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KR-102965217-B1 - Two-component electrospinning device with static mixer and continuous electrospinning device equipped with the same

KR102965217B1KR 102965217 B1KR102965217 B1KR 102965217B1KR-102965217-B1

Abstract

The present invention mixes a first mixture and a second mixture using a static mixer, thereby facilitating easy material changes based on fluid characteristics and enabling stirring solely through fluid velocity without the need for a separate power source. Furthermore, the static mixer has a small internal volume, allowing for rapid and efficient mixing of fluids. Additionally, since the static mixer is inexpensive, it can be discarded after a single use and replaced with a new one, eliminating the need for complex and expensive cleaning units. By using a static mixer in this manner, the structure of the electrospinning device can be simplified. Since the static mixer can be used as a disposable unit, it eliminates the need for separate cleaning, thereby facilitating maintenance of the electrospinning device and improving mass production speed.

Inventors

  • 이형수
  • 오윤
  • 정우석
  • 고경수
  • 박현중
  • 이현승

Assignees

  • 사단법인 캠틱종합기술원

Dates

Publication Date
20260513
Application Date
20230927

Claims (7)

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  3. A first supply unit that supplies a first mixture; A second supply unit that supplies a second mixture; A first delivery unit that delivers a preset amount of the first mixture supplied from the first supply unit; A second delivery unit that delivers a preset amount of the second mixture supplied from the second supply unit; A mixing unit that receives the first mixture from the first delivery unit and receives the second mixture from the second delivery unit to produce a radiating mixture in which the first mixture and the second mixture are uniformly mixed at a preset ratio; and It includes a spinning unit that receives the spinning mixture from the mixing unit and electrospun the spinning mixture to manufacture a nanofiber membrane, The above mixing unit is, A mixing block in which the first delivery unit and the second delivery unit are combined, and a first fluid conduit for a mixture communicating with the first delivery unit and a second fluid conduit for a mixture communicating with the second delivery unit are formed inside; and It includes a static mixer coupled to the above mixing block, wherein the first mixture introduced from the first mixture flow pipe and the second mixture introduced from the second mixture flow pipe flow and mix. Each of the above-mentioned first transfer unit and the above-mentioned second transfer unit is composed of a mono pump, and A two-component electrospinning device with a static mixer, characterized in that the monopump is wrapped in an insulator, and the insulator is made of PEEK material.
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  5. A process chamber having a hollow interior and a first partition and a second partition formed to divide the interior into a first zone, a second zone, and a third zone, each capable of individual temperature control; A roll-to-roll collector disposed in the above-mentioned first and second zones, which continuously supplies and recovers release paper in a roll-to-roll manner; A static mixer-applied two-component electrospinning device that is positioned in the third zone and electrospun a spinning mixture in which the first mixture and the second mixture are mixed onto the release paper located in the second zone; A transfer device disposed in the above-mentioned third zone and connected to the above-mentioned static mixer-applied two-component electrospinning device to move the above-mentioned static mixer-applied two-component electrospinning device relative to the release paper; A coating control device disposed in the above-mentioned third zone and controlling the mixing ratio of the first mixture and the second mixture mixed in the above-mentioned static mixer-applied two-component electrospinning device; and It includes a radiation heating device disposed in the above-mentioned third zone and heating the radiation mixture electrospun in the above-mentioned static mixer-applied two-component electrospinning device, and The above roll-to-roll collector is, A release roller positioned above the first zone and unwinding a release liner wound in a cylindrical shape; A winding roller positioned at the lower part of the first zone above and winding the release paper into a cylindrical shape; A pair of direction-variable transfer rollers spaced apart and disposed at the upper and lower portions of the second zone, connected to the release paper to vary the direction of travel of the release paper; and It includes a roller transfer unit positioned in the second zone and connected to the variable direction transfer roller to move the variable direction transfer roller relative to the second partition wall. The above-mentioned two-component electrospinning device with a static mixer is, A first supply unit that supplies a first mixture; A second supply unit that supplies a second mixture; Deliver the first mixture supplied from the first supply unit in a preset amount. The first delivery unit; Deliver the second mixture supplied from the second supply unit in a preset amount. A second delivery unit; A mixing unit that receives the first mixture from the first delivery unit and receives the second mixture from the second delivery unit to produce a radiating mixture in which the first mixture and the second mixture are uniformly mixed at a preset ratio; and Receiving the radiation mixture from the above mixing unit, the radiation mixture is electric It includes a spinning unit that manufactures a nanofiber membrane by spinning, The above mixing unit is, The first transmission unit and the second transmission unit are combined, and the first transmission unit is inside A mixing block formed with a first fluid conduit for a mixture communicating with and a second fluid conduit for a mixture communicating with the second transfer unit; and The phase introduced from the first mixing material flow pipe, which is coupled to the above mixing block. A continuous electrospinning device characterized by including a static mixer in which the first mixture and the second mixture introduced from the flow channel for the second mixture flow and are mixed.
  6. In paragraph 5, A continuous electrospinning device characterized in that a pair of release paper passage slits are formed in the first partition wall through which the release paper passes, and a nozzle passage slit is formed in the second partition wall through which a spinning nozzle of the static mixer-applied two-component electrospinning device is inserted.
  7. In paragraph 6, the above-mentioned radiation heating device is, A pair of heating air injection parts, each positioned at a certain distance apart at the upper and lower ends of the nozzle passage slit of the second partition wall and injecting heating air; and A continuous electrospinning device characterized by including a heating air supply unit connected to the heating air injection unit and supplying the heating air to the heating air injection unit.

Description

Two-component electrospinning device with static mixer and continuous electrospinning device equipped with the same The present invention relates to a two-component electrospinning device with a static mixer and a continuous electrospinning device equipped with the same. Electrospinning is a method of manufacturing nanofibers or nanofiber membranes by spraying a dissolved polymer solution in an electric field. To manufacture a nanofiber membrane by such electrospinning, a polymer solution is forcibly flowed through a syringe pump to form a drop of polymer at the tip of a nozzle, and a high voltage potential is applied to induce free charges in the polymer solution, causing the solution to overcome surface tension and be ejected by the repulsive force of the free charges. Most methods for manufacturing nanofiber membranes using such electrospinning utilize a method in which a pure low-molecular-weight thermoplastic polymer resin is dissolved in a solvent in advance to create a solution of a certain concentration, and then a high voltage is applied externally to spin it. However, it is difficult to manufacture nanoscale nanofiber membranes using low molecular weight thermoplastic resins. To solve this, high molecular weight thermoplastic resins can be used, but in this case, toxic organic solvents are required to dissolve the high molecular weight thermoplastic resins. These toxic organic solvents remain in the nanofiber membranes after manufacturing. The electrospinning method used to manufacture nanofiber membranes using such high molecular weight thermoplastic resins causes harm to producers during the manufacturing process, manufacturers during the production of products using the manufactured nanofiber membranes, and consumers during the use of the products due to toxic organic solvents. Furthermore, due to toxic organic solvents remaining in the nanofiber membranes, the membranes melt or deform, leading to a deterioration of their mechanical properties. Furthermore, when nanofiber membranes are manufactured by melt spinning, it is difficult to add additional functional additives due to the high viscosity of the thermoplastic material during the melting process of the high molecular weight thermoplastic resin. Consequently, it is difficult to improve the mechanical, thermal, and electrical properties of the nanofiber membrane by incorporating various functional additives. In addition, conventional electrospinning devices have complex structures and are difficult to clean, making maintenance difficult, and it is not easy to stably and finely control high-viscosity materials. Furthermore, there is a problem in that it is difficult to continuously produce nanofiber membranes over a large area. FIGS. 1 and 2 are drawings showing a two-component electrospinning device with a static mixer applied according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of a mixing unit and a spinning unit constituting a two-component electrospinning device with a static mixer according to one embodiment of the present invention. FIG. 4 is a cross-sectional view of a spinning unit constituting a two-component electrospinning device with a static mixer according to one embodiment of the present invention. FIG. 5 is a diagram illustrating the operation of a two-component electrospinning device with a static mixer according to one embodiment of the present invention. FIG. 6 is a drawing showing a continuous electrospinning apparatus equipped with a static mixer-applied two-component electrospinning apparatus according to one embodiment of the present invention. FIG. 7 is a drawing showing a partial cross-section of a continuous electrospinning device equipped with a static mixer-applied two-component electrospinning device according to one embodiment of the present invention. FIG. 8 is a drawing showing the internal view of a coating control device constituting a continuous electrospinning device equipped with a static mixer-applied two-component electrospinning device according to one embodiment of the present invention. Figure 9 is a table showing the performance of the mono pump of HEISHIN's 3HD006G30 model. FIG. 10 is a drawing showing a radiation heating device constituting a continuous electrospinning device equipped with a static mixer-applied two-component electrospinning device according to one embodiment of the present invention. Hereinafter, a two-component electrospinning device with a static mixer according to one embodiment of the present invention will be described in detail. As illustrated in FIGS. 1 and 2, a static mixer-applied two-component electrospinning device (100) according to one embodiment of the present invention is composed of a first supply unit (110), a second supply unit (120), a first transfer unit (130), a second transfer unit (140), a mixing unit (150), and a spinning unit (160). [First supply unit (110)] The first supply unit (110) supplies the first mixture. The firs