CN108611687A - A kind of porous nano-fibre mass preparation facilities and its application method - Google Patents
A kind of porous nano-fibre mass preparation facilities and its application method Download PDFInfo
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- CN108611687A CN108611687A CN201810417374.1A CN201810417374A CN108611687A CN 108611687 A CN108611687 A CN 108611687A CN 201810417374 A CN201810417374 A CN 201810417374A CN 108611687 A CN108611687 A CN 108611687A
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- porous nano
- spinning solution
- fibre
- solvent
- spinning
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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
- D01D5/0038—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion the fibre formed by solvent evaporation, i.e. dry 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
-
- 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
- D01D5/18—Formation of filaments, threads, or the like by means of rotating spinnerets
Abstract
The present invention provides a kind of porous nano-fibre mass preparation facilities and its application methods.The porous nano-fibre mass preparation facilities, which is characterized in that including：Porous nano-fibre device for spinning is respectively used to spinning solution liquid-supplying system and raw hole solvent feed system to porous nano-fibre device for spinning supply spinning solution and raw hole solvent, and the porous nano-fibre collection device for collecting porous nano-fibre；Wherein, the porous nano-fibre device for spinning includes the spherical nozzle that can be rotated, for condensing upon spherical nozzle surface after making raw hole solvent volatilization and coating the device of a floor height polymers spinning solution again in the spherical nozzle surface and for forming jet stream in spherical nozzle surface, jet stream is made to fly to the device that porous nano-fibre collection device forms porous nano-fibre under high voltage electrostatic field.The technology of the present invention is simple and practicable, in the energy, filtering, biology, medical field application great potential.
Description
Technical field
The invention belongs to porous nano-fibre, electrostatic spinning technique and technical field of textile machine, more particularly to a kind of more
Hole nano fiber batch preparation facilities and its application method.
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.
Electrospun nano-fibers have very high specific surface area, but are wanted in catalysis, biology, the porous fiber of adsorbing domain
Advantageously than smooth fiber.Chinese patent ZL 201110168799.1, which is disclosed, a kind of preparing porous high-specific surface area
The method of nanofiber, by PEO/CHCl3Solution and DMF/CHCl3Solution is mixed with PAN/DMF solution again after being mixed evenly
It stirs evenly, nanofiber is obtained by traditional single needle electrostatic spinning, impregnate 10 minutes and remove in 70 degrees Celsius of warm water
PEO is dried in vacuo 4h porous nano-fibres derived above, and porous nano-fibre can be prepared in this method, but operates
Journey is cumbersome, prepares low output；Chinese patent ZL 201110375234.0 is disclosed prepares polyalcohol stephanoporate by mixing phase separation
Polymer, additive and solvent are mixed in a certain ratio by the method for nanofiber, heating stirring to be completely dissolved to be formed it is transparent
Solution is carried out electrostatic spinning by solution, and as-spun fibre is deposited on ice-water bath or temperature in 0~20 DEG C of water-bath, to occur thermotropic
Phase separation and phase separation extract remaining solvent and additive by post-processing, obtain polyalcohol stephanoporate Nanowire
Dimension, this method can obtain porous nano-fibre by temperature and dicyandiamide solution regulation and control phase separation, but regulating and controlling temperature is needed to exist
It is carried out in water-bath and prepares low output.
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
ZL200710036447.4 discloses a kind of jet type electrostatic spinning equipment, and the device in liquid bath bottom by being passed through gas in height
Polymers 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 makes
At the diameter wider distribution of fiber.And larger high polymer free surface solvent highly volatile, spinning direction are limited；It is Chinese special
Sharp ZL 201310032194.9 discloses a kind of umbrella-shaped electrostatic spinning sprayer and electrostatic spinning method, and this method may be implemented
Prepared by the mass of nanofiber, but the solution Free Surface of umbrella shower nozzle is contacted with atmospheric environment, solvent highly volatile, to
Influence whether the stability of spinning and the quality of final nanofiber, and free surface edge solution curvature can not regulate and control；In
State patent ZL 201510278266.7 discloses a kind of jet auxiliary Multi needle electrostatic spinning apparatus, which can improve list
The yield of nanofiber in the time of position, spinning direction is unrestricted, but there are the susceptible to plugging disadvantages of syringe needle, meanwhile, the row of syringe needle
Row mode will consider to apply influencing each other between electric field after high-pressure electrostatic, thus the design of Multi needle electrostatic spinning apparatus compared with
It is cumbersome and complicated, it is difficult to realize the narrow nanofiber product of mass production distribution of fiber diameters.The Chinese patent of inventor
ZL 201710046822.7 discloses a kind of brush mass electrostatic spinning apparatus of ball shape rotary and its application method and can realize
Nanofiber yield and diameter distributed controll is greatly improved in spherical surface liquid film spinning solution spinning, but still lacks at present more
It is prepared by hole nano fiber batchization.
Prepare the spinning solution stage by non-solvent system mixing hardly result in stable mixed solution, once stop stir
It mixes, whole system develops the direction reunited to phase patibhaga-nimitta, so being difficult to the porous nano-fibre production of continuously obtained uniform, controllable
Product.
Invention content
Technical problem to be solved by the invention is to provide a kind of porous nano-fibre mass preparation facilities and its uses
Method solves current porous nano-fibre and prepares low output, porous nano-fibre structure regulating hardly possible, is difficult to asking for industrialization production
Topic.
In order to solve the above technical problem, the present invention provides a kind of porous nano-fibre mass preparation facilities, special
Sign is, including：Porous nano-fibre device for spinning is respectively used to supply spinning solution and life to porous nano-fibre device for spinning
The spinning solution liquid-supplying system of hole solvent and raw hole solvent feed system, and the porous nano for collecting porous nano-fibre are fine
Tie up collection device；Wherein, the porous nano-fibre device for spinning includes the spherical nozzle that can be rotated, for making raw Kong Rong
Agent volatilization after condense upon spherical nozzle surface and the spherical nozzle surface coat again a floor height polymers spinning solution device,
And for forming jet stream in spherical nozzle surface, so that jet stream is flown to porous nano-fibre under high voltage electrostatic field and collect dress
Set the device to form porous nano-fibre.
Preferably, the spinning solution liquid-supplying system includes spinning solution reservoir, spinning solution peristaltic pump, spinning solution drain
Pipe, spinning solution peristaltic pump connect spinning solution reservoir and spinning solution catheter, and spinning solution catheter connects porous nano-fibre and spins
Silk device.
Preferably, the life hole solvent feed system includes raw hole solvent stock slot, raw hole solvent peristaltic pump and raw hole
Solvent catheter, the raw raw hole solvent stock slot of hole solvent peristaltic pump connection and raw hole solvent catheter, raw hole solvent catheter connect
Connect porous nano-fibre device for spinning.
Preferably, the spinning solution reservoir, spinning solution peristaltic pump, spinning solution catheter, raw hole solvent stock slot, life
Hole solvent peristaltic pump, raw hole solvent catheter material are polytetrafluoroethylene (PTFE).
Preferably, described for condensing upon spherical nozzle surface after making raw hole solvent volatilization and in the spherical nozzle
The device that surface coats a floor height polymers spinning solution again includes that teflon insulation seat, nozzle rotation control motor and insulation pass
Moving axis, the teflon insulation seat are equipped with liquid bath to be spun and raw hole solvent feed trough, and liquid bath to be spun is supplied with spinning solution
Liquid system connects and is used to store spinning solution, and raw hole solvent feed trough connect with raw hole solvent feed system and is used to store raw hole
A part for solvent, the spherical nozzle is set on the upside of raw hole solvent feed trough, and a part is set in liquid bath to be spun, screw
Shape nozzle connects insulated transmission axis, and insulated transmission axis connection nozzle rotation control motor, nozzle rotation control motor can be through exhausted
Edge transmission shaft drives spherical sprinkler rotation, and spherical nozzle surface is condensed upon after the life hole solvent volatilization in raw hole solvent feed trough,
Spherical nozzle rotates under the drive that nozzle rotates control motor in liquid bath to be spun, and the spherical nozzle surface coats one again
Floor height polymers spinning solution.
It is highly preferred that described is used to form jet stream in spherical nozzle surface, jet stream is made to fly under high voltage electrostatic field
The device that porous nano-fibre is formed to porous nano-fibre collection device includes high-voltage positive electrode bearing interface and high-voltage conducting wires, height
Positive pressure polar axis birdsmouth is sleeved on insulated transmission axis, and high-voltage positive electrode bearing interface one end is connected with high pressure generator anode,
The other end is reliably connected by high-voltage conducting wires and spherical nozzle.
It is highly preferred that the porous nano-fibre collection device is the cylindrical metal roller that can be rotated, by can
The driving motor of speed governing drives.
It is highly preferred that the material of the rotary spherical nozzle is stainless steel or metallic copper.
It is highly preferred that the nozzle rotation control motor includes PLC programming modules, rotary speed, torque and side can be set
To.
It is highly preferred that the spinning solution liquid-supplying system supplies spinning solution, liquid supply speed by the spinning solution peristaltic pump of insulation
For 0-10mL/min, spinning solution is pumped out from spinning solution reservoir into liquid bath to be spun.
It is highly preferred that the raw hole solvent feed system supplies raw hole solvent to life by the life hole solvent peristaltic pump of insulation
Hole solvent feed trough, feed speed 0-4mL/min.
It is highly preferred that the spinning solution liquid-supplying system and the controllable spinning solution of raw hole solvent feed system and raw hole solvent
Temperature is -5 degrees Celsius -60 degrees Celsius.
It is highly preferred that the high pressure generator voltage regulation limits are 0-120KV.
It is highly preferred that the insulated transmission axis is polytetrafluoroethylene (PTFE) material, it is set at spherical nozzle axle center.
It is highly preferred that the rotation control motor is the motor of adjustable speed, motor speed 0-20r/min is compiled by PLC
Journey module controls.
It is highly preferred that the porous nano-fibre collection device is grounded or is connected with high pressure generator cathode.
It is highly preferred that a diameter of 90mm-1200mm of the metal roller, the rotating speed of driving motor is 0-150r/min.
The present invention also provides carry out porous nano-fibre batch using above-mentioned porous nano-fibre mass preparation facilities
The method for measuring production, which is characterized in that include the following steps：
Step 1：Metal roller is grounded, the distance of adjustment metal roller and spherical nozzle；
Step 2：The driving motor of metal roller is opened, and drum rotation speed is set；
Step 3：The switch for opening raw hole solvent feed system adjusts raw hole solvent temperature, passes through the life hole solvent of insulation
Peristaltic pump supplies raw hole solvent to raw hole solvent feed trough；
Step 4：Spinning solution liquid-supplying system switch is opened, spinning solution temperature is adjusted, is supplied by the spinning solution peristaltic pump of insulation
To spinning solution to liquid bath to be spun；
Step 5：The driving motor of spherical nozzle is opened, and spinning rotation program is set, the life hole solvent of certain temperature is waved
Spherical nozzle surface is condensed upon after hair, rotation control motor drives spherical nozzle rotation through insulated transmission axis, then coats a floor height
Polymers spinning solution；
Step 6：High pressure generator switch is opened, increases voltage to required spinning voltage；A large amount of jet streams are in spherical nozzle
It is generated at liquid film, jet stream flies to metal roller, solvent volatilization under high voltage electrostatic field, and jet stream stretches solidification and is deposited on metal
A large amount of porous nano-fibres are formed on roller.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention relates to a kind of porous nano-fibre mass preparation facilities and its application methods.Beneficial effects of the present invention
It is to supply one layer of very thin solvent in nozzle surface by the agglutination of gas phase state solvent using raw hole solvent feed system, passes through
The infiltration capacity of the raw hole solvent of temperature difference regulation and control of spinning solution and raw hole solvent is, it can be achieved that during free surface electrostatic spinning
It is even that micro raw hole solvent is injected into jet stream, the regulation and control of porous nano-fibre mass preparation process, the technology is furthermore achieved
It is simple and practicable, in the energy, filtering, biology, medical field application great potential.
Description of the drawings
A kind of porous nano-fibre mass preparation facilities schematic diagrames of Fig. 1；
Fig. 2 spherical shape nozzle surface liquid film schematic diagrames；
Fig. 3 spherical shape nozzle jet stream schematic diagrames；
The scanning electron microscope (SEM) photograph for the porous nano-fibre that Fig. 4 porous nano-fibre mass devices are prepared into.
Specific implementation mode
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, people in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiment 1
As shown in Figure 1, the porous nano-fibre mass preparation facilities of the present invention includes porous nano-fibre device for spinning,
It is respectively used to spinning solution liquid-supplying system and the raw hole solvent to porous nano-fibre device for spinning supply spinning solution and raw hole solvent
Feed system, and the porous nano-fibre collection device for collecting porous nano-fibre.
The porous nano-fibre device for spinning includes the spherical nozzle 15 that can be rotated, for making raw hole solvent volatilization
Condense upon afterwards 15 surface of spherical nozzle and 15 surface of spherical nozzle coat again a floor height polymers spinning solution 22 device,
And for forming jet stream on 15 surface of spherical nozzle, jet stream is made to fly to porous nano-fibre collection under high voltage electrostatic field
Device forms the device of porous nano-fibre.
The spinning solution liquid-supplying system is for supplying high polymer spinning solution 22, including spinning solution reservoir 23, spinning solution
Peristaltic pump 20, spinning solution catheter 17, spinning solution peristaltic pump 20 connect spinning solution reservoir 23 and spinning solution catheter 17, spinning
Liquid catheter 17 connects porous nano-fibre device for spinning.
The life hole solvent feed system is aggregated by gas phase state solvent and supplies one layer very on 15 surface of spherical nozzle
Thin life hole solvent 2, including raw hole solvent stock slot 1, raw hole solvent peristaltic pump 21 and raw hole solvent catheter 3, raw hole solvent
The raw hole solvent stock slot 1 of the connection of peristaltic pump 21 and raw hole solvent catheter 3, raw hole solvent catheter 3 connect porous nano-fibre
Device for spinning.
It is the spinning solution reservoir 23, spinning solution peristaltic pump 20, spinning solution catheter 17, raw hole solvent stock slot 1, raw
Hole solvent peristaltic pump 21, raw 3 material of hole solvent catheter are polytetrafluoroethylene (PTFE).
Described condenses upon 15 surface of spherical nozzle and in 15 table of spherical nozzle for making to give birth to after hole solvent volatilizees
The device that face coats a floor height polymers spinning solution 22 again include teflon insulation seat 19, nozzle rotation control motor 7 and absolutely
Edge transmission shaft 6, the teflon insulation seat 19 are equipped with liquid bath 16 to be spun and raw hole solvent feed trough 18, liquid bath to be spun
16 connect with spinning solution liquid-supplying system and are used to store spinning solution, and raw hole solvent feed trough 18 is connect with raw hole solvent feed system
And for storing raw hole solvent, a part for the spherical nozzle 15 is set to 18 upside of raw hole solvent feed trough, and a part is set
In liquid bath 16 to be spun, rotary spherical nozzle 15 connects insulated transmission axis 6, and insulated transmission axis 6 connects nozzle rotation control motor
7, nozzle rotation control motor 7 can drive spherical nozzle 15 to rotate through insulated transmission axis 6, the life in raw hole solvent feed trough 18
15 surface of spherical nozzle is condensed upon after the solvent volatilization of hole, spherical nozzle 15 rotates under the drive that nozzle rotates control motor 7
18 in liquid bath to be spun, 15 surface of spherical nozzle coats a floor height polymers spinning solution 22 again, as shown in Figure 2.
Described is used to form jet stream on 15 surface of spherical nozzle, and jet stream is made to fly to porous receive under high voltage electrostatic field
It includes high-voltage positive electrode bearing interface 8 and high-voltage conducting wires 9, high-voltage positive electrode that rice fiber collecting device, which forms the device of porous nano-fibre,
Bearing interface 8 is sleeved on insulated transmission axis 6, and described 8 one end of high-voltage positive electrode bearing interface is connected with 4 anode of high pressure generator, separately
One end is reliably connected by high-voltage conducting wires 9 and spherical nozzle 15.
The porous nano-fibre collection device is the metal roller 11 that can be rotated of cylinder, by the drive of adjustable speed
Dynamic motor 10 drives.
The material of the spherical nozzle 15 is stainless steel or metallic copper.The nozzle rotation control motor 7 is compiled including PLC
Rotary speed, torque and direction can be arranged in journey module.The spinning solution liquid-supplying system is supplied by the spinning solution peristaltic pump 20 of insulation
To spinning solution, liquid supply speed 0-10mL/min, spinning solution is pumped out from spinning solution reservoir 23 into liquid bath 16 to be spun.Institute
Raw hole solvent feed system is stated by the raw hole solvent 22 of the life hole solvent peristaltic pump 21 of insulation supply to raw hole solvent feed trough 18,
Feed speed is 0-4mL/min.The spinning solution liquid-supplying system and the controllable spinning solution of raw hole solvent feed system and raw hole
Solvent temperature is -5 degrees Celsius -60 degrees Celsius.
4 voltage regulation limits of the high pressure generator are 0-120KV.The insulated transmission axis 6 is polytetrafluoroethylene (PTFE) material,
It is set at 15 axle center of spherical nozzle.The described rotation control motor 7 is the motor of adjustable speed, motor speed 0-20r/min,
It is controlled by PLC programming modules.11 a diameter of 90mm- of metal roller described in the porous nano-fibre collection device ground connection 13.
The rotating speed of 1200mm, driving motor 10 are 0-150r/min.
Use polyacrylonitrile (PAN) (molecular weight is (86000)) N-N dimethylformamides (DMF) prepared high polymer
Solution and chloroform solvent prepare porous nano-fibre.The mass fraction for configuring PAN/DMF high polymer spinning solutions is 12%.Institute
The life hole solvent 22 stated is chloroform.
It is using the method that above-mentioned porous nano-fibre mass preparation facilities carries out porous nano-fibre batch production：
Metal roller 11 is grounded 13, the distance for adjusting metal roller 11 and spherical nozzle 15 is 18cm；Open the drive of metal roller 11
Dynamic motor 10, and it is 60r/min that drum rotation speed, which is arranged,；The switch for opening raw hole solvent feed system adjusts raw hole solvent temperature
For room temperature, pass through the raw hole solvent 2 of the supply of life hole solvent peristaltic pump 21 of insulation to raw hole solvent feed trough 18；Spinning solution is opened to supply
Liquid system switching, adjusting spinning solution temperature are room temperature, and spinning solution is supplied to liquid bath to be spun by the spinning solution peristaltic pump 20 of insulation
16；The driving motor 7 of spherical nozzle 15 is opened, and it is 2.5r/min clockwise, the life of certain temperature that spinning rotation program, which is arranged,
Hole solvent 18 condenses upon 15 surface of spherical nozzle after volatilizing, rotation control motor 7 drives spherical nozzle 15 to revolve through insulated transmission axis 6
Turn, then coats a floor height polymers spinning solution 22；It opens high pressure generator 4 to switch, is slowly increased voltage to 60KV；As shown in figure 3,
A large amount of jet streams 14 generate at the liquid film of spherical nozzle 15；Jet stream 14 flies to metal roller 11 under high voltage electrostatic field, molten
Agent is volatilized, and jet stream, which stretches to cure to be deposited on metal roller 11, forms a large amount of porous nano-fibres 12, as shown in Figure 4.
Embodiment 2
It is molten using polyacrylonitrile (PAN) and the prepared high polymeric solution of N-N dimethylformamides (DMF) and chloroform
Agent prepares porous nano-fibre.The mass fraction for configuring PAN/DMF high polymer spinning solutions is 15%.The life hole solvent 22 is
Chloroform.
The side of porous nano-fibre batch production is carried out using the porous nano-fibre mass preparation facilities in embodiment 1
Method is：Metal roller 11 is grounded 13, the distance for adjusting metal roller 11 and spherical nozzle 15 is 20cm；Open metal roller 11
Driving motor 10, and be arranged drum rotation speed be 90r/min；The switch for opening raw hole solvent feed system adjusts raw hole solvent
Temperature is room temperature, passes through the raw hole solvent 2 of the supply of life hole solvent peristaltic pump 21 of insulation to raw hole solvent feed trough 18；Open spinning
Liquid liquid-supplying system switchs, and adjustings spinning solution temperature is room temperature, by the spinning solution peristaltic pump 20 of insulation supply spinning solution to waiting spinning
Liquid bath 16；The driving motor 7 of spherical nozzle 15 is opened, and it is 4r/min clockwise that spinning rotation program, which is arranged, certain temperature
Raw hole solvent 18 condenses upon 15 surface of spherical nozzle after volatilizing, rotation control motor 7 drives spherical nozzle 15 through insulated transmission axis 6
Rotation, then coat a floor height polymers spinning solution 22；It opens high pressure generator 4 to switch, is slowly increased voltage to 80KV；A large amount of jet streams
14 generate at the liquid film of spherical nozzle 15；Jet stream 14 flies to metal roller 11 under high voltage electrostatic field, and solvent volatilization is penetrated
Stream, which stretches to cure to be deposited on metal roller 11, forms a large amount of porous nano-fibres 12.
Embodiment 3
Polystyrene (PS) is used to be prepared with the prepared high polymeric solution of tetrahydrofuran (THF) and cyclohexane solvent below
Porous nano-fibre.The mass fraction for configuring PS/THF high polymer spinning solutions is 28%, and the life hole solvent 22 is hexamethylene.
The side of porous nano-fibre batch production is carried out using the porous nano-fibre mass preparation facilities in embodiment 1
Method is：Metal roller 11 is grounded 13, the distance for adjusting metal roller 11 and spherical nozzle 15 is 18cm；Open metal roller 11
Driving motor 10, and be arranged drum rotation speed be 60r/min；The switch for opening raw hole solvent feed system adjusts raw hole solvent
Temperature is room temperature, passes through the raw hole solvent 2 of the supply of life hole solvent peristaltic pump 21 of insulation to raw hole solvent feed trough 18；Open spinning
Liquid liquid-supplying system switchs, and adjustings spinning solution temperature is room temperature, by the spinning solution peristaltic pump 20 of insulation supply spinning solution to waiting spinning
Liquid bath 16；The driving motor 7 of spherical nozzle 15 is opened, and it is 2.5r/min clockwise, certain temperature that spinning rotation program, which is arranged,
Life hole solvent 18 volatilize after condense upon 15 surface of spherical nozzle, rotation control motor 7 drives spherical nozzle through insulated transmission axis 6
15 rotations, then coat a floor height polymers spinning solution 22；It opens high pressure generator 4 to switch, is slowly increased voltage to 70KV；Largely penetrate
Stream 14 generates at the liquid film of spherical nozzle 15；Jet stream 14 flies to metal roller 11 under high voltage electrostatic field, and solvent volatilizees,
Jet stream, which stretches to cure to be deposited on metal roller 11, forms a large amount of porous nano-fibres 12.
Claims (10)
1. a kind of porous nano-fibre mass preparation facilities, which is characterized in that including：Porous nano-fibre device for spinning, point
The spinning solution liquid-supplying system of spinning solution and raw hole solvent Yong Yu not be supplied to porous nano-fibre device for spinning and raw hole solvent supplies
To system, and the porous nano-fibre collection device for collecting porous nano-fibre；Wherein, the porous nano-fibre
Device for spinning includes the spherical nozzle that can be rotated, for condensing upon spherical nozzle surface after making raw hole solvent volatilization and described
Spherical nozzle surface coat again a floor height polymers spinning solution device and for spherical nozzle surface formed jet stream, make
Jet stream flies to the device that porous nano-fibre collection device forms porous nano-fibre under high voltage electrostatic field.
2. porous nano-fibre mass preparation facilities as described in claim 1, which is characterized in that the spinning solution feed flow
System includes spinning solution reservoir, spinning solution peristaltic pump, spinning solution catheter, spinning solution peristaltic pump connect spinning solution reservoir and
Spinning solution catheter, spinning solution catheter connect porous nano-fibre device for spinning.
3. porous nano-fibre mass preparation facilities as described in claim 1, which is characterized in that the life hole solvent supplies
Include raw hole solvent stock slot, raw hole solvent peristaltic pump and raw hole solvent catheter, raw hole solvent peristaltic pump connection life to system
Hole solvent stock slot and raw hole solvent catheter, raw hole solvent catheter connect porous nano-fibre device for spinning.
4. porous nano-fibre mass preparation facilities as described in claim 1, which is characterized in that described is used to make raw hole
Spherical nozzle surface is condensed upon after solvent volatilization and coats the dress of a floor height polymers spinning solution again in the spherical nozzle surface
It sets to rotate including teflon insulation seat, nozzle and controls motor and insulated transmission axis, on the teflon insulation seat
Equipped with liquid bath to be spun and raw hole solvent feed trough, liquid bath to be spun connect with spinning solution liquid-supplying system and is used to store spinning solution, raw
Hole solvent feed trough connect and is used to store raw hole solvent with raw hole solvent feed system, and a part for the spherical nozzle is set
On the upside of raw hole solvent feed trough, a part is set in liquid bath to be spun, and rotary spherical nozzle connects insulated transmission axis, insulated transmission
Axis connection nozzle rotation control motor, nozzle rotation control motor can drive spherical sprinkler rotation, raw hole through insulated transmission axis
Spherical nozzle surface is condensed upon after life hole solvent volatilization in solvent feed trough, spherical nozzle rotates the band of control motor in nozzle
It is rotated in liquid bath to be spun under dynamic, the spherical nozzle surface coats a floor height polymers spinning solution again.
5. porous nano-fibre mass preparation facilities as claimed in claim 4, which is characterized in that described is used in spherical shape
Nozzle surface forms jet stream, so that jet stream is flown to porous nano-fibre collection device under high voltage electrostatic field and forms porous nano
The device of fiber includes high-voltage positive electrode bearing interface and high-voltage conducting wires, and high-voltage positive electrode bearing interface is sleeved on insulated transmission axis, institute
It states high-voltage positive electrode bearing interface one end with high pressure generator anode to be connected, the other end is reliably connected by high-voltage conducting wires and spherical nozzle
It connects.
6. porous nano-fibre mass preparation facilities as claimed in claim 5, which is characterized in that the porous nano is fine
The metal roller that can be rotated that collection device is cylindrical is tieed up, is driven by the driving motor of adjustable speed.
7. porous nano-fibre mass preparation facilities as claimed in claim 5, which is characterized in that the spherical nozzle
Material is stainless steel or metallic copper；The spinning solution liquid-supplying system supplies spinning solution, feed flow by the spinning solution peristaltic pump of insulation
Speed is 0-10mL/min, and spinning solution is pumped out from spinning solution reservoir into liquid bath to be spun；The raw hole solvent supply system
System supplies raw hole solvent to raw hole solvent feed trough, feed speed 0-4mL/min by the life hole solvent peristaltic pump to insulate；Institute
It states spinning solution liquid-supplying system and the controllable spinning solution of raw hole solvent feed system and raw hole solvent temperature is -5 degree Celsius -60 and takes the photograph
Family name's degree.
8. porous nano-fibre mass preparation facilities as claimed in claim 5, which is characterized in that the high pressure generator electricity
Pressure adjustable range is 0-120KV；The described rotation control motor is the motor of adjustable speed, motor speed 0-20r/min, by
PLC programming modules control；The rotating speed of a diameter of 90mm-1200mm of the metal roller, driving motor are 0-150r/min.
9. porous nano-fibre mass preparation facilities as described in claim 1, which is characterized in that the porous nano-fibre
Collection device is grounded or is connected with high pressure generator cathode.
10. carrying out porous nano-fibre batch production using the porous nano-fibre mass preparation facilities described in claim 5
Method, which is characterized in that include the following steps：
Step 1：Metal roller is grounded, the distance of adjustment metal roller and spherical nozzle；
Step 2：The driving motor of metal roller is opened, and drum rotation speed is set；
Step 3：The switch for opening raw hole solvent feed system adjusts raw hole solvent temperature, is wriggled by the life hole solvent of insulation
Pump supplies raw hole solvent to raw hole solvent feed trough；
Step 4：Spinning solution liquid-supplying system switch is opened, spinning solution temperature is adjusted, is supplied and is spun by the spinning solution peristaltic pump of insulation
Silk liquid is to liquid bath to be spun；
Step 5：The driving motor of spherical nozzle is opened, and spinning rotation program is set, after the life hole solvent volatilization of certain temperature
Spherical nozzle surface is condensed upon, rotation control motor drives spherical nozzle rotation through insulated transmission axis, then coats a floor height polymers
Spinning solution；
Step 6：High pressure generator switch is opened, increases voltage to required spinning voltage；Liquid film of a large amount of jet streams in spherical nozzle
Place generates, and jet stream flies to metal roller, solvent volatilization under high voltage electrostatic field, and jet stream stretches solidification and is deposited on metal roller
It is upper to form a large amount of porous nano-fibres.
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Cited By (2)
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| CN110409057A (en) * | 2019-08-05 | 2019-11-05 | 武汉纺织大学 | Superfine fibre nonwoven cloth and preparation method thereof |
| WO2022110684A1 (en) * | 2020-11-24 | 2022-06-02 | 苏州大学 | Controllable rotary electrostatic spinning device |
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| CN102268745A (en) * | 2011-06-17 | 2011-12-07 | 北京化工大学常州先进材料研究院 | Method for preparing porous polyacrylonitrile (PAN) nano fibres by electrospinning method |
| CN104099675A (en) * | 2014-07-25 | 2014-10-15 | 北京化工大学 | Electrostatic spinning device available for 3D (three-dimensional) printing |
| CN106811811A (en) * | 2017-01-20 | 2017-06-09 | 东华大学 | A kind of brush mass electrostatic spinning apparatus of ball shape rotary and its application method |
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| US20060290031A1 (en) * | 2003-09-08 | 2006-12-28 | Oldrich Jirsak | Method of nanofibres production from a polymer solution using electrostatic spinning and a device for carrying out the method |
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| CN110409057A (en) * | 2019-08-05 | 2019-11-05 | 武汉纺织大学 | Superfine fibre nonwoven cloth and preparation method thereof |
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