional view of the substrate of the boat tray for manufacturing carbon nanotubes shown in FIG. 2, and the substrate may be formed in various shapes. Substrate 100 is a cover having a polygonal cross section of a circular, streamlined or a plurality of bent portions, the base frame 300 is a panel shape extending in the longitudinal direction, the substrate 100 is a base frame 300 The tunnel shape is extended along the lengthwise direction. The combined shape of the base frame 300 and the substrate 100 may be considered as reminiscent of a vinyl house.

Figure 4 is a view showing a carbon nanotube manufacturing boat tray according to a second embodiment of the present invention, Figure 5 is a cross-sectional view of the carbon nanotube manufacturing boat tray shown in FIG. In the case of the boat tray for manufacturing carbon nanotubes according to the second embodiment, the substrate 100 is composed of a plurality of overlapping substrate parts 120 having a same cross-sectional shape and a reduced size, and a plurality of overlapping substrate parts 120. Covering the upper portion of the base frame 300 in the order of the size overlap, a plurality of communication holes 142 are formed in the overlapping substrate portion 140 located inside the vaporized liquid catalyst precursor (C) a plurality of It is to be able to form both catalyst seeds on the inner surface of the overlap substrate 120.

In addition, a coupling part 340 corresponding to each lower end of the plurality of overlapping substrate parts 120 is formed on an upper surface of the base frame 300 so that the overlapping substrate part 120 is seated on the coupling part 340 so that the base frame ( 300) can be stably combined / separated.

In the case of using such a structure, first, the liquid catalyst precursor (C) is contained in the base frame 300, and the overlapping substrate 120 is sequentially seated on the coupling part 340 of the base frame 300, and then in the order of the smallest to the largest. The overlapping substrate unit 120 is coupled to the base frame. In this configuration, as the plurality of substrates overlap each other, the catalyst seeds are formed on the inner surface of each overlapping substrate portion 120, and the yield of carbon nanotubes is remarkably improved as the surface area where the catalyst seeds are formed increases. .

In order to smoothly distribute the vaporized liquid catalyst precursor (C) and the carbon source gas and the water vapor, the plurality of communication holes 142 may be formed in the overlapping substrate part 140 located inside.

In such a structure, it will also be convenient for harvesting carbon nanotubes manufactured by separating the base frame 300 from the superimposed substrate 120 on the outside after growth of the carbon nanotubes.

In addition, in the case of the innermost overlapping substrate part 140, when the liquid catalyst precursor C grows from the base frame 300 at the bottom to the carbon nanotubes, the innermost overlapping substrate part 140 is prevented from growing. And the communication hole 142 may be blocked, which may interfere with the vaporization of the liquid catalyst precursor C, so that the amount of the liquid catalyst precursor C initially loaded according to the size of the overlapping substrate 140 is not too high. You will need to make appropriate adjustments. Alternatively, in some cases, since the size and number of the overlapping substrates 140 coupled to each other may be varied, it is also possible to correspond to the loading amount of various liquid catalyst precursors (C).

In addition, Figure 6 is a view showing a boat tray for manufacturing carbon nanotubes according to a third embodiment of the present invention, Figure 7 is a view showing a honeycomb portion of the boat tray for manufacturing carbon nanotubes shown in FIG.

In the boat tray for manufacturing carbon nanotubes according to the third embodiment, the substrate 100 has a honeycomb structure formed on an inner surface of the substrate 100 opposite to the base frame 300, and the vaporized liquid catalyst precursor C includes a plurality of internal honeycomb spaces. Each can form a catalyst seed. In addition, the substrate 100 is installed in the base frame 300 and has a circular, streamlined or polygonal cross section and is inserted into the coupling holes of the lattice holder 160 and the holder 160 having a plurality of coupling holes, respectively. Composed of a plurality of honeycomb portion 180 is formed with a space 182, the honeycomb 180 is a carbon nanotube grows on the inner surface of the honeycomb space 182 that is open toward the base frame 300, the cradle 160 ) To be attached and detached through a coupling hole (not shown).

In the case of the substrate 100, the lattice holder 160 and the honeycomb 180 are inserted into and coupled to the coupling holes of the holder 160. In the case of the cradle 160, a frame of the substrate is formed in a grid-like frame structure having a shape like a grate. And the honeycomb 180 is inserted into the coupling holes formed between the grate to block the coupling holes. The honeycomb unit 180 has a honeycomb space 182 formed therein, and the vaporized liquid catalyst precursor (CV) forms a catalyst seed in the honeycomb space 182 by directing the opening toward the base frame 300. . That is, the surface area in which the catalyst seeds are formed is increased by this configuration, and the catalyst precursor, carbon gas, and water vapor in the vaporized gaseous phase are increased in the honeycomb space 182, whereby carbon nanotubes can be formed more quickly. will be.

On the other hand, the honeycomb portion 180 is formed in the end engaging portion 184 is inserted into the engaging hole of the cradle 160, and after the formation of the carbon nanotubes after the formation of each honeycomb portion 180 Can be separated from the cradle 160 independently can be said to be an advantageous structure for harvesting carbon nanotubes.

On the other hand, Figure 8 is a view showing a boat tray for manufacturing carbon nanotubes according to a fourth embodiment of the present invention, the substrate 100 of the present embodiment both side wall portions 191 that are slidingly coupled to the base frame 300 And a plate-shaped ceiling portion 193 slidingly coupled to the upper ends of both sidewall portions 191. To this end, guide grooves are formed at upper ends of both side ends of the base frame 300, and both side wall portions 191 slide and fit along the guide grooves. In addition, a guide groove 192 is formed at an upper end of the inner side surfaces of the opposite side wall portions 191, and the ceiling portion 193 slides along the guide groove 192. Since the substrate 100 may form the side wall 191 and the ceiling 193 as a silicon flat plate substrate, various shapes of the substrate may be applied, and the assembling and disassembling of the substrate 100 may facilitate collection of carbon nanotubes. It has the advantage of being easy.

In addition, the auxiliary frame 320 is installed in front and rear of the base frame 300 so that the vaporized liquid catalyst precursor C leaked to the outside of the substrate 100 may form the catalyst seed on the upper surface of the auxiliary frame 320. And, the auxiliary frame 320 may be such that the auxiliary substrate portion 324 covering the auxiliary frame 320 is fitted by sliding. The auxiliary substrate 324 may be formed in various shapes. As shown in the drawing, the auxiliary substrate 324 may be formed of a ceiling made of silicon and sidewalls coupled thereto, and may be slidably fitted into the guide groove 322 of the auxiliary frame 320.

According to the boat tray for manufacturing carbon nanotubes having the structure as described above, the boat tray is detachable and the carbon nanotubes are easily harvested and the yield is improved by covering the lower base frame with an efficient structure, especially the liquid catalyst precursor. Production is possible, making the process quick and simple.

In addition, when composed of a superposition type or a honeycomb structure can be formed a large number of catalyst seeds through the increase of the cross-sectional area has the advantage that the production yield is significantly improved.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims It will be apparent to those of ordinary skill in the art.

100: substrate 120: overlapping substrate
142: communication hole 160: holder
180: honeycomb 300: base frame
320: auxiliary frame

Claims (9)

A base frame 300 mounted inside the reactor 10 to manufacture carbon nanotubes according to the vapor deposition method, in which a liquid catalyst precursor C is loaded; And
A cover having a polygonal cross section of a circular, streamlined or a plurality of bent portions, coupled to an upper portion of the base frame 300 to cover the base frame 300, and the vaporized liquid catalyst precursor C is the base frame 300. It includes; a substrate 100 to condense on the inner surface opposite to) to form a catalyst seed,
The base frame 300 is a panel shape extending in the longitudinal direction, the substrate 100 is a boat tray for manufacturing carbon nanotubes, characterized in that the tunnel shape extending in the longitudinal direction along the base frame (300). delete The method according to claim 1,
The substrate 100 is composed of a plurality of overlapping substrate portions 120 having the same cross-sectional shape and reduced in size, and the plurality of overlapping substrate portions 120 overlap the upper portion of the base frame 300 in order of size. A plurality of communication holes 142 are formed in the overlapping substrate part 140 positioned inside, and the vaporized liquid catalyst precursor C forms catalyst seeds on both inner surfaces of the plurality of overlapping substrate parts 120. A boat tray for manufacturing carbon nanotubes, characterized in that it is possible to do so. The method of claim 3,
Coupling portions 340 corresponding to lower ends of the plurality of overlapping substrate parts 120 are formed on the upper surface of the base frame 300, and thus, the overlapping substrate part 120 is seated on the coupling part 340. Boat tray for manufacturing carbon nanotubes, characterized in that the stably coupled / separated. The method according to claim 1,
The substrate 100 is a honeycomb structure is formed on the inner surface facing the base frame 300 so that the vaporized liquid catalyst precursor (C) to form a catalyst seed for each of the plurality of honeycomb interior spaces Boat tray for manufacturing carbon nanotubes. The method of claim 5,
The substrate 100 is installed in the base frame 300 and has a circular, streamlined or polygonal cross section and is inserted into the coupling holes of the grid holder 160 and the holder 160 having a plurality of coupling holes, respectively. 182 is formed of a plurality of honeycomb portion 180, the honeycomb portion 180 is carbon nanotubes are grown on the inner surface of the honeycomb space 182 opened toward the base frame 300, the cradle 160 Boat tray for manufacturing carbon nanotubes, characterized in that detachable through the coupling hole. The method according to claim 1,
Auxiliary frame 320 is installed in front and rear of the base frame 300 so that the vaporized liquid catalyst precursor (C) leaked to the outside of the substrate 100 can form a catalyst seed on the upper surface of the auxiliary frame 320. Boat tray for manufacturing carbon nanotubes, characterized in that. The method according to claim 1,
The substrate 100 is composed of both side wall portions 191 slidably coupled to the base frame 300 and a plate-shaped ceiling portion 193 slidably fitted to the top of both side wall portions 191. Boat tray for manufacturing carbon nanotubes. The method according to claim 8,
Auxiliary frame 320 is installed in front and rear of the base frame 300 so that the vaporized liquid catalyst precursor C leaked to the outside of the substrate 100 can form catalyst seeds on the upper surface of the auxiliary frame 320. , The auxiliary frame 320 is a boat tray for manufacturing carbon nanotubes, characterized in that the auxiliary substrate 324 covering the auxiliary frame 320 is fitted by sliding.

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