CN110344125A - A kind of batch electric spinning equipment and its method for preparing nano fibrous membrane - Google Patents
A kind of batch electric spinning equipment and its method for preparing nano fibrous membrane Download PDFInfo
- Publication number
- CN110344125A CN110344125A CN201910719966.3A CN201910719966A CN110344125A CN 110344125 A CN110344125 A CN 110344125A CN 201910719966 A CN201910719966 A CN 201910719966A CN 110344125 A CN110344125 A CN 110344125A
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- Prior art keywords
- spray head
- spinning
- solution tank
- solution
- rotary needle
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- 238000009987 spinning Methods 0.000 title claims abstract description 64
- 239000012528 membrane Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title abstract description 9
- 239000007921 spray Substances 0.000 claims abstract description 51
- 239000000835 fiber Substances 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 230000005684 electric field Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 230000000903 blocking effect Effects 0.000 abstract description 6
- 238000005147 X-ray Weissenberg Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000001523 electrospinning Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000010041 electrostatic spinning Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000002121 nanofiber Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000001467 acupuncture Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 polyoxyethylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
-
- 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
Abstract
The invention discloses a kind of batch electric spinning equipment and its methods for preparing nano fibrous membrane, including solution tank, spray head, metering pump, liquid reserve tank, drive system, fiber depositor, three-dimensional movement platform and high voltage power supply；The spray head is set in solution tank, which includes rotary needle and several annular current limliting circles；The annular current limliting circle is co-axially mounted with rotary needle, and annular current limliting circle is axially placed equidistant with along rotary needle；The lower end of the rotary needle is stretched out outside solution tank, and is connect with drive system；The solution tank is successively connected to metering pump and liquid reserve tank；The fiber depositor is set to the top of spray head, changes position of the fiber depositor in working range by three-dimensional movement platform；The high voltage power supply and fiber depositor are electrically connected, the solution tank, spinning solution and spray head ground connection.The present invention carries out feed flow to spray head using Weissenberg effect and capillary phenomenon, solves the problems such as fiber manufacture low output, spray head are easy blocking in the prior art.
Description
Technical field
The invention belongs to electrostatic spinning technique fields, and in particular to a kind of batch electric spinning equipment and its prepare nano fibrous membrane
Method.
Background technique
The one kind of electrostatic spinning technique as nanofiber manufacturing technology, because its is technically simple, can woven material multiplicity etc. it is excellent
Point is used widely.Electrostatic spinning apparatus mainly includes high voltage power supply, spray head and collection device etc., and high voltage power supply makes spray head
High voltage electric field is generated between collection device, collection charge is assembled on the surface of the drop of nozzle mouth suspension at this time, and drop gradually forms Taylor
It bores and is sprayed to collection device, with processes such as jet stream whip is dynamic, stretching, splittings, collection is finally deposited on form of nanofibers
Device.
Conventional electrostatic spining technology generates single jet stream in electro-hydraulic coupling process using single needle point as spinning head,
Yield is undesirable；In addition, spinning syringe needle is easy blocking when spinning fluid viscosity is larger, electrospinning is caused to interrupt.Therefore, single needle electricity
The yield of spinning is usually 0.02g/h, is unable to satisfy the output demand of batch electro spinning nanometer fiber membrane.In this regard, electrospinning area research
Member studies batch electric spinning equipment.
Elmarco company carries out feed flow to spinning solution using column shaped rotating electrode, and spinning yield is effectively promoted,
And world patent (WO2005024101) is applied for.In addition, bubble batch electrospinning, drum electrode batch electrospinning, line electrode batch
The technologies such as electrospinning can preferably solve the problems, such as that traditional spinneret is easy blocking, is difficult to clean, and form the ultra-fine jet stream of multiply, from
And improve spinning efficiency.
Summary of the invention
Goal of the invention: present invention aims in view of the deficiencies of the prior art, provide a kind of spinneret to be not easy blocking, easily
In cleaning, be capable of forming the ultra-fine jet stream of multiply, improve the batch electric spinning equipment of spinning efficiency and its prepare the side of nano fibrous membrane
Method.
Technical solution: the purpose of the invention is achieved by the following technical solution:
The present invention provides a kind of batch electric spinning equipment, including solution tank, spray head, metering pump, liquid reserve tank, drive system,
Fiber depositor, three-dimensional movement platform and high voltage power supply；
The spray head is set in solution tank, which includes rotary needle and several annular current limliting circles；The annular limit
Stream circle is coaxially disposed with rotary needle, and annular current limliting circle is axially placed equidistant with along rotary needle；The lower end of the rotary needle is stretched out molten
Outside liquid bath, and it is connect with drive system；The solution tank is successively connected to metering pump and liquid reserve tank；The fiber depositor setting
In the top of spray head, position of the fiber depositor in working range is changed by three-dimensional movement platform；The high voltage power supply with
Fiber depositor is electrically connected, the solution tank, spinning solution and spray head ground connection.
The drive system is set to below solution tank, including rotating electric machine, shaft coupling and electric machine controller；The rotation
The output shaft of motor is sequentially connected by shaft coupling and spray head, and the spray head is driven by drive system, around own axis；Rotation
Rotating motor and electric machine controller are electrically connected.
At least one spray head is provided in the solution tank, and the spray head is evenly distributed in solution tank.
The outer surface diameter of the rotary needle is 1 μm~1mm, and length is 50 μm~1cm.
The internal diameter of the annular current limliting circle is 100 μm~2mm, and width is 300 μm~5mm, and section is rectangle.
Spacing at the top of the fiber depositor and spray head is 5mm~100cm.
The present invention also provides the above-mentioned batch electric spinning equipments of use to prepare the preparation method of nano fibrous membrane, including walks as follows
It is rapid:
1) prepared spinning solution is stored in liquid reserve tank；
2) liquid supply speed for setting metering pump, is pumped into solution tank for spinning solution；
3) revolving speed for setting rotating electric machine, drives rotary needle around own axes rotation, so that spinning solution rises to spray head top
Portion；
4) output voltage of high voltage power supply is set, shape under the action of shearing force and high voltage electric field of the spinning solution at the top of spray head
It is sprayed at taylor cone and with pattern to fiber depositor, fiber depositor is finally deposited in the form of nano fibrous membrane
On；
5) by setting three-dimensional movement platform, the nano fibrous membrane that preparation finishes is transported out spinning fields in time.
Preferably, the metering pump is 10 μ l/hr~100ml/hr for flow quantity.
Preferably, the range of speeds of the rotating electric machine is 1~8000RPM.
Preferably, the output voltage range of the high voltage power supply is 1~70kV.
The utility model has the advantages that
(1) batch electric spinning equipment of the invention is equipped with rotary needle, and when rotary needle rotates, spinning solution can be spontaneous along rotary needle
Axially to feed flow at the top of spray head, solution consumption rate and spinning speed Auto-matching, the uniformity of fiber is improved；
(2) batch electric spinning equipment of the invention is equipped with multiple annular current limliting circles, carries out to the sample path length of rotary needle periphery
Control；Meanwhile solution also occurs that capillary phenomenon in the gap conveying of rotary needle and annular current limliting circle, is conducive to solution and transports；
(3) multiple annular current limliting circles of batch electric spinning equipment of the present invention are arranged along rotary needle axial direction uniform array, adjacent
There is certain interval between annular current limliting circle, to reduce the contact area of solution and annular current limliting circle, avoid to a certain extent
The problem of spray head blocking；
(4) when rotary needle is spinned by rotating electric machine drive, it is existing that Wei Senbao can occur for the spinning solution near rotary needle
As；Batch electric spinning equipment of the present invention carries out feed flow to spray head using Weissenberg effect and capillary phenomenon, solves in the prior art
The problems such as fiber manufactures low output, spray head is easy blocking.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of batch electric spinning equipment of the present invention.
In figure: 1- rotating electric machine, 2- solution tank, 3- liquid reserve tank, 4- spray head, 41- rotary needle, 42- annular current limliting circle, 5-
Metering pump, 6- high voltage power supply, 7- taylor cone, 8- three-dimensional movement platform, 9- fiber depositor, 10- electric machine controller, 11- are penetrated
Stream, 12- shaft coupling, 13- spinning solution.
Specific embodiment
Technical solution of the present invention is described in detail below by specific embodiments and the drawings, but protection of the invention
Range is not limited to the embodiment.
Embodiment 1:
A kind of batch electric spinning equipment as shown in Figure 1:, including solution tank 2, spray head 4, metering pump 5, liquid reserve tank 3, driving system
System, fiber depositor 9, three-dimensional movement platform 8 and high voltage power supply 6.
Spray head 4 is arranged in solution tank 2, and spray head 4 is made of the annular current limliting circle 42 of rotary needle 41 and 4；Annular current limliting circle
42 are co-axially mounted with rotary needle 41, and annular current limliting circle 42 is axially placed equidistant with along rotary needle 41, and the lower end of rotary needle 41 is stretched out
Outside solution tank 2, and it is connect with drive system；Rotary needle 41 spins the range of speeds as 1~8000RPM.Wherein rotary needle 41, can be with
For Medical acupuncture needle, tungsten tipped probe etc., outer surface diameter range is 1 μm~1mm, and length range is 50 μm~1cm；Annular current limliting circle
42 inside diameter ranges are 100 μm~2mm, and width range is 300 μm~5mm, and section is rectangle.
Drive system is set to 2 lower section of solution tank, is made of rotating electric machine 1, shaft coupling 12 and electric machine controller 10；Rotation
The output shaft of motor 1 is sequentially connected by shaft coupling 12 and spray head 4, and spray head 4 is driven by drive system, can be smoothly around itself
Axis rotation；Rotating electric machine 1 and electric machine controller 10 are electrically connected, and can control electric rotating by setting electric machine controller 10
The output revolving speed of machine 1, to control the speed of 4 rotation of spray head.
Metering pump 5 is set between solution tank 2 and liquid reserve tank 3, and solution tank 2 is connected to metering pump 5 and liquid reserve tank 3, control
Spinning solution 13 in liquid reserve tank 3 can be pumped into solution tank 2, make in solution tank 2 to the liquid supply speed of solution tank 2 by metering pump 5
The solution height of spinning solution 13 meets spinning requirement；Metering pump 5 is 10 μ l/hr~100ml/hr for flow quantity.
Fiber depositor 9 is set to the top of spray head 4, can change fiber depositor 9 by three-dimensional movement platform 8 in work
Make the position in range, to change spinning spacing, also the nano fibrous membrane of formation can be transferred out fiber deposition region；It is high
Voltage source 6 and fiber depositor 9 are electrically connected, and solution tank 2, spinning solution 13 and spray head 4 are grounded, can by the way of solution ground
Electrical interference to avoid high voltage electric field to rotating electric machine 1 and interlock circuit；Wherein fiber depositor 9 be collecting board or roller or
All kinds of collection devices in the spining technologies such as parallel pole or electrode network field, with the spacing range of spray head 4 be 5mm~
100cm；High voltage power supply 6, voltage output range are 1~70kV.
Embodiment 2:
Based on the device of embodiment 1, the present embodiment about nano fibrous membrane the preparation method is as follows:
Each component is assembled by Fig. 1, wherein 41 outer diameter of rotary needle is 200 μm, and 41 length of rotary needle is 50cm, annular current limliting circle
42 internal diameters are 800 μm, and width is 100 μm, and 42 spacing of adjacent annular current limliting circle is 500 μm, the pole of fiber depositor 9 and spray head 4
Spacing is 15cm；
1) by prepared spinning solution 13, (12% polyoxyethylene PEO solution, solvent are alcohol, distilled water, alcohol and distillation
The volume ratio 1:1 of water) deposit liquid reserve tank 3；
2) liquid supply speed of metering pump 5 is set as 800 μ l/hr, and spinning solution 13 is pumped into solution tank 2；
3) it sets the revolving speed of rotating electric machine 1 as 4900RPM, drives rotary needle 41 around own axes rotation, at this time spinning solution
13 can rise to 4 top of spray head；
4) voltage of the output of high voltage power supply 6 is set as 46kV, and the spinning solution 13 at 4 top of spray head is in shearing force and high-voltage electricity
Taylor cone 7 is formed under the action of and is sprayed with pattern to fiber depositor 9, is finally deposited in the form of nano fibrous membrane
On fiber depositor 9；
5) by setting three-dimensional movement platform 8, the nano fibrous membrane that preparation finishes is transported out spinning fields in time.
Further remark additionally the present embodiment, determines the structure and size and assembly of rotary needle 41 and annular current limliting circle 42
Relationship, with the proviso that, it first has to guarantee that Weissenberg effect and capillary effect can occur between these for spinning solution 13.
Further remark additionally the present embodiment, and metering pump 5 and liquid reserve tank 3 is arranged, and mainly carries out continuing confession to solution tank 2
Liquid guarantees that the speed for being pumped into spinning solution 13 is equal with the speed for spraying consumed spinning solution 13, guarantees the spinning solution in solution tank 2
13 liquid levels are constant, it is ensured that the stability of Weissenberg effect and capillary phenomenon.
Technical solution provided by the invention, key technology are spray head 4, and the spray head 4 of the present embodiment is by 41 He of rotary needle
4 annular current limliting circles 42 form, and innovative point mainly has a following two o'clock: first, it is sent out when rotary needle 41 is driven by rotating electric machine 1
When being born from rotation, Wei Senbao phenomenon can occur for the spinning solution 13 near rotary needle 41；Second, it is equipped with 4 annular current limliting circles 42, spinning
Liquid 13 there is also capillary phenomenon at 41 outer surface of rotary needle and annular 42 inner surface conveying of current limliting circle.Spinning is in spray head 4
There is Weissenberg effect and capillary effect simultaneously, therefore the spinning solution 13 in solution tank 2 is stablized, is persistently delivered to 4 point of spray head
End, electro-hydraulic coupling is occurred under the action of electric field, is finally deposited in the form of nano fibrous membrane on fiber depositor 9.
As described above, must not be explained although the present invention has been indicated and described referring to specific preferred embodiment
For the limitation to invention itself.It without prejudice to the spirit and scope of the invention as defined in the appended claims, can be right
Various changes can be made in the form and details for it.
Claims (10)
1. a kind of batch electric spinning equipment, it is characterised in that: including solution tank, spray head, metering pump, liquid reserve tank, drive system, fiber
Depositor, three-dimensional movement platform and high voltage power supply；
The spray head is set in solution tank, which includes rotary needle and several annular current limliting circles；The annular current limliting circle
It is coaxially disposed with rotary needle, and annular current limliting circle is axially placed equidistant with along rotary needle；Solution tank is stretched out in the lower end of the rotary needle
Outside, and with drive system it connect；The solution tank is successively connected to metering pump and liquid reserve tank；The fiber depositor is set to spray
The top of head changes position of the fiber depositor in working range by three-dimensional movement platform；The high voltage power supply and fiber
Depositor is electrically connected, the solution tank, spinning solution and spray head ground connection.
2. a kind of batch electric spinning equipment according to claim 1, it is characterised in that: the drive system is set to solution tank
Lower section, including rotating electric machine, shaft coupling and electric machine controller；The output shaft of the rotating electric machine is driven by shaft coupling and spray head
Connection, the spray head is driven by drive system, around own axis；Rotating electric machine and electric machine controller are electrically connected.
3. a kind of batch electric spinning equipment according to claim 1, it is characterised in that: be provided at least one in the solution tank
A spray head, and the spray head is evenly distributed in solution tank.
4. a kind of batch electric spinning equipment according to claim 1, it is characterised in that: the outer surface diameter of the rotary needle is
1 μm~1mm, length is 50 μm~1cm.
5. a kind of batch electric spinning equipment according to claim 1, it is characterised in that: the internal diameter of the annular current limliting circle is
100 μm~2mm, width is 300 μm~5mm, and section is rectangle.
6. a kind of batch electric spinning equipment according to claim 1, it is characterised in that: between the fiber depositor and spray head
Away from for 5mm~100cm.
7. a kind of preparation method that nano fibrous membrane is prepared using the described in any item batch electric spinning equipments of claim 1~6,
It is characterized in that: including the following steps:
1) prepared spinning solution is stored in liquid reserve tank；
2) liquid supply speed for setting metering pump, is pumped into solution tank for spinning solution；
3) revolving speed for setting rotating electric machine drives rotary needle around own axes rotation, so that spinning solution rises at the top of spray head；
4) output voltage of high voltage power supply is set, the spinning solution at the top of spray head forms Thailand under the action of shearing force and high voltage electric field
It strangles cone and is sprayed with pattern to fiber depositor, is finally deposited in the form of nano fibrous membrane on fiber depositor；
5) by setting three-dimensional movement platform, the nano fibrous membrane that preparation finishes is transported out spinning fields in time.
8. preparation method according to claim 7, it is characterised in that: the metering pump for flow quantity be 10 μ l/hr~
100ml/hr。
9. preparation method according to claim 7, it is characterised in that: the revolving speed of the rotating electric machine is 1~8000RPM.
10. preparation method according to claim 7, it is characterised in that: the output voltage of the high voltage power supply is 1~70kV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910719966.3A CN110344125B (en) | 2019-08-06 | 2019-08-06 | Batch electrospinning device and method for preparing nanofiber membranes by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910719966.3A CN110344125B (en) | 2019-08-06 | 2019-08-06 | Batch electrospinning device and method for preparing nanofiber membranes by same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110344125A true CN110344125A (en) | 2019-10-18 |
| CN110344125B CN110344125B (en) | 2024-02-02 |
Family
ID=68184015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910719966.3A Active CN110344125B (en) | 2019-08-06 | 2019-08-06 | Batch electrospinning device and method for preparing nanofiber membranes by same |
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| Country | Link |
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| CN (1) | CN110344125B (en) |
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| CN111364108A (en) * | 2020-03-24 | 2020-07-03 | 陕西工业职业技术学院 | Electrostatic spinning injection system |
| CN111394806A (en) * | 2020-04-20 | 2020-07-10 | 南京工业职业技术学院 | Three-dimensional fiber membrane preparation device and preparation method |
| CN115262004A (en) * | 2022-08-03 | 2022-11-01 | 江南大学 | Free liquid level multi-jet electrostatic spinning device and method for producing nano fibers |
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| CN115262004A (en) * | 2022-08-03 | 2022-11-01 | 江南大学 | Free liquid level multi-jet electrostatic spinning device and method for producing nano fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110344125B (en) | 2024-02-02 |
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