CN107620127A - A kind of needle-less electrostatic spinning component based on fractal structure - Google Patents
A kind of needle-less electrostatic spinning component based on fractal structure Download PDFInfo
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Abstract
The invention discloses a kind of needle-less electrostatic spinning component based on fractal structure, there is provided one kind can effectively improve the electrostatic spinning technique of nanofiber fineness, the product uniformity and yield.Its drip irrigation device is to form electrostatic spinning head using fractal structure unit, different types of electrostatic spinning head is obtained by various forms of fractal structures；By adjusting the specification of fractal structure spinneret, quantity and the working width and length of spinneret, the nanofiber continuous production of different scales can be achieved.It is characteristic of the invention that, the fractal structure spinneret of particular design can improve field strength and distributing homogeneity, improve nanofiber fineness, the uniformity and yield, avoid that field strength present in existing needle-less electrostatic spinning equipment is small, energy consumption is big and the irregular phenomenon of field strength, spinning voltage can effectively be reduced, reduce cost, energy utilization rate is improved, is used beneficial to industrialization promotion.
Description
Technical field
The present invention relates to electrostatic spinning technique, specially a kind of needle-less electrostatic spinning component based on fractal structure.
Background technology
A branch of the electrostatic spinning nano fiber production technology as nanometer technology, development is swift and violent in recent years.The technology utilizes outer
The electrostatic field force that making alive is formed stretches to spinning solution droplet, and with the volatilization of solvent, polymer is formed by curing nanometer
Fiber.Electrospinning process is generally divided into needle-based and the major class of needleless hair style two.Multi needle class Static Spinning be a kind of capillary or
The general name of slit extruded type electrostatic spinning technique, including Multi needle, multiinjector and more spinneret orifice electrostatic spinning techniques, once by
It is considered to realize the effective ways of nano-fiber material prepare with scale, but is produced during such electrostatic spinning between jet
Horizontal coulomb repulsion, result in the appearance of " edge effect " (End effect) phenomenon, influence the equal of spinning efficiency and product
Even property, additionally, there may be the problems such as syringe needle is easily blocked up, is not easily cleaned.As another effective scale electrospinning process,
There is fast development in needle-less electrostatic spinning technique, the gesture of big substituted needle-based electrostatic spinning technique.
WO2005/024101 A1 in 2003 describe a kind of needle-less electrostatic spinning technique, and it uses smooth surface or surface band
The transfer roller of the different surface morphologies such as screw thread, decorative pattern as electrostatic spinning head, the spinning solution of roll surface enter after electric field by
Free Surface recombinates, and forms many spinning jets.The technology eliminates syringe needle compared with conventional multi-needle electrostatic spinning technique
The drawbacks of electric field interferes between blocking, syringe needle, but spinning distance should not adjust, need higher voltage, gained is received
Discrete larger and open in the spinning process spinning solution storage mode of rice fibre fineness causes solvent quickly to volatilize, spinning
Front and rear spinning solution concentration is inconsistent.2012, there is the needle-less electrostatic spinning skill based on US20090127747A1
Art, the technology are used as spinning electrode using very thin wire, and the method for applying spinning solution be changed to it is closed back and forth
Semar technique, it can effectively prevent the volatilization of spinning solution, maintain spinning solution concentration uniformity.But due to being cut using circular
Face wire makees spinning electrode, belongs to without sophisticated Static Spinning, and electric-field intensity is weaker, and energy consumption still will not be remarkably decreased；Spinning
Jet is weaker, and is easy to waft to all directions, and it is undesirable to will also result in spinning effect.Particularly, it is this by spinning electricity
Pole surface free fluid recombinates the spinning jet to be formed, and can be reassembled into varying number immediately according to the transient change of field strength
It is random bigger with the spinning jet (jet of the big formation of field strength is just more, and the jet of the small formation of field strength is just few) of specification, because
This easily cause nanofiber receive base fabric on deposit it is irregular.
In order to solve the above-mentioned technical problem, inventor has been carried out limited to the regularity of distribution of field strength during scale electrostatic spinning
Member simulation and analysis, even finding needle-less electrostatic spinning technique, there is also End caused by horizontal repulsion between more jets
Effect phenomenons, only Free Surface liquid can actively avoid the maximum jet distribution mode of coulomb repulsion from group, but not
The presence of this phenomenon can be eliminated completely.In addition, inventor also found, the needle-less electrostatic of WO2005/024101 A1 descriptions
The spinning electrode field strength of device for spinning is most weak, it is therefore desirable to very high spinning voltage；Needle-less based on US20090127747A1
The spinning electrode field strength of electrostatic spinning apparatus it is a little higher than the former, it is but still very weak, and it is higher field strength distribution irregularity to be present
Phenomenon.
The content of the invention
In view of the shortcomings of the prior art, the technical problem that the present invention intends to solve is to provide a kind of needle-less based on fractal structure
Electrostatic spinning component, the filament spinning component utilize the electrostatic spinning head of special construction, and spinning part field strength, drop can be greatly enhanced
Low edge effect, energy utilization rate is improved, improve nanofiber yield and the product uniformity, and avoid traditional needle-based quiet
The problems such as syringe needle present in electro-spinning process blocks, inconvenience cleaning；Gained nanofiber fineness is thinner, and fineness variation compared with
It is low, can high speed, large-scale production thinner nanofiber evenly.
The invention discloses a kind of needle-less electrostatic spinning component based on fractal structure, the spinning header structure of the filament spinning component can
Equidistantly coiled along axis with rounded or helical form, prepared available for scale nano-fiber material.
The described needle-less electrostatic spinning component based on fractal structure, by spinning manifold, spinneret, reservoir, axis,
Receiving electrode and inlet and liquid outlet are formed.The spinning header structure can be in that plane or helical form are equidistantly arranged along axis.
Spinning manifold is made up of two parts, and top half has semicircle shell, and the latter half has rectangular body case, two parts group
Be fitted together form spinning manifold when, the inside containing one along spinneret length direction be in hollow cylindrical horizontal reservoir,
For depositing spinning solution, and the liquid level of spinning solution is less than the position of central shaft；The height of spinning liquid level is by liquid outlet height
To control, inlet is located at its lowest position of the relative side of liquid outlet.Described spinneret, axis and reservoir has
Identical center line, the center line are also the center of circle of spinning manifold top half round sides.Directly over described spinning manifold
The spinning window that length is less than spinneret length, width is less than spinneret diameter is offered along arcuate surface.By spinning window
The semi open model structure of formation can ensure being smoothed out for upward spinning, while control the solvent in spinning solution will not be quick
Volatilization, so as to the uniformity for keeping the uniformity of solution concentration before and after electrostatic spinning, ensureing spinning.
Described spinneret is made up of two level Feng's Koch curve fractal structure unit, namely its length of side and the composition of curve shape are abided by
From following rule：(1) one line segment of trisection；(2) centre of first step division trisection is substituted with an equilateral triangle
Part；(3) on every straight line, second step is repeated.Feng's Koch curve is above step repeatedly to unlimited iteration
LIMIT RESULTS.The figure that first time iteration is formed has 5 nodes, referred to as one-level Feng Koch curve；Second of iteration is formed
Curve there are 17 nodes, referred to as two level Feng Koch curve, the rest may be inferred.
The Feng Kehe fractal structures unit that described spinneret contains can be according to the diametric requirements of spinneret, by 4~10 Ge Feng sections
Conspicuous fractal structure composition, each spinneret is made up of several circular or spiral Feng's kock fractal structure units, and spinning
Head can staggeredly be combined with laid out in parallel.During the rounded Feng's kock fractal structure of spinneret, the shape of spinneret can be broken line
Shape, anchor ring shape or plane；Spinneret twist Feng Kehe fractal structures when, the shape of spinneret can be polyline shaped,
Anchor ring shape is plane.When spinneret is using the Feng Kehe fractal structures of polyline shaped or anchor ring shape, its broken line or anchor ring shape
Feng Kehe fractal structures by the even number spoke through center and middle axis connection；When spinneret is using plane Feng Kehe points
During shape structure, its axis is through plane Feng Kehe fractal structures center and is attached thereto.When spinneret is using spiral helicine
During Feng Kehe fractal structures, its spiral helicine Feng's kock fractal structure converges on the axis through its geometric center respectively at both ends,
Axis both ends drive rotation by two synchronous motors respectively respectively on the spinning manifold two sides, during spinning.
The thickness of the Feng Kehe fractal structures of described composition spinneret is 0.1~10mm, a diameter of 0.1~10mm of broken line.Institute
During the rounded Feng's Koch curve structure of the spinneret stated, the structure can be along the spinning electrode length direction (width of electrospinning device
Cross direction) multiple concatenation arrangements are carried out, each the distance between circular Feng's Koch curve structure is 1~30cm；Described spinning
Head twist Feng's Koch curve structure when, the structure is along spinneret length direction (the breadth direction of electrospinning device)
Pitch is 1~30cm.
Material for making spinneret and central rotating shaft can be conductive metal material or insulating properties nonmetallic materials.Spinneret
With central rotating shaft for conductive metal material when, applied voltage can be connected on metal spinneret by central rotating shaft, can also
Access inside spinning solution；When the material of spinneret and central rotating shaft is insulating properties nonmetallic materials, applied voltage is directly connected into
Inside spinning solution.
Brief description of the drawings
Fig. 1 is a kind of needle-less electrostatic spinning component diagram based on fractal structure of the present invention：(a) it is filament spinning component profile
3D schematic diagrames, (b) are that filament spinning component internal structure and component assemble 3D perspective views, and spinneret therein uses helical curve
Face formula list spinneret.
Fig. 2 is a kind of Feng Kehe broken-line type spinning of first kind of embodiment of needle-less electrostatic spinning based on fractal structure of the invention
Head schematic diagram.
Fig. 3, which is that two of a kind of first kind of embodiment of needle-less electrostatic spinning based on fractal structure of the present invention are parallel, to be staggered
Feng Kehe broken-line type spinneret schematic diagrames.
Fig. 4 is a kind of Feng Kehe anchor ring formula spinning of first kind of embodiment of needle-less electrostatic spinning based on fractal structure of the invention
Head schematic diagram.
Fig. 5 is a kind of two level crossings arrangement of first kind of embodiment of needle-less electrostatic spinning based on fractal structure of the present invention
Feng Kehe anchor ring formula electrostatic spinning electrode schematic diagrames.
Fig. 6 is a kind of Feng Kehe plane formula spinning of first kind of embodiment of needle-less electrostatic spinning based on fractal structure of the invention
Head schematic diagram.
Fig. 7 is a kind of two parallel friendships of the first kind of embodiment of needle-less electrostatic spinning based on Feng's Koch curve structure of the present invention
Pitch the Feng Kehe plane formula spinneret schematic diagrames of arrangement.
Fig. 8 is a kind of Feng Kehe spirals of first kind of embodiment of needle-less electrostatic spinning based on Feng's Koch curve structure of the present invention
Anchor ring formula spinneret schematic diagram.
Fig. 9 is a kind of two parallel friendships of the first kind of embodiment of needle-less electrostatic spinning based on Feng's Koch curve structure of the present invention
Pitch the Feng Kehe spiral anchor ring formula spinneret schematic diagrames of arrangement.
Figure 10 is a kind of (embodiment 1) of first kind of embodiment of needle-less electrostatic spinning based on Feng's Koch curve structure of the invention
Obtained PVDF-HFP nanofiber SEM pictures.
Figure 11 is a kind of (embodiment 2) of first kind of embodiment of needle-less electrostatic spinning based on Feng's Koch curve structure of the invention
Obtained PVDF-HFP nanofiber SEM pictures.
Figure 12 is what a kind of (embodiment 3) of embodiment of fractal structure tip needle-less electrostatic spinning apparatus of the present invention obtained
PVDF-HFP nanofiber SEM pictures.
Embodiment
The present invention is further discussed below with reference to embodiment and its accompanying drawing：
The needle-less electrostatic spinning component (referring to Fig. 1) based on fractal structure that the present invention designs, by spinning manifold 5, spinning
First 20, reservoir 70, axis 40, inlet 50 and liquid outlet 60 are formed.The spinning header structure can be with rounded (ginseng
See Fig. 2~7) or helical form equidistantly arranged along axis 40 (referring to Fig. 1,8~9).The assembly relation of this filament spinning component is such as
Under：Described spinning manifold 5 is made up of two parts：Top half has semicircle shell, and the latter half has half of pros
Body case, when two parts fit together composition spinning manifold, it is hollow circuit cylinder that the inside, which contains one along spinneret length direction,
The horizontal reservoir 70 of body or hollow square body, for depositing spinning solution 80, and its liquid level is less than the position of axis 40；
The height of spinning liquid level is controlled by the height of liquid outlet 60, and inlet 50 is located at and the left surface 10 at the place of liquid outlet 60
Its lowest position of relative right flank 15.Length is offered along arcuate surface be less than spinning directly over described spinning manifold 5
The length of silk first 20, width are less than the spinning window 30 of the diameter of spinneret 20, form semi open model spinning manifold structure,
It can ensure while upward spinning is smoothed out, the solvent evaporation rate in spinning solution be controlled, to keep Static Spinning
The uniformity of solution concentration, the uniformity of guarantee spinning before and after silk.
The described spinneret 20 (abbreviation spinneret) based on fractal structure is core component of the invention, by two level or more
Feng's Koch curve fractal structure unit form, the fractal structure of the spinneret 20 can be with rounded or helical form along axis
40 equidistant arrangements.Material for making spinneret 20 and axis 40 is conductive metal material or insulating properties nonmetallic materials.
When spinneret 20 and axis 40 are conductive metal material, applied voltage can be connected in metal spinneret 20 by axis 40
On, the inside of spinning solution 80 can also be accessed.When the material of spinneret 20 and axis 40 is insulating properties nonmetallic materials, outside
Making alive is directly connected into the inside of spinning solution 80.
Described spinneret 20, the thickness of its fractal structure module are 0.1~10mm, a diameter of 0.1~10mm of broken line, distance
The inner surface distance of reservoir 70 is 0.5~5cm, and the length of spinning window 30 is 10cm~1.8m, the width of spinning window 30
Spend for 5cm~90cm, a diameter of 15cm~1m of spinning manifold 5, the length of spinning manifold 5 is 30cm~2m.It is specific quiet
Each the filament spinning component dimensions and spinneret quantity that Electrospun needs can need to be designed and assemble according to actual product.
During described 20 rounded fractal structure of spinneret, the structure can (electrostatic spinning be set along the length direction of spinneret 20
Standby breadth direction) multiple concatenation arrangements are carried out, each the distance between circular fractal structure is 1~30cm.Spinneret 20
Twist during fractal structure, the pitch of length direction (the breadth direction of electrospinning device) of the structure along spinneret 20
For 1~30cm.
Spinning solution 80 is pumped into reservoir 70 by inlet 50 by the left surface 15 of spinning manifold 5, it is however generally that spins
Liquid storing heights of the silk solution 80 in reservoir 70 less than the bottom of reservoir 70 to axis 40 distance, with the 1/4 of the distance~
3/4 is optimal；When the height of spinning solution 80 is higher than setting value, spinning manifold 5 can be discharged by liquid outlet 60.Spinning
Depth capacity, width and the length of casing 5 determine by technological requirement, i.e., according to the specification, size and number of spinneret 20
It is determined that.
The operation principle and process of filament spinning component of the present invention be (referring to Fig. 1)：By the spinning solution 80 prepared in syringe pump
The reservoir 70 being pumped into the presence of (not shown in accompanying drawing) by inlet 50 in spinning manifold 5, by HVDC
Electricity is incorporated into (not shown in accompanying drawing) in spinning solution 80, and motor (not shown in accompanying drawing) drives axis 40 with appropriate
Speed rotates, and takes spinning solution 80 to spinneret 20 surface from reservoir 70.When electrostatic field is enough caused by applied voltage
When powerful, electrostatic field force overcomes the surface tension and viscosity resistance of spinning solution 80, and the Taylor of projection is produced in spinning head surface
Cone；When further increase voltage, Taylor's poppet surface produces spinning jet, after it have passed through initial straight line stable region, very
Whip is entered soon and moves the unstable stage, and further drawing-off is carried out to jet, causes jet further to cleave into more small liquid
Drop.During being moved to reception device (not shown in accompanying drawing), the solvent in jet constantly volatilizees, and polymer is gradual
Solidification.When reaching reception device, polymer is solidified into fiber of the size in the range of micro/nano level.
The filament spinning component of the present invention uses the electrostatic spinning electrode (spinneret) based on fractal structure, its special fractal structure pole
The big charge density for improving spinning electrode (spinneret), improves field strength, so as to reduce energy consumption, saves production cost,
Gained nanofiber fineness is smaller, and production efficiency is greatly improved.Meanwhile the uniformity of field strength distribution is also improved, can
Effectively improve electrospinning fibre fineness uniformity and electrospinning membrane structure uniformity.
The not described part of the present invention is applied to prior art.
The specific embodiment of the present invention is given below.Specific embodiment is only applicable to further illustrate the present invention, does not form to this
The limitation of patent application patent requirements.
Following examples experiment uses electrostatic spinning apparatus of the present invention (referring to Fig. 1), the long 40cm of spinneret, includes 5 altogether
A diameter of 26cm the distance between fractal structure unit, adjacent electrospinning unit is 10cm.Spinning manifold length 60cm, high 30cm,
Wide 30cm；Inner cylinder liquid storage flute length 50cm, internal diameter 28cm.Spinning window long 46cm, width 18cm.Middle axial length 70cm,
Diameter 3cm.There is 1cm space at its spinneret maximum gauge apart from reservoir inner cylinder surface, spinning liquid level and go out
Liquid open height is controlled in distance center line 6cm.Spinneret in different embodiments divides shape using different size, shape, material
Construction unit, each electrospinning unit contain 5 fractal structures, and each spinneret is made up of 5 spun structure units, spinneret
Rotating speed is 5~50Rev/min.
Following examples experiment uses Kynoar-hexafluoropropene (PVdF-HFP) polymer formulation mass fraction as 13%
Spinning solution, its molecular weight 300000,135 DEG C of fusing point；The compound method of spinning solution：By by PVdF-HFP powder
End, it is added in the mixed system of 70DMF/30 acetone, stirs 3~4 hours at normal temperatures, until solid powder is whole
Dissolving, and clear viscous shape is presented.Receiving electrode is aluminum metal flat board, length 50cm, width 10cm.Fiber receives
In commercial release liners.
Embodiment 1
The spinneret formed using the Feng Kehe fractal structures of 5 polyline shapeds is carried out the more jet flow static electricities of needleless hair style and spun, and each divides shape
Structure electrospinning unit is by 5 spokes through center and middle axis connection (referring to Fig. 2~3), and the broken line of fractal structure unit is by Huang
Copper cash is made, a diameter of 3mm.The spinning solution prepared is injected into spinning manifold by solution feed pump (routine techniques)
Cylindrical reservoir in, set motor speed as 10rev/min, by 20kV high direct voltages introduce spinning solution in, adjustment connects
It is 18cm to receive distance.Start motor, after electrostatic spinning process stabilization, set and receive the time as 10min.Gained Nanowire
Dimension average diameter is 279.58nm, and CV values are 8.86%.The nanofiber SEM that Figure 10 is the PVDF-HFP that mass fraction is 13%
Picture.
Embodiment 2
The spinneret formed using the Feng Kehe fractal structures of 5 anchor ring shapes is carried out the more jet flow static electricities of needleless hair style and spun, and each divides shape
Structure electrospinning unit is by 4 spokes through center and middle axis connection (referring to Fig. 4~5), the annuli arrangement of fractal structure unit
It is made up of aluminium flake, thickness 5mm.The spinning solution prepared is injected into spinning manifold by solution feed pump (routine techniques)
In interior cylindrical reservoir, motor speed is set as 20rev/min, and 22kV high direct voltages are introduced in spinning solution, adjustment
It is 20cm to receive distance.Start motor, after electrostatic spinning process stabilization, set and receive the time as 10min.Gained nanometer
Average fibre diameter is 276.93nm, and CV values are 13.40%.Figure 11 is the nanofiber for the PVDF-HFP that mass fraction is 13%
SEM pictures.
Embodiment 3
The spinneret formed using 5 plane Feng Kehe fractal structures is carried out the more jet flow static electricities of needleless hair style and spun, and each divides shape
Structure electrospinning unit is serially connected (referring to Fig. 6~7) by the axis through center, and the annuli arrangement of fractal structure unit is not by
Rust steel sheet is made, thickness 4mm.The spinning solution prepared is injected into manifold by solution feed pump (routine techniques)
In internal cylindrical reservoir, motor speed is set as 30rev/min, 22kV high direct voltages are introduced in spinning solution, is adjusted
The whole distance that receives is 19cm.Start motor, after electrostatic spinning process stabilization, set and receive the time as 10min.Gained is received
Rice average fibre diameter is 308.92nm, and CV values are 10.04%.Figure 12 is the Nanowire for the PVDF-HFP that mass fraction is 13%
Tie up SEM pictures.
Embodiment 4
The spinneret formed using the Feng Kehe fractal structures of 5 helical ring planars is carried out the more jet flow static electricities of needleless hair style and spun, each
The both ends of fractal structure electrospinning unit converge on the axis (referring to Fig. 8~9) through center, the spiral anchor ring of fractal structure unit
Structure is made up of stainless sheet steel, thickness 4mm.The spinning solution prepared is injected by solution feed pump (routine techniques)
In cylindrical reservoir in spinning manifold, motor speed is set as 25rev/min, and it is molten that 23kV high direct voltages are introduced into spinning
In liquid, it is 22cm that adjustment, which receives distance,.Start motor, after electrostatic spinning process stabilization, set and receive the time as 10min.
Gained nanofiber average diameter is 310.54nm, and CV values are 9.23%.
Embodiment 5
The spinneret formed using the Feng Kehe fractal structures of 5 helical planars is carried out the more jet flow static electricities of needleless hair style and spun, often
The both ends of individual fractal structure electrospinning unit converge on the axis (referring to Fig. 1~2) through center, the helical of fractal structure unit
Face structure is made up of brass sheet, thickness 3mm.The spinning solution prepared is injected into by solution feed pump (routine techniques)
In cylindrical reservoir in spinning manifold, motor speed is set as 40rev/min, and 25kV high direct voltages are introduced into spinning solution
Interior, it is 23cm that adjustment, which receives distance,.Start motor, after electrostatic spinning process stabilization, set and receive the time as 10min.
Gained nanofiber average diameter is 315.27nm, and CV values are 8.81%.
Claims (12)
1. a kind of needle-less electrostatic spinning component based on fractal structure, by spinning manifold, spinneret, reservoir, axis,
Receiving electrode and inlet and liquid outlet are formed.The spinning header structure can be equidistant along central rotating shaft with rounded or helical form
Arrangement.Described spinning manifold is made up of two parts：Top half has semicircle shell, and the latter half has half of pros
Body case, when two parts fit together composition spinning manifold, it is hollow circuit cylinder that the inside, which contains one along spinneret length direction,
The horizontal reservoir of body or hollow square body, for depositing spinning solution, and its liquid level is less than the position of central shaft；Spinning solution
The height in face is highly controlled by liquid outlet, and inlet is located at its lowest position of the relative side of liquid outlet.Described spinning
Head, axis and reservoir have identical center line, and the center line is also the center of circle of spinning manifold top half round sides.
Offer that length is slightly less than spinneret length, width is less than spinneret diameter directly over described spinning manifold along arcuate surface
Spinning window, formed semi open model spinning manifold structure.
2. the needle-less electrostatic spinning head according to claim 1 based on fractal structure, it is characterised in that its spinning
Head is made up of two level Feng's Koch curve fractal structure, namely its length of side and the composition of curve shape defer to following rule：(1) three
One line segment of decile；(2) center section of first step division trisection is substituted with an equilateral triangle；(3) at each
On straight line, second step is repeated.Feng's Koch curve is above step repeatedly to the LIMIT RESULTS of unlimited iteration.Change for the first time
The figure that generation is formed has 5 nodes, referred to as one-level Feng Koch curve；The curve that second of iteration is formed has 17 knots
Point, referred to as two level Feng Koch curve, the rest may be inferred.
3. the needle-less electrostatic spinning head according to claim 1 based on fractal structure, it is characterised in that its spinneret
The Feng Kehe fractal structures electrospinning unit contained can be made up of according to the diametric requirements of spinneret 4~10 fractal structures.
4. the needle-less electrostatic spinning head according to claim 1 based on fractal structure, it is characterised in that spinneret by
Circular or spiral Feng's kock fractal structure composition, and spinning electrode can (parallel) arrangement, staggeredly combination side by side.
5. the needle-less electrostatic spinning head according to claim 1 based on fractal structure, it is characterised in that spinneret is in
During circular Feng Kehe fractal structures, the shape of spinneret can be polyline shaped, anchor ring shape or plane；Spinneret is helically
During shape Feng's kock fractal structure, the shape of spinneret can be polyline shaped, anchor ring shape or plane.
6. the needle-less electrostatic spinning head according to claim 1 based on fractal structure, it is characterised in that work as spinneret
During using the Feng Kehe fractal structures of polyline shaped or anchor ring shape, the Feng Kehe fractal structures of its broken line or anchor ring shape are by through center
Several spokes and middle axis connection.
7. the needle-less electrostatic spinning head according to claim 1 based on fractal structure, it is characterised in that work as spinneret
During using plane Feng Kehe fractal structures, its axis is through plane Feng Kehe fractal structures center and is attached thereto.
8. the needle-less electrostatic spinning head according to claim 1 based on fractal structure, it is characterised in that work as spinneret
During using spiral helicine Feng's kock fractal structure, its spiral helicine Feng's kock fractal structure converges on respectively at both ends to be passed through
The axis of the heart, both ends are respectively on spinning manifold two sides.
9. the needle-less electrostatic spinning head according to claim 1 based on fractal structure, it is characterised in that form spinning
The thickness of Feng's Koch curve structure of head is 0.1~10mm, a diameter of 0.1~10mm of loop wire, apart from reservoir inner surface distance
For 0.5~5cm, spinning length of window and width are respectively 10cm-1.8m and 5cm-90cm, spinning manifold height and width
15cm-1m, spinning manifold length 30cm-2m, each the filament spinning component dimensions and spinneret quantity that specific electrostatic spinning needs
It can need to be designed and assemble according to actual product.
10. the needle-less electrostatic spinning head according to claim 1 based on fractal structure, it is characterised in that spinneret is in
During circular Feng's Koch curve structure, the structure can be carried out along spinning electrode length direction (the breadth direction of electrospinning device)
The distance between multiple concatenation arrangements, each circular Feng's Koch curve structure are 1~30cm.
It is 11. according to claim 1 based on the needle-less electrostatic spinning head for dividing shape, it is characterised in that spinneret is helically
During shape Feng's Koch curve structure, according to the requirement of electrospinning device breadth, spiral shell of the fractal structure along spinneret length direction
Away from for 1~30cm.
12. the needle-less electrostatic spinning head according to claim 1 based on fractal structure, it is characterised in that for making
The material of spinneret and axis is conductive metal material or insulating properties nonmetallic materials.Spinneret and axis are conductive metal
During material, applied voltage can be connected on metal spinneret by axis, can also be accessed inside spinning solution.Spinneret and
When the material of axis is insulating properties nonmetallic materials, applied voltage is directly connected into inside spinning solution.
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| CN112430858A (en) * | 2020-11-11 | 2021-03-02 | 青岛大学 | Electrostatic spinning equipment |
| CN112575444A (en) * | 2020-11-23 | 2021-03-30 | 南通纺织丝绸产业技术研究院 | High-protection high-moisture-permeability nanofiber membrane and preparation of medical protective equipment thereof |
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| CN110512291A (en) * | 2018-05-21 | 2019-11-29 | 天津工业大学 | A kind of radial electrospinning nozzle based on diamond shape blade |
| CN110512292A (en) * | 2018-05-21 | 2019-11-29 | 天津工业大学 | A kind of radial electrospinning nozzle based on rectangular paddle |
| CN109750360A (en) * | 2019-03-21 | 2019-05-14 | 东华大学 | A kind of automatically cleaning screw type electrostatic spinning nozzle and its application method |
| CN109881268A (en) * | 2019-03-21 | 2019-06-14 | 东华大学 | A kind of screw type electrostatic spinning nozzle that spinning solution curvature is controllable and its application method |
| CN109750360B (en) * | 2019-03-21 | 2021-05-25 | 东华大学 | Self-cleaning spiral electrostatic spinning nozzle and use method thereof |
| CN109881268B (en) * | 2019-03-21 | 2021-08-31 | 东华大学 | Spiral electrostatic spinning nozzle with controllable spinning solution curvature and application method thereof |
| CN110230107A (en) * | 2019-04-23 | 2019-09-13 | 上海云同纳米材料科技有限公司 | Needleless electrostatic spinning head and electrostatic spinning generating device |
| CN112430858A (en) * | 2020-11-11 | 2021-03-02 | 青岛大学 | Electrostatic spinning equipment |
| CN112575444A (en) * | 2020-11-23 | 2021-03-30 | 南通纺织丝绸产业技术研究院 | High-protection high-moisture-permeability nanofiber membrane and preparation of medical protective equipment thereof |
| CN114411272A (en) * | 2021-11-02 | 2022-04-29 | 武汉纺织大学 | Secondary fractal spiral electrostatic spinning head and tertiary fractal spiral electrostatic spinning head |
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