CN103993369B - A kind of generating means of controlled waveform micro nanometer fiber - Google Patents
A kind of generating means of controlled waveform micro nanometer fiber Download PDFInfo
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- CN103993369B CN103993369B CN201410152403.8A CN201410152403A CN103993369B CN 103993369 B CN103993369 B CN 103993369B CN 201410152403 A CN201410152403 A CN 201410152403A CN 103993369 B CN103993369 B CN 103993369B
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- catcher
- injection pump
- generating means
- syringe
- micro nanometer
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Abstract
The present invention is the generating means of a kind of controlled waveform micro nanometer fiber.Including precise injection pump, precise injection pump feed mechanism guide rail, injector push-rod, syringe, electrostatic spinning nozzle, auxiliary electrode, controllable electric power, motion platform, catcher, high-voltage DC power supply, control system, power leading screw, the syringe of the present invention is arranged on precise injection pump, precise injection pump controls the solution feed rate inside syringe by syringe delivery device, electrostatic spinning nozzle is arranged on injector tip, for forming electrostatic spinning environment, catcher is installed on the moving platform, is used for collecting fiber and providing spinning environment.Motion platform provides movement velocity and the direction of collecting board near field direct write.Electric field between two auxiliary electrodes of the present invention is change, during spinning, jet stress aloft is also change, therefore the track of jet deposition also can and then change, and by the control of the output signal to controllable electric power, i.e. can obtain the control to deposit fiber form and size.
Description
Technical field
The present invention is the generating means of a kind of controlled waveform micro nanometer fiber, belongs to the generation of controlled waveform micro nanometer fiber
The innovative technology of device.
Background technology
Electrospinning Electrospinning is proposed in 1934 by Formhzls the earliest, and Taylor et al. was in 1964 subsequently
The deformation of electropolymer during electrostatic spinning is proposed this concept of taylor cone, until eighties of last century people's nineties open
Beginning extensive concern Electrospinning.Reneker et al. did about polymer solution jet in electrostatic spinning curved in 2000
Bent unstable research, mentions the producing cause of shape wave nanofiber in electrostatic spinning and is because the bending of electrostatic spinning not in literary composition
Stable.Yarin et al. is in the calendar year 2001 customized researchs such as modeling unstable to the jet during electrostatic spinning further.Han etc.
People bends the deposition of jet in 2007 during having done about electrostatic spinning, refer to utilize electrostatic spinning jet to bend in literary composition
Unstable deposition spiral nano-fibre and the method for shape wave (waveform) nanofiber.Han et al. continued have studied in 2008
The method utilizing the electrostatic spinning bending instability deposition vimentin filament such as spiral nano-fibre and triangular wave, and use mathematical model
Explain its Forming Mechanism.In the generation of vimentin filament, do not have much progress afterwards, all utilize far field electrostatic spinning
Bending instability produces vimentin filament.Electrostatic spinning nozzle, in 2013, is arranged on the mechanism of reciprocally swinging by sun et al.
On, catcher moves upward in the side being perpendicular to the shower nozzle direction of motion, thus proposes a kind of electrostatic spinning and generate waveform Nanowire
The method of dimension.The identical people in grandson road proposes near field electrospinning in 2006 first, and by the research near field electrospinning, jet is at multi-scenarios method
Factor under, also there will be waveform configuration fiber when falling on collecting board crystallization.But combine the generation of described electrospinning process to receive
Rice fiber is all uncontrollable.
MEMS increasingly seems extremely important in the development of the national economy, and closely bound up with our life,
Utilizing electrostatic spinning produce MEMS and dress electronics, flexible electronic product etc. becomes awfully hot door in recent years.Wherein
Waveform configuration nanofiber can be used for the structure of multiple MEMS, such as microcell antenna, acceleration transducer, displacement transducer, electricity
Appearance etc. has good utilization prospect.Meanwhile, inside stretchable flexible electronic product, vimentin filament also has to be applied greatly
Prospect.
But, inside these utilization prospects, form and size to waveform nanofiber have certain requirement, on
The production method stating the waveform nanofiber mentioned all can not control pattern and the size of vimentin filament well, it is proposed that
A kind of in the electrospinning of near field, utilize at auxiliary electrode plus controllable electric field, so that nanofiber accomplishes controllable deposition.
Summary of the invention
It is an object of the invention to consider the problems referred to above and the generating means of a kind of controlled waveform micro nanometer fiber is provided.This
It is safe, easy to operate that space, low cost, use are not only saved in invention, and service life is long.
The technical scheme is that the generating means of the controlled waveform micro nanometer fiber of the present invention, include accurate note
Penetrate pump, precise injection pump feed mechanism guide rail, precise injection pump power transmission slide block, injector push-rod, syringe, Static Spinning
Silk shower nozzle, auxiliary electrode, controllable electric power, motion platform, catcher, high-voltage DC power supply, control system, power leading screw, injection
Device is fixedly mounted on precise injection pump, and the power output of precise injection pump drives precise injection pump power to pass by power leading screw
Feeding power is transferred to injector push-rod by defeated slide block, injector push-rod feeding forward by the solution inside syringe from Static Spinning
Silk shower nozzle is extruded into taylor cone, and high-voltage DC power supply is connected with electrostatic spinning nozzle, and catcher is installed on the moving platform, receives
Storage is connected with earth terminal, and control system is connected with high-voltage DC power supply, and control system controls high-voltage DC power supply, motion platform
Being connected with control system, control system controls motion platform provides movement velocity and direction for catcher, and two pieces of auxiliary electrodes exist
The parallel opposition in electrostatic spinning nozzle both sides is installed, and two pieces of auxiliary electrodes are connected with controllable electric power respectively, and two blocks of auxiliary electrode plates exist
Under the control of control system, between two pieces of auxiliary electrodes, produce variable electric field.
The present invention compared with prior art, has the advantage that
1) assembly of the invention is to use near field direct write electric spinning equipment, can generate stable and uniform when being not added with auxiliary electric field
Fiber, the impact on nanofibres deposit of other factors can be got rid of；
2) the used syringe pump of apparatus of the present invention is precise injection pump, can more accurately control；
3) the auxiliary electrode applied field of the present invention is controllable electric field, can regulate according to the actual requirements the frequency of electric field with
And amplitude；
4) catcher is arranged in the middle of auxiliary electrode electric field, and the level height position of the side that catcher receives fiber is
Higher than auxiliary electrode following table end face, the level height of electrostatic spinning nozzle end, less than table end face on auxiliary electrode, can reduce
Jet is affected by the fringe field of auxiliary electrode.
The present invention is that a kind of design is ingenious, function admirable, the generating means of convenient and practical controlled waveform micro nanometer fiber.
Accompanying drawing explanation
Fig. 1 is the system structure schematic diagram of controlled waveform micro nanometer fiber device；
Fig. 2 is the front view of controlled waveform micro nanometer fiber device；
Fig. 3 is the side view of controlled waveform micro nanometer fiber device；
Fig. 4 is the top view of controlled waveform micro nanometer fiber device.
Detailed description of the invention
Embodiment:
The generating means of the controlled waveform micro nanometer fiber of the present invention, includes precise injection pump 1, precise injection pump feeding
Mechanism's guide rail 2, precise injection pump power transmission slide block 3, injector push-rod 4, syringe 5, electrostatic spinning nozzle 6, auxiliary electrode
7, controllable electric power 9, motion platform 11, catcher 14, high-voltage DC power supply 17, control system 19, power leading screw 20, syringe 5
Being fixedly mounted on precise injection pump 1, precise injection pump 1 is by power leading screw 20 with precise injection pump power transmission slide block 3 even
Connecing, precise injection pump power transmission slide block 3 is connected with injector push-rod 4, and one end of injector push-rod 4 is with injector push-rod 4 even
Connecing, the other end of injector push-rod 4 is installed in the hollow cavity of syringe 5, and power is passed through in the power output of precise injection pump 1
Leading screw 20 drives precise injection pump power transmission slide block 3 that feeding power is transferred to injector push-rod 4, and injector push-rod 4 is forward
Solution inside syringe 5 is extruded into taylor cone, high-voltage DC power supply 17 and electrostatic spinning from electrostatic spinning nozzle 6 by feeding
Shower nozzle 6 is connected, and catcher 14 is arranged on motion platform 11, and catcher 14 is connected with earth terminal 12, control system 19 and high pressure
DC source 17 connects, and control system 19 controls high-voltage DC power supply 17, and motion platform 11 is connected with control system 19, controls system
System 19 control motion platform 11 provides movement velocity and direction for catcher 14, and two pieces of auxiliary electrodes 7 are electrostatic spinning nozzle 6 liang
The parallel opposition in side is installed, and two pieces of auxiliary electrodes 7 are connected with controllable electric power 9 respectively, and two blocks of auxiliary electrode plates 7 are in control system 19
Under control, between two pieces of auxiliary electrodes 7, produce variable electric field.
Said syringe push rod pushes transmission for the power of solution；Syringe reservoir supplies for electrostatic spinning solution
Give；Shower nozzle is for spinning solution output and forms spinning environment；Precise injection pump carries for the solution feeding power of syringe
Supply；Catcher is used for receiving micro nanometer fiber；High-voltage DC power supply is used for providing spinning voltage；X-Y motion platform is catcher
Speed and the direction collecting micro nanometer fiber is provided；Variable electric field provides electric field for the generation of waveform micro nanometer fiber.This
Bright utilize oscillograph principle, charged object stress effect in the electric field, there is course deviation, in electrostatic spinning, spinning solution
Under electric field action, gush out from shower nozzle, be deposited on the catcher in moving, after to jet plus variable electric field, penetrate
Stream stress effect in variable electric field, there is controlled changing in the fiber track deposited in motion on catcher under electric field action
Become, thus obtain the micro nanometer fiber of controlled waveform.
In the present embodiment, said syringe 5 fixes briquetting 21 by the syringe inside precise injection pump 1 and syringe is locked
Press sheet 22 to be fixedly mounted on precise injection pump 1.Above-mentioned high-voltage DC power supply 17 is by wire 16 and electrostatic spinning nozzle 6 phase
Even.Above-mentioned catcher 14 is connected with earth terminal 12 by wire 13.Above-mentioned control system 19 is by holding wire 18 and HVDC
Power supply 17 connects.Above-mentioned motion platform 11 is connected with control system 19 by holding wire 15.Above-mentioned two blocks of auxiliary electrode plates 7 are respectively
It is connected with controllable electric power 9 by wire 8 and wire 10, under the control of control system 19, produces between two blocks of auxiliary electrode plates 7
Variable electric field.
In the present embodiment, above-mentioned catcher is installed on the moving platform, and catcher 14 is arranged on two pieces of auxiliary electrodes 7
In the middle of electric field, catcher 14 receives the level height position of the side of fiber higher than auxiliary electrode following table end face.
In the present embodiment, the level height of above-mentioned electrostatic spinning nozzle 6 end is less than the upper table end face of auxiliary electrode 7.
In the present embodiment, the voltage of above-mentioned auxiliary electrode is provided by controllable electric power；Motion platform does the motion of X-Y direction；Can
The generation method of control micro nanometer fiber is to produce variable by near field electrostatic spinning auxiliary electrode 7 under the effect of controllable electric power 9
Electric field and realize waveform micro nanometer fiber controllable deposition.
The operation principle of the present invention is as follows: when high-voltage DC power supply 17 connects electrostatic spinning nozzle 6 by wire 16, quiet
Forming spinning electric field between Electrospun shower nozzle 6 and catcher 14, the taylor cone that solution is formed on electrostatic spinning nozzle 6 is at electric field
Under effect, break through surface tension and form jet, under the control of control system 19, between auxiliary electrode 7, produce variable electric field, from
Electrostatic spinning nozzle 6 ejection jet, falling during the space motion of catcher 14, by auxiliary electrode 7 produce variable
Electric field action, when electric field change frequency is mated with jet falling speed, the skyborne movement locus of jet changes, because of
This, fall and appearance also can be occurred to the micro nanometer fiber of catcher to change, by the control to controllable electric power 9 and flat to motion
The control of platform 11, can collect controlled micro nanometer fiber on catcher 14.
In the electrospinning spinning process of near field, when auxiliary electrode is not added with voltage, jet aloft moves, the power suffered by jet
For electric field force, viscous force and the catcher motion pulling force to it of vertical direction, neglect in the stress being perpendicular to auxiliary electrode direction
Slightly disregard.When auxiliary electrode Voltage On state, between auxiliary electrode, form electric field, if the electric field force that auxiliary electrode suffered by jet produces
For F, under the effect of electric field force F, jet offsets original movement locus, when the flow velocity of jet is more than auxiliary electrode electric field change
During speed, the drop point of jet can control by controlling auxiliary electric field change, therefore, controls to be filled with catcher by combining peace
The direction of motion platform and speed, can control the wave shaped topography of fiber deposition.
Claims (10)
1. the generating means of a controlled waveform micro nanometer fiber, it is characterised in that include precise injection pump, precise injection pump
Feed mechanism guide rail, precise injection pump power transmission slide block, injector push-rod, syringe, electrostatic spinning nozzle, auxiliary electrode,
Controllable electric power, motion platform, catcher, high-voltage DC power supply, control system, power leading screw, syringe is fixedly mounted on precision
On syringe pump, the power output of precise injection pump drives precise injection pump power transmission slide block by feeding power by power leading screw
Being transferred to injector push-rod, the solution inside syringe is extruded into Thailand from electrostatic spinning nozzle by injector push-rod feeding forward
Strangling cone, high-voltage DC power supply is connected with electrostatic spinning nozzle, and catcher is installed on the moving platform, catcher and earth terminal phase
Even, control system is connected with high-voltage DC power supply, and control system controls high-voltage DC power supply, and motion platform is with control system even
Connecing, control system controls motion platform provides movement velocity and direction for catcher, and two pieces of auxiliary electrodes are at electrostatic spinning nozzle
The parallel opposition in both sides is installed, and two pieces of auxiliary electrodes are connected with controllable electric power respectively, and two blocks of auxiliary electrode plates are in the control of control system
Under system, between two pieces of auxiliary electrodes, produce variable electric field.
The generating means of controlled waveform micro nanometer fiber the most according to claim 1, it is characterised in that said syringe is led to
Cross the syringe inside precise injection pump and fix briquetting and syringe lock cover is fixedly mounted on precise injection pump.
The generating means of controlled waveform micro nanometer fiber the most according to claim 1, it is characterised in that above-mentioned HVDC
Power supply is connected with electrostatic spinning nozzle by wire.
The generating means of controlled waveform micro nanometer fiber the most according to claim 1, it is characterised in that above-mentioned catcher leads to
Cross wire to be connected with earth terminal.
The generating means of controlled waveform micro nanometer fiber the most according to claim 1, it is characterised in that above-mentioned control system
It is connected with high-voltage DC power supply by holding wire.
The generating means of controlled waveform micro nanometer fiber the most according to claim 1, it is characterised in that above-mentioned motion platform
It is connected with control system by holding wire.
The generating means of controlled waveform micro nanometer fiber the most according to claim 1, it is characterised in that above-mentioned two pieces of auxiliary
Battery lead plate is connected with controllable electric power by wire respectively, and under control of the control system, producing between two blocks of auxiliary electrode plates can
Changed electric field.
8. according to the generating means of the controlled waveform micro nanometer fiber described in any one of claim 1 to 7, it is characterised in that above-mentioned
Catcher is installed on the moving platform, and catcher is arranged in the middle of the electric field of two pieces of auxiliary electrodes, and catcher receives fiber
The level height position of the side is higher than auxiliary electrode following table end face.
The generating means of controlled waveform micro nanometer fiber the most according to claim 8, it is characterised in that above-mentioned electrostatic spinning
The level height of shower nozzle end is less than the upper table end face of auxiliary electrode.
The generating means of controlled waveform micro nanometer fiber the most according to claim 9, it is characterised in that above-mentioned auxiliary electrode
Voltage provided by controllable electric power；Motion platform does the motion of X-Y direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410152403.8A CN103993369B (en) | 2014-04-16 | 2014-04-16 | A kind of generating means of controlled waveform micro nanometer fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410152403.8A CN103993369B (en) | 2014-04-16 | 2014-04-16 | A kind of generating means of controlled waveform micro nanometer fiber |
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| CN103993369A CN103993369A (en) | 2014-08-20 |
| CN103993369B true CN103993369B (en) | 2016-08-24 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909333B (en) * | 2015-04-17 | 2017-03-01 | 广东工业大学 | Micro-nano corrugated structure manufacture device and method |
| CN105862146B (en) * | 2015-12-31 | 2018-05-18 | 广东工业大学 | A kind of composite electrospun device for preparing three-D micro-nano conductive tissue engineering rack |
| CN105671655B (en) * | 2016-03-14 | 2019-06-04 | 华侨大学 | Overlength ordered nano-fibers preparation facilities |
| CN107164820A (en) * | 2017-05-22 | 2017-09-15 | 华东理工大学 | A kind of highly oriented composite conducting nanofiber |
| CN110656386A (en) * | 2019-10-28 | 2020-01-07 | 季华实验室 | Near-field direct-writing electrostatic spinning fiber track and morphology control system |
| CN112030242B (en) * | 2020-08-26 | 2021-08-20 | 广东工业大学 | Piezoelectric driving type direct-writing electrostatic spinning system |
| CN113026125B (en) * | 2021-03-11 | 2022-07-26 | 广东工业大学 | Near-field direct-writing device for axial bending of winding structure |
| CN113372687B (en) * | 2021-06-16 | 2022-05-31 | 中国计量大学 | Bionic composite material started from cobweb and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101538746B (en) * | 2008-03-17 | 2010-12-15 | 国家纳米科学中心 | Principle and novel method for preparing orientation-controllable electrostatic spinning nano polymer fibers |
| US20100327494A1 (en) * | 2009-06-22 | 2010-12-30 | University Of South Carolina | Electrospun Fibrous Three-Dimensional Scaffolds with Well-Defined Pore Geometry |
| CN102162175B (en) * | 2011-01-05 | 2012-05-30 | 厦门大学 | Laser-guided electrospinning direct writing device |
| CN203938758U (en) * | 2014-04-16 | 2014-11-12 | 广东工业大学 | The generating apparatus of controlled waveform micro nanometer fiber |
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