CN102978719A - Vacuum electro-spinning device - Google Patents
Vacuum electro-spinning device Download PDFInfo
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- CN102978719A CN102978719A CN2012105643037A CN201210564303A CN102978719A CN 102978719 A CN102978719 A CN 102978719A CN 2012105643037 A CN2012105643037 A CN 2012105643037A CN 201210564303 A CN201210564303 A CN 201210564303A CN 102978719 A CN102978719 A CN 102978719A
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Abstract
The invention provides a controllable electro-spinning direct-writing device, in particular a vacuum electro-spinning device for remote direct writing of micro-nanofiber/fiber membranes, and relates to a spinning device. The vacuum electro-spinning device is provided with a vacuum cavity, a spray head, a collection plate, a liquid supply guide pipe, a liquid supply device, a high-voltage power supply, a vacuum pump, an air guide pipe, an air pressure meter, a lifting mechanism, an XYZ three-dimensional motion platform and a controller, wherein the XYZ three-dimensional motion platform, the spray head and the collection plate are arranged in the vacuum cavity; the spray head is mounted on a Z-axis bracket of the XYZ three-dimensional motion platform; the collection plate is arranged on an XY horizontal motion platform of the XYZ three-dimensional motion platform; an anode of the high-voltage power supply is connected with the spray head; a cathode of the high-voltage power supply is connected with the collection plate and is grounded; and the controller is connected with the high-voltage power supply, the XYZ three-dimensional motion platform, the vacuum pump and the air pressure meter respectively.
Description
Technical field
The present invention relates to a kind of electrostatic spinning apparatus, particularly relate at a distance a kind of vacuum electric spinning equipment of electrospinning direct-writing micro nanometer fiber/tunica fibrosa structure.
Background technology
Nanofiber is because its very high specific area and superior mechanics, the performance such as optics and electricity, be widely used in national defence, medicine, the numerous areas such as chemical industry and electronics, controlled, prepare as required the micro nanometer fiber/tunica fibrosa with specific pattern and spread pattern, at bioengineered tissue, micro-nano device, the fields such as flexible electronic also have widely application potential, and electrostatic spinning technique to have a cost low as a kind of, technique is simple, raw material sources extensively wait one of effective technology of the preparation nanofiber of many merits/tunica fibrosa structure more and more to receive the concern of domestic and international researcher.But the electrospinning process is owing to be subject to the impact of many factors, the polymer jet is deposited multiple wild effect, the accurate location deposition and the fiber alignment mode that are difficult to realize micro nanometer fiber are controlled, therefore, realize that the controlled orderly deposition of electrospinning micro-nano structure becomes a hot issue of current electrospinning investigative technique gradually.
Be widely used at present the controlled orderly micro/nano fiber structure of preparation and mainly adopt specific fiber collecting device, such as cylindrical collector, parallel-plate collector etc., but utilize the micro nanometer fiber of this method acquisition owing to be subject to the restriction of collector shape, depositional pattern is difficult to change, the fiber distribution is uncontrollable, particularly can't realize the controllable deposition of single micro nanometer fiber.(the Ying Yang such as Yang, Zhidong Jia, Lei Hou etal.IEEE Transactions on Dielectrics and Electrical Insulation, Vol.15 (1): 269-276) nozzle is positioned over insulation circular sleeve central authorities and carries out the preparation of micro nanometer fiber, experiment finds that the unstable whip that adopts this method can reduce jet is moving, limit the range of deposition of micro nanometer fiber on collecting board, but can't realize the effective control to the fiber laydown scope.
(the Sun D.H. such as Sun, Chang C., LiS., etal.Nano.Lett., 2006vol.6, pp.839-842) near field electrospinning direct-writing technology has been proposed, (0.5 ~ 3mm) makes the spinning jet just be deposited on the collecting board before the stage entering disordered motion to the collecting board distance by shortening shower nozzle, realized the deposition of single nanofiber, cooperate simultaneously the motion of collecting board can prepare the micro/nano fiber structure of different deposit tracks, but this method has reduced the time of nanofiber spatial movement and solvent evaporates owing to the distance that has shortened between shower nozzle and the collecting board, is unfavorable for the preparation of even fiber.
Summary of the invention
The object of the present invention is to provide a kind of controlled electrospinning direct-writing device, particularly a kind of vacuum electric spinning equipment of remote directly writing micro-nano rice fibre/fibre film.
The present invention is provided with vacuum chamber, shower nozzle, collecting board, supplies fluid catheter, liquid feed device, high voltage source, vavuum pump, wireway, air gauge, elevating mechanism, XYZ three-dimensional motion platform and controller; Described XYZ three-dimensional motion platform, shower nozzle, collecting board place vacuum chamber inner, and shower nozzle is loaded on the Z axis support of XYZ three-dimensional motion platform; Collecting board places on the XY horizontal movement platform of XYZ three-dimensional motion platform; High-voltage power cathode and shower nozzle join, and negative pole and collecting board join and ground connection; Controller is connected with air gauge with high voltage source, XYZ three-dimensional motion platform, vavuum pump respectively.
Described shower nozzle to the distance of collecting board can be 10 ~ 500mm.
The voltage magnitude of described high voltage source can be adjusted at 0 ~ 20kV.
Atmospheric pressure value in the described vacuum chamber can be adjusted at 0 ~ 0.1MPa.
The XY horizontal movement platform movement speed of described XYZ three-dimensional motion platform can be 0 ~ 1.5m/s, and displacement resolution can be 0.5nm, and acceleration can be 5g; XYZ three-dimensional motion platform can be 0 ~ 500mm in the position adjustments scope of Z-direction.
The feed flow flow-control of described liquid feed device is at 0 ~ 500 μ L/h.
The basic principle of vacuum electric spinning equipment is the solution that certain flow is provided for the electrospinning shower nozzle by liquid feed device; Deformation occurs and produces jet in solution under the high voltage electric field effect, jet is moving through a series of whips, solvent evaporates also finally obtains nanofiber at collecting board.Because the raising of the vacuum in the vacuum chamber can prolong the straight-line distance of jet, improve the stability of electrospinning jet, therefore, realize control to the nanofiber range of deposition thereby can regulate vacuum in the vacuum chamber by vavuum pump and air gauge.When the vacuum in the vacuum chamber to up to a certain degree the time, the unstable whip of spinning jet is moving can be suppressed fully, this has just realized stable injection of straight line of the sub-thread jet of long distance.Meanwhile, by the control to collecting board position and movement locus, can realize the preparation of the patterning micro nanometer fiber structure that width is controlled.Shower nozzle change by the elevating movement at XYZ three-dimensional motion platform Z axis and collecting board between distance, in order to satisfy the requirement of different technology conditions.Controller can monitor and control the state of liquid feed device, XYZ three-dimensional motion platform, vavuum pump, barometer and high voltage source simultaneously.
Compare with existing electric spinning equipment, outstanding advantages of the present invention is:
1) long apart from the electrospinning direct-writing micro nano structure.Mode by gas clean-up strengthens orderly controllable deposition and the accurate location that jet stability is realized remote single fiber and tunica fibrosa.
2) nanofiber, tunica fibrosa range of deposition are controlled.Just control the straight-line length of electrospinning jet by the vacuum that changes in the vacuum chamber, and cooperate the XY in-plane motion realization nanofiber of collecting board, the control of tunica fibrosa range of deposition.
3) long stable distance jet also has preferably advantage at the three-dimensional micro-nano structure manufacture view with larger height change.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Fig. 2 is jet unsteady motion schematic diagram under the different vacuums in the embodiment of the invention.In Fig. 2, a is air pressure 0.1MPa, and b is air pressure 0.08MPa, and c is air pressure 0.06MPa, and d is air pressure 0.04MPa.
The specific embodiment
Referring to Fig. 1, the embodiment of the invention is provided with liquid feed device 1, supplies fluid catheter 2, vacuum chamber 3, shower nozzle 4, collecting board 5, XYZ three-dimensional motion platform 6, wireway 7, vavuum pump 8, air gauge 9, high voltage source 10 and controller 11; Described liquid feed device 1 is by linking to each other with shower nozzle 4 for fluid catheter 2, shower nozzle 4 places on the Z axis support of XYZ three-dimensional motion platform 6, the positive pole of high voltage source 10 and shower nozzle 4 join, negative pole and collecting board 5 join and ground connection, collecting board 5 places on the XY motion platform of XYZ three-dimensional motion platform 6, shower nozzle 4, collecting board 5 and XYZ three-dimensional motion platform 6 place vacuum chamber 3 inside, vavuum pump 8, barometer 9 links to each other with vacuum chamber 3 by wireway 7 respectively, controller 11 respectively with liquid feed device 1, XYZ three-dimensional motion platform 6, vavuum pump 8, barometer 9 links to each other with the control end of high voltage source 10.
During work, at first open vavuum pump 8, by bleeding to regulate the vacuum of vacuum chamber 3 inside, make the size of vacuum meet the electrospinning requirement, then open liquid feed device 1 and high voltage source 10, solution forms the jet of Taylor cone and generation sustained firing at shower nozzle 4 under the effect of high voltage electric field; Jet stretches and solvent evaporates through electric field, finally forms nanofiber at collecting board 5.By the control to the movement locus of XYZ three-dimensional motion platform 6, can realize at collecting board 5 preparation of the patterning micro/nano fiber structure that width are controlled.
Fig. 2 is the jet motion schematic diagram under the different vacuums in the present embodiment.Wherein solution adopts PEO solution, and the voltage of high voltage source 10 is 7kV, and shower nozzle 4 is 12cm apart from the height of collecting board 5, and the vacuum chamber ambient pressure is 1 standard atmospheric pressure (0.1MPa).Raising (absolute gas pressure intensity is respectively 0.1MPa, 0.08MPa, 0.06MPa, 0.04MPa) along with vacuum chamber 3 interior vacuums, the stability line jet of spinning jet 12 is elongated gradually, unstable whip is moving suppressed gradually, therefore the tunica fibrosa width that is deposited on the collecting board reduces gradually, so that the tunica fibrosa width of directly writing is controlled.As the absolute gas pressure intensity 0.04MPa of the vacuum arrival-0.06MPa(of vacuum chamber 3) time, the unstable whip of spinning jet 12 is moving to be suppressed fully, realized stable injection of straight line of the sub-thread jet of long distance, can realize directly writing at a distance single nanofibrous structures pattern this moment at collecting board.
Claims (7)
1. a vacuum electric spinning equipment is characterized in that being provided with vacuum chamber, shower nozzle, collecting board, supplies fluid catheter, liquid feed device, high voltage source, vavuum pump, wireway, air gauge, elevating mechanism, XYZ three-dimensional motion platform and controller; Described XYZ three-dimensional motion platform, shower nozzle, collecting board place vacuum chamber inner, and shower nozzle is loaded on the Z axis support of XYZ three-dimensional motion platform; Collecting board places on the XY horizontal movement platform of XYZ three-dimensional motion platform; High-voltage power cathode and shower nozzle join, and negative pole and collecting board join and ground connection; Controller is connected with air gauge with high voltage source, XYZ three-dimensional motion platform, vavuum pump respectively.
2. a kind of vacuum electric spinning equipment as claimed in claim 1 is characterized in that described shower nozzle to the distance of collecting board is 10 ~ 500mm.
3. a kind of vacuum electric spinning equipment as claimed in claim 1, the voltage magnitude that it is characterized in that described high voltage source is 0 ~ 20kV.
4. a kind of vacuum electric spinning equipment as claimed in claim 1 is characterized in that the atmospheric pressure value in the described vacuum chamber is 0 ~ 0.1MPa.
5. a kind of vacuum electric spinning equipment as claimed in claim 1 is characterized in that the XY horizontal movement platform movement speed of described XYZ three-dimensional motion platform is 0 ~ 1.5m/s, and displacement resolution is 0.5nm, and acceleration is 5g.
6. a kind of vacuum electric spinning equipment as claimed in claim 1 is characterized in that described XYZ three-dimensional motion platform is 0 ~ 500mm in the position adjustments scope of Z-direction.
7. a kind of vacuum electric spinning equipment as claimed in claim 1 is characterized in that the feed flow flow-control of described liquid feed device is at 0 ~ 500 μ L/h.
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| CN201210564303.7A CN102978719B (en) | 2012-12-21 | 2012-12-21 | Vacuum electro-spinning device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104014884A (en) * | 2014-06-05 | 2014-09-03 | 厦门大学 | Micro-fine wire electrical discharge machining device generating electrode wire based on electrostatic spinning |
| CN104085852A (en) * | 2014-07-10 | 2014-10-08 | 厦门大学 | Device and method for preparing multi-ring micro-nanofiber resonant cavity |
| CN105586645A (en) * | 2016-03-16 | 2016-05-18 | 北京化工大学 | Multifunctional vacuum spinning device |
| CN105730006A (en) * | 2016-02-25 | 2016-07-06 | 东南大学 | Multifunctional micro-machining platform based on electro-hydrodynamics |
| CN105755556A (en) * | 2016-04-26 | 2016-07-13 | 刘向文 | Ring-type electrostatic spinning device |
| CN106927452A (en) * | 2017-04-14 | 2017-07-07 | 厦门大学 | A kind of laser-induced deposition manufactures the device of patterned Graphene |
| CN107541798A (en) * | 2017-10-17 | 2018-01-05 | 北京化工大学 | A kind of device that electrostatic influence can be eliminated for electrospinning direct-writing |
| CN108118447A (en) * | 2018-02-02 | 2018-06-05 | 广东工业大学 | A kind of Tissue Culture Plate with polymer fiber and preparation method thereof |
| WO2022198770A1 (en) * | 2021-03-25 | 2022-09-29 | 苏州大学 | Electrospinning apparatus |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014884A (en) * | 2014-06-05 | 2014-09-03 | 厦门大学 | Micro-fine wire electrical discharge machining device generating electrode wire based on electrostatic spinning |
| CN104085852A (en) * | 2014-07-10 | 2014-10-08 | 厦门大学 | Device and method for preparing multi-ring micro-nanofiber resonant cavity |
| CN104085852B (en) * | 2014-07-10 | 2015-12-02 | 厦门大学 | A kind of many rings micro-nano fiber resonator preparation facilities and preparation method thereof |
| CN105730006A (en) * | 2016-02-25 | 2016-07-06 | 东南大学 | Multifunctional micro-machining platform based on electro-hydrodynamics |
| CN105586645A (en) * | 2016-03-16 | 2016-05-18 | 北京化工大学 | Multifunctional vacuum spinning device |
| CN105755556B (en) * | 2016-04-26 | 2019-06-11 | 刘向文 | A kind of ring type electrostatic spinning apparatus |
| CN105755556A (en) * | 2016-04-26 | 2016-07-13 | 刘向文 | Ring-type electrostatic spinning device |
| CN106927452A (en) * | 2017-04-14 | 2017-07-07 | 厦门大学 | A kind of laser-induced deposition manufactures the device of patterned Graphene |
| CN106927452B (en) * | 2017-04-14 | 2018-11-13 | 厦门大学 | A kind of device of laser-induced deposition manufacture patterned Graphene |
| CN107541798A (en) * | 2017-10-17 | 2018-01-05 | 北京化工大学 | A kind of device that electrostatic influence can be eliminated for electrospinning direct-writing |
| CN107541798B (en) * | 2017-10-17 | 2023-05-26 | 北京化工大学 | Device for eliminating electrostatic influence in electrospinning direct writing |
| CN108118447A (en) * | 2018-02-02 | 2018-06-05 | 广东工业大学 | A kind of Tissue Culture Plate with polymer fiber and preparation method thereof |
| WO2022198770A1 (en) * | 2021-03-25 | 2022-09-29 | 苏州大学 | Electrospinning apparatus |
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