CN115467033A - Telescopic liquid-carrying needle-free electrostatic spinning device - Google Patents
Telescopic liquid-carrying needle-free electrostatic spinning device Download PDFInfo
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- CN115467033A CN115467033A CN202211136052.2A CN202211136052A CN115467033A CN 115467033 A CN115467033 A CN 115467033A CN 202211136052 A CN202211136052 A CN 202211136052A CN 115467033 A CN115467033 A CN 115467033A
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- 238000010041 electrostatic spinning Methods 0.000 title claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 97
- 239000002184 metal Substances 0.000 claims abstract description 90
- 239000007921 spray Substances 0.000 claims abstract description 50
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 238000009987 spinning Methods 0.000 claims abstract description 36
- 239000002121 nanofiber Substances 0.000 claims abstract description 28
- 238000005507 spraying Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000007711 solidification Methods 0.000 claims abstract description 5
- 230000008023 solidification Effects 0.000 claims abstract description 5
- 230000008021 deposition Effects 0.000 claims abstract description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 12
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 12
- 238000001523 electrospinning Methods 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 15
- 229920000642 polymer Polymers 0.000 description 12
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- 229920002239 polyacrylonitrile Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005686 electrostatic field Effects 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000520 microinjection Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229920005594 polymer fiber Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006557 surface reaction Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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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
- 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
-
- 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
- D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
-
- 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
- D01D5/0092—Electro-spinning characterised by the electro-spinning apparatus characterised by the electrical field, e.g. combined with a magnetic fields, using biased or alternating fields
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention discloses a telescopic liquid-carrying needleless electrostatic spinning device, which comprises: the electrostatic spinning liquid spraying mechanism comprises a base and a metal spray head, wherein a containing groove is formed in the base, the shape of the metal spray head is matched with that of the containing groove, and the metal spray head is opened under the control of a control switch and moves up and down in the containing groove in a reciprocating manner; the liquid supply mechanism is used for supplying spinning liquid to the electrostatic spinning liquid spraying mechanism; the nanofiber collecting mechanism is positioned above the electrostatic spinning liquid spraying mechanism and is used for receiving spinning liquid sprayed out of the electrostatic spinning liquid spraying mechanism and carrying out solidification and deposition; and a high voltage generator for slowly increasing the voltage to a set spinning voltage. The invention adopts the metal spray head and the base, and the metal spray head reciprocates up and down in the base to realize the liquid carrying process of electrostatic spinning, thereby being beneficial to continuously and stably spinning for a long time and simultaneously reducing the requirement on the liquid supply precision of the electrostatic spinning.
Description
Technical Field
The invention relates to the technical field of spinning, in particular to a telescopic liquid-carrying needle-free electrostatic spinning device and a using method thereof.
Background
A series of surprising properties occur when polymer fiber diameters are reduced from the micrometer scale to the submicrometer scale or the nanometer scale. For example, the specific surface area of the nano fiber is about 1000 times of that of the micron fiber, so that the surface functionalization can be flexibly carried out; compared with other known material forms, the nanofiber also shows excellent effects and mechanical properties, such as surface and interface effects, small-size effects, quantum tunneling effects, rigidity, tensile strength and the like, and the excellent properties make the nanofiber become a first choice material for many important applications, so that the nanofiber has great development potential in the fields of high-efficiency filtration, biomedicine, intelligent sensing and the like. Considering the feasibility of operation, stability and controllability (including fiber diameter and distribution), material range, time consumption, etc., electrostatic spinning technology has become the only method for producing continuous polymer nanofibers. With the rise and rapid development of the science of the nano materials, the preparation of the nano fibers by using the electrostatic spinning method becomes a research hotspot of the engineering material science community.
The traditional single-needle electrostatic spinning device is simple and mainly comprises a high-voltage power supply system, a liquid supply system and a collection system. The liquid supply system comprises a micro-injection pump, a medical needle tube and a plain end metal needle head, the flow of the high polymer solution is controlled by the micro-injection pump, the anode of the high-voltage power supply is connected with the plain end metal needle head, and the collection system is a metal flat plate and is grounded. High voltage power supply voltage crescent, the liquid drop of metal syringe needle forms taylor's awl gradually, and when high voltage power supply voltage further increases, the electric field force can overcome effects such as surface tension, the viscous force of high polymer solution and can appear whipping phenomenon and reach ground connection metal collection board then, and at this in-process, the solvent volatilizees, and the high polymer solidification forms the nanofiber deposit on metal collection board.
The yield of the nano-fiber obtained by the traditional electrostatic spinning device is very low, and the requirement of the nano-fiber in mass application is difficult to meet. The single-needle electrostatic spinning device also has the problem that the needle is easy to block, and cannot adapt to long-time continuous and stable production.
At present, electrostatic spinning nanofiber batch preparation devices have some reports at home and abroad. Chinese patent 201510278266.7 discloses an air-jet-assisted multi-needle electrostatic spinning device which can improve the yield of nanofibers in unit time, has no limitation on the spinning direction, but has the defect that needles are easy to block. Meanwhile, the mutual influence among electric fields after high-voltage static electricity is applied is considered in the arrangement mode of the needles, so that the multi-needle electrostatic spinning device is complicated and complex in design and difficult to realize batch production of nanofiber products with controllable fiber diameter distribution;
chinese patent 200710036447.4 discloses an air-jet electrostatic spinning device, which forms bubbles on the free liquid surface of high polymer by introducing gas at the bottom of a liquid tank, and the bubbles form taylor cones and multi-jet flows under the action of electric field force to improve the yield of nano-fibers, but bubble fragments with different shapes and sizes are stretched by the electric field force while the taylor cones are formed and broken, so that the diameter distribution of the fibers is wider.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention discloses a telescopic liquid-carrying needle-free electrostatic spinning device.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention discloses a telescopic liquid-carrying needleless electrostatic spinning device, which comprises:
the electrostatic spinning liquid spraying mechanism is used for spraying spinning liquid upwards, and comprises a base and a metal nozzle, wherein a containing groove is formed in the base, the shape of the metal nozzle is matched with that of the containing groove, and the metal nozzle is opened under the control of a control switch and moves up and down in the containing groove in a reciprocating manner;
the liquid supply mechanism is used for supplying spinning liquid to the electrostatic spinning liquid spraying mechanism and is communicated with the side wall of the bottom of the accommodating groove;
the nanofiber collecting mechanism is positioned above the electrostatic spinning liquid spraying mechanism and is used for receiving spinning liquid sprayed out of the electrostatic spinning liquid spraying mechanism and carrying out solidification and deposition; and (c) a second step of,
and the high-voltage generator is used for slowly increasing the voltage to a set spinning voltage, and the metal spray head is connected with the anode of the high-voltage generator.
Preferably, the metal nozzle is overall in a cross shape, and the accommodating grooves are corresponding cross-shaped grooves.
Further preferably, the length of the metal spray nozzle is 40-400 mm, the line width of the metal spray nozzle is 1-10 mm, and round corners with the radius of 0.2-5 mm are respectively chamfered at the edges of the metal spray nozzle.
More preferably, the top of the metal showerhead has a lower center and a higher edge, and forms an inclination angle of 5 to 45 ° with respect to the horizontal end surface of the base.
Preferably, the top of the base is provided with a hollow inverted conical groove, the inverted conical groove is communicated with the cross-shaped groove, and when the metal spray head moves upwards to be higher than the cross-shaped groove, the inverted conical groove can surround the upper part of the metal spray head.
Preferably, the base is a polytetrafluoroethylene base.
Preferably, the liquid supply mechanism comprises a liquid storage tank, a liquid guide pipe and an insulating liquid supply pump, and the liquid storage tank is communicated with the side wall of the bottom of the accommodating groove through the liquid guide pipe and the insulating liquid supply pump.
Preferably, the nanofiber collecting mechanism comprises a roller and a driving motor, the driving motor is connected with the roller, and the roller is grounded.
Preferably, the roller is a metal cylindrical roller, and the diameter of the metal cylindrical roller is 80-1200 mm; and/or the rotating speed of the driving motor is 0-100 r/min.
Preferably, the voltage regulating range of the high-voltage generator is 0-100 KV.
Compared with the prior art, the invention has at least the following advantages:
the telescopic carrier liquid needleless electrostatic spinning device provided by the invention adopts the metal spray nozzle and the base, and the metal spray nozzle realizes the carrier liquid process of electrostatic spinning in a vertically reciprocating motion mode in the base, so that the long-time continuous and stable spinning is facilitated, and the requirement on the accuracy of electrostatic spinning liquid supply is reduced;
the metal spray head adopted by the telescopic liquid-carrying needle-free electrostatic spinning device provided by the invention is in a cross-shaped overall shape, the space symmetric design of the metal spray head and the continuous loading of the metal spray head with new spinning liquid can realize multi-jet continuous space symmetric stretching, the consistency of multi-jet excitation positions and a space stretching process is high, and the continuous batch preparation of nano fibers with narrow diameters can be realized;
the telescopic liquid-carrying needle-free electrostatic spinning device provided by the invention is simple and easy to operate, and has great application potential in the fields of energy, filtration, biology and medical treatment;
the telescopic liquid-carrying needle-free electrostatic spinning device provided by the invention is simple and reasonable in structure, good in stability and low in manufacturing cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
Fig. 1 is a schematic structural diagram of a telescopic carrier liquid needleless electrostatic spinning device disclosed in the embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an electrostatic spinning liquid spraying mechanism disclosed in an embodiment of the present invention;
FIG. 3 is a front view of an electrostatic spinning liquid spraying mechanism according to an embodiment of the present invention;
FIG. 4 is a top view of an electrostatic spinning spray mechanism according to an embodiment of the present invention;
FIG. 5 is a schematic view of a metal showerhead according to an embodiment of the present invention;
FIG. 6 is a front view of a metal showerhead disclosed in an embodiment of the present invention;
FIG. 7 is a top view of a metal showerhead disclosed in an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a base according to an embodiment of the present invention;
FIG. 9 is a front view of the disclosed base in accordance with an embodiment of the present invention;
fig. 10 is a top view of a base disclosed in an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.
Referring to fig. 1-10, a telescopic carrier liquid needle-free electrospinning device comprises:
the electrostatic spinning liquid spraying mechanism is used for spraying spinning liquid upwards, and comprises a base 1 and a metal spray head 3, wherein a containing groove is formed in the base 1, the shape of the metal spray head 3 is matched with that of the containing groove, and the metal spray head 3 is opened under the control of a control switch and reciprocates up and down in the containing groove;
the liquid supply mechanism 8 is used for supplying spinning liquid to the electrostatic spinning liquid spraying mechanism, and the liquid supply mechanism 8 is communicated with the side wall of the bottom of the containing groove;
the nanofiber 7 collecting mechanism is positioned above the electrostatic spinning liquid spraying mechanism, and the nanofiber 7 collecting mechanism is used for receiving the spinning liquid sprayed out of the electrostatic spinning liquid spraying mechanism and carrying out solidification and deposition; and (c) a second step of,
the high voltage generator 2 is used for slowly increasing the voltage to the set spinning voltage, and the metal spray head 3 is connected with the anode of the high voltage generator 2.
The liquid carrying process of the metal spray nozzle 3 is that the metal spray nozzle 3 moves downwards and is completely immersed in the spinning solution in the base 1;
the spinning process of the metal spray head 3 is that the metal spray head 3 moves upwards from the position of immersing the spinning solution to a working position which is a certain distance (10-30 mm) higher than the level of the spinning solution.
The telescopic liquid-carrying needle-free electrostatic spinning device adopts the metal spray nozzle 3 and the base 1, and the liquid-carrying process of electrostatic spinning is realized in the form of up-down reciprocating motion of the metal spray nozzle 3 in the base 1, so that the long-time continuous stable spinning is facilitated, and meanwhile, the requirement on the liquid supply precision of the electrostatic spinning is reduced.
As shown in fig. 2-7, the metal nozzle 3 is a cross shape, and the accommodating grooves are corresponding cross-shaped grooves 12.
Specifically, the length of the metal spray nozzle 3 is 40-400 mm, the line width of the metal spray nozzle 3 is 1-10 mm, and round corners with the radius of 0.2-5 mm are respectively chamfered at the edges of the metal spray nozzle 3.
The top of the metal nozzle 3 is low in center and high in edge, and forms an inclination angle of 5-45 degrees relative to the horizontal end face of the base 1.
As shown in fig. 8 to 10, the base 1 has a hollow inverted conical recess 11 at the top, and the inverted conical recess 11 communicates with the cross-shaped recess so that the inverted conical recess can surround the upper portion of the metal nozzle 3 when the metal nozzle 3 moves upward above the cross-shaped recess. The base 1 is made of polytetrafluoroethylene.
The design of the inverted conical groove forms an inverted conical surrounding space, and the inverted conical surrounding space can hold a small amount of spinning liquid which is not solidified before the spinning liquid is sprayed out of the metal spray head 3, so that the spinning liquid is prevented from falling out of the base 1 from the base 1, and the environmental pollution is avoided.
The whole metal spray nozzle 3 is in a cross-shaped line shape, the space symmetrical design of the metal spray nozzle 3 and the continuous loading of the metal spray nozzle 3 with the new spinning solution can realize the continuous space symmetrical stretching of the multi-jet flow 4, the consistency of the excitation position of the multi-jet flow 4 and the space stretching process is high, and the continuous batch preparation of the nano fibers 7 with narrow diameter distribution can be realized;
referring to fig. 1, the liquid supply mechanism 8 includes a liquid storage tank 83, a liquid guide pipe 81 and an insulating liquid supply pump 82, and the liquid storage tank 83 is communicated with the bottom side wall of the containing tank through the liquid guide pipe 81 and the insulating liquid supply pump 82. The nanofiber 7 collecting mechanism comprises a roller 6 and a driving motor 5, the driving motor 5 is connected with the roller 6, and the roller 6 is grounded. The roller 6 is a metal cylindrical roller, and the diameter of the roller is 80 mm-1200 mm; the rotating speed of the driving motor 5 is 0-100 r/min; the voltage regulating range of the high voltage generator 2 is 0-100 KV.
The method for electrostatic spinning by using the telescopic carrier liquid needleless electrostatic spinning device comprises the following steps:
1) Adjusting the distance between the metal cylindrical roller and the polytetrafluoroethylene base 1;
2) Opening a driving motor 5 of the metal cylindrical roller and setting a rotating speed;
3) Opening a switch of the liquid supply mechanism 8, quickly injecting a certain amount of high polymer spinning solution into the polytetrafluoroethylene base 1 through the insulating liquid supply pump 82 and the liquid guide pipe 81, and continuously supplying liquid;
4) Opening a control switch of the metal spray nozzle 3 to enable the metal spray nozzle to reciprocate up and down in the polytetrafluoroethylene base 1, namely repeating the processes of complete immersion and a certain distance above the liquid level of the spinning solution;
5) Opening a switch of the high-voltage generator 2, and slowly increasing the voltage to the required spinning voltage;
6) A large amount of jet flow 4 is generated on the surface of the metal spray head 3;
7) The jet flow 4 flies to the metal cylinder roller under the action of the high-voltage electrostatic field, the solvent is volatilized, and the jet flow 4 is stretched, solidified and deposited on the metal cylinder roller to form a large number of nano fibers 7.
The technical contents of the invention will be further described with reference to the accompanying drawings and more specific embodiments.
Example 1:
next, nanofibers 7 were prepared using a high polymer solution prepared from Polyacrylonitrile (PAN) and N-N Dimethylformamide (DMF), and the mass fraction of PAN in the high polymer solution was 14%. Adjusting the distance between the metal cylindrical roller and the polytetrafluoroethylene base 1 to be 20cm; opening a driving motor 5 of the metal cylindrical roller, and setting the rotating speed to be 120r/min; opening a switch of the liquid supply mechanism 8, quickly injecting high polymer spinning liquid which just can completely immerse the metal spray nozzle 3 into the polytetrafluoroethylene base 1 through the insulating liquid supply pump 82, and then setting the continuous liquid supply speed to be 10mL/h; opening a control switch of the metal spray nozzle 3 to enable the metal spray nozzle to reciprocate up and down in the polytetrafluoroethylene base 1, namely repeating the processes of complete immersion and a certain distance above the liquid level of the spinning solution; opening a switch of the high-voltage generator 2, and slowly increasing the voltage to 65kV; a large amount of jet flow 4 is generated on the surface of the metal spray head 3; the jet flow 4 flies to the metal cylinder roller under the action of the high-voltage electrostatic field, the solvent is volatilized, and the jet flow 4 is stretched, solidified and deposited on the metal cylinder roller to form a large number of nano fibers 7.
Example 2:
next, nanofiber 7 was prepared using a polymer solution prepared from Polyacrylonitrile (PAN) and N-N Dimethylformamide (DMF), and the mass fraction of PAN in the polymer solution was 12%. Adjusting the distance between the metal cylindrical roller and the polytetrafluoroethylene base 1 to be 18cm; opening a driving motor 5 of the metal cylindrical roller, and setting the rotating speed to be 100r/min; opening a switch of the liquid supply device, quickly injecting high polymer spinning liquid which just enables the metal spray head 3 to be completely immersed into the polytetrafluoroethylene base 11 through the insulating liquid supply pump 82, and then setting the continuous liquid supply speed to be 6mL/h; opening the metal spray head 3 to control the switch, enabling the metal spray head to reciprocate up and down in the polytetrafluoroethylene base 1, and repeating the processes of complete immersion and a certain distance above the liquid level of the spinning solution; opening a switch of the high-voltage generator 2, and slowly increasing the voltage to 65kV; a large amount of jet flow 4 is generated on the surface of the metal spray head 3; the jet flow 4 flies to the metal cylinder roller under the action of the high-voltage electrostatic field, the solvent is volatilized, and the jet flow 4 is stretched, solidified and deposited on the metal cylinder roller to form a large number of nano fibers 7.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The telescopic liquid-carrying needle-free electrostatic spinning device is characterized in that: the method comprises the following steps:
the electrostatic spinning liquid spraying mechanism is used for spraying spinning liquid upwards, and comprises a base and a metal nozzle, wherein a containing groove is formed in the base, the shape of the metal nozzle is matched with that of the containing groove, and the metal nozzle is opened under the control of a control switch and moves up and down in the containing groove in a reciprocating manner;
the liquid supply mechanism is used for supplying spinning liquid to the electrostatic spinning liquid spraying mechanism and is communicated with the side wall of the bottom of the accommodating groove;
the nanofiber collecting mechanism is positioned above the electrostatic spinning liquid spraying mechanism and used for receiving spinning liquid sprayed out of the electrostatic spinning liquid spraying mechanism and carrying out solidification and deposition; and the number of the first and second groups,
and the high-voltage generator is used for slowly increasing the voltage to a set spinning voltage, and the metal spray head is connected with the anode of the high-voltage generator.
2. The telescopic carrier liquid needle-free electrospinning device of claim 1, wherein: the metal sprayer is overall in a cross shape, and the accommodating grooves are corresponding cross-shaped grooves.
3. The telescopic carrier liquid needle-free electrospinning device of claim 2, wherein: the length of the metal spray nozzle is 40-400 mm, the line width of the metal spray nozzle is 1-10 mm, and fillets with the radius of 0.2-5 mm are all chamfered at the edges of the metal spray nozzle.
4. The telescopic carrier liquid needle-free electrospinning device of claim 2, wherein: the top of the metal spray head is low in center and high in edge, and forms an inclination angle of 5-45 degrees relative to the horizontal end face of the base.
5. The electrostatic spinning device of claim 4, wherein: the metal sprayer is characterized in that a hollow inverted conical groove is formed in the top of the base and communicated with the cross-shaped groove, and when the metal sprayer moves upwards to be higher than the cross-shaped groove, the inverted conical groove can surround the upper portion of the metal sprayer.
6. The telescopic carrier liquid needle-free electrospinning device of claim 1, wherein: the base adopts the polytetrafluoroethylene base.
7. The telescopic carrier liquid needleless electrospinning device of claim 1, wherein: the liquid supply mechanism comprises a liquid storage tank, a liquid guide pipe and an insulating liquid supply pump, and the liquid storage tank is communicated with the side wall of the bottom of the accommodating groove through the liquid guide pipe and the insulating liquid supply pump.
8. The telescopic carrier liquid needle-free electrospinning device of claim 1, wherein: the nanofiber collecting mechanism comprises a roller and a driving motor, the driving motor is connected with the roller, and the roller is grounded.
9. The telescopic carrier liquid needleless electrospinning device of claim 8, wherein: the roller is a metal cylindrical roller, and the diameter of the roller is 80-1200 mm; and/or the rotating speed of the driving motor is 0-100 r/min.
10. The telescopic carrier liquid needle-free electrospinning device of claim 1, wherein: the voltage regulating range of the high-voltage generator is 0-100 KV.
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| CN202211136052.2A CN115467033B (en) | 2022-09-19 | 2022-09-19 | Telescopic carrier liquid needleless electrostatic spinning device |
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| CN104593880A (en) * | 2015-01-15 | 2015-05-06 | 东华大学 | Electrostatic spinning device for producing polymer nano fibers in batches |
| CN106757418A (en) * | 2016-11-08 | 2017-05-31 | 南通新澳新材料科技有限公司 | A kind of electrostatic spinning nano fiber generating means |
| CN106757423A (en) * | 2017-01-24 | 2017-05-31 | 厦门大学 | Vibration Multi-tip electrostatic spinning apparatus |
| CN109837597A (en) * | 2019-03-21 | 2019-06-04 | 东华大学 | A kind of controllable free liquid level mushroom-head electrostatic spinning nozzle and its application method suitable for high-speed motion |
| CN110241467A (en) * | 2019-05-23 | 2019-09-17 | 东华大学 | Inner cone angie type electrostatic spinning apparatus and its application method |
| CN211872154U (en) * | 2020-03-10 | 2020-11-06 | 苏州大学 | Stirring type large-batch free liquid level electrostatic spinning device |
| CN211814726U (en) * | 2020-03-20 | 2020-10-30 | 苏州大学 | Telescopic large-batch free liquid level electrostatic spinning device |
| KR20220037010A (en) * | 2020-09-16 | 2022-03-24 | 주식회사 창명산업 | An electrospinning apparatus having disc-type electrospinning members |
| CN112481712A (en) * | 2020-12-15 | 2021-03-12 | 苏州大学 | Rotatable lifting type sawtooth electrostatic spinning device |
| CN214004861U (en) * | 2020-12-15 | 2021-08-20 | 苏州大学 | Rotatable lifting type sawtooth electrostatic spinning device |
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