KR20170062014A

KR20170062014A - Device for manufacturing carbon nanotube aggregates and carbon nanotube aggregates manufactured using same

Info

Publication number: KR20170062014A
Application number: KR1020150167321A
Authority: KR
Inventors: 김주한; 이영진; 임예훈; 최준원; 김지은; 오유진; 이영호; 최용진
Original assignee: 주식회사 엘지화학
Priority date: 2015-11-27
Filing date: 2015-11-27
Publication date: 2017-06-07
Also published as: KR102057363B1

Abstract

The present invention relates to an apparatus for manufacturing a carbon nanotube aggregate and a method for manufacturing a carbon nanotube aggregate using the same, and is characterized in that a means for promoting the initiation of fibrosis is provided at an upper end of a discharge port of a carbon nanotube (CNT) manufacturing apparatus. INDUSTRIAL APPLICABILITY According to the present invention, fiber aggregation and twisting can be easily imparted to the aggregate during the production of carbon nanotube aggregates, so that various applications are possible.

Description

TECHNICAL FIELD [0001] The present invention relates to a device for manufacturing a carbon nanotube aggregate and a method for manufacturing the carbon nanotube aggregate using the same. BACKGROUND ART [0002]

The present invention relates to an apparatus for producing a carbon nanotube aggregate and a method for producing the carbon nanotube aggregate using the same.

Recently, with the development of electronic technology, electronic products have been miniaturized, highly integrated, high-performance and light-weighted. Accordingly, interest in carbon nanotubes (CNTs) as an area of nano technology is increasing.

Carbon nanotubes (CNTs), a kind of carbon isotopes, have a diameter of several to several tens of nanometers and are several hundreds of micrometers to several millimeters in length. Since their report in the journal Nature in 1991 by Dr Iijima in 1991, Due to its physical properties and high aspect ratio, research has been conducted in various fields. The inherent properties of these carbon nanotubes are due to the sp ² bonds of carbon, stronger than iron, lighter than aluminum, and exhibit electrical conductivity similar to that of metals. According to the number of nanotubes, single-wall carbon nanotubes (SWNTs), double-wall carbon nanotubes (DWNTs), multi-walled carbon nanotubes (Multi- Wall carbon nanotube (MWNT), and can be divided into zigzag, armchair, and chiral structures depending on the asymmetry / chirality.

Carbon nanotubes can be classified into display devices, highly integrated memory devices, secondary cells and supercapacitors, hydrogen storage materials, chemical sensors, high strength / lightweight composite materials, static electricity elimination Composite materials, electromagnetic interference shielding (EMI / RFI shielding) materials, and the possibility of exceeding the limit of existing devices is being studied.

To date, most of the studies have focused on dispersing powdered carbon nanotubes as a reinforcing agent for composites, or for producing transparent conductive films using dispersion solutions, and have already been commercialized in some fields. However, in order to use carbon nanotubes in composite materials and transparent conductive films, dispersion of carbon nanotubes is important. Due to the strong van der Waals force of carbon nanotubes, they are dispersed at a high concentration and dispersed It is not easy to do. Also, in the case of a composite material in which carbon nanotubes are used as a reinforcement material, it is difficult to sufficiently manifest the excellent properties of carbon nanotubes.

Recently, carbon nanotube fibrillation researches have been carried out to fabricate carbon nanotube structures that fully manifest the properties of carbon nanotubes in recent years.

As a means for fiberizing carbon nanotubes, a dispersing solution, a winding means and the like can be generally used. Examples of the manufacturing method include solution spinning, array spinning, aerogel spinning, film twisting / rolling , Vapor-phase spinning method, and the like. The aerogel spinning can be performed by injecting a carbon source, a catalyst, a gas or the like into a manufacturing apparatus at a high temperature and shrinking the carbon nanotube aerogels by passing them through water, , The carbon nanotube aerogels can be formed into fibers by shrinking them by spraying water or an organic solvent. In another conventional embodiment, the turning nozzle is provided in the manufacturing apparatus, and the carbon nanotubes can be fiberized and twisted by the gas introduced from the nozzle.

The conventional apparatus and method may cause the carbon nanotubes to have a structure which is difficult to be twisted in the carbon nanotube fiberization step. In addition, in the conventional apparatus and method for imparting fiberization and twisting to carbon nanotubes, when the injection amount of the gas introduced from the nozzle is not constant, the carbon nanotube contacts with the nozzle and is likely to be broken .

Therefore, there is a need for studies on an apparatus and a method for improving the strength, productivity, and the like of the fiber by improving the efficiency, economy, and the like.

SUMMARY OF THE INVENTION The present invention provides a carbon nanotube aggregate manufacturing apparatus capable of efficiently producing a carbon nanotube aggregate.

The present invention also provides a method for producing a carbon nanotube aggregate using the production apparatus.

The present invention also provides a carbon nanotube aggregate produced by the above production apparatus and method.

In order to solve the above problems,

A reactor body having a reaction zone;

Heating means for heating the reaction zone;

A raw material supply unit provided at an upper end of the reaction zone; And

A carbon nanotube aggregate outlet disposed at a lower end of the reaction zone; And

And fibrosis promotion means provided between the lower end of the reaction zone and the outlet,

Wherein the fibrosis promoting means promotes fibrosis of the precursor by spraying a fluid on the carbon nanotube aggregate precursor discharged from the lower end of the reaction region toward the discharge port at a predetermined angle with the traveling direction of the carbon nanotube aggregate precursor, Lt; / RTI >

The fibrosis promoting means may include a jetting means for jetting the fluid at an angle of 1 to 90 degrees with respect to the traveling direction of the precursor.

The injection means may be provided with a ring-shaped nozzle communicating with a fluid supply port outside the reactor body and having a conical large-diameter flow path tapered at a predetermined angle with respect to the central axis of the reactor body.

The ring-shaped nozzle may have a concentric axis with the central axis of the discharge port.

In addition, the conically-large flow path may be formed with a helical groove deviated from the center axis of the discharge port so that the fluid supplied through the fluid supply port is helically injected through the ring-shaped nozzle.

In addition, the injection means may include a plurality of ring-shaped nozzles having the conical large-flow path at different heights.

In addition, a plurality of the fluid supply ports may be provided.

In addition to the ring-shaped nozzles, the fibrosis promoting means may further include additional nozzles therein.

The apparatus may further comprise a winding means downstream of the discharge port.

The present invention also provides a method for producing a carbon nanotube aggregate using the apparatus.

The method comprises the steps of injecting a feedstock into a reaction zone with a carrier gas via a feedstock;

Reacting a raw material injected into the reaction zone in a reactor to continuously form a carbon nanotube aggregate precursor;

Forming a fibrous carbon nanotube aggregate by spraying a fluid onto a precursor using the fibrosis promoting means; And

And collecting the formed carbon nanotube aggregate through an outlet.

The precursor may be a carbon nanotube aerogel.

In addition, the carrier gas may be an inert gas, a reducing gas, or a mixed gas thereof.

Also, the raw material may include a carbon source and a catalyst.

The fluid supplied and injected through the fibrosis promoting means may be a liquid, a gas, an aerogel or a combination thereof.

The present invention also provides a carbon nanotube aggregate produced according to such an apparatus or method.

Other details of the embodiments of the present invention are included in the following detailed description.

The apparatus for producing a carbon nanotube aggregate according to the present invention is characterized in that a fibrous material promoting means having a jet opening of a specific type is provided at the upper end of the outlet so that carbon nanotube aggregates, The disconnection of the tube fibers can be minimized and the twist can be easily imparted. In addition, the production efficiency can be improved by suppressing the upward flow generated at the hood boundary of the reactor and the outlet, so that various applications can be made to CNT fiber, mat, and the like.

Figures 1 and 2 schematically show various devices according to the prior art.
Figure 3 schematically depicts an apparatus according to various embodiments of the present invention.
Figure 4 schematically illustrates the airflow of a conventional outlet and an outlet according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms "comprises", "having", or "having" in this specification are intended to be inclusive in a manner that the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, Does not exclude the possibility that other features, numbers, steps, operations, components, components, or combinations thereof may be present or added.

It is also to be understood that when an element is referred to herein as being "connected" or "connected" to another element, it is understood that the element may be directly connected or connected to the other element, .

The term "carbon nanotube fibers" in the present specification can refer to all carbon nanotubes formed by growing in a fiber form or by fusing a plurality of carbon nanotubes in a fiber form.

As used herein, the term "aggregate" may be understood to mean a plurality of aggregates comprising one or more entities that are not singular representations of a substance, both of which may be described interchangeably with an aggregate (both can be represented as sock or aggregates) .

Also, the singular expressions include plural expressions unless otherwise specified.

In addition, the term "forming" may be described in the present specification in combination with "processing ", and may be understood to form a desired shape by applying heat or pressure.

Hereinafter, an apparatus for manufacturing a carbon nanotube aggregate, a carbon nanotube aggregate, and a method for manufacturing the same will be described in detail.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 schematically shows a reactor internal structure according to the prior art; FIG. According to the apparatus of FIG. 1, when the spinning solution is discharged into the reactor, the carbon compound and the catalyst contained in the spinning solution are injected toward the inner wall of the reactor at a high temperature to react, Which makes it difficult to produce uniform carbon nanotube fibers.

On the other hand, in the case of a carbon nanotube having a long length, cross-link is physically formed due to the interaction of the carbon nanotubes with each other by a π-π interaction. Accordingly, in order to improve the strength of the fibers and mats made of carbon nanotubes, it may be effective that the aggregates are composed of carbon nanotubes having a long length.

The carbon nanotubes may be manufactured in the form of, for example, carbon nanotube fibers, carbon nanotube mat, non-woven fabric, or the like depending on purposes and purposes. Techniques for producing carbon nanotube aggregates include solution spinning, array spinning, aerogel spinning, twisting / rolling of films, and the like.

Among them, direct spinning is carried out by adding a catalyst to a carbon source and injecting the carbon nanotube into a vertical furnace at a constant speed together with the transport gas to synthesize carbon nanotubes in the reactor, Carbon nanotube fibers are continuously produced.

A conventional apparatus for producing a carbon nanotube aggregate is exemplified as shown in FIG. 2. Specifically, as a general example of the aerogel spinning method, there is a method of shrinking a carbon nanotube aerogel by allowing it to pass through water, For example, water or an organic solvent is injected into the carbon nanotube aerogels to shrink the carbon nanotubes to form fibers. However, such a conventional apparatus and method have a problem that it is difficult to impart a twist to the carbon nanotubes. In order to solve the above problems, for example, the conventional method can impart fiberization and twisting to carbon nanotubes by providing a swirl nozzle in a manufacturing apparatus and introducing gas. However, according to the conventional manufacturing apparatus, since the nozzles of the jetting ports are provided in a protruding form, when the amount of gas introduced from the jetting ports is not the same, there arises a problem that the carbon nanotube aerogels are cut off due to contact with the nozzles .

In order to solve the above problems, the present invention provides a device for manufacturing a carbon nanotube aggregate and a method for manufacturing the carbon nanotube aggregate using the same.

Specifically, the present invention provides a reactor comprising: a reactor body having a reaction zone;

Heating means for heating the reaction zone;

A raw material supply unit provided at an upper end of the reaction zone; And

FIG. 3 is a schematic view of an apparatus for manufacturing a carbon nanotube aggregate according to the present invention for solving the problems of the prior art. As can be seen from FIG. 3, the fibrosis promoting means may include a jetting means for jetting the fluid at an angle of 1 to 90 degrees with respect to the traveling direction of the precursor.

In order to minimize the above-mentioned problem, the injection angle of the injection port may be set to be smaller than the injection angle of the carbon nanotube, Can range from 1 to 90 degrees about the vertical axis of the reactor, and can be, for example, from 10 to 80 degrees, and preferably from 25 to 75 degrees. The apparatus according to the present invention is configured such that the flow direction of the jet is formed in an oblique shape with respect to the traveling direction of the carbon nanotube aggregate so that the suction and drawing effect in the discharge direction Can be imported.

In addition, all three types of fibrosis promotion means 10 shown in the drawings are provided with injection openings or injection nozzles which do not protrude from the inner wall of the discharge port.

That is, the injection means may be provided with a ring-shaped nozzle in a columnar inner wall which communicates with a fluid supply port outside the reactor main body and has a conical large flow path 12 tapered at a predetermined angle with respect to the central axis of the reactor main body.

In addition, a plurality of the fluid supply ports may be provided.

In addition to the ring-shaped nozzles, the fibrosis promoting means may further include additional nozzles 14 therein. Further, the additional nozzles 14 may be provided at one or more predetermined or predetermined intervals. For example, one or more nozzles may be provided so as to be symmetrical with respect to the center axis of the discharge port, and the number and the interval may be appropriately selected. For example, the number of the nozzles may be two, and may be an odd number or an even number. For example, three or more nozzles may be provided. In any case, it is preferable not to protrude from the inner wall of the column cylinder.

In addition, the conical large flow path may be formed with a spiral groove 15 deflected from the center axis of the discharge port so that the fluid supplied through the fluid supply port is helically injected through the ring-shaped nozzle.

The injection port is perpendicular to the flow direction of the supply source supplied by the supply unit and is provided in a direction deviated from the center of the discharge port to induce injection in the helical flow direction. As shown in Type 3 of FIG. 2, by providing the helical spraying means, the current of the airflow can be helically guided to easily impart twist to the carbon nanotube aggregate.

According to one embodiment, the hole size (L) of the injection port (nozzle) can be appropriately adjusted in accordance with conditions such as the kind of jet sprayed.

3, the injection means may include a plurality of ring-shaped nozzles having the cone-shaped flow paths at different heights (12, 13).

For example, it may be configured in such a way that a slight twist is imparted by one or more ring-shaped nozzles located at a first height and a twist is imparted by one or more ring-shaped nozzles located at a second height, The height and velocity conditions for the injection nozzle can be adjusted accordingly.

Unlike the conventional apparatus for generating the upward flow at the boundary between the reactor and the outlet, the apparatus according to the present invention can prevent the generation of the upward flow as described above, In the case of increasing the flow rate under the same conditions, it is possible to eliminate the upward flow by inducing the development of the downward flow, and FIG. 4 shows the flow of air generated at the boundary between the reactor and the outlet hood.

According to an embodiment of the present invention, the raw material supply portion may include one or more raw material injection ports. For example, the raw material supply portion may include a carbon source injection portion, a catalyst injection portion, and a gas injection portion, May be injected together with the gas.

According to one embodiment, the reactor can be, for example, a chemical vapor deposition reactor, for example, a fluidized bed reactor, and can be, for example, tubular, boxed, horizontal or vertical. The material of the reactor may be, for example, quartz, graphite, or the like, but is not limited thereto.

The heating furnace provided in the manufacturing apparatus according to the present invention is not particularly limited as long as it is used as a general reactor heating means, and may include, for example, an electric type, a plasma heating type, and the like.

The electric system may include, for example, a hydrothermal furnace, a high-temperature vacuum furnace, a redox furnace furnace, a vertical furnace furnace, a horizontal furnace furnace, a large-capacity furnace furnace, and the like.

The electric furnace may include a heating element, a refractory material, a temperature sensor, a control unit, and the like. The heating element may include a metal heating element and a non-metallic heating element. The metal heating element may include a metal heating element including molybdenum, tungsten, platinum, tantalum, and the like and a metal such as iron, chromium, An alloy heating element and the like. The non-metallic heating element may include, for example, silicon carbide, molybdenum disilicide, lanthanum chromite, graphene, zirconia, and the like. The refractory agent may include, for example, a ceramic fiber board, a ceramic blanket, or the like, and may serve to minimize heat loss generated in the internal heating element by insulating the electric furnace from the outside. The temperature sensor is a device for detecting the temperature inside the electric furnace, and may be a contact type or a non-contact type. For example, the contact type temperature sensor may include a thermocouple type temperature sensor, and the noncontact type temperature sensor may include a radiation type temperature sensor or the like. The controller may control the temperature and the power, and may include a detection unit and an operation unit that can adjust the power based on the temperature change data obtained through the temperature sensor.

According to one embodiment, the heating means may be provided in the form of wholly or partially enclosing the outside of the reactor body, and the reactor may have heat resistance and pressure resistance. The size of the reactor is not particularly limited and may be appropriately set according to the amount of the introduced source. Specifically, the reactor having the heat resistance and the pressure resistance may be formed of a material including quartz, graphite, stainless steel, aluminum steel, silicon carbide, ceramics, glass, or the like, During the aggregation synthesis process, all or a part of the reactor may be heated to 1,000 to 3,000 DEG C to sustain the growth of CNTs. The temperature in the reactor can affect the diffusion rate of carbon. The growth rate of the CNT aggregate can be controlled by adjusting the temperature in the reactor. In general, the higher the temperature, the faster the CNT aggregate growth rate and the crystallinity and the strength can be increased.

The carbon nanotube aggregate production apparatus includes a gas and a CNT aggregate discharge port, and the discharge port may be provided at a lower portion or an upper portion of the manufacturing apparatus while being connected to the reactor. The synthesized CNT aggregate can be continuously grown and moved together with the gas and discharged to the discharge port while moving from the upper part of the reactor to the lower part or from the lower part to the upper part.

According to one embodiment, by combining the manufacturing apparatus with an apparatus other than the constituent unit described above, the present invention can be applied to simplification and application of the synthesis process of carbon nanotube aggregates. For example, in addition to the CNT aggregate production apparatus constituting unit, a feeder, a post-treatment apparatus, a cleaning apparatus, and the like may be combined to perform additional processing. For example, the CNT aggregate production apparatus may further include a winding means and the like in addition to the constituent elements to easily obtain the CNT aggregate. The winding means may comprise conventional means such as winding rolls, for example. In addition, for example, an IR lamp or the like may be further provided to remove a solvent or the like used for forming the carbon nanotube aggregate.

According to an embodiment of the present invention, there is provided a method of manufacturing a carbon nanotube aggregate using the manufacturing apparatus.

Specifically, the method includes the steps of injecting a raw material into a reaction zone together with a carrier gas through a supply unit;

And collecting the formed carbon nanotube aggregate through an outlet.

According to one embodiment, the feedstock may comprise a carbon source and a catalyst.

The carbon source may be gaseous or liquid and may be, for example, ethane, ethylene, ethanol, methane, methanol, propane, propene, propanol, acetone, xylenes, carbon monoxide, chloroform, acetylene, ethylacetic acid, (Meth) acrylates such as ethylene glycol, propylene glycol, glycol, ethyl formate, mesitylene (1,3,5-trimethylbenzene), tetrahydrofuran, dimethylformamide, carbon tetrachloride, naphthalene, anthracene, dichloromethane, Pentene, hexene, benzene, carbon tetrachloride, toluene, or combinations thereof. In addition, when the carbon compound contained in the raw material supply source is benzene, the carbon source included in the raw material gas may include benzene, propylene, ethylene, methane, and the like as the carbon source included in the raw material gas. By selecting the same or smaller molecular weight, a person skilled in the art can adjust it according to the process conditions.

The catalyst may be in liquid or gaseous form and may act as a synthesis initiator in the synthesis of CNT aggregates. The catalyst may include, for example, iron, nickel, cobalt, copper, yttrium, platinum, ruthenium, molybdenum, vanadium, titanium, zirconium, palladium, silicon, A sulfide, a sulfide, a nitrate, a mixture, an organic complex, or a combination thereof, and may be included as a catalyst precursor. For example, the catalyst may be a compound such as metallocene collectively referred to as bis (cyclopentadienyl) metal, which is a new organometallic compound in which cyclopentadiene and a transition metal are bonded in a sandwich structure, and the cyclopentadiene is a compound It is possible to perform electrophilic reaction, acylation and alkylation reaction.

Examples of the metallocene include ferrocene, cobaltocene, osmosene, and ruthenocene. Among them, ferrocene, which is a compound of iron, is relatively thermally stable compared to most metallocenes and is not decomposed to 470 ° C .

Specific examples ferrocene of the catalyst, of molybdenum hexa-carbonyl, cyclopentadienyl cobalt -dicarbonyl _{((C 5 H 5) Co} (CO) 2), nickel-dimethyl glyoxime, ferric chloride (FeCl _3), ferrous acetate hydroxide , Iron acetylacetonate or iron pentacarbonyl. If the amount of the catalyst is larger than that of the carbon source, the catalyst may act as an impurity, which may be difficult to obtain a high-purity CNT aggregate, and may be a factor that hinders the thermal, electrical, and physical properties of the CNT aggregate. Can be appropriately selected and adjusted. In addition, the catalyst may be supplied in a dissolved state in an organic solvent containing at least one compound such as water, ethanol, methanol, benzene, xylene, toluene and the like.

The catalyst may be, for example, a sulfur-containing compound as an auxiliary catalyst, and specific examples thereof include sulfur-containing aliphatic compounds such as methylthiol, methylethylsulfide, dimethylthioketone and the like; Sulfur-containing aromatic compounds such as phenylthiol, diphenylsulfide and the like; Sulfur-containing heterocyclic compounds such as pyridine, quinoline, benzothiophene, thiophene and the like, preferably thiophene. Thiophene reduces the melting point of the catalyst and removes the amorphous carbon, allowing synthesis of high purity carbon nanotubes at low temperatures. The content of the catalytic activator may also affect the structure of the carbon nanotubes. For example, when 1 to 5% by weight of thiophene is mixed in ethanol, an aggregate composed of multi-walled carbon nanotubes can be obtained , And when thiophene is mixed to ethanol in an amount of 0.5% by weight or less, an aggregate composed of single-walled carbon nanotubes can be obtained.

In addition, physical properties such as the tensile elastic modulus of the carbon nanotube aggregate may be influenced by conditions such as heat treatment temperature during the process. Therefore, a catalyst such as a boron compound or the like may be used to reduce the temperature and time required for the production process of the aggregate .

According to one embodiment, the synthesis rate, length, diameter, surface state, etc. of the CNT aggregate can be controlled by adjusting the concentration of the catalyst or the catalyst precursor. For example, if the concentration of the catalyst to be injected is increased, the number of the CNT aggregates to be synthesized increases because the number of the catalyst microparticles increases in the reactor, and thus the diameter of the carbon nanotubes constituting the CNT aggregate can be reduced. On the other hand, if the concentration of the catalyst is decreased, the CNT diameter constituting the aggregate may increase because the number of CNT aggregates to be produced is decreased.

According to one embodiment, the gas may be an inert gas, a reducing gas, or a combination thereof. Examples of the inert gas include argon and nitrogen, and examples of the reducing gas include hydrogen and ammonia. The gas may comprise argon, nitrogen, hydrogen, helium, neon, krypton, chlorine or combinations thereof, and may include, for example, hydrocarbons, carbon monoxide, ammonia, hydrogen sulfide or combinations thereof. The gas is discharged together with the amorphous carbon or impurities that can be generated in the CNT synthesis process, thereby improving the purity of synthesized CNTs and serving as a carrier for moving the catalyst and the CNT aggregate. As well.

According to one embodiment, the method of injecting the gas, the catalyst, and the carbon source is not particularly limited, and bubbling, ultrasonic jet injection, vaporization injection, spraying spray, pulse introduction using a pump, Each of the supply parts can be applied in different ways. For example, the gas linear velocity in the supply part may be 10 to 5000 cm / min and may be injected at a linear velocity of 20 to 3500 cm / min, for example, but the type of transport gas, The kind of catalyst and the like.

According to the manufacturing apparatus and method as described above, the retention time of the carbon nanotube aggregates in the spiral reaction space is increased, so that the agglomerate composed of the carbon nanotubes having a longer length can be formed, . For example, the carbon nanotube aggregates according to the present invention may have a length ranging from several tens of micrometers to several centimeters. The carbon nanotube agglomerates of several centimeters as described above are excellent in mechanical properties such as strength, tensile strength and elasticity, and have increased electric conductivity and specific surface area, so that they can be applied to various fields overcoming conventional limitations.

The fluid ejected from the ejection orifice may include water, gas or organic solvent, and may be a liquid, a gas, an airgel, or a combination thereof. For example, droplets of liquid, gas, vapor, or combinations thereof may be sprayed.

The gas may include, for example, a nitrogen gas, a hydrogen gas, an argon gas, or the like, but is not limited thereto. For example, steam instead of gas or steam of an organic solvent may be used.

The organic solvent may include water, an organic solvent, a monomer, an acid, a base, and the like. For example, the organic solvent may have a boiling point of 40 ° C or higher.

According to one embodiment, the carbon nanotube agglomerates according to the present invention may be used in combination with an antimicrobial agent, a releasing agent, a heat stabilizer, an antioxidant, a light stabilizer, a compatibilizer, a dye, an inorganic additive, a surfactant, a nucleating agent, a coupling agent, , Binders, colorants, lubricants, antistatic agents, pigments, flame retardants, and mixtures of one or more of the foregoing. Such an additive may be included within a range that does not affect the physical properties of the carbon nanotube aggregate according to the present invention.

The agglomerate according to the present invention may be blended with a polymer resin and molded or processed by extrusion, injection or extrusion and injection molding to form a product. The production method of the product may be suitably used in a conventional method used in the art And is not limited to the above description.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It does not.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. something to do. It is therefore intended that the scope of the invention be defined by the claims appended hereto and their equivalents.

Claims

A reactor body having a reaction zone;
Heating means for heating the reaction zone;
A raw material supply unit provided at an upper end of the reaction zone; And
A carbon nanotube aggregate outlet disposed at a lower end of the reaction zone; And
And fibrosis promotion means provided between the lower end of the reaction zone and the outlet,
Wherein the fibrosis promoting means promotes fibrosis of the precursor by spraying a fluid on the carbon nanotube aggregate precursor discharged from the lower end of the reaction region toward the discharge port at a predetermined angle with the traveling direction of the carbon nanotube aggregate precursor, .

The method according to claim 1,
Wherein the fibrosis promoting means comprises ejecting means for ejecting fluid at an angle of 1 to 90 degrees with respect to a traveling direction of the precursor.

The method according to claim 1,
Wherein the injecting means is provided with a ring-shaped inner wall in a column-shaped inner wall which communicates with a fluid supply port outside the reactor body and has a conical large flow path tapered at a predetermined angle with respect to the central axis of the reactor body.

The method of claim 3,
Wherein the ring-shaped nozzle has a concentric axis with the center axis of the discharge port.

The method of claim 3,
Wherein the conically large flow path is formed with a helical groove deviated from the center axis of the discharge port so that the fluid supplied through the fluid supply port is helically injected through the ring shaped nozzle.

The method of claim 3,
Wherein the spraying means comprises a plurality of ring-shaped nozzles having the cone-shaped flow paths at different heights.

The method of claim 3,
And a plurality of said fluid supply ports are provided.

The method of claim 3,
Wherein the fibrosis promoting means further comprises a nozzle in addition to the ring-shaped nozzle.

The method according to claim 1,
And further comprising a winding means downstream of the discharge port.

A method for producing a carbon nanotube aggregate using the apparatus of any one of claims 1 to 9.

11. The method of claim 10,
Injecting the feedstock into the reaction zone with the carrier gas via the feedstock;
Reacting a raw material injected into the reaction zone in a reactor to continuously form a carbon nanotube aggregate precursor;
Forming a fibrous carbon nanotube aggregate by spraying a fluid onto a precursor using the fibrosis promoting means; And
And collecting the formed carbon nanotube aggregate through an outlet.

12. The method of claim 11,
Wherein the precursor material is a carbon nanotube aerogel.

12. The method of claim 11,
Wherein the carrier gas is an inert gas, a reducing gas, or a mixed gas thereof.

12. The method of claim 11,
Wherein the raw material comprises a carbon source and a catalyst.

12. The method of claim 11,
Wherein the fluid supplied and injected through the fibrosis promoting means is a liquid, a gas, an airgel, or a combination thereof.

A carbon nanotube aggregate produced by the method of claim 10.