CN103484954A - Electrostatic spinning device for preparing nanofibers - Google Patents
Electrostatic spinning device for preparing nanofibers Download PDFInfo
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- CN103484954A CN103484954A CN201310479063.5A CN201310479063A CN103484954A CN 103484954 A CN103484954 A CN 103484954A CN 201310479063 A CN201310479063 A CN 201310479063A CN 103484954 A CN103484954 A CN 103484954A
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Abstract
The invention discloses an electrostatic spinning device for preparing nanofibers. The device mainly comprises a liquid spraying device, an electrostatic generator, a needle electrode, a plate electrode, a spinning pond, a liquid storage tank and a receiving curtain, wherein the liquid spraying device is fixed at the bottom of the spinning pond to be connected with the liquid storage tank, the needle electrode is arranged at the bottom of the spinning pond to be connected with the electrostatic generator, the plate electrode is arranged above the spinning pond and is grounded, and the receiving curtain is arranged below the plate electrode. During spinning, a solution is fed into the liquid spraying device from the liquid storage tank at certain pressure and certain flow rate, and forms a petunia-shaped thin liquid film at the top end of the liquid spraying device, the electrostatic generator enables a static electric field to be formed between the needle electrode and the plate electrode, jet flow is formed at the top end of the liquid film and flies off, and is deposited on the receiving curtain to form a nanofiber felt, and a solution in the spinning pond is pumped back into the liquid storage tank. The electrostatic spinning device has the benefits that the structure is simple, the cost is low, a spinning solution can be recycled, the production efficiency is high, large-scale production of the nanofibers can be realized, and requirements on the nanofibers and relevant products of industrial production are met.
Description
Technical field
The present invention relates to a kind of electrostatic spinning apparatus for preparing nanofiber, belong to weaving and new material technology field, specifically with a kind of bubbler, spray the thin liquid film of similar trumpet flower shape, and this liquid film top there is multiple jets to produce and the final device that forms nanofiber mats under the actings in conjunction such as HV generator, electrode and reception curtain.
Background technology
Electrostatic spinning technique is a kind of technology of utilizing electrostatic force to make polymer solution or melt produce jet and finally being cured as nanofiber.The cardinal principle of this technology is the drop that at first makes polymer solution or melt composition surface curvature, fluid column film, bubble, crateriform protuberance etc., then utilizes electrostatic force from curved surface top ejection jet.Jet flies to negative plate under the effects such as electric field force, surface tension, during the refinement that is stretched, the solvent evaporation, jet is cured as nanofiber and finally is deposited on dash receiver, forms nanofiber mats.The nanofiber diameter obtained by electrostatic spinning technique does not wait to several microns from tens nanometer, its specific area is large, between fiber, porosity is high, at aspects such as textile garment, environmental project, sensor, organizational project, medicament slow release, energy and material and catalysis, is applied widely.
Traditional electrostatic spinning apparatus adopts the pinhead-sized spinning head of syringe-like more, so the taylor cone of spinning head top formation is generally the droplet of 1 millimeter of diameter.Single jet is generally only sprayed on the medium and small drop of electrostatic spinning process top, nanofiber output is lower, be about 0.01-0.3g/h (visible document " Needleless electrospinning:influences of fibre generator geometry " (Niu H, Wang X, Lin T.The Journal ofthe Textile Institute, 103 (7), 2012,787-794.)), can not meet suitability for industrialized production and the application demand to nanofiber.Therefore, the numerous and confused development of new electrospinning process of domestic and international many researchers and enterprise and device.
At present, the electrostatic spinning apparatus of improved nanofiber output commonly used comprises multiple injector electrostatic spinning device, swing roller electrostatic spinning apparatus etc.These electrospinning process and install visible document " Experimental investigations on the multi-jet electrospinning process " (A.Varesano, R.A.Carletto, and G. Mazzuchetti, , J Mater Process Tech, 209 (11) (2009) 5178-5185), " Needleless electrospinning.I.A comparison of cylinder and disk nozzles " (H.Niu, T.Lin, and X.Wang, , J.Appl.Polym.Sci., 114 (6) (2009) 3524-3530.), " multiple spray head static spinning machine spinning state and fibre structure are arranged in parallel " (Pan Fangliang, look into handsome punching, Pan Zhijuan, silk [J], 2012 (1), 21-26.) and Chinese patent as CN200999274, CN101050550 etc., United States Patent (USP) is as US1975504, US2011/0059261A1 etc., world patent WO2012/077867A1 and European patent EP 2557206 etc.These methods still exist as equipment is complicated, cost is high, technology is perfect not, commercially produce the defects such as difficult.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of simple in structure, reasonable in design, cost is low and can improve the electrostatic spinning apparatus of nanofiber output.This device comprises that spinning system, liquid-supplying system, receiving system and four parts of transmission system form.Wherein spinning system comprises that bubbler, spinning pond, HV generator, needle electrode and plate electrode form, and liquid-supplying system is comprised of liquid storage tank, liquid-feeding pump, drawing liquid pump and conduit; Receiving system comprises the reception curtain, send curtain roller and rolling curtain roller to form; Transmission system comprises that driving motor, belt wheel, bearing and wire form.Bubbler mainly is comprised of sparge pipe and pressure mouth, and lower end is fixed on spinning pond bottom centre position, and is connected with squeeze pump by conduit, and the squeeze pump other end is connected with liquid storage tank.Bottom, spinning pond is evenly distributed with 4 outages near the wall end, and outage is connected with drawing liquid pump by conduit, and the drawing liquid pump other end is connected with liquid storage tank.Needle electrode is that some vertical metal fine needles form, and these metal fine needles can be arranged in circular concentric or rectangular according to spinning pond shape, are arranged on bottom, spinning pond, by wire, with HV generator, are connected.Plate electrode is fixed on directly over the spinning pond a distance and is connected with the earth by wire, and a reception curtain is arranged between spinning pond and plate electrode, receives curtain near plate electrode, by driving motor, with sending the curtain roller, with rolling curtain roller, is connected.At first the liquid storage tank of the solution configured being packed into during spinning, by liquid-feeding pump, spinning solution is pressed into to bubbler, because the refraction action of bubbler upper press nozzle forms the thin liquid film of trumpet flower shape, the taylor cone of similar conventional electrostatic spinning, form electrostatic field between needle electrode and plate electrode, under the effect of electrostatic force, the liquid film top has jet to penetrate, fly to the reception curtain, solvent evaporates in jet during this time, jet is cured as nanofiber, be deposited on to receive on curtain and form nanofiber mats, through driving motor, send curtain roller and rolling curtain roller to make the nanofiber mats rolling.
The technical solution adopted for the present invention to solve the technical problems is:
(1) prepare polymer solution: polymer masterbatch and solvent are uniformly mixed in agitator with suitable mass fraction specific concentration, after standing 1-2 hour, then send in sump assemblies standby to the polymer solution prepared; Described polymer refers to the polymer of water soluble or other organic solvent, includes but are not limited to polyvinyl alcohol, polyvinylpyrrolidone, polyacrylonitrile or polyester; Described solvent includes but are not limited to water, ethanol, dimethyl methylamine or chloroform; Described suitable mass percent concentration refers to that described polymer solution can carry out the suitable mass percent concentration of spinning.
(2) form the flower-shaped thin solution film of loudspeaker: liquid-feeding pump is sent into bubbler through conduit by polymer solution with suitable pressure and flow from liquid storage tank, on the bubbler top, upwards spray, liquid is due to the refraction action that is subject to bubbler top pressure mouth, the solution sprayed forms shaped liquid film, because sparge pipe and pressure mouth are all circular, finally form the flower-shaped thin solution film of loudspeaker.The height of the flower-shaped liquid film of these loudspeaker and diameter can be regulated by adjust flux and pressure at the liquid-feeding pump place.The residue spinning solution that has neither part nor lot in spinning reenters liquid storage tank under the discharge of the outage bottom the spinning pond the effect at drawing liquid pump, realizes that spinning solution is recycled and the spinning circulation.
(3) forming many jets sprays: after forming the flower-shaped liquid film of loudspeaker of suitable size and height, open HV generator, between metal needle and dash receiver electrode, form high-voltage electrostatic field.Along with after voltage is increased to certain value, under the effect of electrostatic field force, the flower-shaped liquid film of loudspeaker top has multiple jets to penetrate, and jet flies to negative plate under the electric field force effect, during solvent evaporates, jet is solidified into nanofiber.
(4) receive nanofiber: be equipped with one between dash receiver and spinning pond width is identical with dash receiver but length is longer than the reception curtain of dash receiver, this reception curtain is close to dash receiver, adjust the vertical range on dash receiver, reception curtain and top, spinning pond, and the movement velocity that receives curtain, obtained nanofiber is collected in and receives on curtain, and form the nano fiber non-woven fabric felt.
Compared with prior art, the present invention is by introducing bubbler, make polymer solution form the flower-shaped thin solution film of loudspeaker on the bubbler top to improve the device of electrostatic spinning nano fiber preparation efficiency, and collect nanofiber mats through receiving system, method is simple and easy to operate, can significantly improve nanofiber production efficiency, reduce production costs, save the energy; This device can be under relatively low voltage electrostatic spinning, reduced high voltage condition to the requirement of apparatus insulated property; The flower-shaped liquid film size of the loudspeaker that this device sprays and highly can conveniently regulating, simple to operate, and realize that spinning solution recycles, and implementation cost is low, and output is high, and industrialization promotion is easy.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
The principle schematic that Fig. 1 is electrostatic spinning apparatus of the present invention.
The principle schematic that Fig. 2 is bubbler in electrostatic spinning apparatus of the present invention.
The schematic diagram that Fig. 3 is each parts of bubbler in electrostatic spinning apparatus of the present invention.
The circular spinning pond that Fig. 4 is electrostatic spinning apparatus of the present invention, bubbler, needle electrode and outage installation site schematic top plan view.
The square spinning pond that Fig. 5 is electrostatic spinning apparatus of the present invention, bubbler, needle electrode and outage installation site schematic top plan view.
Fig. 6 is that bubbler of the present invention uses pressure mouth that inclination angle is 80 degree and the flower-shaped liquid film of loudspeaker and the jet schematic diagram of formation.
Fig. 7 is that bubbler of the present invention uses pressure mouth that inclination angle is 60 degree and the flower-shaped liquid film of loudspeaker and the jet schematic diagram of formation.
Fig. 8 is that bubbler of the present invention uses pressure mouth that inclination angle is 20 degree and the flower-shaped liquid film of loudspeaker and the jet schematic diagram of formation.
The circular spinning pond that Fig. 9 is electrostatic spinning apparatus of the present invention, 5 bubblers, needle electrode and outage installation site schematic top plan view.
In figure: 1. bubbler 2. HV generator 3. needle electrode 4. plate electrodes 5. reception curtain 6. liquid storage tank 7. spinning pond 8. liquid-feeding pump 9. drawing liquid pumps 10. send curtain roller 11. rolling curtain roller 12. conduit 13. outage 14. motor 15. pressure mouth 16. fixed screw 17. loudspeaker flower-shaped liquid film 18. jet 1 ' sparge pipes.
The specific embodiment
In Fig. 1, electrostatic spinning apparatus of the present invention, bubbler 1 by sparge pipe 1 ' and pressure mouth 15 form, wherein pressure mouth 15 by fixed screw 16 be fixed on sparge pipe 1 ' on, the sparge pipe lower end is fixed on spinning pond 7 bottom centre positions, and by conduit 12, with liquid-feeding pump 8, be connected, liquid-feeding pump 8 other ends are connected with liquid storage tank 6.7 bottoms, spinning pond are evenly distributed with 4 outages 13 near the wall end, and outage 13 is connected with drawing liquid pump 9 by conduit 12, and drawing liquid pump 9 other ends are connected with liquid storage tank 6.Needle electrode 3 is that some vertical metal fine needles form, and these needle electrodes 3 can be arranged in circular concentric or rectangular according to spinning pond shape, are arranged on 7 bottoms, spinning pond, by wire, with HV generator 2, are connected.Plate electrode 4 is fixed on directly over spinning pond 7 a distance and is connected with the earth by wire, and a reception curtain 5 is arranged between spinning pond 7 and plate electrode 4, receives curtain 5 near plate electrode 4, by driving motor 14, with sending curtain roller 10, with rolling curtain roller 11, is connected.During electrostatic spinning, at first the polymer dope configured is packed in liquid storage tank 6, with certain pressure, spinning solution is sent into to bubbler 1 by liquid-feeding pump 8, because the refraction action of bubbler 1 upper press nozzle forms the thin liquid film 17 of trumpet flower shape, the taylor cone of similar conventional electrostatic spinning.Open HV generator 2, form electrostatic field at needle electrode 3 and 4 of plate electrodes, when reaching liquid film 17 tops under the effect of timing at electrostatic force, voltage have jet 18 to penetrate, fly to and receive curtain 5, solvent evaporates in jet during this time, jet 18 is cured as nanofiber, is deposited on to receive on curtain 5 to form nanofiber mats, through driving motor 14, send curtain roller 10 and rolling curtain roller 11 actings in conjunction to make the nanofiber mats rolling.The surplus solution of spinning is not discharged and reenter liquid storage tank 6 under the effect of drawing liquid pump 9 through the outage 13 of 7 bottoms, spinning pond, further carries out electrostatic spinning, realizes that spinning solution takes full advantage of and recycles.
In technical solutions according to the invention, the suitable mass percent concentration of described spinning solution is main relevant with good solvent used with macromolecule polymer material and molecular weight thereof, for example, when described polymer is selected polyvinylpyrrolidone (PVP K-30), it dissolves in the mixed solvent that water and ethanol mass ratio are 1: 9 ratio, when mass percent concentration reaches 30% when above, just can meet described technological requirement.And during the polyvinyl alcohol that is 86～89mol%, molecular weight 2700～3200 for alcoholysis degree, at water and ethanol, with mass ratio, in the mixed solvent with 1: 1 ratio, dissolve, when mass percent concentration reaches 10% when above, just can meet described technological requirement.
Below provide specific embodiments of the invention.Specific embodiment only, for further illustrating the present invention, does not form the restriction to the present patent application claim.
Design a kind of electrostatic spinning apparatus that improves the nanofiber preparation efficiency, comprise bubbler 1, HV generator 2, needle electrode 3, plate electrode 4, receive curtain 5, liquid storage tank 6, spinning pond 7, liquid-feeding pump 8, drawing liquid pump 9, send curtain roller 10, rolling curtain roller 11, conduit 12, outage 13, motor 14, pressure mouth 15, fixed screw 16, the flower-shaped liquid film 17 of loudspeaker, jet 18, sparge pipe 1 ', as shown in Figure 1.Wherein sparge pipe 1 in bubbler 1 ' height be 50mm, diameter is 20mm, in bubbler 1, the height of pressure mouth 15 is 8mm, diameter is 30mm, the inclination angle of pressure mouth 15 is 80 °, as shown in Fig. 2,3,6; Spinning pond 7 is circular, and diameter is 200mm, is highly 80mm, glass material, as shown in Figure 4; Needle electrode 3 length are that 10mm, diameter are 0.5mm, solid construction; Plate electrode 4 length and width are 220mm, and thickness is 1mm, and plate electrode 4 is 50mm with spinning pond 7 top distances, and it is the reception curtain 5 that 220mm and length are not limit that there is a fabric width at plate electrode 4 1mm places, below.
Before spinning, first weighing polyvinyl alcohol powder 2000 grams, and than concentration, mix with the quality with 12% with distilled water, heating water bath (80 ℃), after 3-4 hour, standing two hours, makes the polyvinyl alcohol spinning solution; Then the poly-vinyl alcohol solution configured is packed in liquid storage tank 6, opens liquid-feeding pump 8, with the flow of 30kpa pressure and 1L/h by spinning solution be pressed into sparge pipe 1 ', form the flower-shaped liquid film 17 of loudspeaker on the bubbler top under the effect of pressure mouth 15.Open drawing liquid pump 9 simultaneously, the not spinning solution that falls into 7 bottoms, spinning pond is extracted out and injected liquid storage tank 6 through outage 13.Open HV generator 2, voltage rises to 20KV, under the effect of electric field force, multiple jets 18 is arranged from the flower-shaped liquid film 17 top ejections of loudspeaker, fly to plate electrode 4, during solvent evaporates, jet 18 stretches and is refined into nano-scale fiber under the effect of electrostatic force, received curtain 5 is collected, and at motor 14, send rolling under curtain roller 10 and rolling curtain roller 11 effects.Polyvinyl alcohol nano diameter 30 nanometers to 1 micron that obtain do not wait, wherein about 600 nanometers of average diameter.
The present embodiment adopts and implements 1 essentially identical device and technique, as shown in Figure 1.Its variation is: bubbler 1 is highly 40mm, and diameter is 22mm, and in bubbler 1, the height of pressure mouth 15 is 6mm, and diameter is 36mm, and the inclination angle of pressure mouth 15 is 60 °, as shown in Fig. 2,3,7; Spinning pond 7 is square, and the long and wide 60mm that is, be highly 65mm, the lucite material, as shown in Figure 5; Needle electrode 3 length are that 20mm, diameter are 0.9mm, hollow-core construction; Plate electrode 4 length and width are 80mm, and thickness is 0.7mm, and plate electrode 4 is 40mm with spinning pond 7 top distances, and it is the reception curtain 5 that 80mm and length are not limit that there is a fabric width at plate electrode 4 0.5mm places, below.
Before spinning, first take polyvinylpyrrolidone (PVP K-30) powder 1000 grams, and take mass ratio with water and ethanol and dissolve in the mixed solvent of 1: 9 ratio, the quality of preparation is 36% than concentration, heating water bath (30 ℃) is after 3-4 hour, standing two hours, make the polyvinylpyrrolidone spinning solution; Then the polyvinylpyrrolidonesolution solution configured is packed in liquid storage tank 6, opens liquid-feeding pump 8, with the flow of 40kpa pressure and 2L/h by spinning solution be pressed into sparge pipe 1 ', form the flower-shaped liquid film 17 of loudspeaker on the bubbler top under the effect of pressure mouth 15.Open drawing liquid pump 9 simultaneously, the not spinning solution that falls into 7 bottoms, spinning pond is extracted out and injected liquid storage tank 6 through outage 13.Open HV generator 2, voltage rises to 30KV, under the effect of electric field force, multiple jets 18 is arranged from the flower-shaped liquid film 17 top ejections of loudspeaker, fly to plate electrode 4, during solvent evaporates, jet 18 stretches and is refined into nano-scale fiber under the effect of electrostatic force, received curtain 5 is collected, and at motor 14, send rolling under curtain roller 10 and rolling curtain roller 11 effects.Polyvinylpyrrolidonenanometer nanometer fiber diameter 20 nanometers to 1 micron that obtain do not wait, wherein about 400 nanometers of average diameter.
The present embodiment adopts and implements 1 essentially identical device and technique, as shown in Figure 1.Its variation is: bubbler 1 is highly 60mm, and diameter is 16mm, and in bubbler 1, the height of pressure mouth 15 is 8mm, and diameter is 24mm, and the inclination angle of pressure mouth 15 is 20 °, as shown in Fig. 2,3,4,8; Spinning pond 7 is circular, and diameter is 60mm, is highly 80mm, glass material, as shown in Figure 4; Needle electrode 3 length are that 30mm, diameter are 0.6mm, solid construction; Plate electrode 4 length and width are 70mm, and thickness is 1.5mm, and plate electrode 4 is 30mm with spinning pond 7 top distances, and it is the reception curtain 5 that 70mm and length are not limit that there is a fabric width at plate electrode 4 1.5mm places, below.
Before spinning, first take polyacrylonitrile polymer powder 500 grams, and mix than concentration with 12% quality with the solvent dimethyl formamide, heating water bath (50 ℃), after 3-4 hour, standing two hours, makes polyacryl-nitrile spinning fluid; Then the polyacryl-nitrile spinning fluid configured is packed in liquid storage tank 6, opens liquid-feeding pump 8, with the flow of 50kpa pressure and 4L/h by spinning solution be pressed into sparge pipe 1 ', form the flower-shaped liquid film 17 of loudspeaker on the bubbler top under the effect of pressure mouth 15.Open drawing liquid pump 9 simultaneously, the not spinning solution that falls into 7 bottoms, spinning pond is extracted out and injected liquid storage tank 6 through outage 13.Open HV generator 2, voltage rises to 35KV, under the effect of electric field force, multiple jets 18 is arranged from the flower-shaped liquid film 17 top ejections of loudspeaker, fly to plate electrode 4, during solvent evaporates, jet 18 stretches and is refined into nano-scale fiber under the effect of electrostatic force, received curtain 5 is collected, and at motor 14, send rolling under curtain roller 10 and rolling curtain roller 11 effects.Polyvinylpyrrolidonenanometer nanometer fiber diameter 40 nanometers to 1 micron that obtain do not wait, wherein about 300 nanometers of average diameter.
Embodiment 4
The present embodiment adopts and implements 1 essentially identical device and technique, as shown in Figure 1.Its variation is: bubbler 1 is highly 30mm, and diameter is 18mm, and in bubbler 1, the height of pressure mouth 15 is 6mm, and diameter is 22mm, and the inclination angle of pressure mouth 15 is 45 °, 5 of bubblers, as shown in Figure 2,3; Spinning pond 7 is circular, and diameter is 200mm, is highly 60mm, glass material; Needle electrode 3 length are that 25mm, diameter are 0.4mm, solid construction; Plate electrode 4 length and width are 200mm, and thickness is 0.8mm, and plate electrode 4 is 40mm with spinning pond 7 top distances, and it is the reception curtain 5 that 200mm and length are not limit that there is a fabric width at plate electrode 4 1.2mm places, below.
Before spinning, first take PA 66 Powder 1000 grams, and mix than concentration with 20% quality with solvent formic acid, heating water bath (80 ℃), after 3-4 hour, standing two hours, makes nylon 66 spinning solutions; Then nylon 66 spinning solutions that configure are packed in liquid storage tank 6, open liquid-feeding pump 8, with the flow of 45kpa pressure and 2.5L/h by spinning solution be pressed into sparge pipe 1 ', form the flower-shaped liquid film 17 of loudspeaker on the bubbler top under the effect of pressure mouth 15.Open drawing liquid pump 9 simultaneously, the not spinning solution that falls into 7 bottoms, spinning pond is extracted out and injected liquid storage tank 6 through outage 13.Open HV generator 2, voltage rises to 30KV, under the effect of electric field force, multiple jets 18 is arranged from the flower-shaped liquid film 17 top ejections of loudspeaker, fly to plate electrode 4, during solvent evaporates, jet 18 stretches and is refined into nano-scale fiber under the effect of electrostatic force, received curtain 5 is collected, and at motor 14, send rolling under curtain roller 10 and rolling curtain roller 11 effects.Nylon 66 nanofiber diameter that obtain approximately 20 nanometers to 1 micron do not wait, wherein about 380 nanometers of average diameter.
Claims (6)
1. an electrostatic spinning apparatus for preparing nanofiber, this process units mainly comprises bubbler, HV generator, needle electrode, plate electrode, the spinning pond, liquid storage tank, liquid-feeding pump, drawing liquid pump, conduit, receive curtain, send the curtain roller, rolling curtain roller, driving motor forms, it is characterized in that: bubbler is connected with liquid-feeding pump by conduit at the bottom of being fixed on the spinning pond, liquid-feeding pump is connected with liquid storage tank simultaneously, there is outage at nearly wall place, bottom, spinning pond, by conduit, through drawing liquid pump, with liquid storage tank, be connected, needle electrode is that the some metal needles that are arranged on bottom, spinning pond form, and be connected with HV generator by wire, plate electrode is fixed on directly over the spinning pond and by wire and is connected with the earth, one reception curtain is arranged between spinning pond and plate electrode, receive curtain near plate electrode, and two ends are connected with rolling curtain roller with sending the curtain roller.
2. a kind of electrostatic spinning apparatus for preparing nanofiber as claimed in claim 1, it is characterized in that having introduced bubbler, this bubbler mainly is comprised of sparge pipe, pressure mouth and fixed screw, when solution enters in bubbler with suitable pressure and flow, can form the flower-shaped liquid film of loudspeaker at the bubbler top end.
3. a kind of electrostatic spinning apparatus for preparing nanofiber as claimed in claim 1, is characterized in that in bubbler having used pressure mouth, and this pressure mouth inclination angle scope is between the 0-90 degree, can guarantee the size of the flower-shaped liquid film of loudspeaker that produces and highly can regulate.
4. a kind of electrostatic spinning apparatus for preparing nanofiber as claimed in claim 1, is characterized in that needle electrode can be hollow needle, can be also solid needle.
5. a kind of electrostatic spinning apparatus for preparing nanofiber as claimed in claim 1, is characterized in that the spinning pond is that insulating materials is made.
6. a kind of electrostatic spinning apparatus for preparing nanofiber as claimed in claim 1, it is characterized in that nearly wall place, bottom, spinning pond is evenly distributed with 1-4 outage, outage is connected with liquid storage tank with drawing liquid pump through conduit, can be so that spinning solution does not detach in time the spinning pond and gets back to liquid storage tank and again participates in spinning process.
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| CN105483841A (en) * | 2015-12-31 | 2016-04-13 | 安徽省元琛环保科技有限公司 | Multi-nozzle circulating electrostatic spinning equipment and working method thereof |
| CN111763993A (en) * | 2020-06-05 | 2020-10-13 | 东南大学 | Electrostatic spinning device of concentric annular solid needle electrode |
| CN113862799A (en) * | 2021-11-03 | 2021-12-31 | 常州诺金科技有限公司 | Electrostatic spinning needle head and electrostatic spinning method using same |
| CN114214737A (en) * | 2021-12-16 | 2022-03-22 | 中北大学 | Electrostatic spinning equipment |
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| JP2013209783A (en) * | 2012-03-30 | 2013-10-10 | Gunze Ltd | Manufacturing method of ultra fine fiber non-woven fabric and electric field spinning device |
| CN203668563U (en) * | 2013-10-11 | 2014-06-25 | 天津工业大学 | Electrostatic spinning device for preparing nano-fiber |
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| JP2013209783A (en) * | 2012-03-30 | 2013-10-10 | Gunze Ltd | Manufacturing method of ultra fine fiber non-woven fabric and electric field spinning device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111763993A (en) * | 2020-06-05 | 2020-10-13 | 东南大学 | Electrostatic spinning device of concentric annular solid needle electrode |
| CN113862799A (en) * | 2021-11-03 | 2021-12-31 | 常州诺金科技有限公司 | Electrostatic spinning needle head and electrostatic spinning method using same |
| CN114214737A (en) * | 2021-12-16 | 2022-03-22 | 中北大学 | Electrostatic spinning equipment |
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| CN103484954B (en) | 2016-05-18 |
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