CN102191573B - Mass production nanofiber electrospinning device - Google Patents
Mass production nanofiber electrospinning device Download PDFInfo
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- CN102191573B CN102191573B CN2011101314943A CN201110131494A CN102191573B CN 102191573 B CN102191573 B CN 102191573B CN 2011101314943 A CN2011101314943 A CN 2011101314943A CN 201110131494 A CN201110131494 A CN 201110131494A CN 102191573 B CN102191573 B CN 102191573B
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- rake
- solution tank
- drain
- power supply
- voltage power
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Abstract
The invention discloses a mass production nanofiber electrospinning device, relating to a spinning device. The mass production nanofiber electrospinning device overcomes the defects of high injection voltage threshold value, big possibility of blocking a needle tube, small possibility of recovering a solution, small possibility of being cleaned and the like of the existing mass production electrospinning technology. The mass production nanofiber electrospinning device is provided with a collection plate, a solution tank, a direct-current high-voltage power supply, a driving device and a liquid guiding rake, wherein the collection plate is arranged above the solution tank; a conducting layer is arranged in the solution tank; the driving device is provided with a motor and a mechanical driving mechanism; the output shaft of the motor is connected with the power input end of the mechanical driving mechanism; the power output end of the mechanical driving mechanism is linked and connected with the liquid guiding rake; the anode of the direct-current high-voltage power supply is electrically connected with the conducting layer in th solution tank; and the cathode of the direct-current high-voltage power supply is electrically connected with the collection plate and is earthed.
Description
Technical field
The present invention relates to a kind of device for spinning, particularly relate to a kind of electric spinning equipment that can be used for producing in batches nanofiber.
Background technology
Nanofiber is widely used in numerous areas such as national defence, medicine, chemical industry and electronics because its very high specific area and superior performances such as mechanics, optics and electricity, and electrostatic spinning is one of effective technology for preparing at present nanofiber.Under the high voltage electrostatic field, polymer solution produces jet, along with charged jet is stretched by electric field and the continuous volatilization of solvent, finally on gathering-device, is obtaining the solid nano fiber.But traditional electrostatic spinning output is very low, so the scientific research personnel studies the batch manufacturing that the whole bag of tricks is realized nanofiber.At present, being widely used in the device of producing nanofiber in batches is that combination spininess point jet array electricity spins mostly.
Chinese patent CN200720076954.6 has reported a kind of multi-nozzle electrospinning device of spray up; This device is the natural expansion to the single shower nozzle of tradition; A plurality of shower nozzles are carried out jet spinning with the array way arrangement; But the electric field in this device between each shower nozzle influences each other, and the diameter difference opposite sex of preparation nanofiber is very big, even the problem that drop and zone line shower nozzle can't spray occurs.Chinese patent CN200910072022.8 has reported a kind of multiaperture-type electrostatic spinning apparatus, but it must be furnished with the constant-pressure liquid supply system, the device more complicated, and cost is higher, and porous plate also is difficult for cleaning.(O.O.Dosunmu such as Nigeria researcher O.O.Dosunmu; G.G.Chase; W.Kataphinan; D.H.Reneker.Electrospinning of polymer nanofibres frommultiplejets on a porous tubular surface.Nanotechnology 2006 17:1123-1127) through perforated tubular electric spinning equipment in batches, utilizes pneumatic shuttle will manage interpolymer solution slowly outside the extrusion cavities; Under the effect of high voltage electric field, produce the multi beam jet be ejected into peripheral around the cylindrical reception of layer of metal online.The method needs air pump to assist feed flow, and structure is comparatively complicated, and exists pore to be prone to blockage problem.Chinese patent CN200810153891.9 has reported a kind of non-weaving cloth electric spinning equipment in batches; The metal roller that this device adopts the circumference appearance that is immersed in polymer solution to be cast with tapered thread is an injector head; To replace traditional needle point shower nozzle to carry out spinning; Though output significantly improves, it exists, and the injection electric threshold value is high, residual solution easy to clean and be not suitable for shortcoming such as long-time production not.
Summary of the invention
The purpose of this invention is to provide a kind ofly overcome that the injection electric threshold value that existing electrospinning in batches exists is high, needle tubing is prone to stop up, solution is difficult to reclaim, the volume production nanofiber electric spinning equipment of shortcoming such as easy to clean not.
The present invention is provided with collecting board, solution tank, DC high-voltage power supply, drive unit and drain rake;
Collecting board is located at the solution tank top; Be provided with conductive layer in the solution tank; Drive unit is provided with motor and mechanical transmission mechanism, and motor output shaft is connected with the mechanical transmission mechanism power intake, and mechanical transmission mechanism clutch end and drain rake are connected; The positive pole of DC high-voltage power supply is electrically connected with the interior conductive layer of solution tank, and the negative pole of DC high-voltage power supply is electrically connected with collecting board and ground connection.
Said solution tank is preferably double-decker, and internal layer is a conductive layer, and skin is an insulating barrier.
Said mechanical transmission mechanism can be crank and rocker mechanism, cam mechanism, incomplete gear mechanism etc.Said crank and rocker mechanism is provided with crank, connecting rod and rocking bar, and said connecting rod and rocking bar are hinged, and the raking arm of pin joint and drain rake is hinged.
Said drain rake preferably is provided with raking arm and array rake teeth, and the array rake teeth can be single-column type array rake teeth or multiple row formula array rake teeth.The termination of said rake teeth is preferably most advanced and sophisticated head, and the liquid that the rake teeth of most advanced and sophisticated head can guide liquid level to form similar taylor cone is better bored, and the size of most advanced and sophisticated head is more little, and the physical dimension that the liquid that guiding forms is bored is more little, and the diameter of the nanofiber that makes is also more little.
Operation principle of the present invention is following:
When making nanofiber in batches; At first open DC high-voltage power supply and produce high pressure; Drain rake is done periodic reciprocating motion according to the requirement path under the driving of drive unit immediately, the rake teeth termination constantly with solution tank in liquid level dip in after touch and remove, owing to the adhesion effect of polymer solution; Rake teeth can guide liquid level to form the liquid awl of similar taylor cone; Each liquid awl overcomes liquid level surface tension effects generation jet under the effect of high voltage electric field, and jet stretches and solvent evaporates through electric field, finally on collecting board, obtains nanofiber.Size through changing the rake teeth size, critical voltage, liquid level can obtain the nanofiber of different-diameter apart from the parameters such as the degree of depth of collecting board distance and the most advanced and sophisticated immersed in liquid level of rake teeth.
Compare with prior art, the present invention has following outstanding advantage:
1) the most advanced and sophisticated periodicity of rake teeth is removed after dipping in and touching polymer solution; Because the adhesion effect of polymer solution; Rake teeth guiding liquid level forms the liquid awl of similar taylor cone, and liquid is bored under the effect of high voltage electric field power, overcomes the fluid level gauge surface tension; Be easy to lower voltage (＜10kv) form down the awl jet, through applying the effect that more high-tension mode can reach the jet continuous injection; Can overcome high, the susceptible to plugging shortcoming of needle tubing of injection electric threshold value that existing electrospinning exists like this;
2) touch polymer solution, need not clean basically owing to only adopting the rake teeth termination periodically to dip in, guaranteed that therefore nanofiber continues to make in batches;
3) size that the present invention can be through changing the rake teeth size, critical voltage, liquid level obtain the nanofiber of different-diameter apart from the parameters such as the degree of depth of collecting board distance and rake teeth termination immersed in liquid level.
Description of drawings
Fig. 1 is one of structural representation of the embodiment of the invention.
Fig. 2 be the embodiment of the invention structural representation two.
Fig. 3 is the driving device structure sketch map in the embodiment of the invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Referring to Fig. 1～3, the embodiment of the invention is provided with collecting board 1, drive unit 2, drain rake 3, solution tank 4 and DC high-voltage power supply 5.
DC high-voltage power supply 5 is used to produce high pressure, and the positive pole of DC high-voltage power supply 5 is electrically connected with the conductive layer 41 of solution tank 4, and the negative pole of DC high-voltage power supply 5 is electrically connected with collecting board 1 and ground connection.Collecting board 1 is located at solution tank 4 tops, is used to collect nanofiber.Drive unit 2 is provided with motor 6 and crank and rocker mechanism, and crank and rocker mechanism is made up of crank 7, connecting rod 8 and rocking bar 9, and said connecting rod 8 is hinged with rocking bar 9, and the raking arm of pin joint and drain rake 3 is hinged.Like this, drive unit 2 can drive drain rake 3 according to certain path and motion mode motion (drain rake 3 is made reciprocally swinging, shown in circular arc dotted line among Fig. 3).Drain rake 3 is provided with raking arm and single-row rake teeth; The rake teeth of drain rake 3 is used for periodically dipping in touching liquid level; The guiding liquid level produces the liquid awl of similar taylor cone; Each liquid awl all can produce jet under the effect of high voltage electric field, and jet stretches and solvent evaporates through electric field, finally on collecting board 1, obtains nanofiber.The rake teeth of drain rake 3 is that insulating materials (also can be conductive material) is processed.The rake teeth termination of drain rake 3 is most advanced and sophisticated head (the rake teeth termination of drain rake 3 has been drawn as butt end among Fig. 1 and 2).
During practical application, drive unit 2 can be provided with the quantity of drain rake 3 as required, and the drain that is equipped with all around that is preferably in solution tank 4 harrows 3, and rake teeth quantity, shape and the arrangement mode of drain rake 3 all can change as required.The structure of drive unit 2 is conversion as required also.
Claims (3)
1. a volume production nanofiber electric spinning equipment is characterized in that being provided with collecting board, solution tank, DC high-voltage power supply, drive unit and drain rake;
Collecting board is located at the solution tank top; Be provided with conductive layer in the solution tank; Drive unit is provided with motor and mechanical transmission mechanism, and motor output shaft is connected with the mechanical transmission mechanism power intake, and mechanical transmission mechanism clutch end and drain rake are connected; The positive pole of DC high-voltage power supply is electrically connected with the interior conductive layer of solution tank, and the negative pole of DC high-voltage power supply is electrically connected with collecting board and ground connection;
Said drain rake is provided with raking arm and array rake teeth, and the termination of rake teeth is most advanced and sophisticated head, and during work, the drain rake is made reciprocally swinging, and the array rake teeth periodically dips in the solution that touches in the said solution tank, and the liquid level of direct solution produces the taylor cone shape.
2. a kind of volume production nanofiber electric spinning equipment as claimed in claim 1 is characterized in that said solution tank is a double-decker, and internal layer is a conductive layer, and skin is an insulating barrier.
3. a kind of volume production nanofiber electric spinning equipment as claimed in claim 1; It is characterized in that said mechanical transmission mechanism is a crank and rocker mechanism; Crank and rocker mechanism is provided with crank, connecting rod and rocking bar, and said connecting rod and rocking bar are hinged, and the raking arm of pin joint and drain rake is hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101314943A CN102191573B (en) | 2011-05-19 | 2011-05-19 | Mass production nanofiber electrospinning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101314943A CN102191573B (en) | 2011-05-19 | 2011-05-19 | Mass production nanofiber electrospinning device |
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| Publication Number | Publication Date |
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| CN102191573A CN102191573A (en) | 2011-09-21 |
| CN102191573B true CN102191573B (en) | 2012-11-14 |
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| CN2011101314943A Expired - Fee Related CN102191573B (en) | 2011-05-19 | 2011-05-19 | Mass production nanofiber electrospinning device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505157B (en) * | 2011-11-04 | 2014-04-30 | 厦门大学 | Electrospinning device capable of realizing non-contact induction for nano-fibers with controllable diameters |
| CN103194806B (en) * | 2013-04-25 | 2015-06-17 | 杨宝麟 | Polymer solution electrostatic spinning component, device and method |
| CN104178825B (en) * | 2014-07-31 | 2016-03-02 | 厦门大学 | A kind of nanofiber diameter controlled helper-inducer batch electric spinning equipment |
| CN104451910B (en) * | 2014-11-10 | 2017-06-06 | 厦门大学 | The electric spinning equipment that jet fixed point induces |
| CN105821494B (en) * | 2016-01-07 | 2018-06-05 | 上海同芮投资管理有限公司 | A kind of filament type electrostatic spinning apparatus for preparing nanofiber |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1888154A (en) * | 2006-07-24 | 2007-01-03 | 厦门大学 | Polymer nano fiber batch spurting device |
| CN101189368A (en) * | 2005-06-07 | 2008-05-28 | 埃尔马科有限公司 | A method and device for production of nanofibres from the polymeric solution through electrostatic spinning |
| CN101476167A (en) * | 2008-12-10 | 2009-07-08 | 天津工业大学 | Electro-spinning nano fibre nonwoven production apparatus |
| CN101787573A (en) * | 2010-01-22 | 2010-07-28 | 东南大学 | Mass production device for preparing nanofiber |
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2011
- 2011-05-19 CN CN2011101314943A patent/CN102191573B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189368A (en) * | 2005-06-07 | 2008-05-28 | 埃尔马科有限公司 | A method and device for production of nanofibres from the polymeric solution through electrostatic spinning |
| CN1888154A (en) * | 2006-07-24 | 2007-01-03 | 厦门大学 | Polymer nano fiber batch spurting device |
| CN101476167A (en) * | 2008-12-10 | 2009-07-08 | 天津工业大学 | Electro-spinning nano fibre nonwoven production apparatus |
| CN101787573A (en) * | 2010-01-22 | 2010-07-28 | 东南大学 | Mass production device for preparing nanofiber |
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| CN102191573A (en) | 2011-09-21 |
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