KR20160126400A - Electrospinning device for nano membrane containing temperature control system - Google Patents

Abstract

The present invention relates to an electrospinning apparatus for a nanomembrane and, more specifically, to an apparatus for preparing a nanomembrane by electrospinning a spinning solution, which includes a high concentration polymer, at a temperature that is higher than the room temperature, which is the existing electrospinning temperature. In addition, the present invention relates to an electrospinning apparatus for a nanomembrane which has an overflow system reusing a spinning solution, which has not been nanofiberized, and comprises a temperature adjustment device for, instead of maintaining the concentration of a spinning solution being electrospinned, maintaining the viscosity of the spinning solution, thereby not having to use a diluting agent.

Description

[0001] The present invention relates to a nano-membrane electrospinning device including a temperature control device,

The present invention relates to a nanomembrane electrospinning apparatus, and more particularly, to a nanomembrane electrospinning apparatus that includes an overflow system for reusing a polymer solution that is not nanofiberized and maintains the viscosity of the polymer solution To a nanomembrane electrospinning device comprising a regulating device.

In general, nanofiber refers to microfibers having a diameter of only a few tens to several hundreds of nanometers, and nonwoven fabrics, membranes, and braids made of nanofibers are used in daily life, agricultural, Widely used.

In addition, it is used in a variety of fields such as artificial leather, artificial suede, sanitary napkin, clothes, diaper, packaging materials, various kinds of materials for use in general merchandise, various filter materials, medical materials for gene delivery materials and anti-

The nanomembrane as described above is produced by an electric field. That is, the nanomembrane generates an electric repulsive force inside the polymer material by applying a high voltage electric field to the polymer material, which is the raw material, and the nanomembrane is manufactured and produced by breaking the molecules into a nano-sized thread shape.

At this time, the stronger the electric field, the finer the polymer material is, the smaller the nanometer membrane with 10 to 1000 nm of the thin film can be obtained.

An electrospinning device for manufacturing and producing nanomembranes having such a thinner is provided with a spray tank main tank in which a spray solution is filled, a metering pump for supplying a spray solution in a fixed quantity, and a plurality of nozzles for spraying spray solution A collector for collecting the fibers that are positioned at the lower end of the nozzle to emit radiation, and a voltage generator for generating a voltage.

The electrospinning device having the above-described structure includes a spinning liquid main tank filled with a spinning solution, a metering pump for supplying a fixed amount of the polymer spinning solution filled in the spinning solution main tank, and a polymer spinning solution in the spinning solution main tank A nozzle block having a plurality of nozzles arranged in a pin shape and arranged to discharge the polymer solution, and a collector disposed at an upper end of the nozzle and spaced apart from the nozzle by a predetermined distance in order to accumulate the polymer solution, And a unit including the apparatus.

A method of manufacturing a nanomembrane through such an electrospinning device is characterized in that a spinning solution in a spinning liquid main tank filled with a spinning solution is continuously and quantitatively supplied in a plurality of nozzles to which a high voltage is applied through a metering pump, A nanomembrane is formed on a long sheet conveyed to the units of the electrospinning device, and the nanomembrane is formed by stacking the nanomembrane After the sheet is repeatedly passed through each unit, the nano-membranes are laminated and then laminated, embossed or heat-pressed, and then needle-punched into a nonwoven fabric.

Here, the electrospinning device is divided into a bottom-up electrospinning device, a top-down electrospinning device, and a horizontal electrospinning device depending on the direction on the collector. That is, the electrospinning device has a configuration in which the collector is located at the upper end of the nozzle, and a bottom-up electrospinning device capable of producing a uniform and relatively thinner nanomembrane, a collector is disposed at the lower end of the nozzle, A bottom-up electrospinning device capable of increasing the production amount of nanomembranes per unit time, and a horizontal electrospinning device having a collector and nozzles arranged in a horizontal direction.

In the bottom-up electrospinning device, a spinning solution is injected through a nozzle of an upward nozzle block, and a spinning solution to be injected is deposited on a lower surface of the support to form a nanomembrane.

According to the above-described configuration, the elongated sheet, in which the spinning solution is sprayed through one of the nozzles of the bottom-up electrospinning device to form the nanomembrane, is transferred into the other unit and transferred into the other unit The nanomembrane is manufactured by repeatedly performing the above-described processes such as spraying a spinning solution through a nozzle on a long sheet and again forming a nano-membrane.

Here, the spinning solution injected through the nozzle of the nozzle block includes a polymer polymer and a solvent.

At this time, the polymer contained in the spinning solution for spinning of the spinning solution through the nozzle of the electrospinning nozzle block is laminated on the polymer long sheet to form the nanomembrane, but the polymer polymer discharged to the nozzle end in the spinning process is not fibrous It may fall into the nozzle block. The polymer polymer which is emitted through the nozzle in the normal electrospinning but can not be fused and overflows is 70 to 90% by weight of the total electrospun polymer polymer and is supplied to the storage tank again through the overflow system, And then supplied to the nozzle block for electrospinning, the overflowed spinning solution can be recovered and reused as the raw material of the nanomembrane, so that the raw material can be saved, the raw material fee can be reduced, and the manufacturing cost of the nanomembrane can be reduced can do.

On the other hand, the prior literature related to the conventional electrospinning is that the concentration of the polymer solution for electrospinning is fixed and electrospinning is performed. However, in order to fix the concentration of the polymeric solution, devices for concentration fixing and technical processes are required. In particular, in the case of electrospinning including an overflow system in which the polymer solution falling into the nozzle block can not be made into fibers, And the addition of a diluent causes a decrease in the production rate, a risk of explosion, and a problem of production cost.

In addition, due to the nature of electrospinning rather than melt spinning, a certain level of solvent is used to maintain the concentration in the field of manufacturing nanomembranes using existing electrospinning techniques. At this time, electrospinning is usually carried out with a low concentration of polymer solution, and the relative reduction of the solid content accumulated in the collector due to the use of the solvent during electrospinning is low, which requires much time to achieve the desired yield.

In addition, problems caused by the use of a low concentration polymer solution cause a problem that the quality of the nanomembrane is deteriorated due to a relatively high level of residual solvent remaining in the nanomembrane layer that is not polymeric in the collector.

Korean Patent No. 10-1162033 Korean Patent No. 10-1382571

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide an electrospinning device including an overflow system in which a polymer solution falling into a nozzle block without being electrospinned is recovered and reused for electrospinning, , The thickness of the nanomembrane diameter does not become larger than the diameter of the nanomembrane through the conventional electrospinning, and the high concentration of the polymer solution reused through the overflow system results in a high productivity of the nanomembrane integrated in the collector. An object of the present invention is to provide an electrospinning device capable of producing a nanomembrane.

The present invention relates to a nanomembrane electrospinning system comprising a reservoir for storing a polymer solution, a nozzle block through which the polymer solution is ejected, a collector for accumulating the nanomembrane, a power supply for applying a high voltage between the collector and the nozzle block, The present invention provides a nanomembrane electrospinning device including a temperature regulating device capable of uniformly controlling the viscosity of a polymer solution to be radiated.

In addition, the temperature regulating device includes a heating system or a cooling system capable of constantly controlling the viscosity of the polymer solution recovered through the overflow system, or includes both a heating system and a cooling system.

In addition, the viscosity of the polymer solution to be radiated is controlled to be constant from 1,000 cps to 2,000 cps.

In addition, the heating system may be any one of an electrothermal heater, a hot water circulating device, and a hot air circulating device, and the cooling system may be a chiller device.

In addition, the temperature control device is installed in any one of a storage tank, a nozzle block, and an overflow system.

The present invention provides a device capable of increasing productivity of a nanomembrane by increasing the concentration of a polymer solution while keeping the diameter of the nanomembrane constant by providing a nanomembrane electrospinning device including a temperature control device.

1 is a view schematically showing an electrospinning apparatus according to the prior art.
2 is a diagram illustrating a method of fabricating a nanomembrane having an overflow system and a temperature controller according to the present invention.
FIG. 3 is a front sectional view showing a tubular body equipped with a coil-shaped heating wire in an electrospinning apparatus having a temperature control device according to the present invention.
4 is a cross-sectional view taken along the line A-A 'in FIG.
FIG. 5 is a front sectional view showing a tubular body equipped with a linear heating wire in an electrospinning device having a temperature control device according to the present invention. FIG.
6 is a cross-sectional view taken along line B-B 'of FIG.
FIG. 7 is a front sectional view showing a tubular body equipped with a U-shaped pipe in an electrospinning apparatus having a temperature control device according to the present invention.
8 is a cross-sectional view taken along line C-C 'of FIG.
9 and 10 are graphs showing viscosity values of polyurethane and polyvinylidene fluoride by temperature.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1. Electrospinning method with overflow system

The method for fabricating a nanomembrane according to the present invention comprises an overflow system 200 for reusing a spinning solution which has been emitted from an electrospinning device (1) nozzle block (110) but can not be made into nanofibers.

Here, the electrospinning device 1 includes a case 102, a nozzle block 110, a collector 150, a power supply device 160 and an auxiliary belt device 170, and units 100 and 100 ' A second transfer pipe 216, a second transfer control device 218, a regeneration tank 230, and an overflow system 200 composed of the main storage tank 210, the second transfer pipe 216, the second transfer control device 218, and the regeneration tank 230.

At this time, it is preferable that the case 102 is made of a conductor, but the case 102 may be made of an insulator, or the case 102 may be applied with a conductor and an insulator mixedly used. It is possible.

The nozzle 42 of the nozzle block 110 can be a bottom-up type, a top-down type, and a bottom-up type. In particular, in an electrospinning apparatus to which the overflow system 200 is applied, bottom-up electrospinning is preferable. A plurality of nozzles 42 are arranged in a bottom-up, top-down, or horizontal manner and are supplied with the spinning solution from the main storage tank 210 or the regeneration tank 230. Hereinafter, the present invention will be described on the basis of bottom-up electrospinning, and the following bottom-up spinning is not intended to limit the scope of the present invention, but merely as an example, and various modifications are possible without departing from the technical gist of the present invention .

The tip of the nozzle 42 of the bottom-up electrospinning is preferably formed in a shape cut along a plane intersecting the axis of the cylinder with the axis of the cylinder. However, the tip of the nozzle 42 of a part of the nozzle block 110 has a trumpet- .

The collector 150 is disposed above the nozzle block 110 and is made of a conductor and is attached to the case 102 through an insulating member 152. It is also possible to remove the insulating member 152 when the case 102 is made of an insulator or when the upper part of the case 102 is used as an insulator and the lower part is used as a conductor.

The power supply unit 160 applies a high voltage between the nozzle 42 and the collector 150, which are vertically arranged in the nozzle block 110. The positive electrode of the power source device 160 is connected to the collector 150 and the negative electrode of the power source device 160 is connected to the nozzle block 110 through the case 102.

The nanomembrane manufactured through the nozzle 42 for discharging the spinning solution of the nozzle block 110 from the discharge port toward the collector 150 in the upward direction is deposited on the long sheet and moved while maintaining a uniform thickness.

In this case, the electrospun nanomembrane is a fiber having an average diameter of 50 to 1000 nm, which is produced by spinning a synthetic resin material capable of electrospinning, and the synthetic resin material capable of electrospinning is not limited. For example, polypropylene (PP) , Polyethylene terephthalate (PET), polyvinylidene fluoride, nylon, polyvinyl acetate, polymethylmethacrylate, polyacrylonitrile (PAN), polyurethane (PUR), polybutylene terephthalate (PBT) (PVA), polyethylene naphthalate (PEN), polyamide (PA), polyvinyl alcohol (PVA), polyethyleneimine (PVA), polyvinyl butyral, polyvinyl chloride, polyethyleneimine, polyolefin, (PE), polycaprolactone (PCL), polylactic acid glyceric acid (PLGA), silk, cellulose and chitosan. Among them, polypropylene (PP) Aromatic polyesters such as polyacrylates, polyamides, polyamides, polyimides, polyimide, poly (meta-phenylene isophthalamide), polysulfone, polyether ketone, polyetherimide, polyethylene terephthalate, polytrimethylene terephthalate, polyethylene naphthalate , Polyphosphazenes such as polytetrafluoroethylene, polydiphenoxaphospazene and polybis [2- (2-methoxyethoxy) phosphazene], polyurethane copolymers including polyurethane and polyether urethane , Cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate and the like are widely used commercially.

The spinning solution supplied through the nozzles 42 in the units 100 and 100 'is a solution in which a polymer as a synthetic resin material capable of electrospinning is dissolved in a suitable solvent. But are not limited to, for example, phenol, formic acid, sulfuric acid, m-cresol, thifluoroacetone hydride / dichloromethane, water, N-methylmorpholine N-oxide, chloroform, tetrahydrofuran Furan and aliphatic ketone groups such as methyl isobutyl ketone, methyl ethyl ketone, aliphatic hydroxyl group m-butyl alcohol, isobutyl alcohol, isopropyl alcohol, methyl alcohol, ethanol, aliphatic compounds such as hexane, tetrachlorethylene, acetone, Glycol, diethylene glycol, ethylene glycol, halogen compounds such as trichlorethylene, dichloromethane, aromatic compounds such as toluene, xylene, aliphatic Examples of the compound group include cyclohexanone, cyclohexane and ester groups such as n-butyl acetate, ethyl acetate, butyl cellosolve as the aliphatic ether group, acetic acid 2-ethoxy ethanol, 2-ethoxy ethanol, dimethyl amide, dimethyl formamide Acetamide, etc., and a plurality of kinds of solvents may be mixed and used. The spinning solution may contain an additive such as a conductivity improving agent.

The auxiliary belt device 170 is provided outside the collector 150. The auxiliary belt device 170 includes an auxiliary belt 172 rotating in synchronization with the conveyance speed of the long sheet, And an auxiliary belt driving device for driving the auxiliary belt driving roller 174 and the auxiliary belt 172.

At this time, it is preferable that the auxiliary belt roller 174 rotates the auxiliary belt 172 by the auxiliary belt driving device, but it is also possible to use a roller having a low friction coefficient to assist in transferring the long sheet without a separate driving device It is possible.

The main storage tank 210 stores a spinning solution which is a raw material of the nanomembrane. The main storage tank 210 is provided therein with a stirring device 211 for preventing separation or coagulation of the spinning solution.

The second transfer pipe 216 is composed of a pipe connected to the main storage tank 210 or the regeneration tank 230 and a valve 233. The second transfer pipe 216 is connected to the main storage tank 210 or the regeneration tank 230, And transfers the spinning liquid to the tank 220.

The second conveyance control device 218 controls the conveyance operation of the second conveyance pipe 216 by controlling the valves 212, 213 and 214 of the second conveyance pipe 216. The valves 212, 213 and 214 control the transfer of the spinning liquid from the main storage tank 210 to the intermediate tank 220 and control the transfer of spinning liquid from the regeneration tank 230 to the intermediate tank 220, And controls the amount of the spinning solution flowing into the intermediate tank 220 from the main storage tank 210 and the regeneration tank 230.

The control method as described above is controlled according to the liquid surface height of the spinning solution measured by the second sensor 222 provided in the intermediate tank 220 to be described later.

The intermediate tank 220 stores the spinning solution supplied from the main storage tank 210 or the regeneration tank 230, supplies the spinning solution to the nozzle block 110, and measures the level of the supplied spinning solution And a second sensor 222 are provided.

The second sensor 222 may be a sensor capable of measuring the liquid level height, and is preferably formed of, for example, an optical sensor or an infrared sensor.

A supply pipe 24 and a supply control valve 242 for supplying a spinning solution to the nozzle block 110 are provided in the lower part of the intermediate tank 220. The supply control valve 242 is connected to the supply pipe 240 And the like.

The regeneration tank 230 includes a stirring device 231 for storing the recovered circulating fluid and preventing separation or coagulation of the circulating fluid, and a first sensor (not shown) for measuring the liquid level of the recovered circulating fluid 232.

The first sensor 232 may be a sensor capable of measuring the height of the liquid surface, and is preferably formed of, for example, an optical sensor or an infrared sensor.

On the other hand, the spinning solution overflowed in the nozzle block 110 is recovered through the spinning solution recovery path 250 provided below the nozzle block 110. The spinning solution recovery path 250 recovers the spinning solution to the regeneration tank 230 through the first transfer pipe 251.

The first transfer pipe 251 is provided with a pipe and a pump connected to the regeneration tank 230 and the spinning liquid is transferred from the spinning solution recovery path 250 to the regeneration tank 230 by the power of the pump .

At this time, it is preferable that at least one of the regeneration tanks 230 is provided, and when there are two or more, the first sensor 232 and the valve 233 may be provided in plurality.

When the number of the regeneration tanks 230 is two or more, a plurality of valves 233 located above the regeneration tank 230 are also provided, so that a first transfer control device (not shown) The control unit controls at least two valves located at the upper part in accordance with the height of the liquid level of the first sensor 232 to control whether the spinning liquid is to be transferred to one of the plurality of regeneration tanks 230. [

2. Temperature control system of polymer solution (polymer)

A polymer solution is used for electrospinning. Generally, the existing inventions have a diluting agent and concentration adjusting devices to keep the concentration of the polymer solution constant. MEK (methyl ether ketone), THF (tetrahydrofuran), and alcohol are used as the diluent. The concentration of the polymer solution recovered through the overflow system 200 in addition to the polymer solution that is electrospun through the nozzle block 110 and accumulated in the collector 150 is determined by the concentration of the polymer solution initially supplied from the main storage tank 210 In the conventional electrospinning, a diluent is added to maintain the concentration of the polymer solution at a certain level. In addition, MEK or THF used as a diluent has a lower boiling point (b.p) (about 60 ° C) and is more easily scattered than the case of using DMAc alone as a solvent during electrospinning, thus facilitating the formation of nanomembrane.

However, in the present invention, instead of maintaining the concentration constant, the polymer solution of high concentration to be reused is reused after overflow, and the viscosity of the polymer solution is adjusted by using the temperature regulating device 60 to improve the efficiency of electrospinning And it is excellent in non-acidity at a high temperature condition for controlling a high viscosity without using a diluent to facilitate the formation of a nanomembrane of the polymer solution.

The viscosity refers to the ratio of the skew stress and the skewness rate of solute and solvent in the flowing liquid. In general, it is expressed in terms of the point dryness per cutting area, and the unit is dynscm-2gcm-1s-1 or poise (P). The viscosity decreases in inverse proportion to the temperature rise. If the viscosity of the solution is higher than the viscosity of the solvent, the flow of the liquid is distorted depending on the solute, and the flow rate of the liquid is lowered by the amount.

The viscosity of the solution is measured at various solution concentrations and extrapolated to a concentration of 0, and the relationship between the intrinsic viscosity (?) And the molecular weight M of the substance can be expressed as (?) = KMa. In this case, K, a is an integer depending on the type of solute or solvent and the temperature. Therefore, the viscosity value is affected by the temperature, and the degree of the change depends on the type of fluid. Therefore, when talking about viscosity, the values of temperature and viscosity should be specified.

When fabricating the nanomembrane with the electrospinning device 1, the kind of the polymer and the solvent used, the concentration of the polymer solution, the temperature and humidity of the spinning room, It is known to affect radioactivity. That is, the physical properties of the polymer (polymer solution) emitted from electrospinning are important. It has been considered that it is usually necessary to maintain the viscosity of the polymer at or below a predetermined viscosity at the time of electrospinning. This is because the higher the viscosity is, the more the nano-sized fibers are not radiated smoothly through the nozzle 42. If the viscosity is higher, the nano-sized fibers are not suitable for fiberization by electrospinning.

The present invention is characterized in that it includes a temperature control device 60 for maintaining and controlling the fiber viscosity suitable for electrospinning as described above.

The temperature regulating device 60 may include a heating device capable of keeping the viscosity of the polymer solution having a high viscosity reusable through overflow at a low level or a cooling device capable of maintaining a viscosity of the polymer solution having a relatively low viscosity at a high level .

In the temperature in the electrospinning region, the temperature of the region where the electrospinning occurs (hereinafter, referred to as 'radiation region') changes the surface tension of the spinning solution by changing the viscosity of the spinning solution, . ≪ / RTI >

That is, when the viscosity of the solution is relatively low, the nanomembrane having a relatively small fiber diameter is produced, and the nanomembrane having a relatively large fiber diameter is produced when the viscosity of the solution is relatively low because the temperature is relatively low.

In particular, in the case of the polymer solution, the concentration of the polymer solution re-supplied through the overflow tends to increase. By measuring the concentration of the polymer solution in the intermediate tank 220 and adjusting the temperature using the temperature- The viscosity can be kept constant (see FIG. 9).

The concentration measuring device for measuring the concentration has a contact type and a non-contact type in direct contact with a solution, and a capillary type concentration measuring device and a disk (DISC) type concentration measuring device can be used as a contact type. A concentration measuring apparatus using a concentration measuring apparatus using infrared or the like can be used.

The heating device of the present invention may be an electric heater, a hot water circulating device, a hot air circulating device, or the like. In addition, devices capable of raising the temperature in the same range as the above devices can be borrowed.

As an example of the heating device, the electro-thermal heater may be used in the form of a hot wire, and coil-shaped hot wires 62a and 62b may be mounted inside the tube 43 of the nozzle block 110, (See Figs. 3 to 8).

It is also possible to have the configuration of the linear heat lines 62a and 62b and the U-shaped pipe 63.

The heating device includes a nozzle block 110 through which the polymer solution is radiated, a tank (main storage tank, intermediate tank or regeneration tank) and an overflow system 200 (in particular, a tank And a transfer pipe).

The cooling device of the present invention may be a cooling device including a chilling device, and the means for maintaining a constant viscosity of the polymer solution is usually applicable. The cooling device may be provided in at least one of the nozzle block 110, the tank, and the overflow system 200 in the same manner as the heating device, and is used to maintain a certain viscosity of the polymer solution.

In addition, the temperature controller 60 of the present invention includes a sensor for measuring the concentration and a temperature control unit (not shown) for controlling the temperature accordingly.

The sensor is installed on the main storage tank 210, the intermediate tank 220, the regeneration tank 230, the nozzle block 110 or the overflow system 200 to measure the concentration of the flushing liquid in real time, The heating device and / or the cooling device is operated so that the viscosity is kept constant in the heating device 60.

The concentration of the polymer solution re-supplied through the overflow system 200 of the present invention is 20 to 40%, which is a high concentration solution compared to the concentration of the polymer solution used in conventional electrospinning of 10 to 18%.

In addition, the temperature of the polymer solution according to the concentration of the polymer solution is adjusted to 45 to 120 캜, rather than the room temperature, in order to maintain the viscosity of the polymer solution to be supplied again.

Meanwhile, the viscosity of the polymer solution of the present invention is preferably 1,000 to 5,000 cps, more preferably 1,000 to 3,000 cps. If the viscosity is 1,000 cps or less, the quality of the nanomembrane to be electrospun is poor, and if the viscosity is 3,000 cps or more, the discharge of the polymer solution from the nozzle 42 is not facilitated during electrospinning, and the production speed is slowed down.

Further, since the viscosity of the polymer solution is constant as the electrospinning progresses, the ease of spinning during electrospinning is excellent, and the concentration of the polymer solution is increased. As a result, the amount of solids in the nanomembrane integrated in the collector increases, There is an increasing effect.

In addition, the amount of residual solvent of the nanomembrane using electrospinning is smaller than that of the conventional electrospinning, and thus a nanomembrane of excellent quality can be manufactured.

The temperature control device 60 of the present invention controls the viscosity of the polymer solution through the temperature control of the nozzle block 110 or the main storage tank 210 by measuring the concentration of the intermediate tank 220 off- And an automatic system that can adjust the temperature of the solution according to the concentration measurement through an automatic control system on-line. The temperature control device 60 may be installed in any one of the overflow system 200 and the regeneration tank 230 or the main storage tank 210 as well as the nozzle block 110.

The polymer solution supplied from the main storage tank 210 to the nozzle block 110 through the main electrospinning device having the above configuration is electrospinned to the collector 150 through the nozzle 42 to laminate the nanomembrane layer.

 In the electrospinning step, the distance between the nozzle block 110 and the collector 150 is adjusted to 20 to 50 cm on average, the applied voltage is controlled to 10 to 40 kV, and the flow rate, temperature and humidity of the polymer solution Only 30 to 10% of the polymer solution electrospun in the nozzle block 110 becomes nanofiber, and the remaining 70 to 90% of the polymer solution is not nanofiberized. The polymer solution, which is not nanofiberized, is collected through the recovery tank 230 through the overflow system 200 and collected.

The polymer solution stored in the regeneration tank 230 may then be re-supplied to the nozzle block 110. In addition, the polymer solution may be introduced into the regeneration tank 230 from the main storage tank 210, The nanocomposite can be prepared without the diluent by keeping the viscosity constant while being supplied again to the nozzle block 110 through the storage step to be stored.

1: electrospinning device 42: nozzle
43: tube 60: thermostat
62a, 62b: heat line 63: pipe
100, 100 ': Unit 102: Case
110: nozzle block 150: collector
152: Insulation member 160: Power supply unit
170: auxiliary belt device 172: auxiliary belt
174: roller for auxiliary belt 200: overflow system
210: main storage tank 211: stirring device
212: valve 213: valve
214: valve 216: second transfer pipe
218: second transfer control device 220: intermediate tank
222: second sensor 230: regeneration tank
231: stirring device 232: first sensor
233: valve 240: supply piping
242: supply control valve 250: circulating fluid recovery path
251: first transfer pipe

Claims (6)

A main storage tank for storing the polymer solution, a nozzle block through which the polymer solution is discharged, a collector for accumulating the nanomembrane, a power supply device for applying a high voltage between the collector and the nozzle block, and a nanofiber electrospinning device including an overflow system As a result,
A nanomembrane electrospinning device comprising a temperature controller capable of constantly controlling the viscosity of a polymer solution to be radiated.
The method according to claim 1,
Wherein the temperature regulating device includes a heating device and a cooling device capable of constantly controlling the viscosity of the polymer solution recovered through the overflow system.
The method according to claim 1,
Wherein the viscosity of the polymer solution is constantly controlled from 1,000 cps to 3,000 cps.
3. The method of claim 2,
Wherein the heating device is selected from any one of an electrothermal heater, a hot water circulating device, and a hot air circulating device.
3. The method of claim 2,
Wherein the cooling device is a chilling device.
4. The method according to any one of claims 1 to 3,
Wherein the temperature regulating device is installed in any one of a storage tank, a nozzle block, and an overflow system.

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