CN103060932A - Drum electrostatic spinning device - Google Patents
Drum electrostatic spinning device Download PDFInfo
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- CN103060932A CN103060932A CN2013100136420A CN201310013642A CN103060932A CN 103060932 A CN103060932 A CN 103060932A CN 2013100136420 A CN2013100136420 A CN 2013100136420A CN 201310013642 A CN201310013642 A CN 201310013642A CN 103060932 A CN103060932 A CN 103060932A
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Abstract
The invention discloses a drum electrostatic spinning device which comprises a polymer solution tank, a delivery pipe, a delivery pump, a drum system, a liquid trough, a high-voltage electrostatic generator, a collection system and a hot air system. The polymer solution tank, the delivery pump and the liquid trough are connected in sequence through a pipeline. The drum system and the high-voltage electrostatic generator and the collection system are connected in sequence. The drum system is fixed right above the liquid trough. The hot air system is disposed on the left of the collection system. The drum system comprises a drum and a rotary shaft which is disposed in the center of the drum. The drum is connected with an anode of the high-voltage electrostatic generator. The collection system is disposed above the drum and is connected to a cathode of the high-voltage electrostatic generator through a high-voltage power cord. The drum electrostatic spinning device in the abandoned needle structure and the drum structure changes the basic operating mode of a spinning device and allows for large-scale production of nanofiber polymer dressing and various nanofiber films.
Description
Technical field
The invention belongs to the electrospinning device technical field, particularly a kind of rotary drum electrostatic spinning apparatus.
Background technology
Nanofiber Manufacture and application technology is the focus in frontier science and technology field in recent years.In fields such as information, biology, environment, the impact that the nanofiber technology is brought to industry is very large.Along with the development of nanometer technology, electrostatic spinning technique (abbreviation electrospinning) is paid close attention in the nano materials research field day by day widely as a kind of preparation method of effective, practical nanofiber.As far back as 1934, Formhals invented the device that produces high molecular superfine fiber with electrostatic field.But, until in recent years along with the development of modern science and technology and the rise of nanometer technology, electrostatic spinning technique just obtains more deep research and has obtained great development.Many research groups produce very big interest to electrostatic spinning, and have reported a series of thus organic polymer fibers of a technology preparation.Nanofiber by the electrostatic spinning process preparation has the nanoscale structures close with human tissue, is expected to become desirable tissue bionic material.
At present, existing nearly hundred kinds of natural and artificial macromolecular materials successfully are prepared into nanofiber by the electrospinning method.The electrospinning method generally has dual mode, and the one, the solution electrospinning is carried out electrostatic spinning after namely selecting suitable solvent polymer dissolution to be become to have the solution of finite concentration, viscosity again, and another kind is the melting electrospinning, namely directly will carry out electrospinning behind the polymer melting.
Traditional electrostatic spinning apparatus mainly is comprised of three parts: high voltage source, shower nozzle (metal capillary syringe needle) and collection screen; High voltage source is used dc source usually; Shower nozzle can horizontal or vertically be placed, and is connected with syringe pump so that feed flow quantitatively; Receiving screen can be metallic plate, net or cylinder etc., can carry out as the case may be particular design.Under the effect of highfield, the polymer solution that is transported to the spinning head top is polarized; At this moment, polymer solution repels under three kinds of power effects at capillary end formation Taylor cone mutually at Coulomb force, surface tension and same sex electric charge, the power of repelling each other when Coulomb force and electric charge is during greater than surface tension, polymer solution will overcome surface tension and the viscous force and form the injection thread of itself, and the very fast volatilization of solvent, polymer cure also are collected on the receiving screen.Use the electrostatic spinning apparatus of this single spraying head and can effectively prepare various uniform nanofibers, but preparation efficiency is lower, quantity for spray generally is tens microlitre per minutes, does not possess the application prospect of batch production nanofiber.Therefore, develop the key issue that efficient multiple injector electrostatic spinning device has become the practical application of restriction nanofiber.
Multi-nozzle electrospinning device helps to increase substantially spinning efficiency, reduces the nanofiber manufacturing cost and promotes its practical application and the marketization.But, in many ejecting devices, influence each other between the shower nozzle, the residing electric field environment difference of each shower nozzle causes the spraying situation of each shower nozzle different, the thread surface of ejecting is carried like charges and is mutually repelled, disturbs very serious, is difficult to obtain uniform nano-fiber film.Have in the market commercial miniature instrument based on the needle-based design, its spinning efficiency is extremely low, generally can only reach several milliliters of processing capacities hourly, does not basically possess the prospect of large-scale production preparation.For improving one's methods that electrospinning device efficient improves, a lot of correlative studys mainly are to adopt the mode that increases syringe needle to realize that its effect is unsatisfactory.
Summary of the invention
The shortcoming that the object of the invention is to overcome prior art provides a kind of rotary drum electrostatic spinning apparatus with not enough.
Purpose of the present invention is achieved through the following technical solutions: a kind of rotary drum electrostatic spinning apparatus, comprise Polymer Solution storage tank, carrier pipe, delivery pump, rotor system, reservoir, HV generator, gathering system and hot-air system, described Polymer Solution storage tank, delivery pump and reservoir connect successively by carrier pipe, rotor system, HV generator and gathering system connect successively, rotor system is fixed on directly over the reservoir, and hot-air system is arranged at the left side of gathering system;
Described Polymer Solution storage tank is preferably semicircle column type rustless steel container;
The length of described semicircle column type rustless steel container is preferably 150～1500mm, and radius is preferably 20～500mm;
Described carrier pipe is preferably PTFE tube;
Described delivery pump is preferably by ground power line ground connection;
Described rotor system comprises rotary drum and rotating shaft, and rotating shaft is arranged at the centre of rotary drum, and rotary drum is connected with the positive pole of described HV generator; Rotary drum is driven with different rotating speeds around the rotating shaft rotation, for delivery of Polymer Solution by variable-frequency motor;
Described rotary drum is preferably cylindrical body of stainless steel;
The diameter of described cylindrical body of stainless steel is preferably 15～450mm, and length is preferably 150～1500mm;
The power of described variable-frequency motor is preferably 100～1000W, and rotating speed is preferably 20～200rpm;
The outer surface of described rotary drum has protrusion of surface, and it is conical that protrusion of surface is, and bores high 2～15mm, and it is regularly arranged that pyramidal projections is equilateral triangle, and the interval equates in twos, and spacing is 5～50mm; The protrusion of surface of rotary drum is immersed in the reservoir;
The protrusion of surface of described rotary drum is preferably stainless steel material;
Described reservoir is preferably the curved stainless steel container;
Described HV generator preferably adopts numeral to show DC high-voltage power supply;
Described numeral shows that the input voltage of DC high-voltage power supply is preferably 220VAC, 50Hz, and output voltage is preferably 0～30KV, and output current is preferably 1mA, and when overcurrent and short circuit, system protects automatically;
Described gathering system comprises negative plate, negative plate rotating shaft and negative plate overlay film, and the two ends of negative plate are fixed in the negative plate rotating shaft, and negative plate and negative plate rotating shaft are coated in the negative plate overlay film; The negative plate rotating shaft is connected with variable-frequency motor, and negative plate is arranged at the top of rotary drum, is connected to the negative pole of HV generator by high-voltage power-line;
The width of described negative plate is consistent with the diameter of rotary drum;
The distance of described negative plate and rotary drum is preferably 100～500mm;
Described negative plate is preferably stainless sheet steel, and the length of negative plate is preferably 300～500mm;
Described negative plate overlay film is preferably paper film or plastic sheeting;
Preferably, described gathering system is provided with arrangement for adjusting height;
Described arrangement for adjusting height is the threaded adjusting structure;
Described hot-air system comprises fan and heater, and fan is arranged at the left side of heater, and heater is arranged at the left side of negative plate;
Described fan is by ground power line ground connection, and the power of fan is preferably 5～15W;
Described heater is by ground power line ground connection, and power is preferably 5～50W;
The operation principle of described rotary drum electrostatic spinning apparatus: will be pumped into reservoir by delivery pump for the macromolecule material solution of spinning nanofiber, rotary drum adheres to Polymer Solution in rotary course, along with the protrusion of surface of rotary drum rotational conveyance to rotary drum, polarization by HV generator, last under the electric field force effect of the high voltage electric field between rotary drum and the negative plate, top in the protrusion of surface of rotary drum taper forms " Taylor cone ", and finally overcome gravity and capillary constraint, form the macromolecule jet of the moving state of whip, fly to negative plate; In this process, with hot-air system generation heat exchange, impel solvent to volatilize fast, finally form solid-state fiber fines and be deposited on the gathering system surface, form nano fibrous membrane.
The present invention has following advantage and effect with respect to prior art: the present invention abandons the needle-based structure, has changed the basic working modes of device for spinning.The present invention adopts the rotary drum structure, polarization by HV generator, last under the electric field force effect of the high voltage electric field between rotary drum and the negative plate, top in the protrusion of surface of rotary drum taper forms " Taylor cone ", and finally overcome gravity and capillary constraint, form whip and move the macromolecule jet of state and prepare nano fibrous membrane.Equipment of the present invention is simple, and easy operating can realize that scale prepares the dressing of nanofiber macromolecule and various nano fibrous membrane.
Description of drawings
Fig. 1 is the structural representation of the rotary drum electrostatic spinning apparatus of embodiment 1, wherein: the protrusion of surface of 1-Polymer Solution storage tank, 2-carrier pipe, 3-fan, 4-heater, the rotating shaft of 5-negative plate, 6-negative plate, 7-negative plate overlay film, 8-Polymer Solution, 9-delivery pump, 10-rotary drum, 11-rotating shaft, 12 reservoirs, 13-rotary drum, 14-HV generator positive pole, 15-HV generator, 16-HV generator negative pole, 17-variable-frequency motor.
The structural representation of Fig. 2 rotary drum, wherein: a is the drum surface schematic diagram, b is the sectional view of rotary drum.
The structural representation of Fig. 3 negative plate.
The schematic diagram that Fig. 4 rotary drum cooperates with reservoir, wherein: a is rotary drum, b is reservoir.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited to this.
As shown in Figure 1, a kind of rotary drum electrostatic spinning apparatus, comprise Polymer Solution storage tank 1, carrier pipe 2, delivery pump 9, rotor system, reservoir 12, HV generator 15, gathering system and hot-air system, described Polymer Solution storage tank 1, delivery pump 9 and reservoir 12 connect successively by carrier pipe 2, rotor system, HV generator 15 and gathering system connect successively, rotor system is fixed on directly over the reservoir, and hot-air system is arranged at the left side of gathering system;
Polymer Solution storage tank 1 is semicircle column type rustless steel container; The length of semicircle column type rustless steel container is 1500mm, and radius is 500mm;
Rotor system comprises rotary drum 13 and rotating shaft 11, and rotating shaft 11 is arranged at the centre of rotary drum 13, and rotary drum 13 is connected with the positive pole 14 of HV generator; Rotary drum 13 is driven with different rotating speeds around the rotating shaft rotation by variable-frequency motor 17;
The power of variable-frequency motor 17 is 100～1000W, and rotating speed is 20～200rpm;
The outer surface of rotary drum 13 has protrusion of surface 10, and it is conical that protrusion of surface 10 is, and bores high 15mm, and it is regularly arranged that pyramidal projections is equilateral triangle, and the interval equates in twos, and spacing is 50mm; The protrusion of surface 10 of rotary drum is immersed in the reservoir 12;
The protrusion of surface 10 of rotary drum is stainless steel material;
Gathering system comprises negative plate 6, negative plate rotating shaft 5 and negative plate overlay film 7, and the two ends of negative plate 6 are fixed in negative plate rotating shaft 5, and negative plate 6 and negative plate rotating shaft 5 are coated in the negative plate overlay film 7; Negative plate rotating shaft 5 is connected with variable-frequency motor 17, and negative plate 6 is arranged at the top of rotary drum 13, is connected to the negative pole 16 of HV generator by high-voltage power-line;
The width of negative plate 6 is consistent with the diameter of rotary drum 13;
Negative plate 6 is 100～500mm with the distance of rotary drum 13;
Negative plate 6 is stainless sheet steel, and the length of negative plate 6 is 500mm;
Negative plate overlay film 7 is paper film;
Gathering system is provided with arrangement for adjusting height; Arrangement for adjusting height is the threaded adjusting structure;
Hot-air system comprises fan 3 and heater 4, and fan 3 is arranged at the left side of heater 4, and heater 4 is arranged at the left side of negative plate 6;
Use the rotary drum electrostatic spinning apparatus of embodiment 1 to prepare nano fibrous membrane:
Polymer Solution in the Polymer Solution storage tank is pumped in the reservoir by delivery pump, and the power of regulating successively variable-frequency motor is that the rotating speed of 100W, variable-frequency motor is that the output voltage of 20rpm, HV generator is that the distance of 10KV, negative plate and rotary drum is that the power of 100mm, fan is that the power of 5W, heater is 5W; Rotary drum adheres to Polymer Solution in rotary course, along with the protrusion of surface of rotary drum rotational conveyance to rotary drum, polarization by HV generator, last under the electric field force effect of the high voltage electric field between rotary drum and the negative plate, top in the protrusion of surface of rotary drum forms " Taylor cone ", and finally overcome gravity and capillary constraint, and form the macromolecule jet of the moving state of whip, fly to negative plate; In this process, with fan and heater generation heat exchange, impel solvent to volatilize fast, finally form solid-state fiber fines and be deposited on the gathering system surface, form nano fibrous membrane; The fibre length of nano fibrous membrane is 100～300 μ m, fibre diameter 10～50nm, film thickness 0.1～0.5mm.
Use the rotary drum electrostatic spinning apparatus of embodiment 1 to prepare nano fibrous membrane:
Polymer Solution in the Polymer Solution storage tank is pumped in the reservoir by delivery pump, and the power of regulating successively variable-frequency motor is that the rotating speed of 500W, variable-frequency motor is that the output voltage of 100rpm, HV generator is that the distance of 2KV, negative plate and rotary drum is that the power of 300mm, fan is that the power of 10W, heater is 20W; Rotary drum adheres to Polymer Solution in rotary course, along with the protrusion of surface of rotary drum rotational conveyance to rotary drum, polarization by HV generator, last under the electric field force effect of the high voltage electric field between rotary drum and the negative plate, top in the protrusion of surface of rotary drum forms " Taylor cone ", and finally overcome gravity and capillary constraint, and form the macromolecule jet of the moving state of whip, fly to negative plate; In this process, with fan and heater generation heat exchange, impel solvent to volatilize fast, finally form solid-state fiber fines and be deposited on the gathering system surface, form nano fibrous membrane; The fibre length of nano fibrous membrane is 100～500 μ m, fibre diameter 10～100nm, film thickness 0.1～1.0mm.
Use the rotary drum electrostatic spinning apparatus of embodiment 1 to prepare nano fibrous membrane:
Polymer Solution in the Polymer Solution storage tank is pumped in the reservoir by delivery pump, and the power of regulating successively variable-frequency motor is that the rotating speed of 1000W, variable-frequency motor is that the output voltage of 200rpm, HV generator is that the distance of 30KV, negative plate and rotary drum is that the power of 500mm, fan is that the power of 15W, heater is 50W; Rotary drum adheres to Polymer Solution in rotary course, along with the protrusion of surface of rotary drum rotational conveyance to rotary drum, polarization by HV generator, last under the electric field force effect of the high voltage electric field between rotary drum and the negative plate, top in the protrusion of surface of rotary drum forms " Taylor cone ", and finally overcome gravity and capillary constraint, and form the macromolecule jet of the moving state of whip, fly to negative plate; In this process, with fan and heater generation heat exchange, impel solvent to volatilize fast, finally form solid-state fiber fines and be deposited on the gathering system surface, form nano fibrous membrane; The fibre length of nano fibrous membrane is 50～500 μ m, fibre diameter 10～100nm, film thickness 0.1～1.0mm.
Above-described embodiment is the better embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. rotary drum electrostatic spinning apparatus, it is characterized in that comprising Polymer Solution storage tank, carrier pipe, delivery pump, rotor system, reservoir, HV generator, gathering system and hot-air system, described Polymer Solution storage tank, delivery pump and reservoir connect successively by carrier pipe, rotor system, HV generator and gathering system connect successively, rotor system is fixed on directly over the reservoir, and hot-air system is arranged at the left side of gathering system;
Described rotor system comprises rotary drum and rotating shaft, and rotating shaft is arranged at the centre of rotary drum, and rotary drum is connected with the positive pole of described HV generator;
Described gathering system comprises negative plate, negative plate rotating shaft and negative plate overlay film, and the two ends of negative plate are fixed in the negative plate rotating shaft, and negative plate and negative plate rotating shaft are coated in the negative plate overlay film; Negative plate is arranged at the top of rotary drum, is connected to the negative pole of HV generator by high-voltage power-line;
Described hot-air system comprises fan and heater, and fan is arranged at the left side of heater, and heater is arranged at the left side of negative plate.
2. rotary drum electrostatic spinning apparatus according to claim 1, it is characterized in that: the outer surface of described rotary drum has protrusion of surface, and it is conical that protrusion of surface is, bore high 2～15mm, it is regularly arranged that pyramidal projections is equilateral triangle, and the interval equates in twos, and spacing is 5～50mm.
3. rotary drum electrostatic spinning apparatus according to claim 2, it is characterized in that: the protrusion of surface of described rotary drum is immersed in the reservoir, and rotary drum is driven with different rotating speeds around the rotating shaft rotation by variable-frequency motor.
4. rotary drum electrostatic spinning apparatus according to claim 2, it is characterized in that: described rotary drum is cylindrical body of stainless steel, the protrusion of surface of described rotary drum is stainless steel material.
5. rotary drum electrostatic spinning apparatus according to claim 4, it is characterized in that: the diameter of described cylindrical body of stainless steel is 15～450mm, length is 150～1500mm.
6. rotary drum electrostatic spinning apparatus according to claim 3, it is characterized in that: described variable-frequency motor is connected with the negative plate rotating shaft; The power of variable-frequency motor is 100～1000W, and rotating speed is 20～200rpm.
7. rotary drum electrostatic spinning apparatus according to claim 1, it is characterized in that: the width of described negative plate is consistent with the diameter of rotary drum; The distance of described negative plate and rotary drum is 100～500mm.
8. rotary drum electrostatic spinning apparatus according to claim 1, it is characterized in that: described negative plate is stainless sheet steel, the length of negative plate is 300～500mm; Described negative plate overlay film is paper film or plastic sheeting.
9. rotary drum electrostatic spinning apparatus according to claim 1, it is characterized in that: described reservoir is the curved stainless steel container; Described HV generator adopts numeral to show DC high-voltage power supply; Described Polymer Solution storage tank is semicircle column type rustless steel container.
10. rotary drum electrostatic spinning apparatus according to claim 1 is characterized in that: described fan is by ground power line ground connection, and the power of fan is 5～15W; Described heater is by ground power line ground connection, and power is 5～50W.
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| CN201310013642.0A CN103060932B (en) | 2013-01-14 | 2013-01-14 | Drum electrostatic spinning device |
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| CN201310013642.0A CN103060932B (en) | 2013-01-14 | 2013-01-14 | Drum electrostatic spinning device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103484956A (en) * | 2013-10-12 | 2014-01-01 | 厦门大学 | Electrospun nano-fiber air floatation delivery and collection device |
| CN104480640A (en) * | 2015-01-06 | 2015-04-01 | 江西先材纳米纤维科技有限公司 | Method and device for manufacturing nano fibers in air-blowing parallel surrounding steel wire electrostatic spinning mode |
| CN105133052A (en) * | 2015-08-31 | 2015-12-09 | 烟台森森环保科技有限公司 | Needle-free electrostatic spinning equipment |
| CN108517572A (en) * | 2018-06-15 | 2018-09-11 | 北京化工大学 | A kind of networking uniformly linear melt electrostatic spinning device and method |
| CN110219059A (en) * | 2019-06-14 | 2019-09-10 | 大连沃隆峰英鸿纳米科技有限公司 | A kind of prepare with scale production line of electrostatic spinning nano fiber |
| CN110273190A (en) * | 2018-07-19 | 2019-09-24 | 武汉纺织大学 | Based on the uniformly distributed mutliblade open electrospinning nozzle of annular |
| CN112430858A (en) * | 2020-11-11 | 2021-03-02 | 青岛大学 | Electrostatic spinning equipment |
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| CN107366029B (en) * | 2017-07-28 | 2019-09-10 | 浙江工业大学之江学院 | A kind of mass prepares the electrostatic spinning apparatus of nanofiber |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108517572A (en) * | 2018-06-15 | 2018-09-11 | 北京化工大学 | A kind of networking uniformly linear melt electrostatic spinning device and method |
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| CN110273190B (en) * | 2018-07-19 | 2021-10-08 | 武汉纺织大学 | Open electrospinning nozzle based on annular uniform distribution multiple blades |
| CN110273190A (en) * | 2018-07-19 | 2019-09-24 | 武汉纺织大学 | Based on the uniformly distributed mutliblade open electrospinning nozzle of annular |
| CN110219059B (en) * | 2019-06-14 | 2021-12-07 | 北京英鸿光大科技有限公司 | Large-scale preparation production line of electrostatic spinning nanofiber |
| CN110219059A (en) * | 2019-06-14 | 2019-09-10 | 大连沃隆峰英鸿纳米科技有限公司 | A kind of prepare with scale production line of electrostatic spinning nano fiber |
| CN112430858A (en) * | 2020-11-11 | 2021-03-02 | 青岛大学 | Electrostatic spinning equipment |
| CN112430858B (en) * | 2020-11-11 | 2022-06-24 | 上海胜启纳米科技中心 | Electrostatic spinning equipment |
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