WO2023004835A1 - Appareil d'électrofilage depuis une surface libre - Google Patents

Appareil d'électrofilage depuis une surface libre Download PDF

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Publication number
WO2023004835A1
WO2023004835A1 PCT/CN2021/109992 CN2021109992W WO2023004835A1 WO 2023004835 A1 WO2023004835 A1 WO 2023004835A1 CN 2021109992 W CN2021109992 W CN 2021109992W WO 2023004835 A1 WO2023004835 A1 WO 2023004835A1
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WO
WIPO (PCT)
Prior art keywords
solution
electrospinning device
solution pool
surface electrospinning
spray head
Prior art date
Application number
PCT/CN2021/109992
Other languages
English (en)
Chinese (zh)
Inventor
徐岚
樊培志
Original Assignee
苏州大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202121725667.XU external-priority patent/CN215366076U/zh
Priority claimed from CN202110852397.7A external-priority patent/CN113430654A/zh
Application filed by 苏州大学 filed Critical 苏州大学
Publication of WO2023004835A1 publication Critical patent/WO2023004835A1/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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/04—Cleaning spinnerettes or other parts of the spinnerette packs
    • 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

Definitions

  • the application relates to a free liquid surface electrostatic spinning device, which belongs to the technical field of spinning.
  • Electrospinning technology is currently the most common method of producing nanofibers in the world. In recent years, due to the rapid heating up of nanomaterial research, people have aroused strong interest in in-depth research on electrospinning. Electrospinning technology has the advantages of simple operation, wide application range and relatively high production efficiency, and the spun nanofibers are fine, with large specific surface area and high porosity, which has become a research hotspot.
  • Free liquid surface electrospinning is a new spinning method.
  • the spinning principle is to use the electrostatic force provided by the high-voltage electric field to overcome the surface tension of the polymer liquid surface, form a Taylor cone on the polymer liquid surface, and further form a jet.
  • the jet is attenuated into nanofibers under the action of electric field force.
  • the purpose of this application is to provide a kind of free surface electrospinning device, it can improve spinning efficiency and spinning output, convenient and fast.
  • a free liquid surface electrospinning device comprising:
  • a rotating assembly is connected to at least two of the holding parts and drives the holding parts to rotate;
  • a high-voltage generating part is arranged on one side of the rotating assembly
  • a circulating liquid supply component is used to collect the overflowing solution of the holding part and deliver the solution to the holding part;
  • the circulating liquid supply component includes a spray head for delivering the solution, and in the height direction of the free liquid surface electrospinning device, the holding part is located below the spray head.
  • the circulating liquid supply assembly includes a solution pool, the spray head is connected to the solution pool through a catheter, and the rotating assembly is arranged in the solution pool.
  • the solution pool is arranged obliquely, and the solution pool arranged obliquely has a highest point, and the spray head is arranged on a side of the solution pool opposite to the highest point.
  • each of the holding parts has an initial position and a liquid filling position
  • the rotating assembly drives the holding parts to switch between the initial position and the liquid filling position, and is located at the In the initial position, the holding part is set away from the spray head, and in the liquid filling position, the spray head delivers the solution into the holding part.
  • a boss is arranged inside the solution pool, and the boss forms a receiving groove with the edge of the solution pool, and the rotating assembly is arranged on the boss.
  • the center of the rotating component coincides with the center of the boss.
  • the rotating assembly includes a driving shaft connected to the driving member and a supporting shaft connected to the driving shaft, and at least two of the containing parts are connected to the supporting shaft.
  • the cross section of the solution pool is circular
  • the container is arranged on the end side of the support shaft, and the length of the support shaft is smaller than the minimum diameter of the solution pool.
  • the high voltage generator includes a high voltage power supply and a metal slide electrically connected to the high voltage power supply.
  • each of the containing parts also has a spinning position, and when located at the spinning position, the containing parts are in contact with the metal sliding sheet for spinning.
  • the receiving part is arranged above the holding part at the spinning position.
  • the present application has the following beneficial effects: by providing a circulating liquid supply assembly, which collects the overflowing solution of the container and transports it to the nozzle from bottom to top, the nozzle is located above the container, Further, the solution is delivered to the lower container, avoiding clogging of the spray head and avoiding waste, and the structure is simple and the operation is convenient.
  • Figure 1 is a schematic structural view of the free surface electrospinning device of the present application.
  • a free liquid surface electrospinning device in a preferred embodiment of the present application, including at least two holding parts 1 for placing solutions, connected with at least two holding parts 1 And the rotating assembly 2 that drives the container 1 to rotate, the high-voltage generator 3 and the receiver 4 arranged on one side of the container 1, in this embodiment, the receiver 4 is arranged above the opening of the container 1, For better nanofiber reception.
  • the receiving member 4 can be a receiving net, or a receiving drum, etc., which is not specifically limited here, and is determined according to actual conditions.
  • the receiver 4 is grounded, the high voltage generator 3 is connected to the container 1 to form an electrostatic field with the receiver 4, and the spinning solution in the container 1 overcomes the pressure of the polymer liquid surface under the action of the electrostatic field.
  • Surface tension forms a Taylor cone on the polymer liquid surface, and further forms a jet, which is thinned into nanofibers under the action of an electric field force.
  • the rotating assembly 2 drives the container 1 to rotate, and the high-voltage generator 3 contacts the container 1 rotated to its attachment to realize electrical connection.
  • the rotating assembly 2 includes a driving shaft 21 connected to the driving member and a supporting shaft 22 connected to the driving shaft 21 , at least two containing parts 1 are connected to the supporting shaft 22 .
  • the driving part is a motor.
  • the holding part 1 is arranged at the end side of the support shaft 22. In other embodiments, the holding part 1 can also be arranged at other positions of the support shaft 22, which is not specifically limited here. depends.
  • there are four containers 1 in the present application and correspondingly, there are two support shafts 22 .
  • the number of holding parts 1 can also be other, such as three or five, etc., which are not specifically limited here, but determined according to actual conditions.
  • the high-voltage generating part 3 includes a high-voltage power supply 31 and a metal slide 32 electrically connected to the high-voltage power supply 31, wherein the metal slide 32 is made of conductive metal, such as copper, iron, etc., which are not specifically limited here. It depends.
  • the holding part 1 rotates under the drive of the rotating assembly 2, so each holding part 1 also has a spinning position.
  • Silk the material of the container 1 is also conductive metal, which is the same as the material of the metal slide 32 , which will not be repeated here.
  • the holding part 1 is in the shape of an arc, and the arc-shaped holding part 1 has a convex arc surface, and the metal sliding piece 32 cooperates with the convex arc surface touch.
  • the liquid supply assembly in the prior art is generally external, and it transports the solution from bottom to top during the spinning process. This liquid supply method is likely to cause blockage of the spinning nozzle 54, thereby affecting the continuous preparation of nanofiber membranes. Moreover, when supplying liquid, the high-voltage power supply 31 needs to be turned off to supply liquid. There is a risk of high pressure in liquid supply under working conditions, but it will affect the yield of nanofibers. Therefore, in order to prevent the occurrence of clogging of the nozzle 54 during the liquid supply process and prevent the waste of spinning solution, the free liquid surface spinning device of the present application also includes a circulating liquid supply assembly 5 .
  • the circulating liquid supply assembly 5 is used to collect the overflowing solution of the container 1 and deliver the solution to the container 1 .
  • the circulating liquid supply assembly 5 includes a solution pool 51 and a nozzle 54 communicating with the solution pool 51 through a catheter 53 , and the rotating assembly 2 is disposed in the solution pool 51 .
  • the container 1 In the height direction of the free surface electrospinning device, the container 1 is located below the nozzle 54 .
  • Each container 1 has an initial position and a liquid filling position.
  • the rotating assembly 2 drives the container 1 to switch between the initial position and the liquid filling position. position, the spray head 54 delivers the solution into the container 1 .
  • the section of the solution pool 51 is circular. In order to prevent the spinning solution in the container 1 from overflowing to the outside of the solution pool 51 , the length of the support shaft 22 is smaller than the minimum diameter of the solution pool 51 .
  • the solution pool 51 is cylindrical, so the diameters of the solution pool 51 are consistent everywhere.
  • the solution pool 51 may also be tapered, and in this case, the length of the support shaft 22 should be smaller than the minimum diameter of the tapered solution pool 51 .
  • the solution pool 51 is provided with a boss 52 , and the boss 52 and the edge of the solution pool 51 form an accommodating groove.
  • the center of the rotating assembly 2 coincides with the center of the boss 52 . That is, the center of the drive shaft 21 coincides with the center of gravity of the boss 52 to facilitate the arrangement of the drive assembly, and when each container 1 reaches a position close to the metal slide 32, it can all contact the metal slide 32 to realize spinning. . At this time, the position where the container 1 is in contact with the metal slide 32 for spinning is the spinning position.
  • the solution pool 51 is arranged obliquely, and the inclined solution pool 51 has a highest point, and the spray head 54 is arranged on the side of the solution pool 51 opposite to the highest point. That is, the spray head 54 is disposed at the lowest point of the solution pool 51, and the spinning solution can move from the highest point to the lowest point and collect.
  • the spinning solution is delivered to the nozzle 54 through the catheter 53 under the action of the pump, and the solution is delivered to the container 1 located under the nozzle 54 through the nozzle 54, and the solution is delivered from top to bottom, effectively preventing the nozzle 54 from clogging, and The spinning solution is reused to prevent the waste of spinning solution.
  • the implementation process of the free liquid surface spinning device of the present application is: start the driving member to drive the drive shaft 21 to rotate, and then drive the support shaft 22 to rotate, so that one of the holding parts 1 moves to the spinning position, and the metal slide 32 and the The containers 1 are brought into contact to effect spinning. While the container 1 at the spinning position is now at the liquid filling position, the nozzle 54 can deliver the solution into the container 1 . The other two containing parts 1 are located at the initial position, neither spinning nor adding liquid. At this point, the driver stops running. After an interval of time, the driving part drives the drive shaft 21 to rotate again until the next holding part 1 is positioned at the spinning position.
  • the above method can improve the spinning efficiency, and at the same time avoid the occurrence of clogging of the nozzle 54 .
  • the circulating liquid supply assembly 5 which collects the overflowing solution of the container 1, and transports it to the nozzle 54 from bottom to top, and the nozzle 54 is located above the container 1, and then downward
  • the solution is transported in the containing part 1, while avoiding the clogging of the nozzle 54, it also achieves the effect of avoiding waste, and the structure is simple and the operation is convenient.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

La présente invention concerne un appareil d'électrofilage depuis une surface libre, comprenant : au moins deux éléments récipients, les éléments récipients étant utilisés pour placer une solution ; un élément de rotation, qui est relié aux au moins deux éléments récipients et entraîne les éléments récipients en rotation ; un élément de génération de haute tension, qui est disposé sur un côté de l'élément de rotation ; un élément de réception, qui est disposé sur un côté des éléments récipients et est mis à la terre ; et un élément d'alimentation en liquide de circulation, qui est utilisé pour collecter la solution qui déborde des éléments récipients et délivrer la solution aux éléments récipients, l'élément d'alimentation en liquide de circulation comprenant une tête de pulvérisation pour délivrer la solution, et les éléments récipients étant situés en dessous de la tête de pulvérisation dans la direction de hauteur du dispositif d'électrofilage depuis une surface libre. En étant pourvu de l'élément d'alimentation en liquide de circulation, ledit élément collecte la solution qui déborde des éléments récipients et délivre ensuite la solution à la tête de pulvérisation de bas en haut, et la tête de pulvérisation est située au-dessus des éléments récipients, de façon à délivrer la solution dans les éléments récipients en dessous, empêchant ainsi un blocage de la tête de pulvérisation tout en obtenant également l'effet d'une prévention de déchets. De plus, la structure est simple, et le fonctionnement est pratique.
PCT/CN2021/109992 2021-07-27 2021-08-02 Appareil d'électrofilage depuis une surface libre WO2023004835A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202121725667.XU CN215366076U (zh) 2021-07-27 2021-07-27 自由液面静电纺丝装置
CN202121725667.X 2021-07-27
CN202110852397.7A CN113430654A (zh) 2021-07-27 2021-07-27 自由液面静电纺丝装置
CN202110852397.7 2021-07-27

Publications (1)

Publication Number Publication Date
WO2023004835A1 true WO2023004835A1 (fr) 2023-02-02

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PCT/CN2021/109992 WO2023004835A1 (fr) 2021-07-27 2021-08-02 Appareil d'électrofilage depuis une surface libre

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WO (1) WO2023004835A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008179906A (ja) * 2007-01-24 2008-08-07 Matsushita Electric Ind Co Ltd ナノファイバーの製造方法及び装置
US20160047062A1 (en) * 2013-04-12 2016-02-18 Donaldson Company, Inc. Centrifugal electrospinning process
CN207987362U (zh) * 2018-03-23 2018-10-19 北京化工大学 一种机械波干涉静电纺丝装置
CN109228329A (zh) * 2018-10-26 2019-01-18 大连民族大学 实验用3d堆叠式电纺纤维喷射成形装置
CN210140649U (zh) * 2019-03-29 2020-03-13 南京东焱氢能源科技有限公司 一种静电纺丝机
CN211872154U (zh) * 2020-03-10 2020-11-06 苏州大学 搅拌式大批量自由液面静电纺丝装置
CN112030241A (zh) * 2020-07-13 2020-12-04 兰州百源基因技术有限公司 一种可3d打印的静电纺丝设备
CN112981558A (zh) * 2021-02-23 2021-06-18 苏州大学 静电纺丝装置及ZnO-PLGA-PCL抗菌纳米纤维膜的制备方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008179906A (ja) * 2007-01-24 2008-08-07 Matsushita Electric Ind Co Ltd ナノファイバーの製造方法及び装置
US20160047062A1 (en) * 2013-04-12 2016-02-18 Donaldson Company, Inc. Centrifugal electrospinning process
CN207987362U (zh) * 2018-03-23 2018-10-19 北京化工大学 一种机械波干涉静电纺丝装置
CN109228329A (zh) * 2018-10-26 2019-01-18 大连民族大学 实验用3d堆叠式电纺纤维喷射成形装置
CN210140649U (zh) * 2019-03-29 2020-03-13 南京东焱氢能源科技有限公司 一种静电纺丝机
CN211872154U (zh) * 2020-03-10 2020-11-06 苏州大学 搅拌式大批量自由液面静电纺丝装置
CN112030241A (zh) * 2020-07-13 2020-12-04 兰州百源基因技术有限公司 一种可3d打印的静电纺丝设备
CN112981558A (zh) * 2021-02-23 2021-06-18 苏州大学 静电纺丝装置及ZnO-PLGA-PCL抗菌纳米纤维膜的制备方法

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