WO2012077870A1 - Dispositif pour la fabrication de nanofibres - Google Patents

Dispositif pour la fabrication de nanofibres Download PDF

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Publication number
WO2012077870A1
WO2012077870A1 PCT/KR2011/003061 KR2011003061W WO2012077870A1 WO 2012077870 A1 WO2012077870 A1 WO 2012077870A1 KR 2011003061 W KR2011003061 W KR 2011003061W WO 2012077870 A1 WO2012077870 A1 WO 2012077870A1
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WO
WIPO (PCT)
Prior art keywords
electric field
devices
power supply
field radiating
main controller
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PCT/KR2011/003061
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English (en)
Korean (ko)
Inventor
이재환
김익수
Original Assignee
주식회사 톱텍
신슈 다이가쿠
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Publication of WO2012077870A1 publication Critical patent/WO2012077870A1/fr

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D13/00—Complete machines for producing artificial threads
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
    • D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures

Definitions

  • the present invention relates to a nanofiber production apparatus.
  • Patent Document 1 a nanofiber production apparatus in which a plurality of electric field radiating devices are arranged along a predetermined conveying method in which a long sheet is conveyed.
  • the nanofiber manufacturing apparatus 900 of patent document 1 has a long sheet by the conveying apparatus 910 which conveys the long sheet W at a predetermined
  • a plurality of electric field radiating devices 930 are arranged in series along a predetermined conveying direction A in which (W) is conveyed.
  • Each of the plurality of electric field radiators 930 includes a collector 950 (not shown) located on one side of the long sheet W and the other of the long sheet W. As shown in FIG.
  • a nozzle block 920 positioned at a position facing the collector 950 on the side surface of the filter 950 and having a plurality of nozzles 922 for discharging the polymer solution toward the long sheet W; And a power supply unit 960 (not shown) for applying a high voltage to the nozzle.
  • nanofiber manufacturing apparatus 900 of patent document 1 since it becomes possible to manufacture nanofibers using the some electric field radiating apparatus 920, it becomes possible to mass-produce nanofibers with high productivity.
  • an object of the present invention is to provide a nanofiber manufacturing apparatus capable of mass-producing a nanofiber with high productivity without deterioration of safety, which has been made to solve the above problems.
  • the nanofiber manufacturing apparatus of the present invention includes a conveying apparatus for conveying a long sheet at a predetermined conveying speed, a collector located on one side of the long sheet, and the other side of the long sheet. It has a nozzle block which is located in the position facing the said collector in which it has a some nozzle which discharges a polymer solution toward the said elongate sheet, and the power supply apparatus which applies a high voltage between the said collector and the said some nozzle, Nano having a plurality of electric field radiating device arranged in series along a predetermined conveying direction in which the long sheet is conveyed by the conveying device, and a main control device for controlling the operation of the conveying device and the plurality of electric field radiating device In the fiber manufacturing apparatus, the main controller monitors the amount of current supplied from each power supply apparatus for each electric field radiation apparatus, When detecting that a current larger than the first set current amount is supplied from one or more of the plurality of power supplies, a signal for stopping current supply to the one or more power supplies (herein
  • a signal for decelerating the conveying speed with respect to the conveying device (hereinafter referred to as a conveying speed deceleration) in order to transmit a stop signal and to put a cumulative accumulation amount of nanofibers per unit area deposited on the long sheet within a predetermined range. Signal).
  • the main controller when the main controller is detected that a current smaller than a predetermined second predetermined current amount is supplied from one or a plurality of power supply devices, the one or more power supplies. It is preferable to give a warning signal that the field radiator to which the power supply belongs to is abnormal.
  • the main controller has a number of the power supply units that have been supplied with current in the first period before decelerating the transfer speed, and n after the deceleration of the transfer speed. Assuming that the number of the power supply units that supply power in the second period is m units, the transfer speed in the second period is controlled to be "m / n" times the transfer speed in the first period. It is desirable to.
  • an air permeability measuring device which is disposed at the rear end in the conveying direction of the plurality of field radiating devices and measures the air permeability of the long sheet in which the nanofibers are deposited by the field radiating device is further included. It is preferable that the said main control device controls the said conveyance speed based on the ventilation degree measured by the said ventilation degree measurement apparatus.
  • a thickness measuring device disposed at a rear end of the plurality of field radiating devices in the conveying direction and measuring the thickness of the long sheet in which the nanofibers are deposited by the field radiating device is further provided. It is preferable that the main control device controls the conveyance speed based on the thickness measured by the thickness measuring device.
  • each of the plurality of electric field radiating devices is provided with a temperature sensor, and the main controller monitors the output of each temperature sensor for each of the electric field radiating devices and simultaneously sets a predetermined setting.
  • the main controller monitors the output of each temperature sensor for each of the electric field radiating devices and simultaneously sets a predetermined setting.
  • each of the plurality of electric field radiating devices is provided with a smoke sensor, and the main controller monitors the output of each smoke sensor for each of the electric field radiating devices.
  • the main controller monitors the output of each smoke sensor for each of the electric field radiating devices.
  • each of the plurality of electric field radiating devices is provided with a flame sensor, and the main control unit monitors the output of each flame sensor for each of the electric field radiating devices and at the same time the plurality of electric field radiating devices.
  • the main control unit monitors the output of each flame sensor for each of the electric field radiating devices and at the same time the plurality of electric field radiating devices.
  • each of the plurality of electric field radiating devices is provided with a flame sensor, and the main control unit monitors the output of each gas sensor for each of the electric field radiating devices and simultaneously controls the plurality of electric fields. It is preferable to issue a warning signal when gas is detected in at least one field radiating device of the radiating device.
  • each of the plurality of electric field radiating apparatuses further includes an electric field radiation chamber for determining a predetermined space covering at least the collector and the nozzle block, and the nanofiber manufacturing apparatus And an inert gas supply device for supplying an inert gas to each field radiation chamber, and each of the plurality of field radiation devices is provided with a temperature sensor, a smoke sensor, and a flame sensor.
  • each smoke sensor, and each gas sensor When the output of the temperature sensor, each smoke sensor, and each gas sensor is monitored for each of the field radiating devices, and smoke, flame, or gas is detected in at least one field radiating device among the plurality of field radiating devices, the inert gas Supplying an inert gas to the field radiation chamber in the at least one field radiation device with respect to the supply device It is desirable to transmit the call.
  • the collector in each of the plurality of electric field radiators, the collector is attached to a conductive case through an insulating member, and the positive electrode of the power supply device is connected to the collector, The negative electrode of the power supply device is connected to the nozzle block through the case, and when the collector is viewed from the nozzle block side, the outer circumference of the insulating member is located outside the outer circumference of the collector, and the thickness of the insulating member is increased.
  • nanofiber manufacturing apparatus of the present invention since a plurality of field emission values are provided, nanofibers can be manufactured using the plurality of field emission values, and mass production of nanofibers becomes possible with high productivity. .
  • the main control device having the above-described configuration since the main control device having the above-described configuration is provided, one of the electric field radiating devices of the plurality of electric field radiating devices is continuously operated, for example, while continuously operating the plurality of electric field emission values for a long time. Even when an abnormality occurs only with respect to the defect, the abnormality can be detected immediately, and a nanofiber manufacturing apparatus with high safety can be realized.
  • the main control device having the above-described configuration since the main control device having the above-described configuration is provided, one of the electric field radiating devices of the plurality of electric field radiating devices is continuously operated, for example, while continuously operating the plurality of electric field emission values for a long time. Even if an abnormality has occurred only in this case, the operation of the electric field radiator with the abnormality is stopped only, and the operation of the remaining electric field radiator is not stopped. Therefore, it is completed without stopping the manufacturer of the nanofibers.
  • the nanofiber manufacturing apparatus of this invention it is not necessary to set the criteria at the time of determining that "the electric field radiating apparatus is abnormal". Therefore, it becomes possible to mass-produce a nanofiber with high productivity, without falling safety.
  • the unit since the main control device having the above-described configuration is provided, the unit accumulates on the long sheet by decelerating the feeding speed even if the operation of the electric field radiating device with the abnormality is stopped. It is possible to put the cumulative accumulation amount of nanofibers per area within a predetermined range. As a result, it becomes possible to mass-produce a nonwoven fabric having a uniform air permeability and a uniform thickness.
  • the nanofiber nonwoven fabric refers to a long sheet in which nanofibers are deposited.
  • the nanofiber nonwoven fabric may be a product as it is, or may be produced as a product by removing a long sheet from the nanofiber nonwoven fabric to produce a "nonwoven fabric consisting of only a nanofiber layer".
  • a “nano fiber” consists of a polymer and means that it is a fiber of several nm-several thousand nm in average diameter.
  • a "polymer solution” means the solution which melt
  • nanofiber manufacturing apparatus of the present invention it is possible to check the operation status of an electric field radiating device in which an abnormality occurs or to stop the operation of the electric field radiating device in which an abnormality occurs. It becomes possible to realize.
  • the main controller allows the cumulative deposition amount of the nanofibers per unit area deposited on the long sheet to be contained within a predetermined range.
  • nanofiber manufacturing apparatus of the present invention even if there is a slight disturbance in the amount of deposition per unit area in each field radiating apparatus, it is possible to mass-produce a nanofiber nonwoven fabric having a uniform air permeability.
  • nanofiber manufacturing apparatus of the present invention even if there is a slight disturbance in the amount of deposition per unit area in each field radiating apparatus, it becomes possible to mass-produce a nanofiber nonwoven fabric having a uniform thickness.
  • each of the plurality of electric field radiating devices is provided with a temperature sensor, and the main controller monitors the output of each temperature sensor for each of the electric field radiating devices and simultaneously sets a predetermined setting.
  • the current supply stop signal is transmitted to all power supply devices, thereby realizing a more stable nanofiber production device. It becomes possible.
  • each of the plurality of electric field radiating devices is provided with a smoke sensor, and the main controller monitors the output of each smoke sensor for each of the electric field radiating devices.
  • the current supply stop signal is transmitted to all the power supply devices, whereby a nanofiber manufacturing device with higher safety can be realized.
  • each of the plurality of electric field radiating devices is provided with a flame sensor, and the main control unit monitors the output of each flame sensor for each of the electric field radiating devices and at the same time the plurality of electric field radiating devices.
  • the current supply stop signal is transmitted to all power supply devices, whereby a nanofiber manufacturing device with higher safety can be realized.
  • each of the plurality of electric field radiating devices is provided with a flame sensor, and the main control unit monitors the output of each gas sensor for each of the electric field radiating devices and simultaneously controls the plurality of electric fields.
  • a gas is detected in at least one field radiating device of the radiating device, a warning signal is generated, whereby a nanofiber manufacturing device with higher safety can be realized.
  • each of the plurality of electric field radiating apparatuses further includes an electric field radiation chamber for determining a predetermined space covering at least the collector and the nozzle block, and the nanofiber manufacturing apparatus And an inert gas supply device for supplying an inert gas to each field radiation chamber, and each of the plurality of field radiation devices is provided with a temperature sensor, a smoke sensor, and a flame sensor.
  • each smoke sensor, and each gas sensor When the output of the temperature sensor, each smoke sensor, and each gas sensor is monitored for each of the field radiating devices, and smoke, flame, or gas is detected in at least one field radiating device among the plurality of field radiating devices, the inert gas Supplying an inert gas to the field radiation chamber in the at least one field radiation device with respect to the supply device As transmits a call, it is possible to realize a still more high safety nanofiber production apparatus.
  • the upper limit threshold value judged to be abnormal Difference between the first predetermined current amount at the current amount and the current amount during normal operation, or the difference between the second predetermined current amount at the lower limit threshold current amount and the current amount at the normal operation. It can be made small. As a result, it is possible to carry out the above-mentioned discovery earlier and to realize a nanofiber production apparatus which is more excellent in safety.
  • medical products such as high-performance and highly sensitive textiles, cosmetic-related products such as health care and skin care, industrial materials such as wiping cloth, filters, and separators for secondary batteries , Electronic materials such as capacitor separators, carriers of various catalysts, various sensor materials, medical materials such as regenerative medical materials, biomedical materials, medical MEMS materials, biosensor materials, etc.
  • Usable nanofibers can be prepared.
  • FIG. 1 is a view for explaining a nanofiber production apparatus according to the first embodiment.
  • Fig. 2 is an enlarged view of the main portion of the electric field radiating device of Example 1;
  • FIG. 3 is a diagram for explaining the operation of the main controller according to the first embodiment.
  • FIG. 4 is a diagram for explaining the operation of the main controller according to the first embodiment.
  • FIG. 5 is a graph showing the experimental results in Test Example 1.
  • FIG. 6 is a graph showing the experimental results in Test Example 2.
  • FIG. 7 is a diagram for explaining the operation of the main controller according to the second embodiment.
  • FIG. 1 is a figure for demonstrating the nanofiber manufacturing apparatus 1 which concerns on Example 1.
  • FIG. 1 (a) is a front view of the nanofiber manufacturing apparatus 1
  • Figure 1 (b) is a plan view of the nanofiber manufacturing apparatus (1).
  • 2 is an enlarged view of the main portion of the field emission device 20 according to the first embodiment.
  • FIG. 2 (a) is an enlarged front view of the main portion of the electric field radiator 20, and
  • FIG. 2 (b) is a plan view showing a mounting portion of the collector 150.
  • FIG. 3 and 4 are diagrams for explaining the operation of the main controller 60 according to the first embodiment.
  • illustration of the polymer solution supply part and the polymer solution collection part is abbreviate
  • FIG.1 (a) some member is shown by sectional drawing.
  • the nanofiber manufacturing apparatus 1 which concerns on Example 1 is a conveying apparatus 10 which conveys the elongate sheet W at predetermined
  • the main control unit 60 is provided.
  • the electric field radiating apparatus As the electric field radiating apparatus, four electric field radiating apparatuses 20 arranged in series along a predetermined conveying direction A in which the long sheet W is conveyed are provided. It is provided.
  • the nanofiber manufacturing apparatus 1 according to Example 1 is disposed between the electric field radiating apparatus 20 and the air permeability measuring apparatus 40, and a heating apparatus 30 for heating the long sheet W on which the nanofibers are deposited. ), And a VOC processing apparatus 70 for burning and removing volatile components generated when the nanofibers are deposited on the long sheet W, and a signal from the main controller 60, and detecting an abnormality.
  • An inert gas supply device 190 (see FIG. 3) is further provided to supply an inert gas to the field radiation chamber 102 in the apparatus 20.
  • the conveying apparatus 10 is the input roller 11 which injects the long sheet W, the winding roller 12 which winds up the long sheet W, the input roller 11, and the winding roller.
  • the auxiliary rollers 13 and 18 and the driving rollers 14, 15, 16 and 17 which are located between 12 are provided.
  • the input roller 11, the winding roller 12, and the drive rollers 14, 15, 16, and 17 are structured to rotate by a drive motor not shown.
  • the electric field radiator 20 is mounted to the case 100 via an insulating member 152 and is disposed at the side of one group in the long sheet W. And a plurality of nozzles located at positions facing the collector 150 on the other surface side of the long sheet W and discharging the polymer solution supplied from the polymer solution supply unit (not shown) toward the long sheet W.
  • an electric field radiation chamber (102) constituting a predetermined space covering the nozzle block (110), and an auxiliary belt device (170) for assisting the long sheet (W) to be transferred.
  • the nozzle block 110 includes a plurality of nozzles 112 as a plurality of nozzles 112 that discharge the pearler solution upward from the discharge port.
  • the nanofiber manufacturing apparatus 1 discharges the polymer solution from the discharge ports of the plurality of upward nozzles 112 while overflowing the polymer solution from the discharge ports of the plurality of upward nozzles 112, and simultaneously radiates the nanofibers,
  • the polymer solution which overflowed from the discharge port of the upward nozzle 112 of the upstream nozzle 112 is collect
  • the some upward nozzle 112 is arrange
  • the number of the plurality of upward nozzles 112 is, for example, 36 (6 * 6 when arranged in the same number) and 21904 (148 * 148 when arranged in the same number).
  • the nozzle block 110 has a rectangular shape (including a square) of 0.5m to 3m, for example, when viewed from an upper surface. It has a visible size and shape.
  • the collector 150 is attached to the conductive case 100 via an insulating member 152.
  • the positive electrode of the power supply device 160 is connected to the collector 150, and the negative electrode of the power supply device 160 is connected to the nozzle block 110 through the case 100.
  • the outer periphery of the insulating member 152 is located outside the outer periphery of the collector 150, and let the thickness of the insulating member 152 be "a"
  • the distance between the outer circumference of the insulating member 152 and the outer circumference of the collector 150 is "b”
  • "a ⁇ 6mm” is satisfied and "a + b ⁇ 50mm” is satisfied.
  • the power supply device 160 controls the operation of the current supply unit 164, the current measurement unit 166, and the current supply unit 164 and simultaneously measures the current from the current measurement unit 166. And a control unit 162 for processing the result.
  • the power supply device 160 applies a high voltage between the collector 150 and the plurality of nozzles 112, measures the amount of current supplied from the power supply device 160, and measures the measured value as the main controller 60. To send. In addition, when the current supply stop signal is received from the main controller 60, the power supply is stopped.
  • the auxiliary belt device 170 includes five auxiliary belt rollers that assist the rotation of the auxiliary belt 172 and the auxiliary belt 172 which rotates in synchronization with the feeding speed of the long sheet W.
  • One of the five subbelt rollers 174 or two or more subbelt rollers 174 is a driving roller, and the remaining subbelt rollers are driven rollers. Since the auxiliary belt 172 is disposed between the collector 150 and the long sheet W, the long sheet W is smoothly conveyed without being pulled by the collector 150 to which a positive high voltage is applied. Is done.
  • the heating device 30 is disposed between the electric field radiator 20 and the air permeability measuring device 40 to heat the long sheet W on which the nanofibers are deposited.
  • the heating temperature varies depending on the type of the long sheet W or the nanofibers, but for example, the long sheet W can be heated to a temperature of 50 ° C to 300 ° C.
  • the air permeability measuring device 40 uses the air permeability measuring unit 42 for measuring the air permeability P of the long sheet W in which the nanofibers are deposited, and the long air permeability measuring unit 42. Control the operation of the drive unit 43 and the drive unit 43 and the air permeability measurement unit 42 to reciprocate at a predetermined period T along the width direction of the cross-section, and receive the measurement results from the air permeability measurement unit 42.
  • the control part 44 is provided.
  • the drive part 43 and the control part 44 are arrange
  • the inert gas supply device 190 includes an inert gas cylinder 192 for supplying an inert gas, an inert gas supply line 194 for supplying the inert gas to each field radiation chamber 102, and And an opening / closing valve 196 for controlling the supply of inert gas in accordance with the signal from the main controller 60.
  • the main control device 60 is a conveying device 10, electric field radiation device 20, heating device 30, air permeability measuring device 40, VOC processing device 70, inert gas control device 192, polymer supply device And a polymer recovery device.
  • the VOC processing apparatus 70 burns and removes the volatile components generated when the nanofibers are deposited on the long sheet.
  • Nanofibers manufacturing method using nanofibers manufacturing apparatus 1 according to Example 1 is described.
  • the long sheet W is set in the conveying apparatus 10, and then the long sheet W is conveyed from the feeding roller 11 toward the take-up roller 12 at a predetermined conveying speed V, In each field radiator 20, nanofibers are sequentially deposited on the long sheet W. As shown in FIG. Thereafter, the long sheet W having the nanofibers deposited thereon is heated by the heating device 30. As a result, a nanofiber nonwoven fabric made of a long sheet in which nanofibers are deposited is produced.
  • the main controller 60 is larger than 0.24 mA, for example, when electric field radiation is applied while a voltage of 35 kV is applied between the collector 150 and the nozzle block 110.
  • a current supply stop signal is transmitted to the one or more power supply units 160 to stop the current supply. do.
  • the main controller 60 detects that a current smaller than 0.18 mA is supplied from one of the plurality of power supply units 160 or the plurality of power supply units 160, for example.
  • a warning signal e.g., a signal to sound a beep or a signal to sound a warning
  • the field radiation device to which the device 160 belongs belongs to a warning is issued.
  • the main controller 60 transmits a current supply stop signal for stopping the current supply to the one or the plurality of power supply units 160, the nanofibers per unit area deposited on the long sheet W are accumulated.
  • a feed rate deceleration signal is sent to the feeder 10 to reduce the feed rate so as to keep the deposition amount within a predetermined range.
  • the main controller 60 sets the number of power supply units 160 that have supplied current in the first period before decelerating the feed rate to n, and supplies power in the second period after decelerating the feed rate.
  • the number of power supply devices 160 to be implemented is m
  • the feed speed in the second period is controlled to be "m / n" times the feed speed in the first period.
  • the main control device 60 controls the feed rate even more thinly based on the air permeability measured by the air permeability measurement device 40.
  • control of the feed rate V can be performed by controlling the rotation speed of the drive rollers 14, 15, 16, 17.
  • the main controller 60 transmits a current supply stop signal for stopping current supply to the one or more power supply devices 160, the one or more power supplies to the inert gas supply device 190.
  • the signal for supplying the inert gas to the field emission chamber 102 in the field emission device 20 to which the device 160 belongs is transmitted.
  • the long sheet a nonwoven fabric, a woven fabric, a knitted fabric, etc. made of various materials can be used.
  • the thickness of a long sheet the thing of 5um-500um can be used, for example.
  • the length of the long sheet may be, for example, 10 m to 10 km.
  • polylactic acid polypropylene
  • PVAc polyvinyl acetate
  • PET polyethylene terephthalate
  • PBT polyethylene na Phthalate
  • PA Polyamide
  • PUR Polyurethane
  • PVA Polyvinyl Alcohol
  • PAN Polyacrylonitrile
  • PEI Polyethylimide
  • PCL Polycaprolactone
  • PLGA Polylactic acid glyc Rollic acid
  • a solvent used for a polymer solution dichloromethane, dimethylformamide, dimethyl sulfoxide, methyl ethyl ketone, chloroform, acetone, water, formic acid, acetic acid, cyclohexane, THF, etc. can be used, for example. You may mix and use multiple types of solvent.
  • the polymer solution may contain additives such as conductivity improvers.
  • the air permeability (P) of the nanofiber nonwoven fabric to be produced can be set to, for example, 0.15 cm 3 / cm 2 / s to 200 cm 3 / cm 2 / s.
  • the feed speed V can be set to 0.2 m / min-100 m / min, for example.
  • the voltage applied to the nozzle, the collector 150, and the nozzle block 110 may be set to 10 kV to 80 kV.
  • the temperature of a spinning zone can be set to 25 degreeC, for example.
  • the humidity of the radiation zone can be set to 30%, for example.
  • nanofiber manufacturing apparatus 1 since the plurality of electric field radiating devices 20 are provided, it is possible to manufacture nanofibers using the plurality of electric field radiating devices 20. Productivity makes it possible to mass produce nanofibers.
  • the main controller 60 having the above-described configuration since the main controller 60 having the above-described configuration is provided, for example, while the plurality of electric field radiators 20 are continuously operated for a long time, When an abnormality occurs only for one field radiator 20 of the plurality of field radiators 20 (a current larger than a predetermined first set amount of current is supplied from one or a plurality of power supplies). Even if detected), the abnormality can be detected immediately, and a nanofiber manufacturing apparatus with high safety can be realized.
  • the main controller 60 having the above-described configuration since the main controller 60 having the above-described configuration is provided, a plurality of electric fields are continuously driven, for example, while continuously operating a plurality of electric field emission values for a long time. Even when an abnormality occurs in only one field radiator of the radiating device, the manufacturer of the nanofibers is stopped because only the operation of the field radiator in which the abnormality has occurred stops the operation of the remaining field radiator. You do not have to finish it.
  • the nanofiber manufacturing apparatus 1 which concerns on Example 1, it is not necessary to set the criterion at the time when it determines with "the electric field radiating apparatus is abnormal". Therefore, it becomes possible to mass-produce a nanofiber with high productivity, without degrading safety.
  • the main controller 60 having the above-described configuration since the main controller 60 having the above-described configuration is provided, the feed rate is reduced accordingly even if the operation of the electric field radiator in which an abnormality occurs is stopped. By doing so, the cumulative accumulation amount of nanofibers per unit area deposited on the long sheet can be contained within a predetermined range. As a result, it becomes possible to mass-produce a nonwoven fabric having a uniform air permeability and a uniform thickness.
  • the main control apparatus 60 makes the feed rate V2 in the 2nd period T2 the feed rate in the 1st period T1. Since control is made to decelerate by "m / n" times (V1), it becomes possible to put the cumulative accumulation amount of nanofibers per unit area deposited on a long sheet within a predetermined range.
  • the air permeability can be controlled on the basis of the air permeability measured by the measuring device 40, the unit in each field radiating device. Even if the amount of deposition per area is slightly disturbed, it becomes possible to mass-produce a nanofiber nonwoven fabric having a uniform air permeability.
  • the main controller 60 has a current larger than a predetermined first predetermined amount of current, or one of the plurality of power supply devices 160 or a plurality of power supply devices 160.
  • the inert gas is supplied to the field radiation chamber 102 in the field radiation device 20 to which the one or the plurality of power supply units 160 belong to the inert gas supply device 190. Since the signal to be supplied is transmitted, an accident such as a flame can be prevented in advance, and a nanofiber manufacturing apparatus with higher stability can be realized.
  • the thickness of the insulating member 152 is referred to as "a”, and the thickness of the insulating member 152 is reduced.
  • the distance between the outer circumference and the outer circumference of the collector 150 is "b”, it satisfies "a ⁇ 6mm” and satisfies "a + b ⁇ 50mm”.
  • the difference between the predetermined first set current amount at the upper limit threshold current amount judged to be abnormal and the current amount at normal operation since it is possible to suppress the leakage current which does not contribute to the field emission to an extremely low value, "the difference between the predetermined first set current amount at the upper limit threshold current amount judged to be abnormal and the current amount at normal operation".
  • the difference between the predetermined second set current amount and the current amount during normal operation where the threshold current amount of the lower limit is judged to be abnormal can be made extremely small, and the above finding can be made earlier. Further It becomes possible to realize the nanofiber manufacturing apparatus excellent in safety.
  • Test Example 1 is a test example for clarifying the extent to which the thickness "a" of the insulating member 152 may be suppressed in order to suppress the leakage current.
  • 5 is a graph showing the experimental results in Test Example 1.
  • the nozzle block was used.
  • the current supplied from the power supply 160 (in this case, the leakage current) is a predetermined current (for example, 0.01 mA, 0.02 mA, 0.03 mA, 0.04 mA, 0.05).
  • a voltage is applied between the collector 150 and the upward nozzle 112 so as to be mA). And the leakage current and applied voltage at that time were recorded in the graph.
  • the leakage current is 0.01 mA even when a voltage of 35 kV is applied between the collector 150 and the nozzle block 110. It becomes possible to suppress to the extent.
  • the thickness "a" of the insulating member 152 is 8 mm or more, even when a voltage of 40 kV is applied between the collector 150 and the upward nozzle 112, the leakage current can be suppressed to about 0.01 mA.
  • the thickness "a" of the insulating member 152 is 12 mm or more, even when a voltage of 45 kV is applied between the collector 150 and the upward nozzle 112, the leak current can be suppressed to about 0.01 mA. Become.
  • Test Example 2 is a test for clarifying how much the distance (a + b) between the insulating member 152 and the collector 150 along the surface of the insulating member 152 should be suppressed to suppress the leakage current.
  • Yes. 6 is a graph showing the experimental results in Test Example 2.
  • Example 2 the electric field radiating device 20 in Example 1 (wherein the "a + b" is 45 mm, 50 mm, 60 mm, 80 mm, 100 mm, 120 mm, 140 mm or 160 mm) was used.
  • the current supplied from the power supply device 160 in this case, the leakage current
  • the leakage current is a constant current (for example, 0.01 mm, 0.02 mA, 0.03 mA, 0.04).
  • a voltage is applied between the collector 150 and the upward nozzle 112 so as to be mA, 0.05 mA). Then, the leakage current and the applied voltage at that time are recorded in the graph.
  • FIG. 7 is a diagram for explaining the operation of the main controller 60 in the second embodiment.
  • the nanofiber manufacturing apparatus 2 which concerns on Example 2 has the structure similarly to the nanofiber manufacturing apparatus 1 which concerns on Example 1 fundamentally, the air permeability has replaced the thickness measuring apparatus 40a instead of the measuring apparatus 40. ) Is different from the case of the nanofiber manufacturing apparatus 1 according to the first embodiment.
  • the thickness measuring device 40a controls the operation of the three thickness measuring units 42a and the three thickness measuring units 42a, and is measured by the three thickness measuring units 42a.
  • the main body portion 41a has a function of calculating the thickness of the long sheet W having the nanofibers deposited thereon based on the distance.
  • the thickness measuring device 40a transmits the information about the thickness measured by the thickness measuring unit 42a to the main controller 60.
  • the main controller 60 controls the feeding speed V of the long sheet W when the feeder 10 feeds the long sheet W based on the received information about the corresponding thickness.
  • a thickness measuring device including a pair of laser range measuring devices for measuring the distance to the long sheet W by a triangulation method can be used.
  • the nanofiber manufacturing apparatus 2 which concerns on Example 2 is equipped with the thickness measuring apparatus 40a instead of the air permeability measuring apparatus 40,
  • the thickness measurement device 40a for measuring the thickness d of the long sheet W in which the nanofibers are deposited by the field emission device 20 and the thickness d measured by the thickness measurement device 40a. Since the main controller 60 controls the feed rate V on the basis of), as in the case of the nanofiber manufacturing apparatus 1 according to Example 1, the per unit area in each electric field radiator Even if the amount of deposition is slightly disturbed, it becomes possible to mass produce a nanofiber nonwoven fabric having a uniform thickness.
  • the nanofiber manufacturing apparatus 2 which concerns on Example 2 of the nanofiber manufacturing apparatus 1 which concerns on Example 1 except having the air permeability provided with the thickness measuring apparatus 40a instead of the measuring apparatus 40 is carried out. Since it has a structure similar to the case, it has the corresponding effect among the effects which the nanofiber manufacturing apparatus 1 which concerns on Example 1 has.
  • the nanofiber production apparatus of the present invention has been described by using a nanofiber production apparatus having four field emission values as an electric field radiator, but the present invention is not limited thereto.
  • the present invention can be applied to a nanofiber production apparatus having two, three, or five or more field emission values.
  • the nanofiber production apparatus of the present invention has been described as an example using a nanofiber production apparatus having a power supply device for each electric field radiating apparatus, but the present invention is not limited thereto.
  • the present invention relates to a nanofiber manufacturing apparatus comprising a power supply device capable of supplying electric power to each field radiation device from one power supply device and simultaneously measuring the amount of current supplied to each field radiation device and transmitting it to the main controller. Can be applied.
  • the nanofiber production apparatus of the present invention has been described using a bottom-up field spinning device having an upward nozzle, but the present invention is not limited thereto.
  • the present invention can be applied to a top-down field emission device having a downward nozzle or a nanofiber production device having a side field emission device having a side nozzle.
  • the present invention uses the field emission value in which the positive electrode of the power supply device 160 is connected to the collector 150 and the negative electrode of the power supply device 160 is connected to the nozzle block 110.
  • the nanofiber manufacturing apparatus of this invention was demonstrated, this invention is not limited to this.
  • the present invention can be applied to a nanofiber production apparatus having an electric field emission value in which a positive electrode of a power supply device is connected to a nozzle and a negative electrode of the power supply device is connected to a collector.
  • the present invention can also be applied to a nanofiber production apparatus in which a temperature sensor is provided in each of a plurality of field radiating devices.
  • the main controller monitors the output of each smoke sensor for each of the field radiating devices, and inactivates when a temperature higher than a predetermined set temperature is detected in at least one field radiating device among the plurality of field radiating devices.
  • the gas supply device it is preferable to transmit a signal for supplying an inert gas to the field radiation chamber in the at least one field radiation device.
  • the present invention can be applied to a nanofiber production apparatus in which a smoke sensor is provided in each of a plurality of field radiating devices.
  • the main controller monitors the output of each smoke sensor for each of the field radiating devices, and when smoke is detected in at least one field radiating device among a plurality of field radiating devices, It is preferable to transmit a signal for supplying an inert gas to the field radiation chamber in at least one field radiation apparatus.
  • a smoke sensor a well-known smoke sensor can be used.
  • the present invention can be applied to a nanofiber production apparatus in which a flame sensor is provided in each of a plurality of field radiating devices.
  • the main controller monitors the output of each flame sensor for each of the field radiating devices, and when the flame is detected in at least one field radiating device among a plurality of field radiating devices, It is preferable to transmit a signal for supplying an inert gas to the field radiation chamber in at least one field radiation apparatus.
  • the flame sensor a known flame sensor can be used.
  • the present invention can be applied to a nanofiber production apparatus in which a gas sensor is provided in each of a plurality of field radiating devices.
  • the main controller monitors the output of each gas sensor for each of the electric field radiating devices and, when gas is detected in at least one electric field radiating device among a plurality of electric field radiating devices, the at least one electric field radiating device is applied. It is preferable to be configured to give a warning signal of abnormality.
  • the temperature sensor, a flame sensor, a smoke sensor, or a gas sensor may be provided in the room in which the nanofiber manufacturing apparatus was installed. As a result, it is possible to realize a nanofiber production apparatus with higher safety.
  • the present invention has been described using a nanofiber production apparatus in which one nozzle block is disposed in one field radiating device, but the present invention is not limited thereto.
  • 8 is a cross-sectional view of the field emission device 20a.
  • the present invention may be applied to a nanofiber manufacturing apparatus in which two nozzle blocks 110a1 and 110a2 are disposed in one field radiator 20a, and two or more nozzle blocks.
  • the present invention can also be applied to this excreted nanofiber manufacturing apparatus.
  • the nozzle arrangement pitch may be the same with all nozzle blocks, and the nozzle arrangement pitch may be different with each nozzle block.
  • the height position of the nozzle block may be the same for all the nozzle blocks, or the height position of the nozzle block may be different for each nozzle block.
  • a mechanism for reciprocating the nozzle block at a predetermined reciprocating cycle along the width direction of the elongate sheet may be provided.
  • the mechanism electric field spinning is performed while reciprocating the nozzle block at a predetermined reciprocating cycle, so that the deposition amount of the polymer fibers along the width direction of the long sheet can be made uniform.
  • the reciprocating cycle and the reciprocating distance of the nozzle block may be controlled independently for each field radiating device or for each nozzle block. With such a configuration, it is possible to reciprocate all the nozzle blocks at the same period, and to reciprocate each nozzle block at different periods. Further, the reciprocating distance of the reciprocating motion may be the same with all the nozzle blocks, or the reciprocating distance of the reciprocating motion with each nozzle block may be different.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

L'invention concerne un dispositif pour la fabrication de nanofibres, qui permet de fabriquer des nanofibres à grande échelle, avec une productivité élevée, sans baisse de la stabilité. Ce dispositif (1) pour la fabrication de nanofibres est équipé d'un dispositif de transfert (10), d'une pluralité de dispositifs (20) à émission de champ et d'un dispositif de commande (60) principal, qui commande les déplacements du dispositif de transfert (10) et de la pluralité des dispositifs (20) à émission de champ. Le dispositif de commande (60) principal surveille l'ampérage fourni par chacun des dispositifs d'alimentation à chacun des dispositifs (20) à émission de champ et transmet également, lors de la détection d'un courant supérieur à l'ampérage réglé prédéterminé, devant être fourni par un dispositif d'alimentation ou par la pluralité des dispositifs d'alimentation, un signal qui coupe l'alimentation électrique provenant du ou des dispositif(s) d'alimentation correspondant(s), et transmet simultanément un signal visant à réduire la vitesse de transfert du dispositif de transfert (10), afin que la valeur cumulée des nanofibres accumulées sur des longues feuilles (W) par surface unitaire d'accumulation soit comprise dans une plage prédéterminée.
PCT/KR2011/003061 2010-12-06 2011-04-27 Dispositif pour la fabrication de nanofibres WO2012077870A1 (fr)

Applications Claiming Priority (4)

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JP2010272076A JP5715395B2 (ja) 2010-12-06 2010-12-06 ナノ繊維製造装置
JP2010-272076 2010-12-06
KR10-2011-0016683 2011-02-24
KR1020110016683A KR101040060B1 (ko) 2010-12-06 2011-02-24 나노섬유 제조장치

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JP6368826B2 (ja) * 2017-06-06 2018-08-01 株式会社東芝 ナノファイバ製造装置、及び、ナノファイバ製造方法

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