CN111349973A - Multi-force-field coupled electrostatic spinning structure, method and equipment - Google Patents
Multi-force-field coupled electrostatic spinning structure, method and equipment Download PDFInfo
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- CN111349973A CN111349973A CN201811574810.2A CN201811574810A CN111349973A CN 111349973 A CN111349973 A CN 111349973A CN 201811574810 A CN201811574810 A CN 201811574810A CN 111349973 A CN111349973 A CN 111349973A
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- electric field
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- 238000010041 electrostatic spinning Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims description 7
- 238000009987 spinning Methods 0.000 claims abstract description 95
- 230000005684 electric field Effects 0.000 claims abstract description 55
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 239000002121 nanofiber Substances 0.000 claims abstract description 20
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 239000007921 spray Substances 0.000 claims abstract description 4
- 238000001523 electrospinning Methods 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 abstract description 10
- 238000010168 coupling process Methods 0.000 abstract description 10
- 238000005859 coupling reaction Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
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
- 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
-
- 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
Abstract
The invention relates to a multi-force field coupling electrostatic spinning structure, which comprises a spinning head, an electric field generating mechanism and an air field generating mechanism; the spinning head is provided with a spinneret orifice and a first electrode body which enables the spinning solution to be positively charged; the electric field generating mechanism comprises a second electrode body with positive charges and a nanofiber receiving polar plate with negative charges, the second electrode body and the nanofiber receiving polar plate form an annular electric field along the filament outlet direction, and the annular electric field is distributed on the periphery of the filament outlet path; the gas field generating mechanism comprises a gas spraying head, and the gas spraying head sprays gas along the filament discharging direction and forms a gas field surrounding the periphery of the annular electric field; the annular electric field is additionally arranged on the periphery of a filament outlet path of the spinning head, the annular gas field is additionally arranged on the periphery of the annular electric field, the charge direction of the annular electric field and the airflow direction of the annular gas field are consistent with the spinning direction, and the annular electric field and the annular gas field are coupled to regulate the filament outlet radius, so that the filament outlet radius of single spinning is greatly reduced, the filament outlet speed is improved, and the spinning efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of electrostatic spinning, in particular to an electrostatic spinning structure, method and device with multiple force field coupling.
Background
Electrostatic spinning is a special fiber manufacturing process, polymer solution or melt is subjected to jet spinning in a strong electric field, liquid drops at a needle head are changed into a cone from a sphere under the action of the electric field, and fiber filaments are obtained by extending from the tip of the cone, so that polymer filaments with nanometer diameters can be produced;
the prior electrostatic spinning equipment is mainly used for spinning monofilaments due to the limitation of the yarn-discharging radius during spinning, and the efficiency is extremely low.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an electrostatic spinning structure with multiple force field coupling;
also provides a multi-force field coupling electrostatic spinning method and a multi-force field coupling electrostatic spinning device.
The technical scheme adopted by the invention for solving the technical problems is as follows:
constructing a multi-force field coupling electrostatic spinning structure, wherein the structure comprises a spinning head, an electric field generating mechanism and an air field generating mechanism;
the spinning head is provided with a spinneret orifice and a first electrode body which enables spinning solution to be positively charged;
the electric field generating mechanism comprises a second electrode body with positive charges and a nanofiber receiving polar plate with negative charges or grounding; the second electrode body and the nanofiber receiving polar plate form an annular electric field along the filament outlet direction, and the annular electric field is distributed on the periphery of a filament outlet path;
the gas field generating mechanism comprises a gas spraying head, and the gas spraying head sprays gas along the filament discharging direction and forms a gas field surrounding the periphery of the annular electric field.
The invention relates to a multi-force-field coupled electrostatic spinning structure, wherein a second electrode body comprises a plurality of positive electrodes which are annularly distributed on the periphery of a filament outlet path;
or the second electrode body is an annular electrode body, and the wire outlet path penetrates through an inner hole of the annular electrode body.
The invention relates to a multi-force-field coupled electrostatic spinning structure, wherein a second electrode body is arranged on a spinning head;
or the second electrode body is provided separately;
or the second electrode body is connected with the spinning head through a first connecting piece.
The invention relates to a multi-force-field-coupled electrostatic spinning structure, which further comprises a gas generator for supplying gas to the gas spraying head.
The multi-force-field-coupled electrostatic spinning structure comprises a spinning head, a plurality of air nozzles and a plurality of air outlets, wherein the air nozzles are arranged on the spinning head and are annularly distributed around a spinneret orifice;
or the air nozzle comprises an annular pipe, a plurality of air nozzles are arranged on the annular pipe, and the annular pipe is connected or not connected with the spinning head;
or, the air nozzle includes a plurality of air outlet nozzles, and is a plurality of air outlet nozzles are the annular and distribute in that it is peripheral just to go out the silk route air outlet nozzle pass through the second connecting piece with the spinning head is connected.
The invention relates to a multi-force-field coupled electrostatic spinning structure, which further comprises a spinning carrier plate for bearing spinning; the spinning carrier plate is grounded or connected with a negative electrode to form the nanofiber receiving polar plate, or the nanofiber receiving polar plate is arranged at the downstream of the spinning carrier plate.
The multi-force-field-coupled electrostatic spinning structure is characterized in that the number of the spinneret orifices is multiple, and the spinneret orifices are distributed annularly.
According to the multi-force field coupling electrostatic spinning structure, the implementation method comprises the following steps: an annular electric field is additionally arranged on the periphery of a filament outlet path of the spinning head, an annular gas field is additionally arranged on the periphery of the annular electric field, the charge direction of the annular electric field and the airflow direction of the annular gas field are consistent with the spinning direction, and the annular electric field and the annular gas field are coupled to regulate the filament outlet radius.
The electrostatic spinning equipment coupled with the multiple force fields is provided with the electrostatic spinning structure coupled with the multiple force fields.
The electrostatic spinning equipment coupled by multiple force fields is further provided with a first controller for controlling the first electrode body, a second controller for controlling the electric field generating mechanism and a third controller for controlling the gas field generating mechanism.
The invention has the beneficial effects that: the annular electric field is additionally arranged on the periphery of a filament outlet path of the spinning head, the annular gas field is additionally arranged on the periphery of the annular electric field, the charge direction of the annular electric field and the airflow direction of the annular gas field are consistent with the spinning direction, and the annular electric field and the annular gas field are coupled to regulate the filament outlet radius, so that the filament outlet radius of single spinning is greatly reduced, the filament outlet speed is improved, multiple spinning is facilitated, and the spinning efficiency is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only part of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the accompanying drawings:
FIG. 1 is a structural diagram of a multi-force field coupled electrospinning structure according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a multi-force field coupled electrospinning arrangement spinneret configuration according to a preferred embodiment of the present invention;
fig. 3 is a schematic view of an alternative second electrode body structure according to the invention;
FIG. 4 is a schematic view of an alternative second electrode body and showerhead assembly of the present invention;
FIG. 5 is a schematic view of an alternative showerhead configuration of the present invention;
FIG. 6 is a schematic block diagram of a multi-force field coupled electrospinning apparatus according to a preferred embodiment of the present invention;
FIG. 7 is a spinning effect diagram of a conventional spinning structure;
FIG. 8 is a spinning effect diagram of a conventional spinning structure;
FIG. 9 is a spinning effect diagram of a spinning structure applying the invention;
FIG. 10 is a view showing the spinning effect of the spinning structure according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.
The multi-force field coupled electrostatic spinning structure of the preferred embodiment of the present invention, as shown in fig. 1, and referring to fig. 2, includes a spinning head 1, an electric field generating mechanism and an air field generating mechanism;
the spinning head 1 is provided with a spinneret orifice 10 and a first electrode body which enables spinning solution to be positively charged;
the electric field generating mechanism comprises a second electrode body 20 with positive charge and a nanofiber receiving polar plate 21 with negative charge or grounding; the second electrode body 20 and the nanofiber receiving polar plate 21 form an annular electric field along the filament outlet direction, and the annular electric field is distributed at the periphery of the filament outlet path;
the gas field generating mechanism comprises a gas nozzle 30, and the gas nozzle 30 sprays gas along the filament discharging direction and forms a gas field surrounding the periphery of the annular electric field;
the annular electric field is additionally arranged on the periphery of a filament outlet path of the spinning head, the annular gas field is additionally arranged on the periphery of the annular electric field, the charge direction of the annular electric field and the airflow direction of the annular gas field are consistent with the spinning direction, and the annular electric field and the annular gas field are coupled to regulate the filament outlet radius, so that the filament outlet radius of single spinning is greatly reduced, the filament outlet speed is improved, multiple spinning is facilitated, and the spinning efficiency is greatly improved.
As shown in fig. 1 and 2, the second electrode body 20 includes a plurality of positive electrodes 200, the plurality of positive electrodes 200 being annularly distributed on the periphery of the wire discharge path; the distribution uniformity of the annular electric field is ensured, and the stability of the wire outlet is further ensured;
note that, as shown in fig. 3, the second electrode body 20 is also an annular electrode body, and the wire outgoing path passes through an inner hole of the annular electrode body.
As shown in fig. 1 and 2, the second electrode body 20 is arranged on the spinning head 1, so that the structure is simplified, and the second electrode body can be easily arranged on a fixed spinning head or a handheld spinning head;
note that the second electrode body 20 may be provided separately for maintenance;
or the second electrode body 20 shown in fig. 4 is connected with the spinning head 1 through the first connecting piece 4, so that the disassembly and the assembly are convenient.
As shown in fig. 2, the electrospinning structure further includes a gas generator (not shown) for supplying gas to the gas nozzle 30, and preferably, the gas generator employs a gas pump; low cost and easy control of gas field.
As shown in fig. 1 and 2, the air nozzle 30 includes a plurality of air nozzles 300 provided on the spinning head 1, the plurality of air nozzles 300 being annularly distributed around the spinneret orifice; the structure is simplified, and the spinning device is easy to be arranged on a fixed spinning head or a handheld spinning head;
alternatively, as shown in fig. 5, the air nozzle 30 includes an annular tube 301, a plurality of air nozzles 302 are provided on the annular tube 301, and the annular tube 301 is connected or not connected to the spinning head 1; the annular pipe 301 is also provided with an air inlet; the structure is simple, and the air supply is convenient;
alternatively, as shown in fig. 4, the air nozzle 30 includes a plurality of air outlet nozzles 303, the plurality of air outlet nozzles 303 are annularly distributed on the periphery of the yarn outlet path, and the air outlet nozzles 303 are connected with the spinning head through the second connecting piece 5; the assembly and maintenance are convenient, and the improvement is carried out on the existing spinning head.
As shown in fig. 1, the electrospinning structure further includes a spinning carrier plate 21 for carrying the spun yarn; the spinning carrier plate 21 is grounded or connected with a negative electrode to form a nanofiber receiving polar plate 21;
alternatively, the nanofiber receiving plate may be arranged downstream of the spinning carrier.
As shown in fig. 1 and 2, the plurality of spinneret holes 10 are distributed in a ring shape; the annular electric field and the annular gas field are conveniently matched, the interference between adjacent spinning is small, and the spinning quality is improved.
According to the multi-force field coupling electrostatic spinning structure, the implementation method comprises the following steps: the annular electric field is additionally arranged on the periphery of a filament outlet path of the spinning head, the annular gas field is additionally arranged on the periphery of the annular electric field, the charge direction of the annular electric field and the airflow direction of the annular gas field are consistent with the spinning direction, and the annular electric field and the annular gas field are coupled to regulate the filament outlet radius, so that the filament outlet radius of single spinning is greatly reduced, the filament outlet speed is improved, multiple spinning is facilitated, and the spinning efficiency is greatly improved.
According to the multi-force-field coupled electrostatic spinning device, as shown in fig. 6, a multi-force-field coupled electrostatic spinning structure 7 is arranged on the multi-force-field coupled electrostatic spinning device 6; the spinning head on the electrostatic spinning equipment can be fixed, and can also be handheld and movable; the annular electric field is additionally arranged on the periphery of a filament outlet path of the spinning head, the annular gas field is additionally arranged on the periphery of the annular electric field, the charge direction of the annular electric field and the airflow direction of the annular gas field are consistent with the spinning direction, and the annular electric field and the annular gas field are coupled to regulate the filament outlet radius, so that the filament outlet radius of single spinning is greatly reduced, the filament outlet speed is improved, multiple spinning is facilitated, and the spinning efficiency is greatly improved.
As shown in fig. 6, the electrospinning device 6 with multiple force field coupling is further provided with a first controller 60 for controlling the first electrode body 70, a second controller 61 for controlling the electric field generating mechanism 2, and a third controller 62 for controlling the gas field generating mechanism 3; the operation and control are convenient;
preferably, the multi-force field coupled electrospinning device 6 is further provided with a fourth controller 63 for controlling the spinneret 1.
The experimental data of the specific implementation effect show that:
the concentration of the PAN spinning solution is 10 percent, and the spinning time is 10 min;
the non-woven fabric framework which receives the micron-sized base material is clearly visible under the condition of applying the existing spinning nozzle structure with the non-coupled field structure:
FIG. 7 is a SEM picture of a spun nanofiber with a resolution of 500um when using a conventional spinning structure;
FIG. 8 is a SEM picture of spun nanofibers with a resolution of 100um when using a prior art spinning structure;
and adopt the spinning shower nozzle structure of this application, under this condition, the non-woven fabrics skeleton of nanofiber's receipt substrate micron order is vague, and the nanofiber thickness that obtains than above traditional (non-coupling field structure) shower nozzle spinning is thicker, and spinning efficiency is higher:
FIG. 9 is a SEM picture of a spun nanofiber with a resolution of 500um when using a conventional spinning structure;
FIG. 10 is a SEM image of a spun nanofiber with a resolution of 100um when using a conventional spinning structure;
it will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. A multi-force field coupled electrostatic spinning structure is characterized by comprising a spinning head, an electric field generating mechanism and an air field generating mechanism;
the spinning head is provided with a spinneret orifice and a first electrode body which enables spinning solution to be positively charged;
the electric field generating mechanism comprises a second electrode body with positive charges and a nanofiber receiving polar plate with negative charges or grounding; the second electrode body and the nanofiber receiving polar plate form an annular electric field along the filament outlet direction, and the annular electric field is distributed on the periphery of a filament outlet path;
the gas field generating mechanism comprises a gas spraying head, and the gas spraying head sprays gas along the filament discharging direction and forms a gas field surrounding the periphery of the annular electric field.
2. The multi-force-field-coupled electrospinning structure of claim 1, wherein the second electrode body comprises a plurality of positive electrodes annularly distributed around the filament exit path;
or the second electrode body is an annular electrode body, and the wire outlet path penetrates through an inner hole of the annular electrode body.
3. The multi-force-field-coupled electrospinning structure of claim 1 or 2, wherein the second electrode body is disposed on the spinning head;
or the second electrode body is provided separately;
or the second electrode body is connected with the spinning head through a first connecting piece.
4. The multi-force field coupled electrospinning structure of claim 1, further comprising a gas generator that supplies gas to the gas jets.
5. The multi-force-field-coupled electrospinning structure of claim 4, wherein the air jets comprise a plurality of air jets disposed on the spinneret, the plurality of air jets being annularly distributed around the orifice;
or the air nozzle comprises an annular pipe, a plurality of air nozzles are arranged on the annular pipe, and the annular pipe is connected or not connected with the spinning head;
or, the air nozzle includes a plurality of air outlet nozzles, and is a plurality of air outlet nozzles are the annular and distribute in that it is peripheral just to go out the silk route air outlet nozzle pass through the second connecting piece with the spinning head is connected.
6. The multi-force-field-coupled electrospun structure of claim 1 further comprising a spinning carrier plate carrying the spun filaments; the spinning carrier plate is grounded or connected with a negative electrode to form the nanofiber receiving polar plate, or the nanofiber receiving polar plate is arranged at the downstream of the spinning carrier plate.
7. The multi-force field-coupled electrospinning structure of claim 1, wherein the spinneret holes are multiple and the spinneret holes are distributed in a ring shape.
8. A multi-force field coupled electrospinning method, the multi-force field coupled electrospinning structure of any of claims 1 to 7, comprising: an annular electric field is additionally arranged on the periphery of a filament outlet path of the spinning head, an annular gas field is additionally arranged on the periphery of the annular electric field, the charge direction of the annular electric field and the airflow direction of the annular gas field are consistent with the spinning direction, and the annular electric field and the annular gas field are coupled to regulate the filament outlet radius.
9. A multi-force field coupled electrospinning device, the multi-force field coupled electrospinning structure according to any one of claims 1 to 7, wherein the multi-force field coupled electrospinning device is provided with the multi-force field coupled electrospinning structure.
10. The multi-force-field-coupled electrospinning apparatus of claim 9, further comprising a first controller that controls the first electrode body, a second controller that controls the electric field generating mechanism, and a third controller that controls the gas field generating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574810.2A CN111349973A (en) | 2018-12-21 | 2018-12-21 | Multi-force-field coupled electrostatic spinning structure, method and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574810.2A CN111349973A (en) | 2018-12-21 | 2018-12-21 | Multi-force-field coupled electrostatic spinning structure, method and equipment |
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| Publication Number | Publication Date |
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| CN111349973A true CN111349973A (en) | 2020-06-30 |
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| CN201811574810.2A Pending CN111349973A (en) | 2018-12-21 | 2018-12-21 | Multi-force-field coupled electrostatic spinning structure, method and equipment |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104862788A (en) * | 2015-05-27 | 2015-08-26 | 西安工程大学 | Air jet assisting multi-needle electrostatic spinning device and method for preparing nanofiber net through air jet assisting multi-needle electrostatic spinning device |
| CN105624808A (en) * | 2016-04-06 | 2016-06-01 | 佛山轻子精密测控技术有限公司 | Annular flake-shaped electrode electrostatic spinning device |
| JP2018193658A (en) * | 2017-05-22 | 2018-12-06 | 花王株式会社 | Electrospinning apparatus |
| CN209456617U (en) * | 2018-12-21 | 2019-10-01 | 深圳市宜中科技有限公司 | A kind of the electrostatic spinning structure and equipment of multiple field of force coupling |
-
2018
- 2018-12-21 CN CN201811574810.2A patent/CN111349973A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104862788A (en) * | 2015-05-27 | 2015-08-26 | 西安工程大学 | Air jet assisting multi-needle electrostatic spinning device and method for preparing nanofiber net through air jet assisting multi-needle electrostatic spinning device |
| CN105624808A (en) * | 2016-04-06 | 2016-06-01 | 佛山轻子精密测控技术有限公司 | Annular flake-shaped electrode electrostatic spinning device |
| JP2018193658A (en) * | 2017-05-22 | 2018-12-06 | 花王株式会社 | Electrospinning apparatus |
| CN209456617U (en) * | 2018-12-21 | 2019-10-01 | 深圳市宜中科技有限公司 | A kind of the electrostatic spinning structure and equipment of multiple field of force coupling |
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