CN109735905A - Electrostatic spinning experimental provision based on controllable complicated electric field - Google Patents
Electrostatic spinning experimental provision based on controllable complicated electric field Download PDFInfo
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Abstract
Electrostatic spinning experimental provision based on controllable complicated electric field, belong to electrospinning fibre experimental field, in order to solve the problems, such as to improve the efficiency of electrostatic spinning, bearing periphery is connected between two biparting shape circle rails, two biparting shape circle rails, the lower end surface of each round rail connects pole plate fixed link, pole plate is connected to pole plate fixed link to rotate with movable plate electrode fixed link in the fan-shaped movement of circle rail, the top section enclosed in bearing, bottom stage stretches out the upper surface of bearing periphery respectively, lower end surface, the top section and driving motor enclosed in the bearing of stretching passes through transmission band connection, conveyer belt is in slot on it, effect is the active force that injection stream is promoted it to rotate by one, injection stream still makes rotating motion around the axis of spinning nozzle.
Description
Technical field
The invention belongs to electrospinning fibre experimental fields, are related to a kind of electrostatic spinning experiment dress based on controllable complicated electric field
It sets.
Background technique
In recent years, the research of nano material became a hot issue, prepared nanofiber by electrostatic spinning technique
Material is one of most important academic and technical activity of world's material science and technology field in recent ten years, both at home and abroad for quiet
Electrospinning has carried out in-depth study.With traditional separation compared with stretching mode, electrostatic spinning is with the letter of its manufacturing device
List, cost of spinning is cheap, it is various to spin substance classes, technique is controllable, has what is become apparent to have in the extraction of nanofiber
The advantages that effect property, it has also become effectively prepare one of main path of nano-fiber material.The forming process of electrostatic spinning are as follows: poly-
It is subject to sufficiently large high-pressure electrostatic on polymer solution, polymer dropping liquid is enable to generate injection when with material surface contact
Stream.The stretched refinement of these threads is deposited on body surface and forms nanofiber at the same time by bending, solidification process
Film.In the electrospinning process, the state-variable for influencing electrospun fibers pattern and property is mainly the stream of polymer solution
Three bulk properties, spinning technology parameter and environmental parameter aspects, the fluid behaviour of polymer solution is mainly the opposite of solution
The characterisitic parameters such as molecular mass, relative molecular mass distribution, the viscosity of polymer solution, conductivity, surface tension；Spinning technique
Parameter be mainly Polymer Solution concentration, the flow rate of electrostatic spinning fluid, electric field and electric field strength, capillary spinning nozzle with
The distance between collecting board collects board status；Environmental parameter is mainly temperature and speed air flow of spinning processing environment etc.,
Above-mentioned parameter all plays decisive role to electrostatic spinning process process.Electrospinning fibre mass production technology is the following Static Spinning
One important directions of silk technical research, domestic and international researcher has carried out linguistic term to electrostatic spinning apparatus one after another, to mention
The yield of high electrospinning fibre.Wherein, while carrying out electrostatic spinning using multiple nozzles becomes a research hotspot, there is multiply injection
Stream is ejected from different spinning nozzles simultaneously, falls on the same collecting board.Since injection stream itself has unstable swing
Characteristic causes to have an impact between injection stream, intermesh between per share injection stream, and the fiber distribution being collected into has any
Property.
Summary of the invention
In order to solve the problems, such as to improve the efficiency of electrostatic spinning, the following technical solutions are proposed by the present invention: one kind is based on controllable
The electrostatic spinning experimental provision of complicated electric field, including transmission device, driving motor, electrospinning spinnerets, bipolar plates, pole plate fixed link,
Pin type auxiliary electrode, collecting board, motor support frame, telescopic rod, transmission device surface have one layer of electro-insulating rubber, and transmission device is
Bearing, bearing periphery are connected between two biparting shape circle rails, and two biparting shape circle rails, the lower end surface of each round rail connects pole plate
Fixed link, pole plate are connected to pole plate fixed link to rotate with movable plate electrode fixed link in the fan-shaped movement of circle rail, enclose in bearing
Top section, bottom stage stretch out the upper surface of bearing periphery, lower end surface respectively, the top section and driving motor enclosed in the bearing of stretching
By transmitting band connection, for conveyer belt in slot on it, the bottom stage enclosed in the bearing of stretching has coaxial peripheral, and should
Peripheral with the bearing periphery is intermittent, and the periphery two sides connect two fan-shaped circle rails, and the fan-shaped circle rail slidably connects
Connect electrospinning spinnerets.
Further, the bipolar plates are divided into two layers, are that telescopic structure adjusts pole plate height up and down, in bipolar plates point
It is not passed through DC power supply, equally distributed space electric field is generated between two-plate.
Further, pole plate fixed link is rod-like structure, is made of the aluminum-magnesium alloy material Jing Guo anodized, pole
Plate fixed link is mainly responsible for placement and support polar plate, and one is terminated with pulley blocks, and pulley blocks are placed in the groove of biparting shape circle rail,
Pulley blocks are driven by a motor to be slided in groove to form fan-shaped track.(and the pulley head through-going recess of pulley blocks, and it is located at fan
It is slided on the surface of the top surface of shape circle rail).
Further, telescopic rod is connected to electrospinning spinnerets, and telescopic rod is telescopic rod diagonally downward, electrospinning spinnerets one
Pulley blocks are terminated with, pulley blocks are placed in the groove of fan-shaped circle rail, and to slide in groove, and telescopic rod is linked, telescopic rod
The internal layer bottom surface for connecting electrospinning spinnerets and fan-shaped circle rail, for adjusting angle between electrospinning spinnerets and fan-shaped circle rail internal layer bottom surface.
(groove is to be opened in the inside groove of fan-shaped circle rail, and the pulley head of pulley blocks is located inside groove, slides along internal groove side wall).
Further, driving motor is two stepper motors, is fixed on motor support frame, is each responsible for transmission device transfer
The up-down structure of axis rotates.
Further, it collects plate surface and is covered with one layer of tinfoil, be mainly used for collecting electrospinning fibre, motor support frame is mainly born
Duty support motor.
The utility model has the advantages that the device passes through the electrostatic spinning process of electric field controls, to control the motion process of injection stream, electric field
Distribution directly the control effect of spinning process is had an impact.Before electrostatic spinning process starts, two electrospinning spinnerets are adjusted
The distance between and the angle between two spray heads and electrospinning spinnerets rotating bar.Different electrical charges are placed with two electrospinning spinnerets
For solution, it should will be passed through positive supply away from the closer pole plate of positive charge in the state of putting between two spray heads, it is closer away from negative electrical charge
Pole plate is passed through negative supply, and equally distributed space electric field can be generated by being passed through between the two-plate of power supply, and injection stream is fallen by electric field
To collecting board；Such as two kinds of electrically charged identical, states in a vertical shape between two spray heads of solution, two pole plates should all be passed through negative supply,
Compared with traditional electrostatic spinning process, electric field acts on double-jet aeration during introducing the electrostatic spinning of electric field, injection stream
Motor behavior and micromorphology can all change, predominantly the following aspects:
(1) after introducing electric field, since electric field does uniform speed rotation, the effect that injection stream is promoted it to rotate by one
Power, injection stream still make rotating motion around the axis of spinning nozzle, rotary motion at this time be under the guidance of electric field force into
Row, so that the rotation of injection stream has certain controllability and regularity.
(2) active force with different charge injection streams by extra electric field, and electric field force suffered by different electrical charges
It is contrary；Further, the injection stream that the solution of different electrical charges is sprayed in two under the action of electric field force, can form friendship
Knitmesh trellis new structure；Solution with identical charges due to the attractive effect of pole plate, can prevent two bursts of injection streams it
Between intermesh.
(3) after introducing electric field, the amplitude of fluctuation of injection stream reduces, and corresponding loss of energy reduces, and promotes the fortune of injection stream
Dynamic speed further increases, and fibre diameter accordingly reduces.
(4) in addition, in the case of two kinds of electrospun solution band identical charges, during electrostatic spinning, when ground connection pin type auxiliary
When electrode moves closer to two electrospinning spinnerets, two spray heads can generate multiply injection stream simultaneously, greatly improve electrostatic spinning
Efficiency.
Detailed description of the invention
Fig. 1 be introduce electric field electrostatic spinning during electric field to double-jet aeration effect contrast figure；
Fig. 2 is schematic device；
Fig. 3 is the fixed schematic diagram of electrospinning spinnerets；
Fig. 4 is pole plate fixed link connection schematic diagram；
Fig. 5 is transmission device schematic diagram.
Specific embodiment
The present invention is a kind of electrostatic spinning experimental provision based on controllable complicated electric field.Pass through succinct, practical machinery knot
Structure design during controllable rotating compound field is introduced into electrostatic spinning, is realized with lower cost and is charged to double spray heads
The TRAJECTORY CONTROL of injection stream motion process improves the efficiency of spinning fibre collection and the quality of spinning fibre.
The electrostatic spinning experimental provision based on controllable complicated electric field is by transmission device 1, driving motor 2, electrospinning spinnerets
3, the part such as bipolar plates 4, pole plate fixed link 5, pin type auxiliary electrode 6, collecting board 7, motor support frame 8, telescopic rod 9 forms.
Transmission device 1 is mainly Titanium-magnesium alloy material composition, and it is all to have that specific strength is high, density is small, corrosion-resistant, recyclable etc.
More advantages, surface have one layer of electro-insulating rubber, can prevent pole plate from having an impact when being passed through DC power supply to space magnetic field.It passes
Dynamic device 1 is made of shaft 11,12 two parts of rotating bar, and wherein shaft 11 designs for upper layer and lower layer, and upper layer is annulus column
Shape design, lower layer are the different concentric column design of two diameters；Wherein rotating bar 12 is penetration type groove design, is divided into pole plate and turns
Lever and electrospinning spinnerets rotating bar, are respectively symmetrically fixed on the upper and lower level of shaft, are mainly used for fixing and adjusting pole plate and electrospinning
Nozzle position.
Driving motor 2 is two stepper motors, is fixed on motor support frame, be each responsible for shaft in transmission device up and down
Structure rotation.
Electrospinning spinnerets 3 are mainly responsible for various solution, spray solution under the action of electric field.
Bipolar plates 4 are divided to be designed for two layers of telescopic structure, can be required according to technique during electrostatic spinning, be selected suitable pole
Plate height.When bipolar plates each lead into DC power supply, equally distributed space electric field can be generated between two-plate.
Pole plate fixed link 5 is rod-like structure, is made of the aluminum-magnesium alloy material Jing Guo anodized, has hardness
High, the advantages that corrosion resistance is good, pole plate fixed link are mainly responsible for placement and support polar plate, one be terminated with pulley blocks be placed in it is biparting
In shape circle rail outer layer groove, pulley blocks can be driven by a motor and slided.
Pin type auxiliary electrode 6 is placed in two electrospinning spinnerets middle positions, can be moved up and down by driving means, is doing electricity of the same race
Property charge solution electrospinning processes when, auxiliary electrode can make electrospinning spinnerets spray multiply injection during close to electrospinning spinnerets
Stream, to improve electrospinning efficiency.
7 surface of collecting board is covered with one layer of tinfoil, is mainly used for collecting electrospinning fibre.
Motor support frame 8 is mainly responsible for support motor.
Telescopic rod 9, which is mainly responsible for, connects electrospinning spinnerets and fan-shaped circle rail internal layer bottom surface, for adjusting electrospinning spinnerets and sector
Angle between circle rail internal layer bottom surface.
Particular technique content:
Injection syringe needle and collecting board form generating positive and negative voltage in conventional electrospinning fibre experimental provision, electrification electrospun solution from
It ejects, is fallen on collecting board in syringe needle, since only one spray head works during electrostatic spinning, spinning efficiency and its low
Under, the unstability in injection stream dropping process results in that be easy to appear fibre structure during the spinning process single, uneven etc.
Consequence.A kind of electrostatic spinning experimental provision based on controllable complicated electric field is by transmission device, driving motor, electrospinning spinnerets, bipolar
The part such as plate, pole plate fixed link, pin type auxiliary electrode, collecting board forms.Wherein transmission device is made of Titanium-magnesium alloy material, tool
There is many advantages, such as specific strength is high, density is small, corrosion-resistant, recyclable, surface has one layer of electro-insulating rubber, can prevent pole plate
Space electric field is had an impact when being passed through DC power supply.Electrospinning spinnerets upper end is placed in electrospinning spinnerets rotating bar groove, and can
Electrospinning spinnerets rotating bar bottom surface is fixed on by telescopic rod in the smooth sliding in groove, middle section, which is mainly used for adjusting
Save electrospinning spinnerets and electrospinning spinnerets rotating bar bottom surface angle.It in spinning process, can be required according to different process, adjust and drive
Dynamic motor speed size, to adjust electric field revolving speed and electrospinning spinnerets revolving speed.When carrying out spinning technique, can be wanted according to technique
Ask selection electrospinning spinnerets position and angle.Pole plate fixed link is made of the aluminum-magnesium alloy material Jing Guo anodized, tool
Have the advantages that hardness is high, corrosion resistance is good, in addition, the almag surface by anodized forms layer oxide film,
When pole plate is passed through direct current, good insulating body can be done.Pole plate fixed link one is terminated with pulley blocks and is placed in outside biparting shape circle rail
In layer groove, pulley blocks can be driven by a motor and slided.Bipolar plates are telescopic structure, when being passed through DC power supply, can be used for adjusting
Save the size of electric field space.A kind of electrostatic spinning experimental provision based on controllable complicated electric field, before spinning technique starts, Ying Gen
The characteristics of according to electrospinning fibre material, eject request and technique require whether selection driving motor works, and adjust pole plate and fix
Bar and electrospinning spinnerets angle, position select suitable electric field space size, adjust pole plate height, and make two pole plate height
It is identical, stablized with ensuring to be formed by electric fields uniform.If two electrospinning spinnerets are placed with the solution of different electrical charges, two spray heads are answered
In to the state of putting, as shown, positive supply will be passed through away from positive charge closer pole plate, negative electricity is passed through away from the closer pole plate of negative electrical charge
Source, equally distributed space electric field can be generated by being passed through between the two-plate of power supply, and injection stream falls on collecting board by electric field.With biography
The electrostatic spinning process of system is compared, and electric field acts on double-jet aeration during introducing the electrostatic spinning of electric field, and injection stream is by electric field
The effect of power, motor behavior and micromorphology can all change.If two kinds of solution institutes are electrically charged identical, it is between two spray heads
Parastate is just set vertically, as shown in Figure 1, two pole plates should all be passed through negative supply or ground connection, the solution with identical charges due to
It with the attractive effect of pole plate, can prevent from intermeshing between two bursts of injection streams, while during electrostatic spinning, pin type is auxiliary
Electrode is helped to be grounded, and gradually close to electrospinning spinnerets, at a certain position, two spray heads can generate multiply injection stream, pole simultaneously
The efficiency of electrostatic spinning is improved greatly.
The electrostatic spinning experimental provision based on controllable complicated electric field is moved with controlling injection stream during electrostatic spinning
Unstability and spinning yield it is lower for the purpose of, control injection stream motion profile using electric field, solve multiply injection stream
Problem is staggeredly kinked, and so that electrospinning spinnerets is sprayed multiply injection stream using auxiliary electrode, to improve spinning yield.
The preferable specific embodiment of the above, only the invention, but the protection scope of the invention is not
It is confined to this, anyone skilled in the art is in the technical scope that the invention discloses, according to the present invention
The technical solution of creation and its inventive concept are subject to equivalent substitution or change, should all cover the invention protection scope it
It is interior.
Claims (6)
1. a kind of electrostatic spinning experimental provision based on controllable complicated electric field, which is characterized in that including transmission device, driving electricity
Mechanical, electrical spinning spray head, bipolar plates, pole plate fixed link, pin type auxiliary electrode, collecting board, motor support frame, telescopic rod, transmission device
Surface has one layer of electro-insulating rubber, and transmission device is bearing, and bearing periphery is connected between two biparting shape circle rails, and two double
Sector circle rail, the lower end surface of each round rail connect pole plate fixed link, and pole plate is connected to pole plate fixed link to exist with movable plate electrode fixed link
The fan-shaped movement of circle rail and rotate, the top section that encloses in bearing, bottom stage stretch out the upper surface of bearing periphery, lower end surface respectively,
The top section and driving motor enclosed in the bearing of stretching is surrounded in slot on it by transmission band connection, conveyer belt, stretching
The bottom stage enclosed in bearing has coaxial peripheral, and the periphery and the bearing periphery are intermittent, and the periphery two sides connect
Two fan-shaped circle rails, the fan-shaped circle rail slidable connection electrospinning spinnerets.
2. the electrostatic spinning experimental provision as described in claim 1 based on controllable complicated electric field, which is characterized in that described is double
Pole plate is divided into two layers, is telescopic structure adjustment pole plate height up and down, DC power supply is each led into bipolar plates, between two-plate
Generate equally distributed space electric field.
3. the electrostatic spinning experimental provision as described in claim 1 based on controllable complicated electric field, which is characterized in that pole plate is fixed
Bar is rod-like structure, is made of the aluminum-magnesium alloy material Jing Guo anodized, and pole plate fixed link is mainly responsible for placement and props up
Pole plate is supportted, one is terminated with pulley blocks, and pulley blocks are placed in the groove of biparting shape circle rail, is driven by a motor pulley blocks in groove
It slides to form fan-shaped track.
4. the electrostatic spinning experimental provision as described in claim 1 based on controllable complicated electric field, which is characterized in that telescopic rod connects
It connects in electrospinning spinnerets, and telescopic rod is telescopic rod diagonally downward, electrospinning spinnerets one are terminated with pulley blocks, and pulley blocks are placed in fan
In the groove of shape circle rail, to slide in groove, and telescopic rod is linked, and telescopic rod connection electrospinning spinnerets are interior with fan-shaped circle rail
Layer bottom surface, for adjusting angle between electrospinning spinnerets and fan-shaped circle rail internal layer bottom surface.
5. the electrostatic spinning experimental provision as described in claim 1 based on controllable complicated electric field, which is characterized in that driving motor
For two stepper motors, it is fixed on motor support frame, is each responsible for the up-down structure rotation of shaft in transmission device.
6. the electrostatic spinning experimental provision as described in claim 1 based on controllable complicated electric field, which is characterized in that collecting board table
Face is covered with one layer of tinfoil, is mainly used for collecting electrospinning fibre, motor support frame is mainly responsible for support motor.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106564A (en) * | 2019-05-23 | 2019-08-09 | 东华大学 | Oriented nanofibers yarn combination formula electrostatic spinning apparatus and its application method |
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| CN102121137A (en) * | 2010-12-28 | 2011-07-13 | 大连理工大学 | Double-sprayer bipolar electrostatic spinning method |
| CN103205818A (en) * | 2013-04-28 | 2013-07-17 | 厦门大学 | Air-current-assisted hybrid electrostatic spinning device |
| CN103469492A (en) * | 2013-09-22 | 2013-12-25 | 北京化工大学 | Electrostatic-spinning fiber deposition homogenizing device and method |
| CN105506759A (en) * | 2016-01-29 | 2016-04-20 | 江西服装学院 | Electrostatic spinning machine |
| CN106222762A (en) * | 2016-04-14 | 2016-12-14 | 浙江海洋学院 | Nano fiber electrostatic spinning equipment and using method thereof |
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2019
- 2019-03-22 CN CN201910222922.XA patent/CN109735905B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121137A (en) * | 2010-12-28 | 2011-07-13 | 大连理工大学 | Double-sprayer bipolar electrostatic spinning method |
| CN103205818A (en) * | 2013-04-28 | 2013-07-17 | 厦门大学 | Air-current-assisted hybrid electrostatic spinning device |
| CN103469492A (en) * | 2013-09-22 | 2013-12-25 | 北京化工大学 | Electrostatic-spinning fiber deposition homogenizing device and method |
| CN105506759A (en) * | 2016-01-29 | 2016-04-20 | 江西服装学院 | Electrostatic spinning machine |
| CN106222762A (en) * | 2016-04-14 | 2016-12-14 | 浙江海洋学院 | Nano fiber electrostatic spinning equipment and using method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106564A (en) * | 2019-05-23 | 2019-08-09 | 东华大学 | Oriented nanofibers yarn combination formula electrostatic spinning apparatus and its application method |
| CN110106564B (en) * | 2019-05-23 | 2021-08-31 | 东华大学 | Combined electrostatic spinning device for oriented nanofiber yarn and using method thereof |
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