CN112430858A - Electrostatic spinning equipment - Google Patents
Electrostatic spinning equipment Download PDFInfo
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- CN112430858A CN112430858A CN202011253981.2A CN202011253981A CN112430858A CN 112430858 A CN112430858 A CN 112430858A CN 202011253981 A CN202011253981 A CN 202011253981A CN 112430858 A CN112430858 A CN 112430858A
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- 238000010041 electrostatic spinning Methods 0.000 title claims abstract description 23
- 238000009987 spinning Methods 0.000 claims abstract description 198
- 238000001523 electrospinning Methods 0.000 claims abstract description 25
- 230000005684 electric field Effects 0.000 claims abstract description 23
- 230000009471 action Effects 0.000 claims abstract description 13
- 238000009826 distribution Methods 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 33
- 239000011159 matrix material Substances 0.000 claims description 32
- 238000007789 sealing Methods 0.000 claims description 10
- 238000001704 evaporation Methods 0.000 claims 1
- 239000002121 nanofiber Substances 0.000 abstract description 21
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 14
- 239000007788 liquid Substances 0.000 description 9
- 229920000642 polymer Polymers 0.000 description 5
- -1 polytetrafluoroethylene Polymers 0.000 description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 239000011295 pitch Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
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- 229910003460 diamond Inorganic materials 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 239000004642 Polyimide Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 230000005686 electrostatic field Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
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Classifications
-
- 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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
本发明公开了一种静电纺丝设备，包括纺丝电极、收集电极以及用以盛装纺丝溶液的溶液槽，所述纺丝电极的至少一部分浸没于所述溶液槽内的纺丝溶液中，所述纺丝电极和所述收集电极二者在电场的作用下形成有纺丝区，所述纺丝电极包括多个具有点电极的点阵纺丝单元，通过全部所述点阵纺丝单元的旋转以将纺丝溶液经所述点电极供入所述纺丝区进行纺丝。上述静电纺丝设备在相同电压情况下产生的电场强度大，纳米纤维产量高，可以大大提高纺丝效率，有利于提高纺丝稳定性和均匀性，并且通过点电极生产出的纳米纤维直径小且分布均匀；同时，由于点电极产生的电场强度高，纺丝时需要的启动电压低、耗能低。
The invention discloses an electrostatic spinning device, comprising a spinning electrode, a collecting electrode and a solution tank for containing a spinning solution, at least a part of the spinning electrode is immersed in the spinning solution in the solution tank, Both the spinning electrode and the collecting electrode form a spinning area under the action of an electric field, and the spinning electrode includes a plurality of lattice spinning units with point electrodes, through all the lattice spinning units is rotated to feed the spinning solution through the point electrode into the spinning zone for spinning. The above-mentioned electrospinning equipment generates high electric field strength and high nanofiber yield under the same voltage condition, which can greatly improve the spinning efficiency, which is beneficial to improve the spinning stability and uniformity, and the diameter of the nanofibers produced by the point electrode is small. And the distribution is uniform; at the same time, due to the high electric field intensity generated by the point electrode, the starting voltage required for spinning is low, and the energy consumption is low.
Description
Technical Field
The invention relates to the technical field of electrostatic spinning production, in particular to electrostatic spinning equipment.
Background
The electrostatic spinning technology is a process that a high molecular melt or spinning solution overcomes surface tension under the action of a high-voltage electric field, fluid jet flow is sprayed from a spinning head, the jet flow is continuously refined under the action of electrostatic field force, viscous resistance, surface tension and the like, and finally fiber aggregates are deposited on a receiving electrode.
In the prior art, a needleless electrostatic spinning technology is generally adopted for spinning, wherein in the roller needleless electrostatic spinning technology, a spinning electrode is made into a roller type electrode, a part of a roller is immersed in a spinning solution, the spinning solution is fed into a spinning area through the rotation of the roller, and solution jet flow is generated under the action of a high-voltage electric field, so that nanofibers are formed. However, in the above technology of performing electrostatic spinning by using rotation of the roller, the roller electrode needs a higher voltage to perform spinning, and the electric field intensity generated by the roller electrode is distributed such that the electric field intensity generated at two ends is large and the electric field intensity generated in the middle area is small, so that the stability of electrostatic spinning production and the uniformity of nanofiber products are affected.
Therefore, how to avoid the influence on the uniformity of the nanofiber product caused by adopting roller electrostatic spinning is a technical problem which needs to be solved by the technical personnel in the field at present.
Disclosure of Invention
The invention aims to provide electrostatic spinning equipment which can improve spinning stability, uniformity and spinning efficiency, and simultaneously, the produced nano fibers are small in diameter and uniform in distribution.
In order to achieve the above object, the present invention provides an electrospinning device, comprising a spinning electrode, a collecting electrode and a solution tank for holding a spinning solution, wherein at least a portion of the spinning electrode is immersed in the spinning solution in the solution tank, the spinning electrode and the collecting electrode form a spinning region under the action of an electric field, the spinning electrode comprises a plurality of dot matrix spinning units with dot electrodes, and the spinning solution is fed into the spinning region through the dot electrodes for spinning through the rotation of all the dot matrix spinning units.
Optionally, the spinning device further comprises a rotating shaft arranged along the rotating center line of the spinning electrode and used for driving all the lattice spinning units to rotate, and all the lattice spinning units are distributed along the axial direction of the rotating shaft.
Optionally, any one of the lattice spinning units is specifically a lattice spinning unit distributed in a star shape.
Optionally, any one of the dot matrix spinning units includes a plurality of metal rods arranged along the radial direction, one end of each metal rod is fixedly connected to the rotating shaft, and the other end of each metal rod is fixedly connected to the dot electrode.
Optionally, the pitch of any two adjacent dot matrix spinning units is equal.
Optionally, the lengths of the metal rods in any two adjacent dot matrix spinning units are the same.
Optionally, the spinning electrode is in particular a spiral spinning electrode.
Optionally, the solution tank is provided with a sealing cover to prevent the spinning solution from volatilizing.
Optionally, the sealing cover is provided with a plurality of liquid outlet holes which are arranged in one-to-one correspondence with the lattice spinning units and used for leading the lattice spinning units to take out the spinning solution.
Optionally, any of the point electrodes is spherical, cylindrical or conical in shape.
Compared with the background art, the electrostatic spinning equipment provided by the embodiment of the invention comprises a spinning electrode, a collecting electrode and a solution tank, wherein the solution tank is used for containing a spinning solution, at least one part of the spinning electrode is immersed in the spinning solution in the solution tank, a spinning area is formed by the spinning electrode and the collecting electrode under the action of an electric field, and further, the spinning electrode comprises a plurality of dot matrix spinning units with dot electrodes, and the spinning solution is fed into the spinning area through the dot electrodes to be spun through the rotation of all the dot matrix spinning units. That is to say, the spinning solution is brought to the spinning area through the rotation of all the dot matrix spinning units, under the action of a high-voltage electric field, the dot electrodes carrying the spinning solution in the dot matrix spinning units can form solution jet flow, the solution jet flow flies to the collecting electrode under the action of the electric field force and is continuously drawn and thinned, and finally, the nano fibers are generated and deposited on the collecting electrode. Compared with the traditional arrangement mode of electrostatic spinning by adopting a roller type electrode, the electrostatic spinning equipment arranged in the way has the advantages that the electric field intensity generated under the condition of the same voltage is high, the nanofiber yield is high, the spinning efficiency can be greatly improved, the spinning stability and uniformity can be improved, and the nanofibers produced by the point electrode are small in diameter and uniform in distribution, so that the requirements on the yield and the diameter of the nanofibers in the market can be met; meanwhile, the electric field intensity generated by the point electrode is high, so that the starting voltage required during spinning is low, and the energy consumption is low.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electrospinning device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a first spinning electrode of an electrospinning device according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a second spinning electrode of the electrospinning device according to the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a third spinning electrode of an electrospinning device according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a fourth spinning electrode of an electrospinning device according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of various point electrodes of an electrospinning apparatus provided by an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a solution tank of an electrospinning device according to an embodiment of the present invention.
Wherein:
1-spinning electrode, 11-lattice spinning unit, 111-point electrode, 112-metal bar, 12-rotating shaft, 2-solution tank, 21-sealing cover, 211-liquid outlet, 3-high voltage direct current power supply, 4-collecting electrode and 5-spinning area.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide electrostatic spinning equipment which can improve the spinning stability, uniformity and spinning efficiency, and simultaneously, the produced nano-fibers have small diameters and are uniformly distributed.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
It should be noted that the following directional terms such as "upper end, lower end, left side, right side" and the like are defined based on the drawings of the specification.
Referring to fig. 1 to 7, fig. 1 is a schematic structural diagram of an electrostatic spinning apparatus according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of a first spinning electrode of an electrospinning device according to an embodiment of the present invention; FIG. 3 is a schematic structural diagram of a second spinning electrode of the electrospinning device according to the embodiment of the present invention; FIG. 4 is a schematic structural diagram of a third spinning electrode of an electrospinning device according to an embodiment of the present invention; FIG. 5 is a schematic structural diagram of a fourth spinning electrode of an electrospinning device according to an embodiment of the present invention; FIG. 6 is a schematic diagram of various point electrodes of an electrospinning apparatus provided by an embodiment of the present invention; fig. 7 is a schematic structural diagram of a solution tank of an electrospinning device according to an embodiment of the present invention.
As shown in fig. 1, the electrostatic spinning apparatus provided by the embodiment of the present invention includes a spinning electrode 1, a collecting electrode 4 and a solution tank 2, wherein the solution tank 2 is used for containing a spinning solution, at least a part of the spinning electrode 1 is immersed in the spinning solution in the solution tank 2, the collecting electrode 4 is disposed at a position right above the spinning electrode 1, and the collecting electrode 4 may be grounded or connected with a potential opposite to that of the spinning electrode 1; the spinning electrode 1 is connected with a high-voltage direct current power supply 3, and the high-voltage direct current power supply 3 can charge the spinning electrode 1 so as to generate potential difference between the spinning electrode 1 and the collecting electrode 4. Thus, the spinning electrode 1 and the collecting electrode 4 can form the spinning area 5 under the action of the electric field, and the spinning operation is carried out. The distance between the spinning electrode 1 and the collecting electrode 4 ranges from 100 to 500 mm.
As a specific example, the collecting electrode 4 is driven to rotate by a driving device, for example, the collecting electrode 4 is driven to rotate by a motor at a speed of 40 rpm, not shown in the figure, and the collecting electrode 4 can take various forms including a flat plate, a mesh chain or a roller; the high-voltage direct-current power supply 3 is connected with the spinning electrode 1 and is used for generating nano fibers; the collecting electrode 4 is connected to a ground electrode for receiving the produced nanofibres.
In addition, the electrospinning device provided by the embodiment of the present invention can form nanofibers using an aqueous polymer solution having a viscosity of 1200mpa.s and containing PVA (polyvinyl alcohol, average molecular weight of 146000 to 186000, 96% hydrolyzed). Of course, other polymer solutions may be used for producing nanofibers, and the polymer solution in the solution tank 2 may be connected to the high voltage dc power supply 3 via a submerged electrode (not shown). When spinning is performed, the high voltage direct current power supply 3 charges the polymer solution so that a potential difference of about 65kV is generated between the spinning electrode 1 and the collecting electrode 4.
Of course, the solution tank 2 may also be connected to a liquid storage device, and the liquid supply of the solution tank 2 by the liquid storage device is continuous by an infusion pump.
In order to improve spinning efficiency and to produce nanofibers with diameters that meet market demands, the spinning electrode 1 includes a plurality of dot matrix spinning units 11 having dot electrodes 111, and spinning is performed by rotating all the dot matrix spinning units 11 to supply a spinning solution to the spinning zone 5 through the dot electrodes 111.
That is, the spinning solution is brought to the spinning area 5 by the rotation of all the dot matrix spinning units 11, under the action of the high-voltage electric field, the dot electrodes 111 carrying the spinning solution in the dot matrix spinning units 11 can form solution jet flow, the solution jet flow flies to the collecting electrode 4 under the action of the electric field force and is continuously drawn and thinned, and finally, the fibers are deposited on the collecting electrode 4 to form a uniform fiber film.
Compared with the traditional arrangement mode of electrostatic spinning by adopting a roller type electrode, the electrostatic spinning equipment arranged in the way has the advantages that the electric field intensity generated under the condition of the same voltage is high, the nanofiber yield is high, the spinning efficiency can be greatly improved, the spinning stability and uniformity can be improved, and the nanofibers produced by the point electrode 111 are small in diameter and uniform in distribution, so that the requirements on the yield and the diameter of the nanofibers in the market can be met; meanwhile, the electric field intensity generated by the point electrode 111 is high, so that the starting voltage required during spinning is low, and the energy consumption is low.
Further, the spinning electrode 1 further comprises a rotating shaft 12 arranged along the rotating center line of the spinning electrode 1, the rotating shaft 12 is used for driving all the dot matrix spinning units 11 to rotate, the rotating shaft 12 can be connected with corresponding transmission mechanisms and driving motors, and all the dot matrix spinning units 11 are distributed along the axial direction of the rotating shaft 12.
The spinning electrode 1 can have different shapes and structures, namely, the spinning electrode 1 takes a single lattice spinning unit 11 as a basic spinning unit, a plurality of unit combinations can be formed, the spinning efficiency is improved, and the distance between any two adjacent lattice spinning units 11 ranges from 20mm to 400 mm. The spinning electrode 1 as a whole includes, but is not limited to, a cylindrical shape, an elliptical shape, a spiral shape, a conical shape, etc., all of which are three-dimensional shapes advantageous for improving spinning efficiency and reducing the diameter of the produced fiber. Of course, the spinning electrode 1 may have any combination of the above three-dimensional shapes, and the present invention is not limited to this.
Specifically, any one of the lattice spinning units 11 may be of an axisymmetric structure or a non-axisymmetric structure, and the pitch between the dot electrodes 111 in any two adjacent lattice spinning units 11 ranges from 2mm to 200 mm.
The following describes the spinning electrode 1 and the lattice spinning unit 11 in different structures by different embodiments.
The first embodiment: as shown in figures 2 and 3, the spinning electrode 1 is cylindrical, any lattice spinning unit 11 is a lattice spinning unit distributed in a star-shaped manner, the number of the formed cylinders is more than or equal to 1, the diameter range of the cylinders is 80-200mm, and the length of the cylinders is more than or equal to 10 mm.
In this embodiment, any dot matrix spinning unit 11 includes a plurality of metal rods 112 arranged along the radial direction, one end of each metal rod 112 is fixed to the rotating shaft 12, the other end is fixed to a dot electrode 111, and the dot electrodes 111 and the metal rods 112 are arranged in a one-to-one correspondence. Of course, the metal rod 112 can also be disposed to vertically pass through the rotating shaft 12, and both ends of the metal rod 112 are fixedly connected with the point electrodes 111. The number of the metal rods 112 can be adjusted according to the requirement, and all the metal rods 112 in any lattice spinning unit 11 are coplanar and have the same length; meanwhile, any dot matrix spinning unit 11 can be circular, the metal rods 112 are arranged along the diameter direction, and the lengths of the same metal rod 112 at two sides of the rotating shaft 12 are equal.
In addition, the pitches of any two adjacent dot matrix spinning units 11 are equal, and the lengths of the metal rods 112 in any two adjacent dot matrix spinning units 11 are equal.
The second embodiment: as shown in FIG. 4, the spinning electrode 1 is oval, any lattice spinning unit 11 is specifically a lattice spinning unit 11 distributed in a star shape, the structure of the lattice spinning unit 11 can refer to the structure of the lattice spinning unit 11 in the first embodiment, the diameter range of any lattice spinning unit 11 is 5-200mm, and the oval length is more than or equal to 20 mm.
It should be noted that, unlike the first embodiment, the lengths of the metal rods 112 in any two adjacent dot matrix spinning units 11 are different, and the lengths of the metal rods 112 are tapered from the center to both ends of the spinning electrode 1.
Third embodiment: as shown in fig. 5, the spinning electrode 1 is spiral, any dot matrix spinning unit 11 includes a metal rod 112, the metal rod 112 vertically passes through the rotating shaft 12, both ends of the metal rod 112 are fixedly connected with the dot electrodes 111, the same metal rod 112 is located at both sides of the rotating shaft 12 and has the same length, all the metal rods 112 have the same length, the center distance between any two metal rods 112 is also the same, and in this embodiment, all the dot electrodes 111 are distributed in a double-spiral structure.
It should be noted that each point electrode 111 in the spinning electrode 1 can perform spinning, and the point electrode 111 can be configured into various three-dimensional shapes, including a sphere, a hemisphere, a cylinder, a cone, a diamond, a polyhedron, a bar, or other three-dimensional structural combinations, as shown in fig. 6. When the point electrode 111 is spherical or hemispherical, its diameter ranges from 2 to 20 mm; when the point electrode 111 is cylindrical, the diameter range of the cylinder is 2-20mm, and the length range of the cylinder is 1-10 mm; when the point electrode 111 is a cone or a diamond, the side length range is 2-30 mm; when the dot electrode 111 is in the form of a strip, the thickness thereof ranges from 0.1 to 10mm, the length thereof ranges from 0.5 to 30mm, and the height thereof ranges from 2 to 30 mm. Spherical spot electrodes are preferred herein.
In addition, the diameter of the metal rod 112 connected to the point electrode 111 should be much smaller than that of the point electrode 111, and the length of the metal rod 112 is much greater than the size of the point electrode 111, so that the electric field generated by the metal rod 112 and the rotating shaft 12 does not affect the spinning process of the point electrode 111.
Of course, according to actual requirements, any point electrode 111 is made of conductive material, and in a preferred mode, the point electrode 111 and its connection point electrode 111 and the metal rod 112 of the rotating shaft 12 are made of stainless steel, and the solution tank 2 is made of non-conductive material. The non-conductive material may be selected from polytetrafluoroethylene, polycarbonate, polyamide, polypropylene, polyethylene terephthalate, polysulfone, polyether, polyetheretherketone, polyimide, ceramic, rubber, or the like. It should be noted that, whatever the material used, the solution tank 2 is preferably inert to the spinning solution, for example, not soluble in the polymer solution.
In order to optimize the above embodiment, the above solution tank 2 is provided with a sealing cover 21, and the arrangement of the sealing cover 21 is advantageous to prevent the spinning solution from volatilizing. The sealing cover 21 may be made of an insulating material such as plastic or ceramic.
In order to ensure the smooth proceeding of the spinning process, the sealing cover 21 is provided with a plurality of liquid outlet holes 211 which are arranged in one-to-one correspondence with the lattice spinning units 11, and the liquid outlet holes 211 are used for the lattice spinning units 11 to rotate and take out the spinning solution. The liquid outlet holes 211 may be designed according to the structure of the dot matrix spinning unit 11, provided that the position and size of the liquid outlet holes 211 allow the dot electrodes 111 and the metal rods 112 in the dot matrix spinning unit 11 to rotate through, as shown in fig. 7.
In this way, the spinning solution in the solution tank 2 is sealed by the sealing cap 21 during the whole spinning process, so that the solvent can be effectively prevented from volatilizing to ensure the stability of the solution. Each point electrode 111 of the spinning electrode 1 can generate high electric field intensity in concentrated distribution, the spinning efficiency is high, and the spinning solution taken out of the solution tank 2 by the point electrode 111 forms nano fibers under the action of electric field force; the solvent volatilization in the whole electrostatic spinning equipment is greatly reduced, and the stability of the fiber production process is ensured.
Experiments prove that when the spinning electrode 1 is cylindrical, the point electrodes 111 are strip-shaped (the thickness is 2mm, the length is 15mm, and the height is 6mm), the distance between the adjacent point electrodes 111 is 40mm, the diameter of the metal rod 112 is 1mm, the distance between the spinning electrode 1 and the collecting electrode 4 is 250mm, the solution tank 2 is made of polypropylene plastic, and the external voltage is 65kV when spinning is carried out, so that the average diameter of the prepared PVA nanofiber is 335nm, and the average yield is 27.3 g/h.
When the spinning electrode 1 is in an oval shape, the dot electrode 111 is in a spherical shape, the diameter of the dot electrode 111 is 8mm, the distance between the adjacent dot electrodes 111 is 40mm, the diameter of the metal rod 112 is 1.5mm, the distance between the spinning electrode 1 and the collecting electrode 4 is 250mm, the solution tank 2 is made of polypropylene plastic, and when spinning is carried out, the external voltage is 70kV, so that the average diameter of the prepared PVA nanofiber is 320nm, and the average yield is 29 g/h.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The electrospinning device provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are provided only to help understand the concepts of the present invention and the core concepts thereof. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. An electrostatic spinning apparatus, characterized by comprising a spinning electrode (1), a collecting electrode (4) and a solution tank (2) for containing a spinning solution, at least one part of the spinning electrode (1) is immersed in the spinning solution in the solution tank (2), the spinning electrode (1) and the collecting electrode (4) are both formed with a spinning zone (5) under the action of an electric field, the spinning electrode (1) comprises a plurality of dot matrix spinning units (11) with dot electrodes (111), and the spinning solution is fed into the spinning zone (5) through the dot electrodes (111) for spinning by the rotation of all the dot matrix spinning units (11).
2. The electrospinning device according to claim 1, further comprising a rotating shaft (12) disposed along the rotation center line of the spinning electrode (1) for driving all the dot matrix spinning units (11) to rotate, wherein all the dot matrix spinning units (11) are distributed along the axial direction of the rotating shaft (12).
3. The electrospinning device according to claim 2, wherein any of the lattice spinning units (11) is embodied as a lattice spinning unit arranged in a star-shaped distribution.
4. An electrospinning device according to claim 3, wherein any of the dot matrix spinning units (11) comprises a plurality of radially arranged metal rods (112), one end of the metal rods (112) is fixed to the rotating shaft (12), and the other end is fixed to the dot electrode (111).
5. An electrospinning device according to claim 3, wherein the pitch of any two adjacent dot matrix spinning units (11) is equal.
6. The electrospinning device of claim 4, wherein the lengths of the metal rods (112) in any two adjacent dot matrix spinning units (11) are the same.
7. Electrospinning device according to claim 2, wherein the spinning electrode (1) is embodied as a helical spinning electrode.
8. Electrostatic spinning apparatus according to any of claims 1 to 7, characterized in that said solution tank (2) is provided with a sealing lid (21) to prevent the spinning solution from evaporating.
9. An electrospinning device according to claim 8, wherein the sealing lid (21) is provided with a plurality of outlet holes (211) which are arranged in one-to-one correspondence with the dot matrix spinning units (11) and are used for bringing the dot matrix spinning units (11) out of the spinning solution.
10. The electrospinning device of claim 8, wherein any of the point electrodes (111) is spherical, cylindrical or conical in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011253981.2A CN112430858B (en) | 2020-11-11 | 2020-11-11 | Electrostatic spinning equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011253981.2A CN112430858B (en) | 2020-11-11 | 2020-11-11 | Electrostatic spinning equipment |
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| CN112430858A true CN112430858A (en) | 2021-03-02 |
| CN112430858B CN112430858B (en) | 2022-06-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235173A (en) * | 2021-06-24 | 2021-08-10 | 青岛大学 | Electrostatic spinning equipment |
| CN115386972A (en) * | 2022-09-05 | 2022-11-25 | 广东石油化工学院 | Cam-driven wire-mesh electrospinning device and method of use thereof |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115386972A (en) * | 2022-09-05 | 2022-11-25 | 广东石油化工学院 | Cam-driven wire-mesh electrospinning device and method of use thereof |
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