CN108385174A - A kind of separation control electric field porous spherical electrostatic spinning nozzle and its spinning process - Google Patents
A kind of separation control electric field porous spherical electrostatic spinning nozzle and its spinning process Download PDFInfo
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- CN108385174A CN108385174A CN201810375660.6A CN201810375660A CN108385174A CN 108385174 A CN108385174 A CN 108385174A CN 201810375660 A CN201810375660 A CN 201810375660A CN 108385174 A CN108385174 A CN 108385174A
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- electrostatic spinning
- electric field
- porous spherical
- spinning nozzle
- spherical electrostatic
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
- D01D5/0046—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion the fibre formed by coagulation, i.e. wet electro-spinning
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0092—Electro-spinning characterised by the electro-spinning apparatus characterised by the electrical field, e.g. combined with a magnetic fields, using biased or alternating fields
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a kind of separation control electric field porous spherical electrostatic spinning nozzle and its spinning process.The nozzle includes porous spherical electrostatic spinning nozzle, is the smooth solid sphere in surface, multiple holes are distributed on spherical surface；The lower part of porous spherical electrostatic spinning nozzle is impregnated in spinning solution；Metal electric field controls ring, the anode connection of metal electric field controls ring and high pressure generator are cased on the outside of reservoir.Spinning process is：Open reception device；Open liquid feed device；Motor one is opened, makes to rotate in porous spherical electrostatic spinning nozzle spinning solution, spinning solution is respectively formed the liquid film of two states in spherical surface, hole surface；High pressure generator is opened, makes spherical surface, the liquid film of hole surface generates the jet stream of different fineness respectively, jet stream stretches solidification deposition and forms nanofiber on the reception device.The present invention can prepare the nanofiber of two or more diameters distribution, and the packing structure of controllable nanofiber in the case where not adjusting spinning parameter without using a variety of spinning solutions.
Description
Technical field
The present invention relates to a kind of separation control electric field porous spherical electrostatic spinning nozzle and its spinning process, belong to Nanowire
Peacekeeping technical field of textile machine.
Background technology
When polymer fiber diameter is down to submicron-scale or nanoscale from micro-meter scale, just will appear a series of
Surprised characteristic.Such as very big volumetric surface area, the volumetric surface area of nanofiber is substantially the 1000 of micrometer fibers
Times；It can neatly carry out surface-functionalized；Superior effect and mechanicalness are shown compared with other known materials forms
Can, such as surface and interfacial effect, small-size effect, quantum size effect and quantum tunneling effect and rigidity, tensile strength.This
A little outstanding performances make nanofiber become the preferred material of many important applications, are passed in high efficiency filter, bio-medical, intelligence
The great development potentialities in fields such as sense.Consider operation possibility, stably and controllable property (including fibre diameter and its distribution), processing
Material ranges, processing take etc., electrostatic spinning processing technology just become currently the only one kind can manufacture continuous polymer nano
The method of rice fiber.With the rise and fast development of nanometer material science, using Advance in Manufacture of Nano-fibers by Electrospinning at
For the research hotspot of science of engineering materials circle.
Traditional single needle electrostatic spinning apparatus is relatively simple, is by high voltage power supply, liquid-supplying system and collection mainly
Three parts of uniting composition.Liquid-supplying system includes micro-injection pump, medical needle tubing and flat mouth metal needle, and high polymeric solution flow is by micro-
Syringe pump control is measured, the anode of high voltage power supply is connect with flat mouth metal needle, and collection system is metal plate and is grounded.High-voltage electricity
Source voltage gradually increases, and the drop of metal needle gradually forms taylor cone, when high-voltage power voltage further increases, electric field force meeting
The effects that surface tension, viscous force for overcoming high polymeric solution, forms small straight jet and then will appear the dynamic phenomenon arrival of whip
Grounded metal collecting board, in this process, solvent volatilization, high polymer are formed by curing nanofibres deposit in metal collection plate
On.
The nanofiber yield that traditional electrostatic spinning apparatus obtains is very low, it is difficult to meet nanofiber when widely applying
Demand, single needle electrostatic spinning apparatus there is also syringe needle be easy block the problem of, this can seriously affect nanofiber spinning
Process is smoothed out.
Current Electrospun nano-fibers mass preparation facilities has some reports both at home and abroad.Chinese patent
200710036447.4 disclose a kind of jet type electrostatic spinning equipment, and the device is poly- in height by being passed through gas in liquid bath bottom
Object free surface forms bubble, and bubble forms taylor cone and more jet streams to improve nanofiber yield under electric field force effect, but
There are many bubble fragments that shape size differs to be stretched by electric field force while bubble formation taylor cone in mechanism ruptures, and causes
The diameter wider distribution of fiber.And larger high polymer free surface solvent highly volatile, spinning direction are limited；Chinese patent
201310032194.9 disclosing a kind of umbrella-shaped electrostatic spinning sprayer and electrostatic spinning method, Nanowire may be implemented in this method
Prepared by the mass of dimension, but the solution Free Surface of umbrella shower nozzle is contacted with atmospheric environment, solvent highly volatile, to influence
To the stability of spinning and the quality of final nanofiber, and free surface edge solution curvature can not regulate and control；Chinese patent
201510278266.7 disclose a kind of jet auxiliary Multi needle electrostatic spinning apparatus, which can improve in the unit interval and receive
The yield of rice fiber, spinning direction is unrestricted, but there are the susceptible to plugging disadvantages of syringe needle, meanwhile, the arrangement mode of syringe needle will be examined
Influencing each other between electric field after applying high-pressure electrostatic is considered, so the design of Multi needle electrostatic spinning apparatus is relatively complicated and multiple
It is miscellaneous, it is difficult to realize the controllable nanofiber product of mass production distribution of fiber diameters.
Inventor also discloses that a series of mass electrostatic spinning apparatus, including a kind of 201710684508.1 spinning of ZL
The electrostatic spinning apparatus and its application method of liquid curvature dynamic control, a kind of 201710044752.1 spiral goove flute profile electrostatic of ZL
Device for spinning and its application method, a kind of cyclic annular rotary brush electrostatic spinning apparatus of ZL 201710044800.7 and its user
Method, a kind of brush mass electrostatic spinning apparatus of 201710046822.7 ball shape rotaries of ZL and its application method, ZL 2016
10629977.9, a kind of linear channel-shaped needle-free electrostatic spinning apparatus and spinning process, ZL 2,016 10296863.7 are a kind of
Double circular slots formula electrostatic spinning apparatus and method, a kind of 2,015 10831359.8 zigzag ring-type needle-free Static Spinnings of ZL
Silk device and its application method etc., these patents are all based on the regulation and control and optimization of nanofiber single diameter distribution.And it is learning
In many applications such as filtering, the energy, sensing, biological medicine of art circle and industrial quarters concern, can finely regulating electrostatic spinning receive
Rice fiber assembly structure is to further increase properties of product, while it is particularly important to realize prepared by its mass.
Invention content
Technical problem to be solved by the invention is to provide a kind of separation control electric field porous spherical electrostatic spinning nozzle and
Its application method, the distribution of fiber stepped diameters is uncontrollable during solving current batch electrostatic spinning, and more fluidic spaces distributions are difficult
Regulation and control, the single problem of nanofiber membrane structure realize the one-step method batch of controllable multi-level diameter distribution nanofiber aggregate
Change and prepares.
The present invention solve above-mentioned technical problem used technical solution be：A kind of separation control electric field porous spherical is quiet
Electrospun nozzle, which is characterized in that be the smooth solid sphere in surface, spherical surface including porous spherical electrostatic spinning nozzle
On multiple holes are distributed with；Porous spherical electrostatic spinning nozzle is connect by transmission shaft with motor one, the spray of porous spherical electrostatic spinning
The lower part of head is impregnated in the spinning solution in reservoir, and liquid feed device is connected to by peristaltic pump with the bottom of reservoir；Reservoir
Outside is cased with metal electric field controls ring, the anode connection of metal electric field controls ring and high pressure generator；Porous spherical electrostatic spinning
The top of nozzle is equipped with reception device.
Preferably, the material of the solid sphere is polytetrafluoroethylene (PTFE), a diameter of 30~250mm.
Preferably, the hole is evenly and symmetrically distributed on spherical surface, and the quantity in hole is 1~800, a diameter of 1~12mm,
Depth is 1~30mm.
Preferably, the depth of the chamfering structure that the hole extends at spherical surface to outer rim, chamfering structure is 0~10mm.
Preferably, the material of the reservoir is polytetrafluoroethylene (PTFE), and structure is the cylinder of 40~300mm of basal diameter
Body.
Preferably, the metal electric field controls ring fits with reservoir outer wall, and the internal diameter of metal electric field controls ring is 40
~300mm, wall thickness are 2~10mm, a height of 5~100mm；Metal electric field controls ring and the porous spherical electrostatic spinning nozzle centre of sphere
Relative altitude is adjustable, and adjustable extent is 0~100mm.
Preferably, the voltage regulation limits of the high pressure generator are 0-120kV.
Preferably, the transmission shaft and the diameter co-axial of solid sphere are arranged.
Preferably, the rotating speed of the motor one is 0~20r/min.
Preferably, the reception device includes the metal roller of translator two, metal roller ground connection or and high pressure generator
Cathode connection.
Preferably, the rotating speed of a diameter of 100~1200mm of the metal roller, motor two are 0-120r/min.
Preferably, the liquid feed device is equipped with the temperature regulating device for controlling spinning solution temperature, and temperature controlling range is -5
~60 DEG C.
The present invention also provides a kind of electrospinning process, which is characterized in that controls electric field porous ball using above-mentioned separation
Shape electrostatic spinning nozzle, includes the following steps：
Step 1)：The distance between reception device and porous spherical electrostatic spinning nozzle are adjusted, reception device is opened；
Step 2)：Liquid feed device is opened, the temperature of spinning solution is adjusted, spinning solution is injected into reservoir by peristaltic pump；
Step 3)：Motor one is opened, rotating speed is set, makes to rotate in porous spherical electrostatic spinning nozzle spinning solution, spinning solution
It is respectively formed the liquid film of two states in spherical surface, hole surface；
Step 4)：High pressure generator is opened, voltage is slowly increased to required spinning voltage, makes the liquid film of spherical surface, hole surface
The first jet stream, the second jet stream of different fineness are generated respectively, and jet stream flies to reception device under high voltage electrostatic field, and solvent is waved
After hair, jet stream stretches solidification deposition and forms nanofiber on the reception device.
The present invention is using separation control electric field loop come the field distribution for regulating and controlling spherical nozzle surface and more jet stream motional electric fields
Form realizes that high polymer spinning solution is formed simultaneously two kinds of spinning shaped liquid films in nozzle surface using porous spherical electrostatic spinning nozzle
State, one is the liquid film formed on ball surface, another kind is distributed across the liquid film at spherical surface.Further realize nozzle surface
Initial more jet stream patterns and more jet streams distribution regulation and control and the regulation and control of more jet stream motion paths, then realize the distribution of controllable multi-level diameter
Nanofiber one-step method mass production, the technology can be made in the case where not adjusting spinning parameter without using a variety of spinning solutions
The nanofiber of standby two or more diameters distribution, and the packing structure of controllable nanofiber, this is technically simple easy, in energy
Source, filtering, biology, medical field application great potential.
Description of the drawings
Fig. 1 is the schematic diagram that separation provided by the invention controls electric field porous spherical electrostatic spinning nozzle；
Fig. 2 is the schematic diagram of porous spherical electrostatic spinning nozzle；
Fig. 3 is the perspective view of porous spherical electrostatic spinning nozzle.
Specific implementation mode
In order to make the present invention more obvious and understandable, hereby with preferred embodiment, and attached drawing is coordinated to be described in detail below.
The separation control electric field porous spherical electrostatic spinning nozzle that embodiment 1-3 is used is as shown in Figs. 1-3, porous spherical
Electrostatic spinning nozzle 5 is the smooth solid sphere in surface, multiple holes 13 is distributed on spherical surface 12；The material of solid sphere
For polytetrafluoroethylene (PTFE), a diameter of 30~250mm.Hole 13 is evenly and symmetrically distributed on spherical surface 12, and the quantity in hole 13 is 1~
800, a diameter of 1~12mm, depth are 1~30mm.The chamfering structure that hole 13 extends at spherical surface 12 to outer rim, chamfering knot
The depth of structure is 0~10mm.
Porous spherical electrostatic spinning nozzle 5 is connect by the transmission shaft 4 of insulation with motor 1, transmission shaft 4 and solid sphere
Diameter co-axial arrangement；The rotating speed of motor 1 is 0~20r/min.The lower part of porous spherical electrostatic spinning nozzle 5 is impregnated in storage
In spinning solution 15 in liquid bath 14, liquid feed device 17 is connected to by peristaltic pump 16 with the bottom of reservoir 14；The material of reservoir 2
For polytetrafluoroethylene (PTFE), structure is the cylinder of 40~300mm of basal diameter.Liquid feed device 17 is equipped with for controlling spinning solution 15
The temperature regulating device of temperature, temperature controlling range are -5~60 DEG C.
14 outside of reservoir is cased with metal electric field controls ring 2, and metal electric field controls ring 2 and the anode of high pressure generator 1 connect
It connects.Metal electric field controls ring 2 fits with 14 outer wall of reservoir, and the internal diameter of metal electric field controls ring 2 is 40~300mm, wall thickness
For 2~10mm, a height of 5~100mm；The relative altitude of metal electric field controls ring 2 and 5 centre of sphere of porous spherical electrostatic spinning nozzle can
It adjusts, adjustable extent is 0~100mm.The voltage regulation limits of high pressure generator 1 are 0-120kV.Porous spherical electrostatic spinning nozzle
5 top is equipped with reception device, and reception device includes the metal roller 7 of translator 26, the ground connection of metal roller 79 or with high pressure
The cathode connection of raw device 1.The rotating speed of a diameter of 100~1200mm of metal roller 7, motor 26 are 0-120r/min.
Embodiment 1
A kind of electrospinning process：
Spinning solution 15 is prepared using polyacrylonitrile (PAN) and the prepared high polymeric solution of N-N dimethylformamides (DMF)
The nanofiber of controllable multi-level diameter distribution.The mass fraction for preparing PAN high polymeric solutions is 10%.
Select jet diameters for 60mm；A hole 13 is distributed on its spherical surface 12；Hole 13 is evenly and symmetrically divided on spherical surface 12
The quantity of cloth, hole 13 is 60, a diameter of 4mm, depth 5mm.The chamfering structure that hole 13 extends at spherical surface 12 to outer rim,
The depth of chamfering structure is 1mm.
Metal roller 7 is grounded 9, metal roller 7 is adjusted and porous spherical electrostatic spinning nozzle 5 (uses a diameter of 60mm
Polytetrafluoroethylene (PTFE) sphere) distance be 22cm；The internal diameter for adjusting metal electric field controls ring 2 is 80mm；Adjust metal electric field control
The relative altitude of ring 2 processed and porous spherical electrostatic spinning nozzle 5 is 10mm；Motor 26 is opened, and 7 rotating speed of metal roller is set
For 80r/min；The switch of liquid feed device 17 is opened, the temperature for adjusting spinning solution 15 is room temperature, by peristaltic pump 16 to reservoir
Spinning solution 15 is injected in 14；Motor 1 is opened, and it is 0.5r/min that rotating speed, which is arranged, motor 1 drives porous ball through transmission shaft 4
Shape electrostatic spinning nozzle 5 rotates in spinning solution 15, and spherical surface 12,13 surface of hole are respectively formed two states liquid film；Open high pressure
Generator 1 switchs, and is slowly increased voltage to 80kV；First jet stream 10 of different fineness, the second jet stream 11 are respectively in spherical surface 12, hole
It is generated at 13 surface liquid films；Two kinds of jet streams fly to metal roller 7 under high voltage electrostatic field, and solvent volatilizees, the first jet stream 10,
Second jet stream 11 stretches solidification and is deposited on the nanofiber 8 for forming certain deposition radius on metal roller 7.
Embodiment 2
A kind of electrospinning process：
Spinning solution 15 is prepared using polyacrylonitrile (PAN) and the prepared high polymeric solution of N-N dimethylformamides (DMF)
The nanofiber of controllable multi-level diameter distribution.The mass fraction for preparing PAN high polymeric solutions is 12%.
Select jet diameters for 60mm；A hole 13 is distributed on its spherical surface 12；Hole 13 is evenly and symmetrically divided on spherical surface 12
The quantity of cloth, hole 13 is 60, a diameter of 4mm, depth 10mm.The chamfering knot that hole 13 extends at spherical surface 12 to outer rim
The depth of structure, chamfering structure is 1mm.
Metal roller 7 is grounded 9, metal roller 7 is adjusted and porous spherical electrostatic spinning nozzle 5 (uses a diameter of 80mm
Polytetrafluoroethylene (PTFE) sphere) distance be 17cm；The internal diameter for adjusting metal electric field controls ring 2 is 100mm；Adjust metal electric field control
The relative altitude of ring 2 processed and porous spherical electrostatic spinning nozzle 5 is 10mm；Motor 26 is opened, and 7 rotating speed of metal roller is set
For 80r/min；The switch of liquid feed device 17 is opened, the temperature for adjusting spinning solution 15 is room temperature, by peristaltic pump 16 to reservoir
Spinning solution 15 is injected in 14；Motor 1 is opened, and it is 2r/min that rotating speed, which is arranged, motor 1 drives porous spherical through transmission shaft 4
Electrostatic spinning nozzle 5 rotates in spinning solution 15, and spherical surface 12,13 surface of hole are respectively formed two states liquid film；Open high pressure
Raw device 1 switchs, and is slowly increased voltage to 75kV；First jet stream 10 of different fineness, the second jet stream 11 are respectively in spherical surface 12, hole 13
It is generated at the liquid film of surface；Two kinds of jet streams fly to metal roller 7 under high voltage electrostatic field, solvent volatilization, the first jet stream 10, the
Two jet streams 11 stretch solidification and are deposited on the nanofiber 8 for forming certain deposition radius on metal roller 7.
Embodiment 3
A kind of electrospinning process：
Spinning solution 15 is prepared using polyacrylonitrile (PAN) and the prepared high polymeric solution of N-N dimethylformamides (DMF)
The nanofiber of controllable multi-level diameter distribution.The mass fraction for preparing PAN high polymeric solutions is 9%.
Select jet diameters for 60mm；A hole 13 is distributed on its spherical surface 12；Hole 13 is evenly and symmetrically divided on spherical surface 12
The quantity of cloth, hole 13 is 60, a diameter of 6mm, depth 10mm.The chamfering knot that hole 13 extends at spherical surface 12 to outer rim
The depth of structure, chamfering structure is 1mm.
Metal roller 7 is grounded 9, metal roller 7 is adjusted and porous spherical electrostatic spinning nozzle 5 (uses a diameter of 80mm
Polytetrafluoroethylene (PTFE) sphere) distance be 15cm；The internal diameter for adjusting metal electric field controls ring 2 is 100mm；Adjust metal electric field control
The relative altitude of ring 2 processed and porous spherical electrostatic spinning nozzle 5 is 5mm；Motor 26 is opened, and 7 rotating speed of metal roller is set and is
60r/min；The switch of liquid feed device 17 is opened, the temperature for adjusting spinning solution 15 is room temperature, by peristaltic pump 16 to reservoir 14
Middle injection spinning solution 15；Motor 1 is opened, and it is 0.5r/min that rotating speed, which is arranged, motor 1 drives porous spherical through transmission shaft 4
Electrostatic spinning nozzle 5 rotates in spinning solution 15, and spherical surface 12,13 surface of hole are respectively formed two states liquid film；Open high pressure
Raw device 1 switchs, and is slowly increased voltage to 85kV；First jet stream 10 of different fineness, the second jet stream 11 are respectively in spherical surface 12, hole 13
It is generated at the liquid film of surface；Two kinds of jet streams fly to metal roller 7 under high voltage electrostatic field, solvent volatilization, the first jet stream 10, the
Two jet streams 11 stretch solidification and are deposited on the nanofiber 8 for forming certain deposition radius on metal roller 7.
Claims (13)
1. a kind of separation controls electric field porous spherical electrostatic spinning nozzle, which is characterized in that sprayed including porous spherical electrostatic spinning
Head (5) is the smooth solid sphere in surface, multiple holes (13) is distributed on spherical surface (12)；Porous spherical electrostatic spinning sprays
Head (5) is connect by transmission shaft (4) with motor one (3), and the lower part of porous spherical electrostatic spinning nozzle (5) is impregnated in reservoir
(14) in the spinning solution (15) in, liquid feed device (17) is connected to by peristaltic pump (16) with the bottom of reservoir (14)；Reservoir
(14) outside is cased with metal electric field controls ring (2), and metal electric field controls ring (2) is connect with the anode of high pressure generator (1)；It is porous
The top of spherical electrostatic spinning nozzle (5) is equipped with reception device.
2. separation control electric field porous spherical electrostatic spinning nozzle as described in claim 1, which is characterized in that the medicine ball
The material of body is polytetrafluoroethylene (PTFE), a diameter of 30~250mm.
3. separation control electric field porous spherical electrostatic spinning nozzle as described in claim 1, which is characterized in that the hole (13)
It being evenly and symmetrically distributed on spherical surface (12), the quantity of hole (13) is 1~800, a diameter of 1~12mm, depth is 1~
30mm。
4. the separation as described in claim 1 or 3 controls electric field porous spherical electrostatic spinning nozzle, which is characterized in that the hole
(13) it is the chamfering structure extended to outer rim at spherical surface (12), the depth of chamfering structure is 0~10mm.
5. separation control electric field porous spherical electrostatic spinning nozzle as described in claim 1, which is characterized in that the reservoir
(2) material is polytetrafluoroethylene (PTFE), and structure is the cylinder of 40~300mm of basal diameter.
6. separation control electric field porous spherical electrostatic spinning nozzle as described in claim 1, which is characterized in that the metal electricity
Field control ring (2) fits with reservoir (14) outer wall, and the internal diameter of metal electric field controls ring (2) is 40~300mm, wall thickness 2
~10mm, a height of 5~100mm；The relative altitude of metal electric field controls ring (2) and porous spherical electrostatic spinning nozzle (5) centre of sphere
Adjustable, adjustable extent is 0~100mm.
7. separation control electric field porous spherical electrostatic spinning nozzle as described in claim 1, which is characterized in that the high pressure
The voltage regulation limits of raw device (1) are 0-120kV.
8. separation control electric field porous spherical electrostatic spinning nozzle as described in claim 1, which is characterized in that the transmission shaft
(4) it is arranged with the diameter co-axial of solid sphere.
9. separation control electric field porous spherical electrostatic spinning nozzle as described in claim 1, which is characterized in that the motor one
(3) rotating speed is 0~20r/min.
10. separation control electric field porous spherical electrostatic spinning nozzle as described in claim 1, which is characterized in that the reception
Device includes the metal roller (7) of translator two (6), and metal roller (7) is grounded (9) or connects with the cathode of high pressure generator (1)
It connects.
11. separation control electric field porous spherical electrostatic spinning nozzle as claimed in claim 10, which is characterized in that the metal
The rotating speed of a diameter of 100~1200mm of roller (7), motor two (6) are 0-120r/min.
12. separation control electric field porous spherical electrostatic spinning nozzle as described in claim 1, which is characterized in that the feed flow
Device (17) is equipped with the temperature regulating device for controlling spinning solution (15) temperature, and temperature controlling range is -5~60 DEG C.
13. a kind of electrospinning process, which is characterized in that control electric field using the separation described in claim 1-12 any one
Porous spherical electrostatic spinning nozzle, includes the following steps：
Step 1)：The distance between reception device and porous spherical electrostatic spinning nozzle (5) are adjusted, reception device is opened；
Step 2)：Liquid feed device (17) is opened, the temperature of spinning solution (15) is adjusted, by peristaltic pump (16) into reservoir (14)
Inject spinning solution (15)；
Step 3)：Motor one (3) is opened, rotating speed is set, makes rotation in porous spherical electrostatic spinning nozzle (5) spinning solution (15),
Spinning solution (15) is respectively formed the liquid film of two states on spherical surface (12), hole (13) surface；
Step 4)：High pressure generator (1) is opened, voltage is slowly increased to required spinning voltage, makes spherical surface (12), hole (13) surface
Liquid film generate the first jet stream (10) of different fineness, the second jet stream (11) respectively, jet stream is flown under high voltage electrostatic field
Reception device, after solvent volatilization, jet stream stretches solidification deposition and forms nanofiber (8) on the reception device.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629015A (en) * | 2018-12-28 | 2019-04-16 | 李瑞锋 | A kind of separation control electric field Round Porous cylindricality electrostatic spinning apparatus and its spinning process |
| CN109778324A (en) * | 2019-01-25 | 2019-05-21 | 青岛科技大学 | A kind of spherical shape free interface melt electrostatic spinning device |
| CN110306245A (en) * | 2019-06-28 | 2019-10-08 | 大连沃隆峰英鸿纳米科技有限公司 | A kind of Electrospun nano-fibers polymer spinneret syringe needle |
| CN112958305A (en) * | 2021-02-04 | 2021-06-15 | 南京微毫科技有限公司 | Electric field distribution control device, method and equipment for electrostatic spray nozzle array and computer storage medium |
| CN113718349A (en) * | 2021-09-14 | 2021-11-30 | 鑫合德(清远)智能科技发展有限公司 | Electrostatic spinning spray head structure based on capillary principle and using method thereof |
| CN115449908A (en) * | 2022-09-28 | 2022-12-09 | 河南农业大学 | Electrostatic spinning nozzle device with adjustable spacing |
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| CN109778324B (en) * | 2019-01-25 | 2023-09-15 | 青岛科技大学 | Spherical free interface melt electrostatic spinning device |
| CN110306245A (en) * | 2019-06-28 | 2019-10-08 | 大连沃隆峰英鸿纳米科技有限公司 | A kind of Electrospun nano-fibers polymer spinneret syringe needle |
| CN112958305A (en) * | 2021-02-04 | 2021-06-15 | 南京微毫科技有限公司 | Electric field distribution control device, method and equipment for electrostatic spray nozzle array and computer storage medium |
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Application publication date: 20180810 |