CN109082714A - Electrostatic spinning system and electrospinning process - Google Patents
Electrostatic spinning system and electrospinning process Download PDFInfo
- Publication number
- CN109082714A CN109082714A CN201710447023.0A CN201710447023A CN109082714A CN 109082714 A CN109082714 A CN 109082714A CN 201710447023 A CN201710447023 A CN 201710447023A CN 109082714 A CN109082714 A CN 109082714A
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- Prior art keywords
- electrostatic spinning
- friction generator
- output
- spinning system
- capacitor
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Classifications
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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
-
- 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
Abstract
The present invention relates to electrostatic spinning field, a kind of electrostatic spinning system and electrospinning process are disclosed, which includes: friction generator, for providing power output；And electrostatic spinning apparatus, for carrying out electrostatic spinning by power output provided by the friction generator.The present invention realizes friction generator instead of conventional high-tension power supply for driving electrostatic spinning system, meets the small requirement of voltage high current, while not needing complicated conversion circuit element.
Description
Technical field
The present invention relates to field of material preparation, more particularly to electrostatic spinning system and electrospinning process.
Background technique
Electrostatic spinning technique is a kind of special fiber preparation process, the breakdown using high-voltage electrostatic field to Polymer Solution
Effect, the basic principle is that applying high-voltage electrostatic field between injection apparatus and reception device, makes to prepare micro nanometer fiber material
The cone end of spinning solution forms jet stream, and is stretched in the electric field, finally forms the nanometer of nonwoven state on the reception device
Fiber.Need to be provided electrostatic field with high voltage power supply during electrostatic spinning, required supply voltage high current is small, still, for up to
To this purpose, high voltage power supply used in existing electrostatic spinning needs complicated conversion circuit element.
Summary of the invention
The purpose of the invention is to overcome existing electrostatic spinning power-converting circuit element it is complicated, it is inconvenient to carry,
In place of the deficiencies of electric system must be relied on, provide a kind of with the system of friction generator driving electrostatic spinning and electrostatic spinning side
Method.
To achieve the goals above, one aspect of the present invention provides a kind of electrostatic spinning system, the electrostatic spinning system packet
It includes: friction generator, for providing power output；And electrostatic spinning apparatus, for being provided by the friction generator
Power output carry out electrostatic spinning.
Preferably, the friction generator includes slidingtype friction generator, contact separation formula friction generator, single electrode
Formula friction generator, free-standing friction generator or friction generator group pattern.
Preferably, the friction generator is that disc type inserts finger electrode structure, including frictional layer copper, frictional layer perfluoroethylene
Polypropylene film and electrode layer copper.
Preferably, the electrostatic spinning system is portable electrostatic spinning system.
Preferably, the electrostatic spinning system further include: energy management circuit, for being provided the friction generator
Power output boost, to export the high pressure for making the electrostatic spinning apparatus carry out electrostatic spinning.
Preferably, the energy management circuit include it is following one or more: voltage doubling rectifing circuit, self coupling booster circuit,
And triode booster circuit.
Preferably, when the energy management circuit includes voltage doubling rectifing circuit, the voltage doubling rectifing circuit include one or
Multiple repetitive units, each described repetitive unit include first capacitor, the second capacitor, first diode and the second diode,
Wherein, the negative terminal of the first capacitor is connected with one end of the output of the friction generator, the anode of the first capacitor and
The connection of the positive electrode of the negative electrode of the first diode and the second diode, the negative terminal of second capacitor and the friction
The other end of the output of generator and the connection of the positive electrode of the first diode, the anode of second capacitor and described the
The negative electrodes of two diodes connects, the positive electrode and negative electrode of second diode as the repetitive unit output with
The input of another repetitive unit connects.
Preferably, the first capacitor and/or the capacitance parameter range of second capacitor are 1x104-1x105PF, it is described
The number of repetitive unit is 10-16.
Preferably, the high pressure range after the energy management circuit is boosted is 1500-8000 volt.
Preferably, the electrostatic spinning apparatus includes propulsion device, injection needle point and reception device, wherein the injection
Needle point is connected with one end of the output of the friction generator, the output of the reception device and the friction generator it is another
End connection.
Preferably, the electrostatic spinning apparatus includes propulsion device, injection needle point and reception device, wherein the injection
Needle point is connected with one end of the output of the energy management circuit, the output of the reception device and the energy management circuit
Other end connection.
Another aspect of the present invention provides a kind of electrospinning process, which comprises by friction generator, provides electricity
It can output；And electrostatic spinning is carried out by power output provided by the friction generator.
Preferably, the electrospinning process further include: before carrying out the electrostatic spinning, to the friction generator institute
The power output of offer is boosted, to export the high pressure for carrying out the electrostatic spinning.
Preferably, the high pressure range after carrying out the boosting is 1500-8000 volt.
Through the above technical solutions, the output of friction generator has the characteristics that voltage high current is small, with electrostatic spinning institute
The high voltage power supply characteristic needed is consistent, and makes it possible high voltage power supply of the friction generator as electrostatic spinning.And booster circuit energy
Enough further boostings for realizing friction generator output signal, obtain the high pressure that can drive electrostatic spinning system, prepare
Polymer nanofiber.The present invention can replace traditional high voltage power supply, will be mechanical using triboelectrification effect and electrostatic induction
Electric energy can be converted to and be used for electrostatic spinning, widened the application range of friction generator.
Correspondingly, the invention has the following advantages that 1) realizing friction generator instead of conventional high-tension power supply for driving
Electrostatic spinning system；The small requirement of voltage high current is met, complicated conversion circuit element is not needed.2) energy management is utilized
Circuit further increases the output voltage of friction generator.3) nanofibers are prepared using mechanical energy driving；Can carry out
Miniaturization Design, electrostatic spinning when realizing portable can use under unregulated power system situation.4) process repeatability is strong, performance
The features such as excellent, friction generator lower cost for material.
The other feature and advantage of the embodiment of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is to further understand for providing to the embodiment of the present invention, and constitute part of specification, under
The specific embodiment in face is used to explain the present invention embodiment together, but does not constitute the limitation to the embodiment of the present invention.Attached
In figure:
Fig. 1 is the schematic diagram for being applied to electrostatic spinning according to the friction nanometer power generator in one embodiment of the invention；
Fig. 2 is the structural schematic diagram according to the friction nanometer power generator in one embodiment of the invention；
Fig. 3 is the working principle of friction nanometer power generator described in Fig. 2 and the open-circuit voltage and short circuit current of its output；
Fig. 4 is the circuit diagram according to the energy management circuit in one embodiment of the invention；
Fig. 5 is that the output according to the friction nanometer power generator in one embodiment of the invention under energy management circuit is special
Property；
Fig. 6 is according to the friction nanometer power generator in one embodiment of the invention as electrostatic spinning power supply, and spinning obtains
Polyethylene terephthalate (PET) fiber morphology figure；
Fig. 7 is according to the friction nanometer power generator in one embodiment of the invention as electrostatic spinning power supply, and spinning obtains
Nylon-6 (PA 6) fiber morphology figure；And
Fig. 8 is according to the friction nanometer power generator in one embodiment of the invention as electrostatic spinning power supply, and spinning obtains
Polyacrylonitrile (PAN) fiber morphology figure.
Description of symbols
11 friction nanometer power generator, 12 energy management circuit
13 electrostatic spinning apparatus 21 friction electrode layer
22 frictional layer, 23 stator electrode layer
23a copper electrode A 23b copper electrode B
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The present invention provides a kind of friction nanometer power generator (TENG) and its energy management circuit, utilizes energy management circuit pair
The electric energy of friction nanometer power generator output is managed, and the electric energy after management is used to drive electrostatic spinning system, is realized
The spinning of polymer solution, instead of traditional high voltage power supply.The output of friction nanometer power generator has voltage high current small
The characteristics of, and the power supply for being used for electrostatic spinning is high voltage low current DC power supply.It, can be by the nanometer that rubs using booster circuit
The electric signal of generator output further boosts, and obtains the high pressure that can drive electrostatic spinning system, prepares polymer nanocomposite
Fiber.The present invention utilizes triboelectrification effect and electrostatic induction, converts electric energy for mechanical energy, realizes the quiet of self energizing mode
Electrospun gets rid of dependence of the conventional electrostatic spinning to high voltage power supply, has that preparation method is simple, process repeatability is strong, performance
The features such as excellent, lower cost for material, has important application value in energy field.
Fig. 1 is the schematic diagram for being applied to electrostatic spinning according to the friction nanometer power generator in one embodiment of the invention.Such as
Shown in Fig. 1, the present invention is made of friction nanometer power generator 11, energy management circuit 12, electrostatic spinning apparatus 13.Wherein, it rubs
Nano generator 11 includes all types of friction nanometer power generators or friction nanometer power generator group for being capable of providing power output
Array, including but not limited to slidingtype friction nanometer power generator, contact separation formula friction nanometer power generator, single electrode formula friction are received
Rice generator, free-standing friction nanometer power generator etc.；Friction material used includes but is not limited to polyimides, poly terephthalic acid
Glycol ester, perfluoroethylene-propylene, polytetrafluoroethylene (PTFE), polyacrylonitrile etc.；Electrode used therein material includes but is not limited to metal, conduction
Polymer, doping conductive film etc..The input terminal of energy management circuit 12 is connected with the output end of friction nanometer power generator, makees
With being boosted to the output of generator, output one is able to carry out the high pressure of electrostatic spinning.To realize this target, energy
Management circuit needs to have the function of improving generator output voltage, is including but not limited to made of elements such as diode and capacitors
Voltage doubling rectifing circuit circuit, be made of elements such as coil and iron cores self coupling booster circuit, by elements such as triode and inductance
Triode booster circuit of composition etc..Voltage after present invention boosting can be direct current or exchange.Electrostatic spinning apparatus 13 is by promoting
Device, injection needle point, reception device composition, wherein conductive pinpoint is connected with the positive output end of energy management circuit, reception device
It is connected with the negative output terminal of energy management circuit, including but not limited to plate wire drawing device, roller wire drawing device, caged wire drawing device, super
Orient wire drawing device, thin axis wire drawing device, disk like wire drawing device etc.；Spinning polymer includes but is not limited to polyethylene terephthalate
The polymer such as ester, nylon-6, polyacrylonitrile, polyvinylidene fluoride, thermoplastic polyurethane, polyvinyl alcohol, polyether sulfone.It is final to realize
Spinning state include all spinning states such as continuous spinning and interrupted spinneret.
Fig. 2 is a kind of typical structure schematic diagram according to the friction nanometer power generator in one embodiment of the invention, the hair
Motor is that disc type inserts finger electrode structure.Fig. 2 a is the friction rotor layer of generator, is made of the fan-shaped copper bar to distribute alternately, i.e.,
Rub electrode layer 21.Fig. 2 b is the stator electrode of generator, is made of complementary slotting finger sector copper bar, i.e. stator electrode layer 23,
Wherein, two complementation electrodes constitute adjacent copper electrode A, copper electrode B.Stator is consistent with the fan-shaped copper bar structure in rotor, area
It is equal.Fig. 2 c is the structural schematic diagram after the generating set installs.The generator is mainly made of three-decker: friction electrode
Layer 21, frictional layer (perfluoroethylene-propylene (FEP) film) 22, stator electrode layer 23.The material of frictional layer 22 can be any exhausted
Edge material, such as perfluoroethylene-propylene (FEP) film.FEP film is entirely attached to electrode copper surface, when work, area load FEP
The stator layers of film are fixed, and rotor rotates relative to stator under the effect of external force, produce electricl energy.Thus constitute
Disc type inserts the friction nanometer power generator for referring to electrode structure, by rotor and stator mutual pivoting friction in friction electrode layer 21
Electric signal is generated between stator electrode layer 23, power supply can be provided for electrostatic spinning apparatus.
Fig. 3 is the working principle of friction nanometer power generator described in Fig. 2 and the open-circuit voltage and short circuit current of its output.
As can be seen that friction electrode layer 21, frictional layer 22, copper electrode A23a, copper electrode B 23b constitute a stand alone type from Fig. 3 a
Rotary generator.Its course of work can be divided into three kinds of states: initial state i, intermediate state ii, final state iii.Friction electrode layer 21 with rub
When wiping layer 22 is in contact, due to triboelectrification effect, xenogenesis charge can be formed in surface both, and copper surface charge density is
Twice of FEP.When being located at original state i, friction electrode layer 21 and copper electrode A 23a is completely coincident, copper electrode A 23a induction
Out negative electrical charge and copper electrode B 23b induces positive charge.When friction electrode layer 21 rotates, when being located at intermediate state ii, electricity
Son flows to copper electrode B 23b from copper electrode A 23a via external circuit, generates electric current.When rubbing, electrode layer 21 continues to rotate, and is located at
When final state when iii, copper electrode A 23a and the copper electrode B 23b charge induced are just opposite with initial state.Likewise, friction electricity
Pole layer 21 continues to rotate, it will opposite electric current is generated on external circuit.So rotation is gone down, it will week is formed in external circuit
The alternating current of phase property.Fig. 3 b, 3c are the open-circuit voltage and short circuit current of TENG output in the present invention, respectively 1200V, 5mA.
Fig. 4 is the circuit diagram according to the energy management circuit in one embodiment of the invention.The energy management circuit be by
The voltage doubling rectifing circuit that diode and capacitor are formed according to certain regular array, the circuit can export higher than the alternating voltage of input
Many times of DC voltage.The output of friction nanometer power generator be alternating current, voltage peak μ, when μ be positive half period when, two
The conducting of pole pipe D1 positively biased, μ are charged by D1 to capacitor C1, in the ideal case, charge to μ, the negative right side in a polarity left side is just；When μ is negative
When the half period, the reverse-biased cut-off of D1, D2 positively biased is connected, and capacitor C2 charges to 2 μ, and the negative right side in a polarity left side is just；When μ is positive half period again
When, the reverse-biased cut-off of D1, D2, D3 positively biased is connected, and capacitor C3 charges to 2 μ, and the negative right side in a polarity left side is just；When μ is again negative half-cycle,
Only D4 conducting, capacitor charging to 2 μ, the negative right side in a polarity left side is just.And so on, if more increases are several in above-mentioned voltage doubling rectifing circuit
A link, by multiple periods, repeatedly to capacitor charging, except the voltage on capacitor C1 is μ, the voltage of other each capacitors is 2
μ, polarity are that the right side is being born just in a left side.Load is connected to the both ends in relation to capacitance group, so that it may obtain corresponding more multiplication of voltage direct current outputs
Voltage.
In addition, as seen from Figure 4, which is made of multiple repetitive units, for example, the first repetitive unit is just
Including capacitor C1, capacitor C2, diode D1 and diode D2, wherein the negative terminal of capacitor C1 and the output of friction nanometer power generator
One end connection, the anode of capacitor C1 connect with the positive electrode of the negative electrode of diode D1 and diode D2, and capacitor C2's bears
End is connected with the positive electrode of the other end of the output of friction nanometer power generator and diode D1, the anode and diode of capacitor C2
The negative electrode of D2 connects, the positive electrode and negative electrode of diode D2 as the first repetitive unit output with the second repetitive unit
Input connection, and so on.Preferably, the capacitance parameter range in the energy management circuit is 1x104-1x105PF is repeated
The number of unit is 10-16, states under parameter in use, can improve boost value also while prevent capacitor charging time is too long from asking
Topic.
Fig. 5 is that the output according to the friction nanometer power generator in one embodiment of the invention under energy management circuit is special
Property.Under 22 times of boosting multiples, voltage doubling rectifing circuit is boosted using the capacitor of different model.It can be seen from the figure that
Under the voltage multiplying rectifier effect of energy management circuit, the output of friction nanometer power generator reaches 8kV, can satisfy electrostatic spinning
It is required that.
Fig. 6 is according to the friction nanometer power generator in one embodiment of the invention as electrostatic spinning power supply, and spinning obtains
Polyethylene terephthalate (PET) fiber morphology figure.The even in fiber diameter distribution as seen from the figure, fiber table
Face is smooth, consistent with the fiber morphology gone out using conventional high-tension power supply electrostatic spinning.Friction nanometer power generator is realized in electrostatic
Application on spinning power supply.
Fig. 7 is according to the friction nanometer power generator in one embodiment of the invention as electrostatic spinning power supply, and spinning obtains
Nylon-6 (PA 6) fiber morphology figure.
Fig. 8 is according to the friction nanometer power generator in one embodiment of the invention as electrostatic spinning power supply, and spinning obtains
Polyacrylonitrile (PAN) fiber morphology figure.
Provided electrospinning process according to an embodiment of the present invention, which comprises by friction generator,
Power output is provided；It boosts to power output provided by the friction generator, to export high pressure；And by described
High pressure carries out electrostatic spinning.
In conclusion providing a kind of new Static Spinning the present invention is based on friction nanometer power generator and energy management circuit
Silk power supply.The present invention gets rid of dependence of the electrostatic spinning to high voltage power supply, directly can convert electric energy for mechanical energy and carry out spinning,
The application environment of electrostatic spinning has been widened, the application field of friction nanometer power generator is also extended, has been had in energy field important
Application value.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited thereto.At this
, can be with various simple variants of the technical solution of the present invention are made in the range of the technology design of invention, including each particular technique
Feature is combined in any suitable manner.In order to avoid unnecessary repetition, the present invention is to various combinations of possible ways
No further explanation will be given.But it should also be regarded as the disclosure of the present invention for these simple variants and combination, belongs to the present invention
Protection scope.
Claims (14)
1. a kind of electrostatic spinning system, which is characterized in that the electrostatic spinning system includes:
Friction generator, for providing power output；And
Electrostatic spinning apparatus, for carrying out electrostatic spinning by power output provided by the friction generator.
2. electrostatic spinning system according to claim 1, which is characterized in that the friction generator includes slidingtype friction
Generator, contact separation formula friction generator, single electrode formula friction generator, free-standing friction generator or triboelectricity unit
Array.
3. electrostatic spinning system according to claim 1, which is characterized in that the friction generator is that disc type inserts finger electricity
Pole structure.
4. electrostatic spinning system according to claim 1, which is characterized in that the electrostatic spinning system is portable electrostatic
Spinning system.
5. electrostatic spinning system according to claim 1-4, which is characterized in that the electrostatic spinning system also wraps
It includes:
Energy management circuit is made described quiet for boosting to power output provided by the friction generator with output
The high pressure of electric spinning device progress electrostatic spinning.
6. electrostatic spinning system according to claim 5, which is characterized in that the energy management circuit includes following one
Or more persons: voltage doubling rectifing circuit, self coupling booster circuit and triode booster circuit.
7. electrostatic spinning system according to claim 6, which is characterized in that when the energy management circuit includes times repoussage
Current circuit, the voltage doubling rectifing circuit include one or more repetitive units, each described repetitive unit include first capacitor,
Second capacitor, first diode and the second diode, wherein the output of the negative terminal of the first capacitor and the friction generator
One end connection, the positive electrode of the negative electrode and the second diode of the anode of the first capacitor and the first diode connects
It connects, the other end of the output of the negative terminal and friction generator of second capacitor and the positive electrode of the first diode
Connection, the anode of second capacitor connect with the negative electrode of second diode, the positive electrode of second diode with
Negative electrode is as the output of the repetitive unit to connect with the input of another repetitive unit.
8. electrostatic spinning system according to claim 7, which is characterized in that the first capacitor and/or second electricity
The capacitance parameter range of appearance is 1x104-1x105PF, the number of the repetitive unit are 10-16.
9. electrostatic spinning system according to claim 5, which is characterized in that after the energy management circuit is boosted
High pressure range is 1500-8000 volt.
10. electrostatic spinning system according to claim 1, which is characterized in that the electrostatic spinning apparatus includes promoting dress
It sets, inject needle point and reception device, wherein the injection needle point is connected with one end of the output of the friction generator, described
Reception device is connected with the other end of the output of the friction generator.
11. electrostatic spinning system according to claim 5, which is characterized in that the electrostatic spinning apparatus includes promoting dress
It sets, inject needle point and reception device, wherein the injection needle point is connected with one end of the output of the energy management circuit, institute
Reception device is stated to connect with the other end of the output of the energy management circuit.
12. a kind of electrospinning process, which is characterized in that the described method includes:
By friction generator, power output is provided；And
Electrostatic spinning is carried out by power output provided by the friction generator.
13. electrospinning process according to claim 12, which is characterized in that the electrospinning process further include:
It before carrying out the electrostatic spinning, boosts to power output provided by the friction generator, is carried out with exporting
The high pressure of the electrostatic spinning.
14. electrospinning process according to claim 13, which is characterized in that the high pressure range after carrying out the boosting is
1500-8000 volt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710447023.0A CN109082714A (en) | 2017-06-14 | 2017-06-14 | Electrostatic spinning system and electrospinning process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710447023.0A CN109082714A (en) | 2017-06-14 | 2017-06-14 | Electrostatic spinning system and electrospinning process |
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| CN109082714A true CN109082714A (en) | 2018-12-25 |
Family
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| CN201710447023.0A Pending CN109082714A (en) | 2017-06-14 | 2017-06-14 | Electrostatic spinning system and electrospinning process |
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Cited By (1)
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| CN112398363A (en) * | 2019-08-16 | 2021-02-23 | 北京纳米能源与系统研究所 | Display device and display method |
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Address after: No.8, yangyandong 1st Road, Yanqi Economic Development Zone, Huairou District, Beijing Applicant after: Beijing Institute of Nanoenergy and Nanosystems Address before: 100083, C building, Tiangong building, No. 30, Haidian District, Beijing, Xueyuan Road Applicant before: Beijing Institute of Nanoenergy and Nanosystems |
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Application publication date: 20181225 |
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