CN207435591U - A kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber - Google Patents
A kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber Download PDFInfo
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- CN207435591U CN207435591U CN201720947844.6U CN201720947844U CN207435591U CN 207435591 U CN207435591 U CN 207435591U CN 201720947844 U CN201720947844 U CN 201720947844U CN 207435591 U CN207435591 U CN 207435591U
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- stent
- centrifugation
- static board
- centrifuging
- electrostatic spinning
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Abstract
The utility model discloses a kind of devices for centrifuging differential method of electrostatic spinning and preparing nanofiber, mainly include electric cabinet, centrifugation carrier base, sunk screw, static board track, centrifugation stent, ball-screw, heating collar, runner, frame, extruder, thermocouple, collection belt, static board, Conic nozzle, rotation axis, shaft coupling, roller, collection belt supporting frame and stepper motor, wherein Conic nozzle is fixed by sunk screw and rotation axis connection, and rotation axis is connected by shaft coupling with stepper motor.Stepper motor, which is connected through a screw thread, to be fixed on stent.Static board connects HV generator anode, centrifuge stent framework ground connection, driving motor is placed on the hold-down support under centrifugation stent in collection device, roller, which is fixed on, to be collected on belt supporting frame, one of them is tensioning roller, it can be moved radially on belt supporting frame is collected, to be tensioned entire conveyer belt.Jet stream is stretched refinement by centrifugal force, electrostatic force, self gravitation effect in the utility model, the fibre diameter smaller of acquisition.
Description
Technical field
The present invention relates to a kind of devices for centrifuging differential method of electrostatic spinning and preparing nanofiber, belong to electrostatic spinning field.
Background technology
Method of electrostatic spinning is that polymer solution or melt carry out injection stretching under electrostatic interaction and obtain nano-scale fiber
Spinning process.Its manufacture device is simple, cost of spinning is cheap, can spin that substance classes are various, technique is controllable.Electrospun fibers
Non-woven fabrics obtained has the advantages that voidage is high, and large specific surface area, fiber fine degree and homogeneity are high, and draw ratio is big.But
Method of electrostatic spinning there is also the technological deficiency determined by its technique, for example, method of electrostatic spinning prepares nanofiber, fiber it is thin
Change depends primarily upon application voltage, and voltage is bigger within the specific limits, and the silk prepared is thinner, but reaches certain in voltage
Jet stream punch-through can occur after degree, this causes electrostatic spinning technique greatly to be limited in terms of fibrous refinement degree is improved
System, in addition, method of electrostatic spinning spinning efficiency are improved by way of nozzle superposition mostly, and when nozzle quantity is excessive
When, the maintenance of nozzle also brings along substantial amounts of economic attrition, and how to improve spinning efficiency is also that method of electrostatic spinning is badly in need of research
Emphasis direction.
Centrifugal spinning is polymer melt or solution by centrifugal force and shearing force caused by high-speed rotating device
It is thrown away by pore into fine method.Compared to traditional method of electrostatic spinning, centrifugal spinning technology produces the efficient of fiber, and
And adaptability for materials is stronger, electrostatic spinning is difficult to applicable high-viscosity polymer, metal, ceramics, composite fiber etc.
Fiber is produced using centrifugal spinning.And centrifugal spinning can be by putting forward high-revolving mode, to reduce into the diameter of silk, this
A kind of new way is provided to the fibrous refinement of centrifugal spinning.But centrifugal spinning is thicker into silk diameter in itself at present,
And very high requirement is proposed to the stability and security of device during rotating speed promotion, it is very dangerous for experimental provision,
It is also very big to the loss of device.
Chinese patent 201410050160.7 and 201010184068.1 etc. proposes solution centrifugation electrostatic spinning legal system
Capillary is placed in rotating disk and centrifuges by the method for standby nanofiber, this method, and the major defect of these methods has capillary
Pipe easily blocks, device is complicated, rotary nozzle power-up is more difficult, polymer melt can not be processed, limitation is apparent.Cause
This, the present invention proposes a kind of centrifugation differential electrostatic spinning subtraction unit, can be right in the case of relatively low rotating speed and voltage
Polymer melt first carries out multiple differential, generates multiple jets, then applying centrifugal force and electrostatic force makes jet stream be sufficiently tensile refinement,
It is prepared by the efficient greenization for completing nanofiber.
The content of the invention
The present invention proposes a kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber, centrifuges stent and rotary nozzle
Separately design, rotary nozzle are fastened on by sunk screw on centrifugation main shaft, using centrifuging the runner designed on stent,
It will be in melt conveying to rotary nozzle.The device is simple, and rotary nozzle is easy to clean, solves capillary easily blocking and difficult cleaning
Etc. problems.The technical advantage of electrostatic spinning and centrifugal spinning is sufficiently used, passes through the realizations such as centrifugal force, electric field force, gravity
Further refinement to fiber, can finally receive ultra-fine equally distributed fiber on the reception device.
A kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber of the present invention, mainly including electric cabinet, centrifugal limb
Stand, sunk screw, static board track, centrifugation stent, ball-screw, heating collar, runner, frame, extruder, thermocouple, receipts
Collection band, static board, Conic nozzle, rotation axis, shaft coupling, roller, collection belt supporting frame and stepper motor, wherein Conic nozzle pass through
Sunk screw is fixed with rotation axis connection, and rotation axis is connected by shaft coupling with stepper motor.Stepper motor is connected through a screw thread
It is fixed on stent.Static board connects HV generator anode, and centrifugation stent framework is grounded, and driving motor is put in collection device
It puts on the hold-down support under centrifuging stent, roller, which is fixed on, to be collected on belt supporting frame, one of them is tensioning roller, it is being collected
It can be moved radially on belt supporting frame, to be tensioned entire conveyer belt.
A kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber of the present invention, device feed need steady so that poly-
It closes object energy molten homogeneous and flows into nozzle, be fed using single screw extrusion machine, powder adds in extruder from hopper, with spiral shell
Bar rotation is introduced into feeding section, enters back into bringing-up section, is heated to molten condition by the heating collar being wrapped in outside metering section, enters back into
In the outlet directly lower polymer flow passage in centrifugation stent.
The present invention is a kind of to be centrifuged differential method of electrostatic spinning and prepares the device of nanofiber, Conic nozzle by sunk screw with
Centrifugation main shaft is connected, and the structure of axis is connected again by shaft coupling with motor.The groundwork surface of Conic nozzle is its interior table
Face, inner surface have what etching was formed, the groove of deep about 1~2mm, and the surface and level have the angle in 15 °~20 ° angles
Melt can be made to have one section of process for being thinned and being homogenized, otherwise melt can be thrown away with drop-wise, be existed in order to ensure the polymer of addition
Under the action of gravity and centrifugal force, the end of groove can be flowed to along groove, and be unlikely to therefrom to fly out on the way, also ensure poly-
Closing object can be refined by fully differential.The polymer come out from extruder flows into centrifugation spray by centrifuging the runner in stent
Head center uniformly flows to surrounding, by groove tentatively by the polymer differential of melting under gravity, centrifugal force effect；So
Afterwards as nozzle high speed rotary polymer overcomes the influence of gravity outwards to fly away from along groove under the influence of centrifugal force, in groove
Outer end formed taylor cone；It is then influenced be subject to electric field force, polymer forms ultra-fine jet stream from taylor cone tip, in the electric field
It further stretches, refinement cooling.
A kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber of the present invention, the device stepper motor are placed on cone
Shape nozzle lower part is connected by shaft coupling and nozzle is driven to rotate.Shaft coupling selects high temperature resistant non-metal insulating material, on the one hand keeps away
Exempt to have an impact electrostatic field, on the other hand prevent heat transfer to stepper motor.Stepper motor is placed under insulating boot, is prevented
Electric field is had an impact.
A kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber of the present invention, the high-pressure electrostatic of the device are applied to
On static board, circumferentially distributed five pieces of static boards, static board can slide up and down on static board track, convenient for adjusting the receipts of fiber
Collect position, static board track is insulation light material, is the arc structure using nozzle outer edge as the center of circle, this design be in order to
Ensure that melt flies out after nozzle, uniform electric field force is subject to act on, is evenly distributed on collecting board, range of receiving is big, reduces
Downtime.
A kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber of the present invention, reception of the device for fiber,
Using conveyor type collection belt collect, due to whole device be by centrifugal spinning in a manner that electrostatic spinning is combined into
Row running, fiber is all outwards dispersing for injecting type, therefore needs to wrap entire centrifugal energy nozzle, it is ensured that collection belt can be effective
Ground all collects manufactured fiber, and secondly collection device needs sufficiently large receiving area to prevent fiber from dropping in device
On internal stent the bulk deposition of fiber is caused to be difficult to clean off.
A kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber of the present invention, the device collection belt use patent
A kind of method of " differential shunting centrifugal spinning prepares the device (patent No. 2013202399318) of nanofiber ", collection belt
By seven Rolls Positions being placed on electrostatic stent, collection belt, which is wrapped on seven rollers, forms C-shaped configuration, and indentation, there is fibre
Dimension outlet.Seven rollers sort from indentation, there, and first is driven roller, and entire collection belt system is driven to work.Other six
Roller is placed by the center of circle of nozzle, and nozzle is fully encased, and drive shaft is placed on circle periphery, and centre can increase an axis conduct
Transition.In internal six are collected roller, the fit structure clamping of the last one roller prevents from collecting belt sag, drop.Roller
Son is threaded into electrostatic stent, then is not deviated on axis by bearing and baffle ring support rollers.In addition to drive shaft, institute
There is axis upper end by the mutual supporting ＆ stablizing of a supporting rack by being similar to two semicircles, prevent axis under the tensile force of collection belt
To bent intermediate.
A kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber of the present invention, the device are using step：First,
Polymer fluid is measured by extruder feed, and is transported in the runner of centrifugation stent；Secondly, polymer is worked as
When fluid is flow to by runner on Conic nozzle, stepper motor is opened, opens simultaneously HV generator；Finally increase high pressure
The voltage of generator adjusts stepper motor rotating speed, jet stream quilt under centrifugal force, electrostatic force, air-flow and self gravitation collective effect
Slenderizing forms fiber, and deposits collection on a moving belt.
A kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber of the present invention, introduces centrifugal force and realizes to fiber
Further refinement, prepares fiber efficiency and the degree of orientation is high, have excellent performance；Static board connects HV generator anode, from
Cardiac skeleton seat lower edge is grounded, and easily forms stable electrostatic field；Jet stream is drawn by centrifugal force, electrostatic force, self gravitation effect
Stretch refinement, the fibre diameter smaller of acquisition.
Description of the drawings
Fig. 1 is a kind of schematic diagram for centrifuging differential method of electrostatic spinning and preparing nanofiber device of the present invention.
Fig. 2 is that a kind of centrifugation differential method of electrostatic spinning shown in FIG. 1 prepares nanofiber device electrostatic board mount and collection
Band winding top view.
In figure：1- electric cabinets, 2- centrifugations carrier base, 3- sunk screws, 4- static boards track, 5- centrifugations stent, 6- balls
Leading screw, 7- heating collars, 8- runners, 9- frames, 10- extruders, 11- thermocouples, 12- collection belts, 13- static boards, 14- tapered injections
Head, 15- rotation axis, 16- shaft couplings, 17- rollers, 18- collect belt supporting frame, 19- stepper motors.
Specific embodiment
A kind of centrifugation differential method of electrostatic spinning of the present invention prepares the device of nanofiber, as shown in Figure 1, mainly including：Electricity
Control case 1, centrifugation carrier base 2, sunk screw 3, static board track 4, centrifugation stent 5, ball-screw 6, heating collar 7, runner 8, frame
Frame 9, extruder 10, thermocouple 11, collection belt 12, static board 13, Conic nozzle 14, rotation axis 15, shaft coupling 16, roller 17,
Collect belt supporting frame 18 and stepper motor 19.Conic nozzle 14 is connected by sunk screw 3 with rotation axis 15, and rotation axis 15 is by shaft coupling
Device 16 is connected with stepper motor 19, and stepper motor 19 is fixed on centrifugation carrier base 2, and collection belt 12 is by being placed on collection belt supporting frame
18 seven rollers 17 position, and first is driven roller in seven rollers 17, this roller unlike other rollers is
Inc annulus, centrifugation carrier base 2 are bolted on frame 9, and static board 13 can be on static board track 4 up and down
It slides, static board 13 connects HV generator anode, and centrifugation carrier base 2 lower edge ground connection, when carrying out spinning, polymer melts
Body or solution enter in centrifugation 5 runner of stent, flow to centrifugation Conic nozzle 14, be distributed in behind its conical surface surface high-pressure electrostatic,
Fiber is drawn as under hypergravity, electrostatic force to be deposited on roller 17, is exported by roller 17 from indentation, there.
A kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber of the present invention, the device are using step：First,
Polymer fluid is measured by extruder feed, and is transported in the runner of centrifugation stent；Secondly, polymer is worked as
When fluid is flow to by runner on Conic nozzle, stepper motor is opened, opens simultaneously HV generator；Finally increase high pressure
The voltage of generator, adjusts stepper motor rotating speed, and jet stream is stretched carefully under centrifugal force, electrostatic force and self gravitation collective effect
Change, form fiber, and deposit collection on a moving belt.
For one embodiment of the invention as shown in Figure 1, carrying out centrifugation electrostatic spinning to polymer melt, feeding device 10 is crowded
Going out machine, 14 top half of Conic nozzle takes 15 ° of angles with level, and static board track 4 is the circular arc using nozzle outer edge as the center of circle,
The a diameter of 80mm in nozzle upper surface, the distance with centrifuging stent 5 are 15mm, and spinning material PP, 10 quantity delivered of extruder is 2g/
Min, rotating speed 20rpm, heating collar 7 are arranged to 240 DEG C, after object melt to be polymerized flow to 14 conical surface of Conic nozzle by runner 8
When, it is 2000r/min to start 19 rotating speed of stepper motor, and HV generator imposes 45KV voltages, and centrifugation carrier base 2 is grounded,
Tens of strands of jet streams fly to outgoing along nozzle upper surface edge is helically linear, and are deposited on roller 11, by properly increasing
HV generator voltage and motor speed can be collected into the higher fiber of the degree of orientation, and diameter reaches nanoscale, spinning
Efficiency is about 120g/h.
Claims (4)
1. a kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber, it is characterised in that：Mainly include electric cabinet, centrifugation
Carrier base, sunk screw, static board track, centrifugation stent, ball-screw, heating collar, runner, frame, extruder, thermocouple,
Collection belt, static board, Conic nozzle, rotation axis, shaft coupling, roller, collection belt supporting frame and stepper motor, wherein Conic nozzle lead to
It crosses sunk screw to fix with rotation axis connection, rotation axis is connected by shaft coupling with stepper motor；Stepper motor is connected by screw thread
It connects and is fixed on stent, static board connects HV generator anode, and centrifugation stent framework is grounded, driving motor in collection device
It is placed on the hold-down support under centrifugation stent, roller, which is fixed on, to be collected on belt supporting frame, one of them is tensioning roller, it is being received
It can be moved radially on collection belt supporting frame, to be tensioned entire conveyer belt.
2. a kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber according to claim 1, it is characterised in that：
The inner surface of Conic nozzle has the groove of 1 ~ 2mm deeply that etching is formed, and the surface and level are in 15 ° ~ 20 ° angles.
3. a kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber according to claim 1, it is characterised in that：
Stepper motor is placed on Conic nozzle lower part, is connected by shaft coupling and nozzle is driven to rotate；Shaft coupling selects high temperature resistant nonmetallic
Insulating materials.
4. a kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber according to claim 1, it is characterised in that：
High-pressure electrostatic is applied on static board, and circumferentially distributed five pieces of static boards, static board can slide up and down on static board track, just
In the collection position for adjusting fiber, static board track is insulation light material, is the arc structure using nozzle outer edge as the center of circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720947844.6U CN207435591U (en) | 2017-08-01 | 2017-08-01 | A kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720947844.6U CN207435591U (en) | 2017-08-01 | 2017-08-01 | A kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber |
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| CN207435591U true CN207435591U (en) | 2018-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720947844.6U Expired - Fee Related CN207435591U (en) | 2017-08-01 | 2017-08-01 | A kind of device for centrifuging differential method of electrostatic spinning and preparing nanofiber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107245764A (en) * | 2017-08-01 | 2017-10-13 | 北京化工大学 | It is a kind of to centrifuge the device that differential method of electrostatic spinning prepares nanofiber |
| CN108893791A (en) * | 2018-06-27 | 2018-11-27 | 武汉纺织大学 | A kind of nanofiber preparation system that centrifugation electrostatic spinning combines |
-
2017
- 2017-08-01 CN CN201720947844.6U patent/CN207435591U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107245764A (en) * | 2017-08-01 | 2017-10-13 | 北京化工大学 | It is a kind of to centrifuge the device that differential method of electrostatic spinning prepares nanofiber |
| CN108893791A (en) * | 2018-06-27 | 2018-11-27 | 武汉纺织大学 | A kind of nanofiber preparation system that centrifugation electrostatic spinning combines |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180601 Termination date: 20200801 |