CN106119995B - A kind of solid syringe needle electrostatic spinning apparatus - Google Patents
A kind of solid syringe needle electrostatic spinning apparatus Download PDFInfo
- Publication number
- CN106119995B CN106119995B CN201610804952.8A CN201610804952A CN106119995B CN 106119995 B CN106119995 B CN 106119995B CN 201610804952 A CN201610804952 A CN 201610804952A CN 106119995 B CN106119995 B CN 106119995B
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- Prior art keywords
- syringe needle
- solid
- needle
- drain rod
- spinning
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Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The present invention relates to a kind of solid syringe needle electrostatic spinning apparatus, belong to nanofiber preparation field.Including liquid-supplying system, solid syringe needle spinneret system, jacking system, electric power system, reception device and control system.The solid syringe needle electrostatic spinning apparatus wraps up solid syringe needle using the drain rod that insulate, hence it is evident that reduces the electrostatic repulsion between syringe needle；The drain rod that insulate is in close contact with spinning head liquid storage box bottom circular cone countersunk head through hole, up moved under the driving of jacking system, become larger with the gap of circular cone counter sink portion, so as to have drop along the circular cone outflow of insulation drain rod bottom, excited at solid needle tip by electric field and produce taylor cone, since insulation drain rod can move up and down, capillary needle type static spinning clogging can be effectively solved；Each solid syringe needle is set to be in suitable distance, it can be achieved that field strength is uniform at each solid needle tip, so as to reach the effect of uniform spinning with receiving electrode by adjusting the height of insulation drain rod.
Description
Technical field
The present invention relates to a kind of electrostatic spinning apparatus, particularly a kind of solid syringe needle electrostatic spinning apparatus, belong to Nanowire
Tie up preparation field.
Background technology
Nanofiber refers to fiber of the diameter in below 100nm in the narrow sense, has the spies such as specific surface area is big, porosity is high
Point, is widely used in high efficiency filter material, wound dressing, organizational project, composite material, battery electrode and micro-nano device etc.
Field.
Electrostatic spinning is to prepare nanometer by the electric field force strained polymer solution or melt of high-voltage DC power supply generation
The method of fiber, is to prepare one of most effective technology of nanofiber at present.Electrostatic spinning includes solution electrostatic spinning and melting
Two major class of electrostatic spinning, wherein solution electrostatic spinning are simply rapidly developed due to its equipment and technique.
Solution electrostatic spinning apparatus mainly includes high voltage power supply generator, spinning head, liquid-supplying system and fiber reception device
Four parts.Solution electrostatic spinning apparatus can realize spinning, such as patent using single metal capillary needle tubing as spinning head
200420020596.3, the technology disclosed in 200410025622.6 etc..But due to traditional single metal capillary needle tubing electrostatic
Yarn spinning productivity is relatively low, can not meet industrialization demand, becomes the bottleneck problem for restricting its development.
Multiple metal kernel small needle tubes are formed Multi needle electrostatic by Theron etc. in the way of arranged in a straight line or rectangular arranged
Device for spinning [S.A.THERON, A.L.YARIN, E.ZUSSMAN, E.KROLL.Multiple jets in
electrospinning：Experiment and modeling.Polymer, 2005,46 (9)：2889-2899.], it is domestic and
Also occur many similar patents in the world, such as 200420107832.5,201510278266.7, institute's public affairs such as WO2007035011
The technology opened.Multi needle electrostatic spinning technique spinneret position is controllable, feeding liquid measure, controllable, spinning process is stablized, and had in yield
Greatly improve, but occur serious " edge effect (End effect) " phenomenon during Multi needle electrostatic spinning, i.e.,
Due to, there are electrostatic repulsion, causing the jet stream that the syringe needle on both sides comes out to make to connect to both sides knockdown between same row's Multi needle
Receiving apparatus can only receive the few fibers of centre, cause electrostatic spinning efficiency and yield to be had a greatly reduced quality, simultaneously as each syringe needle
Between field strength interfere with each other so that field strength distribution is uneven, causes the tunica fibrosa uniformity that obtains bad；In addition, pin
Head blocks, inconvenience is cleaned, the electrically charged reflux of syringe pump finite capacity and syringe needle institute easily leads to electric elements damage, infusion pipeline
The problems such as explosion easily occurs and catches fire, all largely hinders the industrialized process of Multi needle electrostatic spinning.
The content of the invention
In view of the deficiencies of the prior art, the technical problem to be solved by the invention is to provide a kind of solid syringe needle Static Spinning
Silk device, solves the blocking of conventional needle tubular type electrostatic spinning apparatus syringe needle, inconvenience cleaning and the uneven and existing " edge of field strength
The problems such as effect ".
The technical solution that the present invention solves the technical problem is to design a kind of solid syringe needle electrostatic spinning apparatus, including
Liquid-supplying system, solid syringe needle spinneret system, jacking system, electric power system, reception device and control system.
Core component designed by the present invention is solid syringe needle spinneret system, is led by solid syringe needle, wire conducting wire, insulation
Liquid rod, support plate, spinning head liquid storage box composition；The solid syringe needle, its syringe needle are coniform needle point, its foot section brought pinprick,
Centre is the cylinder needle body；The insulation drain rod, material are one kind in polyamide, polyethylene, polytetrafluoroethylene (PTFE) etc., its bottom
To be coniform, centre is cylindric, and top is cylindric block machine, and there are centre bore, aperture and solid needle head diameter of needle body phase in axle center
Deng；The support plate, intermediate position are provided with N rows (N be positive integer) more than or equal to 1 through hole equidistantly arranged, aperture with
The drain rod intermediate cylindrical diameter that insulate is equal；The spinning head liquid storage box, bottom are provided with the N row circular cone countersunk heads equidistantly arranged and lead to
Hole, aperture is equal with insulation drain rod intermediate cylindrical diameter, top-slitting, appearance and size of slotting and support plate appearance and size phase
Together, depth is more than the height of insulation drain rod bottom circular cone, and reservoir portion appearance and size is smaller than the appearance and size of top-slitting, from
And a block machine is formd in liquid storage tank centre position；In the solid syringe needle insertion insulation drain rod centre bore, needle point is just
Expose insulation drain rod bottom, pinprick just exposes at the top of insulation drain rod；In the insulation drain rod insertion support plate, absolutely
Edge drain rod block machine bottom surface is in contact with support plate top surface；The support plate be placed in spinning head liquid storage box fluting in, its bottom surface with
Block machine contact among spinning head liquid storage box, insulation drain rod bottom circular cone pass through spinning head liquid storage box bottom circular cone countersunk head through hole,
And it is in close contact；The wire conducting wire pass through each solid needle scalp acupuncture small hole in, with solid needle contact.
Compared with existing Multi needle electrostatic spinning apparatus, the solid syringe needle electrostatic spinning apparatus designed by the present invention is using absolutely
Edge drain rod wraps up solid syringe needle, hence it is evident that reduces the electrostatic repulsion between syringe needle；Insulate drain rod and spinning head liquid storage box
Bottom circular cone countersunk head through hole is in close contact, and insulation drain rod up moves under the drive of jacking system, in circular cone counter sink portion
Gap between the two becomes larger, so that have drop along the circular cone outflow of insulation drain rod bottom, it is electric at solid needle tip
Field excitation and produce taylor cone, due to insulation drain rod can move up and down, can effectively solve capillary needle type static spinning and block up
Fill in phenomenon；, can meanwhile the height by adjusting insulation drain rod makes each solid syringe needle be in suitable distance with receiving electrode
Realize that field strength is uniform at each solid needle tip, so as to reach the effect of uniform spinning.
Brief description of the drawings
Fig. 1 is a kind of solid overall structure diagram of embodiment of syringe needle electrostatic spinning apparatus of the present invention；
Fig. 2 is a kind of solid syringe needle spinneret system exploded isometric of the solid embodiment of syringe needle electrostatic spinning apparatus of the present invention
Figure；
Fig. 3 is that a kind of solid syringe needle spinneret system plan structure of the solid embodiment of syringe needle electrostatic spinning apparatus of the present invention is shown
It is intended to；
Fig. 4 is A-A faces schematic cross-sectional view in Fig. 3；
Fig. 5 is the PVDF nanofiber SEM photograph figures that a kind of solid embodiment of syringe needle electrostatic spinning apparatus of the present invention obtains.
Embodiment
The present invention is further discussed below with reference to embodiment and its attached drawing：
The solid syringe needle electrostatic spinning apparatus (abbreviation device, referring to Fig. 1~4) that the present invention designs, including liquid-supplying system, reality
Heart syringe needle spinneret system, jacking system, electric power system, reception device and control system.
The liquid-supplying system is the prior art, including spinning pump (abbreviation metering pump or spinning pump) 11 and reservoir
12, the feed liquor mouth of pipe of metering pump 11 is probeed into below the spinning solution liquid level in reservoir 12, under the action of metering pump 11, feed flow system
Unite and quantitatively provide spinning solution to solid syringe needle spinning system.
The solid syringe needle spinneret system is the core or feature of the present invention, is mainly led including solid syringe needle 21, wire
Line 22, insulation drain rod 23, support plate 24, spinning head liquid storage box 25 form；The syringe needle of solid syringe needle 21 is coniform needle point, tail
Portion's band pinprick, centre is the cylinder needle body (diameter 1~2mm, length 35mm)；23 material of drain rod that insulate is polyamide, poly- second
One kind in alkene, polytetrafluoroethylene (PTFE) etc., its bottom are coniform, and centre is cylindric (diameter 10~12mm, length 23mm), top
Portion is cylindric block machine, and there is centre bore in axle center, and aperture is equal with solid needle head diameter of needle body；24 centre position of support plate is provided with
The N rows through hole (spacing is 28~35mm) of spacing arrangement, aperture are equal with insulation 23 intermediate cylindrical diameter of drain rod；Spinning head stores up
25 bottom of liquid box is provided with the N row circular cone countersunk head through holes equidistantly arranged, and aperture is equal with insulation 23 intermediate cylindrical diameter of drain rod,
Top-slitting, fluting appearance and size is identical with 24 appearance and size of support plate, and depth is more than the height of 23 bottom circular cone of insulation drain rod
Degree, reservoir portion appearance and size is smaller than the appearance and size of top-slitting, so as to be formd in 25 centre position of spinning head liquid storage box
One block machine；Support plate 24 and the material of spinning head liquid storage box can be PTFE (polytetrafluoroethylene (PTFE)), glass, contour performance Jie of ceramics
Electric material, preferable selection is glass or high-performance organic glass, so easy to observation and technological operation.Solid syringe needle 21 is inserted
Enter to insulate in 23 centre bore of drain rod, needle point just exposes 23 bottom of insulation drain rod, and pinprick just exposes insulation drain rod
23 tops；The drain rod 23 that insulate is inserted into support plate 24, and 23 block machine bottom surface of insulation drain rod is in contact with 24 top surface of support plate；Branch
Fagging 24 is placed in the fluting of spinning head liquid storage box 25, its bottom surface and 25 middle block machine of spinning head liquid storage box contact, and insulate drain rod
23 bottom circular cones pass through 25 bottom circular cone countersunk head through hole of spinning head liquid storage box, and are in close contact；Wire conducting wire 22 passes through each reality
In 21 pinprick of heart syringe needle, contacted with solid syringe needle 21.
The jacking system 30 is mainly manually turned or realized using driving stepper motor leading screw lifting platform vertical
Elevating movement, the jacking system are connected with support plate 24, support plate 24 can be controlled to lift as needed, to adjust insulation drain
Gap between rod 23 and spinning head liquid storage box bottom circular cone countersunk head through hole, realization suitably supply flow quantity, vertical displacement movement
Distance be 3~8mm.
The electric power system includes positive high voltage DC power supply 41 and negative high voltage DC power supply 42；The reception device is mainly wrapped
Include the conventional gear trains such as receiving electrode 51, base fabric, deflector roll 52, withdrawal roller and take-up roll and negative-pressure air-suction machine (withdrawal roller and volume
It is not shown in FIG. 1 around roller, negative-pressure air-suction machine etc.)；The control system mainly includes to liquid-supplying system, jacking system and reception
The control of device.
The operation principle and process of apparatus of the present invention be (referring to Fig. 1)：Reducing support plate 24 by jacking system 30 makes absolutely
23 bottom circular cone of edge drain rod passes through 25 bottom circular cone countersunk head through hole of spinning head liquid storage box, to ensure that spinning head liquid storage box 25 is in
Sealing state；Prepared polymer dope is put into reservoir 12, polymer dope is measured by spinning pump 11
By in inlet feeding spinning head liquid storage box 25, spinning solution memory block is formed；Wire conducting wire 22 is connected into positive high voltage direct current
Power supply 41, receiving electrode 51 are grounded or are connected into negative high voltage DC power supply 42, are formed between solid syringe needle 21 and receiving electrode 51 high
Press electrostatic field；Control jacking system 30 to adjust the height of support plate 24, make 23 bottom circular cone of insulation drain rod and spinning head liquid storage
The gap of 25 bottom circular cone countersunk head through hole of box becomes larger, and reaches predetermined amount of flow, and polymer dope begins to flow out spinning head storage
25 small hole at bottom part of liquid box, and polymer drop is formed at the solid needle tip exposed；Adjust voltage and reach critical spinning electricity
During pressure, there is taylor cone at each solid needle tip, once step stretching of going forward side by side is moved into spinning jet 60 towards receiving electrode 51.
At the same time, the solvent in polymer dope constantly volatilizees, and polymer gradually cools down, and when reaching reception device, polymer is solid
Change, form nanofiber, including web, film or non-woven fabric material.
Apparatus of the present invention effectively prevent existing electrostatic repulsion (" End during traditional needle-based electrostatic spinning
Effect " phenomenons), syringe needle block and the problems such as inconvenience cleaning, and the surface charge of single electrospinning unit can be greatly enhanced
Density, so as to improve utilization rate of electrical, reduce production cost and expense, the fineness of gained nanofiber product is thinner, and more
Uniformly, product quality and yield are greatly improved and.
The present invention does not address part and is suitable for the prior art.
The spinning experiment of the embodiment of the present invention is given below.The spinning experiment of embodiment is only used for further illustrating this hair
It is bright, the limitation to the present patent application claim is not formed.
For the spinning experiment of embodiment using the solid syringe needle electrostatic spinning apparatus (referring to Fig. 1) of the present invention, spinning solution is dense
Spend the PVDF for 15%.Embodiment experiment detailed process is as follows：
1st, spinning solution is prepared：
PVDF is put into the dry 12h of 80 DEG C of vacuum in vacuum drying chamber, it is molten that the PVDF of weighing is put into the mixing of DMF/ acetone
In agent, solvent mixture proportions 7: 3, are put into magnet rotor, are transferred in thermostat water bath and at the uniform velocity stir for 50 DEG C, until solution is clear
It is clear it is bright, stable homogeneous is static stand-by.
2nd, test：
Spinning solution is put in reservoir, cathode high-voltage DC power supply is connected with solid syringe needle, receiving electrode and base fabric
For aluminium-foil paper, it is connected with negative high voltage DC power supply, positive high voltage DC power output voltage is 20kV, negative high voltage power source output voltage
For 10kV, it be 30cm to receive distance, and acquisition average diameter is 1.15 μm, the PVDF nano-fiber films of CV=12%, its nanometer
The SEM photograph of fiber, can be by optimizing spinning solution parameter and the thinner nanometer of spinning process gain of parameter diameter referring to Fig. 4
Fiber.
Claims (1)
1. a kind of solid syringe needle electrostatic spinning apparatus, including liquid-supplying system, solid syringe needle spinneret system, jacking system, power supply system
System, reception device and control system, it is characterised in that：The solid syringe needle spinneret system by solid syringe needle, wire conducting wire,
Insulate drain rod, support plate, spinning head liquid storage box composition；The solid syringe needle, syringe needle are coniform needle point, its foot section brought pinprick
Youngster, centre is the cylinder needle body；The insulation drain rod, material is polyamide, one kind in polyethylene, polytetrafluoroethylene (PTFE), its bottom
Portion is coniform, and centre is cylindric, and top is cylindric block machine, and there are centre bore, aperture and solid needle head diameter of needle body in axle center
It is equal；The support plate, centre position are provided with the N row through holes equidistantly arranged, and N is the positive integer more than or equal to 1, aperture with absolutely
Edge drain rod intermediate cylindrical diameter is equal；The spinning head liquid storage box, bottom are provided with the N row circular cone countersunk heads equidistantly arranged and lead to
Hole, aperture is equal with insulation drain rod intermediate cylindrical diameter, top-slitting, appearance and size of slotting and support plate appearance and size phase
Together, depth is more than the height of insulation drain rod bottom circular cone, and reservoir portion appearance and size is smaller than the appearance and size of top-slitting, from
And a block machine is formd in liquid storage tank centre position；In the solid syringe needle insertion insulation drain rod centre bore, needle point is just
Expose insulation drain rod bottom, pinprick just exposes at the top of insulation drain rod；In the insulation drain rod insertion support plate, absolutely
Edge drain rod block machine bottom surface is in contact with support plate top surface；The support plate be placed in spinning head liquid storage box fluting in, its bottom surface with
Block machine contact among spinning head liquid storage box, insulation drain rod bottom circular cone pass through spinning head liquid storage box bottom circular cone countersunk head through hole,
And it is in close contact；The wire conducting wire pass through each solid needle scalp acupuncture small hole in, with solid needle contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610804952.8A CN106119995B (en) | 2016-09-02 | 2016-09-02 | A kind of solid syringe needle electrostatic spinning apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610804952.8A CN106119995B (en) | 2016-09-02 | 2016-09-02 | A kind of solid syringe needle electrostatic spinning apparatus |
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| Publication Number | Publication Date |
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| CN106119995A CN106119995A (en) | 2016-11-16 |
| CN106119995B true CN106119995B (en) | 2018-04-13 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151823A (en) * | 2017-05-22 | 2017-09-12 | 苏州大学 | Electrostatic spinning apparatus |
| CN107151824A (en) * | 2017-06-30 | 2017-09-12 | 天津工业大学 | A kind of electrostatic spinneret system based on solid needle spinning appts |
| CN108034995B (en) * | 2018-01-12 | 2023-09-26 | 华南协同创新研究院 | Solid needle electrostatic spinning equipment |
| CN110670156A (en) * | 2019-09-26 | 2020-01-10 | 佛山轻子精密测控技术有限公司 | Needle tip induction electrostatic spinning nozzle and needle tip induction electrostatic spinning device |
| CN111005077A (en) * | 2019-12-02 | 2020-04-14 | 厦门纳莱科技有限公司 | Core-string type multi-needle electrostatic spinning nozzle and electrostatic spinning device |
| CN111118620B (en) * | 2019-12-30 | 2021-12-21 | 东华大学 | Saturated micro-liquid-level solid needle array spinning device and using method thereof |
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| CN203007508U (en) * | 2012-06-25 | 2013-06-19 | 天津工业大学 | Solid needle electrode static spinning apparatus |
| CN203451652U (en) * | 2013-07-16 | 2014-02-26 | 东华大学 | Three-dimensional type multi-spinning-nozzle spinneret plate for electrostatic spinning |
| CN203583025U (en) * | 2013-12-05 | 2014-05-07 | 厦门大学 | Electrostatic spinning device |
| 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 |
| CN105624807A (en) * | 2016-04-01 | 2016-06-01 | 厦门大学 | Weissenberg effect-based micro-porous batch electrostatic spinning device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1929074A4 (en) * | 2005-09-26 | 2009-09-02 | Hak-Yong Kim | Conjugate electrospinning devices, conjugate nonwoven and filament comprising nanofibers prepared by using the same |
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- 2016-09-02 CN CN201610804952.8A patent/CN106119995B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2753747Y (en) * | 2004-10-27 | 2006-01-25 | 东华大学 | Spinneret plate for electrostatic spinning |
| CN203007508U (en) * | 2012-06-25 | 2013-06-19 | 天津工业大学 | Solid needle electrode static spinning apparatus |
| CN203451652U (en) * | 2013-07-16 | 2014-02-26 | 东华大学 | Three-dimensional type multi-spinning-nozzle spinneret plate for electrostatic spinning |
| CN203583025U (en) * | 2013-12-05 | 2014-05-07 | 厦门大学 | Electrostatic spinning device |
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| CN105624807A (en) * | 2016-04-01 | 2016-06-01 | 厦门大学 | Weissenberg effect-based micro-porous batch electrostatic spinning device |
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