CN112609249A - Electrostatic spinning device capable of preparing core-shell structure nanofibers in batches - Google Patents
Electrostatic spinning device capable of preparing core-shell structure nanofibers in batches Download PDFInfo
- Publication number
- CN112609249A CN112609249A CN202110024377.0A CN202110024377A CN112609249A CN 112609249 A CN112609249 A CN 112609249A CN 202110024377 A CN202110024377 A CN 202110024377A CN 112609249 A CN112609249 A CN 112609249A
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- gear
- spinning solution
- shell
- storage tank
- chain
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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
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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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
Abstract
The invention relates to an electrostatic spinning device capable of preparing core-shell structure nanofibers in batches, which comprises a liquid storage tank, a first gear, a second gear, a driving liquid supply mechanism, a high-voltage power supply and a receiving mechanism, wherein the first gear is arranged in the liquid storage tank; the second gear comprises an opening tip part, the tip part is meshed with the chain, the chain drives through the liquid storage tank to store the shell spinning solution in the pitch of the chain, when the pitch with the shell spinning solution moves to the opening tip part and is meshed with the opening tip part, a plurality of similar coaxial spinning head structures are formed, and the shell spinning solution and the core spinning solution are stretched into filaments under the action of the electrostatic field to form core-shell structure fibers until the core-shell structure fibers are received on the receiving mechanism. The spinning efficiency and the yield can be improved while the continuity and the stability of spinning can be improved.
Description
Technical Field
The invention relates to an electrostatic spinning device capable of preparing core-shell structure nanofibers in batches, and belongs to the technical field of electrostatic spinning.
Background
To date, electrospinning is one of the most effective methods to stably produce nanofibers. The nanofiber obtained by electrostatic spinning has high specific surface area and high porosity and good biocompatibility, so the nanofiber has attracted extensive attention in the research of biomedical material domain in recent years, and particularly, the research of core-shell structure nanofiber prepared by using the coaxial electrostatic spinning technology in the field of drug sustained release draws the attention of scholars at home and abroad. However, coaxial electrostatic spinning equipment has high requirements on the spinning solution, a pinhole blockage phenomenon is easy to occur in the spinning process, the continuity and stability of the spinning process are influenced, the appearance quality of the nanofiber membrane is further influenced, and the yield of the fiber membrane is low.
Disclosure of Invention
The invention aims to provide an electrostatic spinning device capable of preparing core-shell structure nanofibers in batches, which can improve spinning efficiency and yield while improving spinning continuity and stability.
In order to achieve the purpose, the invention provides the following technical scheme: an electrostatic spinning device capable of preparing core-shell structure nanofibers in batches comprises a liquid storage tank for containing shell spinning solution, a first gear arranged in the liquid storage tank, a second gear arranged outside the liquid storage tank and in transmission connection with the first gear through a chain, a driving liquid supply mechanism for driving the second gear to rotate and simultaneously supply liquid to the second gear, a high-voltage power supply connected with the second gear, and a receiving mechanism arranged on one side of the second gear and grounded, wherein an electrostatic field is formed between the second gear and the receiving mechanism;
the second gear comprises a plurality of opening peak parts used for spraying the nuclear layer spinning solution, the peak parts are meshed with the chain, the chain is driven to pass through the liquid storage tank, so that the shell layer spinning solution is stored in the pitch of the chain, and when the pitch with the shell layer spinning solution moves to the opening peak parts and is meshed with the opening peak parts, the shell layer spinning solution and the nuclear layer spinning solution form jet flow under the action of an electrostatic field to form core-shell structure fibers until the core-shell structure fibers are received on the receiving mechanism.
Furthermore, the second gear further comprises a main body part which is arranged in a hollow mode, the plurality of the open pore tip parts are annularly arranged on the main body part, and the open pore tip parts are communicated with the main body part.
Further, the driving liquid supply mechanism comprises a spiral feeder communicated with the main body part and a driving motor butted with the spiral feeder, the spiral feeder comprises a spiral rod used for connecting the driving motor and the main body part, and a feeding piece sleeved on the periphery of the spiral rod and communicated with the main body part, and a gap is formed between the feeding piece and the spiral rod.
Further, the electrostatic spinning device also comprises a nuclear layer liquid supply mechanism used for conveying a nuclear layer spinning solution to the tip end, and the nuclear layer liquid supply mechanism is communicated with the feeding piece.
Further, the liquid storage tank is provided with an outlet used for enabling the chain to drive, the outlet is in a semi-closed state, and the liquid storage tank is obliquely arranged.
Further, the electrostatic spinning mechanism also comprises a shell layer liquid supply mechanism communicated with the liquid storage tank.
Furthermore, the receiving mechanism is a metal receiving plate, and the receiving plate is arc-shaped.
Furthermore, the circle center of the arc-shaped receiving plate coincides with the circle center of the second gear, and the radius of the arc-shaped receiving plate is larger than that of the second gear.
Further, the material of the second gear is conductive metal.
Further, the shell layer spinning solution is different from the core layer spinning solution.
The invention has the beneficial effects that: the second gear is driven by the driving liquid supply mechanism to rotate so as to drive the chain and the first gear to rotate, so that the chain and the first gear stir the shell spinning solution in the liquid storage tank, the shell spinning solution is prevented from solidifying, and meanwhile, part of the shell spinning solution is taken out; the second gear has the trompil cusp portion that is used for spraying nuclear layer spinning solution, after the chain transmission passes through the liquid storage tank, there is shell layer spinning solution in the pitch of chain, the pitch moves and meshes with the trompil cusp portion when moving to the trompil cusp portion, form similar coaxial spinning head structure, shell layer spinning solution and nuclear layer spinning solution are stretched into the silk simultaneously under the effect of electrostatic field, thereby form the efflux in order to form nuclear shell structure fibre, the continuity and the stability of spinning have been improved, simple structure and convenient and fast.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of an electrospinning apparatus capable of batch-producing core-shell structured nanofibers according to the present invention.
Fig. 2 is another schematic structural diagram of an electrospinning apparatus capable of batch-producing core-shell structured nanofibers according to the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, an electrostatic spinning apparatus capable of batch-producing core-shell nanofibers in a preferred embodiment of the present invention includes a liquid storage tank 1, a first gear 2 disposed in the liquid storage tank 1, a second gear 6 disposed outside the liquid storage tank 1, a chain 5 for connecting the first gear 2 and the second gear 6, and a driving liquid supply mechanism for driving the second gear 6 to rotate, wherein the driving liquid supply mechanism drives the second gear 6 to rotate and then drives the chain 5 to rotate, so as to drive the first gear 2 in the liquid storage tank 1 to rotate, and further stir a spinning solution in the liquid storage tank 1, so as to prevent the spinning solution from solidifying, and enable the chain 5 to carry a part of the spinning solution out of the liquid storage tank 1. In this embodiment, the spinning solution placed in the reservoir 1 is a shell spinning solution.
Wherein the reservoir 1 has an outlet for driving the chain 5, which outlet is semi-closed. The semi-closed outlet can prevent the organic solvent in the shell layer spinning solution from volatilizing too fast and can also block the interference of the nuclear layer spinning solution. Also, in the present embodiment, the reservoir 1 is disposed obliquely. The direction of the first gear 2 is used as the front, and the inclined direction of the liquid storage tank 1 is inclined from the front to the back from bottom to top so as to prevent the shell spinning solution in the liquid storage tank 1 from flowing out from the outlet and causing the waste of the shell spinning solution. Correspondingly, in order to improve the spinning efficiency, the electrostatic spinning mechanism further comprises a shell layer liquid supply mechanism 10 communicated with the liquid storage tank 1.
The electrostatic spinning device also comprises a high-voltage power supply 3 connected with the second gear 6 and a receiving mechanism 7 which is arranged on one side of the second gear 6 and is grounded, an electrostatic field is formed between the second gear 6 and the receiving mechanism 7, and the electrostatic field is used for enabling the spinning solution to be drawn into jet flow to be received on the receiving mechanism 7. Accordingly, the material of the second gear 6 is a conductive metal, and the conductive metal may be iron or the like, and is not particularly limited herein, depending on the actual situation. In the present embodiment, the receiving mechanism 7 is a metal receiving plate 7, and the metal receiving plate 7 has an arc shape. The purpose of arranging the receiving plate 7 in an arc shape is: and the shape of the second gear 6 is matched, so that the receiving distance from each similar coaxial spinning head structure to the metal receiving plate 7 is the same, and the mass of the finally formed nano-fiber is relatively kept at the same level. Specifically, the center of the arc-shaped receiving plate 7 coincides with the center of the second gear 6, and the radius of the arc-shaped receiving plate 7 is larger than that of the second gear 6.
Since the chain 5 meshes with the first gear 2 and the second gear 6, respectively, the chain 5 has a pitch. The chain 5 drives the liquid storage tank 1 to take out part of the shell spinning solution, so that the shell spinning solution is stored in the pitch. Correspondingly, the second gear 6 comprises a plurality of opening tips for spraying the core layer spinning solution, and the opening tips are engaged with the chain 5, the chain 5 is driven through the liquid storage tank 1 so that part of the core layer spinning solution is stored in the pitch of the chain 5, when the pitch with the core layer spinning solution moves to the opening tips and is engaged with the opening tips, a plurality of structures similar to coaxial spinnerets are formed, and the core layer spinning solution are drawn into jet flow under the action of the electrostatic field to form core-shell structure fibers until being received on the receiving mechanism 7.
The second gear 6 further comprises a main body portion which is arranged in a hollow mode, the plurality of open-hole tip portions are annularly arranged on the main body portion, and the open-hole tip portions are communicated with the main body portion. In this embodiment, a plurality of apertured tips are equally spaced around the circumference of the main body portion for better engagement with the chain 5. The driving liquid supply mechanism comprises a spiral feeder 8 communicated with the main body part and a driving motor 9 butted with the spiral feeder 8, and the driving motor 9 is started to enable the spiral feeder 8 to rotate so as to drive the second gear 6 to rotate. Wherein, screw feeder 8 includes the hob that is used for connecting driving motor and main part, and overlaps the feeding piece of establishing in hob periphery and with the main part intercommunication, has the clearance between feeding piece and the hob. The screw rod is rotatably connected with the main body part and the driving motor, so that the driving motor drives the screw rod to rotate so as to drive the main body part to rotate, and then the second gear 6 rotates. The feeding piece is kept immovable relative to the screw rod and is communicated with the main body part. Correspondingly, the electrostatic spinning device also comprises a nuclear layer liquid supply mechanism 4 used for conveying a nuclear layer spinning solution to the tip end, the nuclear layer liquid supply mechanism 4 is communicated with the spiral feeder 8, and particularly, the nuclear layer liquid supply mechanism 4 is communicated with the feeding piece. The core layer liquid supply mechanism 4 conveys the core layer spinning solution into the main body part through the feeding piece and the screw rod until the core layer spinning solution is full into the tip part. Notably, the shell layer spinning solution is different from the core layer spinning solution.
In summary, the following steps: the first gear 2, the second gear 6 and the chain 5 for connecting the first gear 2 and the second gear 6 are arranged, the second gear 6 is driven by the driving liquid supply mechanism to rotate so as to drive the chain 5 and the first gear 2 to rotate, so that the chain 5 and the first gear 2 stir the shell spinning solution in the liquid storage tank 1, the shell spinning solution is prevented from being solidified, and meanwhile, part of the shell spinning solution is brought out; second gear 6 has the trompil cusp that is used for spraying nuclear layer spinning solution, after 5 transmissions of chain pass through liquid storage tank 1, there is shell layer spinning solution in the pitch of chain 5, the pitch moves to the trompil cusp and when meshing with the trompil cusp, form the structure of a plurality of similar coaxial spinning heads, shell layer spinning solution and nuclear layer spinning solution are stretched into the silk simultaneously under the effect of electrostatic field, thereby form the efflux in order to form core-shell structure fibre, the efficiency and the output of spinning have been improved, simple structure and convenient and fast.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An electrostatic spinning device capable of preparing core-shell structure nanofibers in batches is characterized by comprising a liquid storage tank, a first gear, a second gear, a driving liquid supply mechanism, a high-voltage power supply and a receiving mechanism, wherein the liquid storage tank is used for containing shell layer spinning solution, the first gear is arranged in the liquid storage tank, the second gear is arranged outside the liquid storage tank and is in transmission connection with the first gear through a chain, the driving liquid supply mechanism is used for driving the second gear to rotate and simultaneously supplying liquid to the second gear, the high-voltage power supply is connected with the second gear, the receiving mechanism is arranged on one side of the second gear and is grounded, and an electrostatic field is formed between the second gear and the receiving mechanism;
the second gear comprises a plurality of opening peak parts used for spraying the nuclear layer spinning solution, the peak parts are meshed with the chain, the chain is driven to pass through the liquid storage tank, so that the shell layer spinning solution is stored in the pitch of the chain, and when the pitch with the shell layer spinning solution moves to the opening peak parts and is meshed with the opening peak parts, the shell layer spinning solution and the nuclear layer spinning solution form jet flow under the action of an electrostatic field to form core-shell structure fibers until the core-shell structure fibers are received on the receiving mechanism.
2. The electrospinning device of claim 1, wherein the second gear further comprises a main body portion disposed in a hollow manner, and a plurality of the open-hole tip portions are annularly disposed on the main body portion and are in communication with the main body portion.
3. The electrospinning apparatus of claim 2, wherein the liquid supply mechanism comprises a screw feeder in communication with the body, and a drive motor in communication with the screw feeder, wherein the screw feeder comprises a screw rod for connecting the drive motor to the body, and a feeding member disposed around the screw rod and in communication with the body, wherein a gap is formed between the feeding member and the screw rod.
4. The electrospinning apparatus of claim 3, further comprising a core layer supply mechanism for delivering a core layer spinning solution to the tip, the core layer supply mechanism in communication with the feed member.
5. The electrospinning apparatus of claim 1, wherein the reservoir has an outlet for allowing the chain drive to move, the outlet is semi-closed, and the reservoir is disposed at an incline.
6. The electrospinning apparatus of claim 1, wherein the electrospinning mechanism further comprises a sheath liquid supply mechanism in communication with the reservoir.
7. The electrospinning apparatus of claim 1, wherein the receiving mechanism is a metal receiving plate, the receiving plate being arcuate.
8. The electrospinning apparatus of claim 7, wherein the center of the arc-shaped receiving plate coincides with the center of the second gear, and the radius of the arc-shaped receiving plate is greater than the radius of the second gear.
9. The electrospinning apparatus of claim 1, wherein the material of the second gear is a conductive metal.
10. The electrospinning apparatus of claim 1, wherein the shell layer spinning solution is different from the core layer spinning solution.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110024377.0A CN112609249A (en) | 2021-01-08 | 2021-01-08 | Electrostatic spinning device capable of preparing core-shell structure nanofibers in batches |
| PCT/CN2021/074683 WO2022147869A1 (en) | 2021-01-08 | 2021-02-01 | Electrostatic spinning apparatus capable of in-batch preparation of nanofibers having core-shell structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110024377.0A CN112609249A (en) | 2021-01-08 | 2021-01-08 | Electrostatic spinning device capable of preparing core-shell structure nanofibers in batches |
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| Publication Number | Publication Date |
|---|---|
| CN112609249A true CN112609249A (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110024377.0A Pending CN112609249A (en) | 2021-01-08 | 2021-01-08 | Electrostatic spinning device capable of preparing core-shell structure nanofibers in batches |
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| Country | Link |
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| CN (1) | CN112609249A (en) |
| WO (1) | WO2022147869A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022205638A1 (en) * | 2021-03-29 | 2022-10-06 | 苏州大学 | Electrospinning device for producing nanofiber having core-shell structure |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050031073A (en) * | 2005-01-25 | 2005-04-01 | 정도성 | Electrospinning apparatus equipped with rotating pin-bundle spinneret |
| US7967588B2 (en) * | 2007-11-20 | 2011-06-28 | Clarcor Inc. | Fine fiber electro-spinning equipment, filter media systems and methods |
| KR101291592B1 (en) * | 2012-03-19 | 2013-08-01 | 주식회사 우리나노 | Electrospinning device comprising conical spinning tube with polygon hollow |
| CN103572388B (en) * | 2013-11-20 | 2016-11-16 | 东华大学 | A kind of needle-free coaxial electrostatic spinning silk device and spinning process |
| CN108034995B (en) * | 2018-01-12 | 2023-09-26 | 华南协同创新研究院 | Solid needle electrostatic spinning equipment |
| CN108532004B (en) * | 2018-04-23 | 2020-11-03 | 苏州大学 | Ferris wheel type bubble spinning device |
| CN110205686B (en) * | 2019-06-28 | 2021-07-02 | 北京英鸿光大科技有限公司 | Polymer injection mechanism for electrostatic spinning nanofiber |
| CN111394805A (en) * | 2020-03-09 | 2020-07-10 | 东华大学 | Sea urchin-shaped electrostatic spinning nozzle and spinning method thereof |
| CN111809253B (en) * | 2020-07-22 | 2023-02-24 | 江西师范大学 | Circulating spinning device and application thereof in preparation of uniform nanofiber diaphragms |
-
2021
- 2021-01-08 CN CN202110024377.0A patent/CN112609249A/en active Pending
- 2021-02-01 WO PCT/CN2021/074683 patent/WO2022147869A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022205638A1 (en) * | 2021-03-29 | 2022-10-06 | 苏州大学 | Electrospinning device for producing nanofiber having core-shell structure |
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| Publication number | Publication date |
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| WO2022147869A1 (en) | 2022-07-14 |
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