CN102978719B - Vacuum electro-spinning device - Google Patents
Vacuum electro-spinning device Download PDFInfo
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- CN102978719B CN102978719B CN201210564303.7A CN201210564303A CN102978719B CN 102978719 B CN102978719 B CN 102978719B CN 201210564303 A CN201210564303 A CN 201210564303A CN 102978719 B CN102978719 B CN 102978719B
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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 relating to can a kind of vacuum electric spinning equipment of electrospinning direct-writing micro nanometer fiber/fiber membrane structure at a distance.
Background technology
Nanofiber is due to 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, preparation has the micro nanometer fiber/tunica fibrosa of specific pattern and spread pattern as required, at bioengineered tissue, micro-nano device, the fields such as flexible electronic also have a wide range of applications potentiality, and electrostatic spinning technique to have cost as one low, technique is simple, raw material sources extensively wait one of most effective technology preparing nanofiber/fiber membrane structure of many merits more and more to receive the concern of domestic and international researcher.But electrospinning process is owing to being subject to the impact of many factors, polymer jet deposits multiple wild effect, the accurate pin deposition and the fiber alignment mode that are difficult to realize micro nanometer fiber control, therefore, the controlled orderly deposition realizing electrospinning micro-nano structure becomes a hot issue of current electrospinning investigative technique gradually.
Be widely used in the controlled orderly micro/nano fiber structure of preparation at present and mainly adopt specific fiber collector, as cylindrical collector, parallel-plate collector etc., but the micro nanometer fiber that profit obtains in this way is owing to being subject to the restriction of collector shape, depositional pattern is difficult to change, fiber distribution is uncontrollable, particularly cannot 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, nozzle is positioned over preparation that insulation circular sleeve central authorities carry out micro nanometer fiber Vol.15 (1): 269-276), experiment finds to adopt the unstable whip that can reduce jet in this way and moves, limit the range of deposition of micro nanometer fiber on collecting board, but the effective control to fiber laydown scope cannot be realized.
(the Sun D.H. such as Sun, Chang C., LiS., etal.Nano.Lett., 2006vol.6, pp.839-842) near field electrospinning direct-writing technology is proposed, to collecting board distance (0.5 ~ 3mm), spinning jet was just deposited on collecting board by shortening shower nozzle before entering the disordered motion stage, achieve the deposition of single nanofiber, coordinate the motion of collecting board can prepare the micro/nano fiber structure of different deposit track simultaneously, but this method is owing to shortening the distance between shower nozzle and collecting board, reduce the time of nanofiber spatial movement and solvent evaporates, be 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 movement platform and controller; Described XYZ three-dimensional movement platform, shower nozzle, collecting board are placed in vacuum chamber, and shower nozzle is loaded on the Z axis support of XYZ three-dimensional movement platform; Collecting board is placed on the XY horizontal movement platform of XYZ three-dimensional movement platform; High-voltage power cathode connects with shower nozzle, and negative pole connects with collecting board and ground connection; Controller is connected with air gauge with high voltage source, XYZ three-dimensional movement platform, vavuum pump respectively.
Described shower nozzle can be 10 ~ 500mm to the distance of collecting board.
The voltage magnitude of described high voltage source can adjust at 0 ~ 20kV.
Atmospheric pressure value in described vacuum chamber can adjust at 0 ~ 0.1MPa.
The XY horizontal movement platform movement speed of described XYZ three-dimensional movement platform can be 0 ~ 1.5m/s, and displacement resolution can be 0.5nm, and acceleration can be 5g; XYZ three-dimensional movement 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 general principle of vacuum electric spinning equipment is for electrospinning spinnerets provides the solution of certain flow by liquid feed device; There is deformation and produce jet in solution, jet is dynamic through a series of whip, solvent evaporates finally obtain nanofiber on collecting board under high voltage electric field effect.Raising due to the vacuum in vacuum chamber can extend the distance of jet rectilinear motion, improve the stability of electrospinning jet, therefore, can regulate the vacuum in vacuum chamber thus the control realized nanofibres deposit scope by vavuum pump and air gauge.When the vacuum in vacuum chamber is to up to time to a certain degree, the unstable whip of spinning jet is dynamic can be totally constrained, and which achieves that the straight line of the single jet of long distance is stable to be sprayed.Meanwhile, by the control to collecting board position and movement locus, the preparation of the controlled patterning micro nanometer fiber structure of width can be realized.Shower nozzle by changing the distance between collecting board in the elevating movement of XYZ three-dimensional movement platform Z axis, in order to meet the requirement of different technology conditions.Controller can carry out monitor and forecast to the state of liquid feed device, XYZ three-dimensional movement platform, vavuum pump, barometer and high voltage source simultaneously.
Compared with existing electric spinning equipment, outstanding advantages of the present invention is:
1) long distance electrospinning direct-writing micro nano structure.Strengthen jet stability by the mode of gas clean-up realize the orderly controllable deposition of remote single fiber and tunica fibrosa and accurately locate.
2) nanofiber, tunica fibrosa range of deposition are controlled.Controlled the length of electrospinning jet rectilinear motion by the vacuum height changed in vacuum chamber, and coordinate the motion of the XY in-plane of collecting board to realize the control of nanofiber, tunica fibrosa range of deposition.
3) the three-dimensional micro-nano structure manufacture view that long stable distance jet has larger height change also has good advantage.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is jet unsteady motion schematic diagram under different vacuum in the embodiment of the present invention.In fig. 2, a is air pressure 0.1MPa, b be air pressure 0.08MPa, c be air pressure 0.06MPa, d is air pressure 0.04MPa.
Detailed description of the invention
See Fig. 1, the embodiment of the present invention is provided with liquid feed device 1, for fluid catheter 2, vacuum chamber 3, shower nozzle 4, collecting board 5, XYZ three-dimensional movement platform 6, wireway 7, vavuum pump 8, air gauge 9, high voltage source 10 and controller 11, described liquid feed device 1 is by being connected with shower nozzle 4 for fluid catheter 2, shower nozzle 4 is placed on the Z axis support of XYZ three-dimensional movement platform 6, the positive pole of high voltage source 10 connects with shower nozzle 4, negative pole connects with collecting board 5 and ground connection, collecting board 5 is placed on the XY motion platform of XYZ three-dimensional movement platform 6, shower nozzle 4, it is inner that collecting board 5 and XYZ three-dimensional movement platform 6 are placed in vacuum chamber 3, vavuum pump 8, barometer 9 is connected with vacuum chamber 3 respectively by wireway 7, controller 11 respectively with liquid feed device 1, XYZ three-dimensional movement platform 6, vavuum pump 8, barometer 9 is connected with the control end of high voltage source 10.
During work, first open vavuum pump 8, regulating the vacuum of vacuum chamber 3 inside by bleeding, making the size of vacuum meet electrospinning requirement, then open liquid feed device 1 and high voltage source 10, solution forms Taylor cone at shower nozzle 4 and produces the jet of sustained firing under the effect of high voltage electric field; Jet stretches and solvent evaporates through electric field, finally on collecting board 5, forms nanofiber.By the control of the movement locus to XYZ three-dimensional movement platform 6, the preparation of the controlled patterning micro/nano fiber structure of width can be realized on collecting board 5.
Fig. 2 is the jet motion schematic diagram in the present embodiment under different vacuum.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 vacuum chamber ambient pressure is 1 standard atmospheric pressure (0.1MPa).Along with the raising (absolute gas pressure is respectively 0.1MPa, 0.08MPa, 0.06MPa, 0.04MPa) of vacuum in vacuum chamber 3, the stability line jet of spinning jet 12 is elongated gradually, unstable whip is dynamic suppressed gradually, therefore the tunica fibrosa width be deposited on collecting board reduces gradually, makes the tunica fibrosa width directly write controlled.When the vacuum of vacuum chamber 3 arrives-0.06MPa(absolute gas pressure 0.04MPa) time, the unstable whip of spinning jet 12 is dynamic to be totally constrained, achieve the stable injection of straight line of the single jet of long distance, now can realize directly writing single nanofibrous structures pattern at a distance on collecting board.
Claims (1)
1. a vacuum electric spinning equipment, is characterized in that being provided with vacuum chamber, shower nozzle, collecting board, supplying fluid catheter, liquid feed device, high voltage source, vavuum pump, wireway, air gauge, elevating mechanism, XYZ three-dimensional movement platform and controller; Described XYZ three-dimensional movement platform, shower nozzle, collecting board are placed in vacuum chamber, and shower nozzle is loaded on the Z axis support of XYZ three-dimensional movement platform; Collecting board is placed on the XY horizontal movement platform of XYZ three-dimensional movement platform; High-voltage power cathode connects with shower nozzle, and negative pole connects with collecting board and ground connection; Controller is connected with air gauge with high voltage source, XYZ three-dimensional movement platform, vavuum pump respectively;
Described shower nozzle is 10 ~ 500mm to the distance of collecting board;
The voltage magnitude of described high voltage source is 0 ~ 20kV;
Atmospheric pressure value in described vacuum chamber is 0 ~ 0.1MPa;
The XY horizontal movement platform movement speed of described XYZ three-dimensional movement platform is 0 ~ 1.5m/s, and displacement resolution is 0.5nm, and acceleration is 5g;
Described XYZ three-dimensional movement platform is 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.
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| CN201210564303.7A CN102978719B (en) | 2012-12-21 | 2012-12-21 | Vacuum electro-spinning device |
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| CN201210564303.7A CN102978719B (en) | 2012-12-21 | 2012-12-21 | Vacuum electro-spinning device |
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| CN102978719A CN102978719A (en) | 2013-03-20 |
| CN102978719B true CN102978719B (en) | 2015-05-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104014884B (en) * | 2014-06-05 | 2016-01-27 | 厦门大学 | The fine electric spark wire electric discharge machine of wire electrode is generated based on electrostatic spinning |
| 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 |
| CN105586645B (en) * | 2016-03-16 | 2017-12-29 | 北京化工大学 | A kind of multifunctional vacuum device for spinning |
| CN105755556B (en) * | 2016-04-26 | 2019-06-11 | 刘向文 | A kind of ring type electrostatic spinning apparatus |
| CN106927452B (en) * | 2017-04-14 | 2018-11-13 | 厦门大学 | A kind of device of laser-induced deposition manufacture patterned Graphene |
| CN107541798B (en) * | 2017-10-17 | 2023-05-26 | 北京化工大学 | Device for eliminating electrostatic influence in electrospinning direct writing |
| CN108118447B (en) * | 2018-02-02 | 2020-06-09 | 广东工业大学 | Cell culture plate with polymer fibers and preparation method thereof |
| CN112899795A (en) * | 2021-03-25 | 2021-06-04 | 苏州大学 | Electrostatic spinning device |
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| US7326043B2 (en) * | 2004-06-29 | 2008-02-05 | Cornell Research Foundation, Inc. | Apparatus and method for elevated temperature electrospinning |
| US20080296808A1 (en) * | 2004-06-29 | 2008-12-04 | Yong Lak Joo | Apparatus and Method for Producing Electrospun Fibers |
| CN100535205C (en) * | 2006-03-06 | 2009-09-02 | 东华大学 | Gas layer propulsion electrostatic spinning apparatus and industrial application thereof |
| CN2918457Y (en) * | 2006-07-10 | 2007-07-04 | 东华大学 | Atmosphere controllable electrostatic spinning chamber |
| US20090321997A1 (en) * | 2007-03-05 | 2009-12-31 | The University Of Akron | Process for controlling the manufacture of electrospun fiber morphology |
| CN101844406B (en) * | 2010-04-23 | 2012-08-15 | 厦门大学 | Device and method for manufacturing micro-nano porous structure |
| CN102586903B (en) * | 2012-01-12 | 2014-08-13 | 广州迈普再生医学科技有限公司 | Electric spinning machine |
| CN102586902B (en) * | 2012-01-12 | 2015-04-22 | 广州迈普再生医学科技有限公司 | Negative pressure electrostatic spinning method and device |
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Address after: 363000 the southern tip of Xiamen University Zhangzhou campus, Zhangzhou, Fujian Patentee after: XIAMEN University Address before: Xiamen City, Fujian Province, 361005 South Siming Road No. 422 Patentee before: XIAMEN University |