CN108866646A - A kind of top is the horn-like electrospinning nozzle of differential diamond shape blade - Google Patents
A kind of top is the horn-like electrospinning nozzle of differential diamond shape blade Download PDFInfo
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- CN108866646A CN108866646A CN201810798904.1A CN201810798904A CN108866646A CN 108866646 A CN108866646 A CN 108866646A CN 201810798904 A CN201810798904 A CN 201810798904A CN 108866646 A CN108866646 A CN 108866646A
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- Prior art keywords
- differential
- diamond shape
- shape blade
- horn
- electrospinning nozzle
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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
Abstract
The present invention relates to the horn-like electrospinning nozzles that a kind of top is differential diamond shape blade, belong to nanofiber preparation technical field, are made of cylindrical tube, horn mouth and differential diamond shape blade.Differential diamond shape blade is circumferentially uniformly distributed at the top of bell-mouthed big mouth, and horn mouth is located at the top or lower part of cylindrical tube, and bell-mouthed osculum is equal with the internal diameter of cylindrical tube junction and is completely embedded, is smooth, it can be achieved that the accessible of spin fluid transports.Top of the present invention is that the horn-like electrospinning nozzle inside diameter of differential diamond shape blade is big, is conducive to avoid syringe needle blockage problem, can carry out electrospinning to high concentration spinning solution；Differential diamond shape blade at the top of horn-like spinning nozzle plays the role of stable droplet, while increasing spinneret liquid level area, can produce multiple spinning jets, increases spinning yield；Its tubular structure can realize that closed controllable feed flow, solvent be not volatile；Differential diamond shape blade at the top of horn mouth has tip, can generate more high field intensity, can reduce energy consumption.
Description
Technical field
The present invention relates to a kind of electrospinning nozzle, especially a kind of top is the horn-like electrospinning nozzle of differential diamond shape blade,
Belong to nanofiber preparation technical field.
Background technique
Electrostatic spinning is the electric field force strained polymer solution generated by high-voltage DC power supply or melt to prepare nanometer
The method of fiber is to prepare one of most effective technology of nanofiber at present.Solution electrostatic spinning apparatus can be using single gold
Belong to capillary needle tubing as spinneret and realizes spinning, the skill as disclosed in patent 200420020596.3,200410025622.6 etc.
Art.But since traditional single metal capillary needle tubing electrostatic spinning yield is lower, it is unable to satisfy industrialization demand, becomes restriction
Its bottleneck problem developed, therefore, Theron etc. is by multiple metal kernel small needle tubes in the way of arranged in a straight line or rectangular arranged
Form Multi needle electrostatic spinning apparatus [S.A.THERON, A.L.YARIN, E.ZUSSMAN, E.KROLL.Multiple jets
in electrospinning：Experiment and modeling.Polymer, 2005,46 (9)：2889-2899.], state
It is interior and also occur many similar patents, such as 200420107832.5,201510278266.7, WO2007035011 in the world
Disclosed technology.Multi needle electrostatic spinning technique spinneret position is controllable, feeding liquid measure, controllable, spinning process is stablized, in yield
Have compared to single needle electrostatic spinning and greatly improve, but since there are Coulomb repulsions between each syringe needle, causes intermediate field strength
End effect (edge effect) phenomenon that small, both ends field strength is big and the spinning jet of two sides syringe needle deviates outward, causes
The problems such as web is irregular to both sides thickness from centre, in addition, conventional metals capillary needle bore is small, syringe needle is easily blocked, and not
Easy to clean, this fundamentally hinders the industrialized process of Multi needle electrostatic spinning.
Then, researcher proposes the technology and equipment of a large amount of needle-less electrostatic spinnings, such as：WO2005024101 is public
The first generation " nanometer spider " opened, Lin Tong et al. spiral winding electrostatic spinning apparatus [WANG X, NIU H, WANG X,
LIN T.Needleless electrospinning of uniform nanofibers using spiral coil
spinnerets[J].Journal of Nanomaterials,2012,2012(10):3-9.], the bubble of He Jihuan et al. it is quiet
Electrospinning [HE J H, LIU Y, XU L, et al.Biomimic fabrication of electrospun
Nanofibers with high-throughput [J] .Chaos, Solitons and Fractals, 2008,37：643-
651.] etc..Compared with Multi needle electrostatic spinning technique, above-mentioned needle-less electrostatic spinning technique is with no blocking, easy to clean and life
It produces efficiency and the advantages such as greatly improves.But there are still numerous common problems for such needle-less electrospinning process：Spinning emitter
It is mostly no tip-type face, and the area that pressurizes is big, to excite taylor cone to need higher voltage, so as to cause energy consumption height；Secondly,
Due to being that liquid surface freely recombinates to form injection stream, so position and state that taylor cone generates are uncontrollable, gained fiber is thick
Thin irregular, product quality is difficult to control；Hold in addition, the emitter of needle-less electrostatic spinning is immersed in greatly open spinning solution
In device (except second generation nanometer spider, but the dynamic normal spinning of influence of its fluid supplier Transverse), solvent is volatile, and solution concentration occurs
Change, it is unstable so as to cause spinning quality.For the high problem of needle-less electrostatic spinning energy consumption, there is researcher to propose base
In solid needle [ZL201220297190.4], tip formula [ZL201310186515.0], serration type [ZL201210347514.5]
Equal electrostatic spinning techniques, such spinneret have tip, and spinning critical voltage and production energy consumption are greatly lowered, still
There are still the problems that fiber quality caused by open feed flow is difficult to control.
Summary of the invention
It in view of the deficiencies of the prior art, is differential diamond shape the technical problem to be solved by the invention is to provide a kind of top
The horn-like electrospinning nozzle of blade solves the blocking of conventional capillary needle tube type electrostatic spinning apparatus syringe needle, inconvenient cleaning and needleless
The problems such as fiber quality caused by head electrostatic spinning technique energy consumption height, open feed flow is difficult to control.
It is the horn-like of differential diamond shape blade that the technical solution that the present invention solves the technical problem, which is to provide a kind of top,
Electrospinning nozzle is made of cylindrical tube, horn mouth and differential diamond shape blade.The differential diamond shape blade is circumferentially uniformly distributed in institute
It states at the top of bell-mouthed big mouth, the horn mouth is located at top (when upward spinneret) or lower part (the downward spinneret of the cylindrical tube
When), the bell-mouthed osculum is equal with the internal diameter of the cylindrical tube junction, and is completely embedded, is smooth, it can be achieved that spinning stream
The accessible of body transports；The shape of the differential diamond shape blade is rectangle, and the tip position of the differential diamond shape blade can be with
Angle or fillet；The quantity of the differential diamond shape blade is the positive integer more than or equal to 2；The differential diamond shape blade with a thickness of
0.1~10mm (including 0.1mm and 10mm)；The differential diamond shape blade is planar along its length or curved form, and along length
The length of run for spending direction is 1~50mm (including 1mm and 50mm)；The differential diamond shape blade certain angle of flare up outward
Degree, the angular range with vertical direction are 0 °~90 ° (including 0 ° and 90 °)；The loudspeaker open height be 0.1~100mm (including
0.1mm and 100mm), cone angle is 0 °~90 ° (not including 0 ° and 90 °), and wall thickness is 0.1~10mm (including 0.1mm and 10mm)；
The cylinder bore is 1~30mm (including 1mm and 30mm), and length and wall thickness are unlimited；According to polymer spinning solution used
The feature of system can carry out the spray of PTFE, Teflon TFE, Teflon PFA, Teflon FEP to the cylinder pipe internal surface
Painting/magnetron sputtering processing, is suitble to the requirement of different polymer dope systems, and to reach reduction surface tension, spinning solution is not easy
With spinneret surface adhesion, the purpose for preventing spinneret from blocking；The differential diamond shape blade and the bell-mouthed interface, institute
It states and may exist certain interval or gapless between differential diamond shape blade；The top is the horn-like electrospinning of differential diamond shape blade
Nozzle inside diameter is big, is not easy to plug, and is suitable for carrying out the polymer spinning solution system of high concentration electrostatic spinning, concentration range view
Specific polymer dope system is different and changes, and range can be 20~80%.
Compared with existing Multi needle and needle-less electrostatic spinning apparatus, the top of the present invention that is based on is differential rhomboid leaf
The horn-like electrospinning nozzle inside diameter of piece is big, is conducive to avoid syringe needle blockage problem, can be to the polymer spinning solution of high concentration
System carries out electrospinning；Differential diamond shape blade at the top of horn mouth increases the interfacial tension between spinning nozzle and spinning solution, energy
It is enough to grip drop for a long time, there is stable droplet, meanwhile, horn mouth increases spinneret liquid level area, forms free liquid
Body surface face can excite multiple taylor cones to generate multiple spinning jets, be conducive to increase spinning yield；It is micro- based on top
The horn-like electrospinning nozzle of divided diamond blade has tubular structure, it can be achieved that closed controllable feed flow, solvent be not volatile；Horn mouth
The differential diamond shape blade at top has tip, and higher electrostatic field force can be generated under identical voltage, reduces electrostatic spinning energy
Consumption；In addition, high direct voltage or ac high-voltage can be applied based on the horn-like electrospinning nozzle that top is differential diamond shape blade.
Detailed description of the invention
Fig. 1 is horn-like a kind of embodiment of electrospinning nozzle that present invention top is differential diamond shape blade --- it is micro- with 2
Divided diamond blade, differential diamond shape blade are flared out the electrospinning nozzle arrangements schematic diagram that angle is 0 °, horn mouth cone angle is 30 °；
Fig. 2 is horn-like a kind of embodiment of electrospinning nozzle that present invention top is differential diamond shape blade --- it is micro- with 6
Divided diamond blade, differential diamond shape blade are flared out the electrospinning nozzle arrangements schematic diagram that angle is 45 °, horn mouth cone angle is 45 °；
Fig. 3 is horn-like a kind of embodiment of electrospinning nozzle that present invention top is differential diamond shape blade --- it is micro- with 6
Divided diamond blade, differential diamond shape blade be flared out the electrospinning nozzle that angle is 45 °, horn mouth cone angle is 45 ° main view and
Top view；
When Fig. 4 is that the horn-like electrospinning nozzle that present invention top is differential diamond shape blade is produced for scale nanofiber
A kind of embodiment --- 7 top be differential diamond shape blade horn-like electrospinning nozzle linear array arrange electrostatic spinning
Head.
Specific embodiment
The present invention provides the horn-like electrospinning nozzles (referring to Fig. 1~4) that a kind of top is differential diamond shape blade, by cylinder
The differential diamond shape blade 13 at 12 top of pipe 11, horn mouth 12 and horn mouth is composed.It is combined with specific embodiments below and its attached
Figure is further discussed below the present invention, and specific embodiment is only used for further illustrating the present invention, does not constitute and want to the present patent application right
The limitation asked.
Embodiment one：Shown in Fig. 1, for the present invention is based on a kind of implementations of the radial electrospinning nozzle of differential diamond shape blade
Example --- there are 2 differential diamond shape blades, differential diamond shape blade to be flared out the electrospinning that angle is 0 °, horn mouth cone angle is 30 °
Nozzle, specially：The quantity of the differential diamond shape blade 13 is 2, is circumferentially uniformly distributed in the great Kou Ding of the horn mouth 12
Portion, the horn mouth 12 are located at the top (upward spinneret) of the cylindrical tube 11, and the horn mouth 12 connects with the cylindrical tube 11
The internal diameter for meeting place is equal, and is completely embedded, is smooth, it can be achieved that the accessible of spin fluid transports；The internal diameter of the cylindrical tube 11
1.6mm, length 5mm, wall thickness 0.2mm；12 height of horn mouth is 2mm, and cone angle is 30 °, wall thickness 0.2mm；It is described micro-
Divided diamond blade 13 is rectangle, and number 2 is opened angled outward, and the angle with vertical direction is 0 °, with a thickness of
0.2mm is in arc surfaced along its length, and length of run along its length is 3mm；13 circumference of the differential diamond shape blade are equal
It is distributed in 12 top of horn mouth；13 inner surface of cylindrical tube sprays PTFE；In the differential diamond shape blade 11 and the loudspeaker
The interface of mouth 12, there are the gaps 4.5mm between the differential diamond shape blade 11.
Embodiment two：Shown in Fig. 2 and Fig. 3, for the present invention is based on one kind of the radial electrospinning nozzle of differential diamond shape blade
Embodiment --- there are 6 differential diamond shape blades, differential diamond shape blade to be flared out, and angle is 45 °, horn mouth cone angle is 45 °
Electrospinning nozzle, specially：The horn mouth 12 is located at the lower part (downward spinneret) of the cylindrical tube 11, the horn mouth 12 and institute
The internal diameter for stating 11 junction of cylindrical tube is equal, and is completely embedded, is smooth, it can be achieved that the accessible of spin fluid transports；It is described micro-
Divided diamond blade 13 is circumferentially uniformly distributed in 12 top of horn mouth；The internal diameter 1.6mm of the cylindrical tube 11, length 5mm,
Wall thickness is 0.2mm；12 height of horn mouth is 2mm, and cone angle is 45 °, wall thickness 0.2mm；The differential diamond shape blade 11 is
Rectangle, number 6 is opened angled outward, and the angle with vertical direction is 45 °, with a thickness of 0.2mm, along length side
To planar, and length of run along its length is 3mm；13 inner surface of cylindrical tube do not spray/magnetron sputtering at
Reason, there are 0.5mm between the interface of the differential diamond shape blade 11 and the horn mouth 12, the differential diamond shape blade 11
Gap.
Embodiment three：It is that the horn-like electrospinning nozzle that top of the invention is differential diamond shape blade is used for scale shown in Fig. 4
A kind of embodiment when nanofiber produces --- 7 tops are that the horn-like electrospinning nozzle linear array of differential diamond shape blade is arranged
The electrostatic spinning head of cloth, wherein be the horn-like electrospinning nozzle of differential diamond shape blade comprising 7 tops, horn-like electrospinning nozzle
Spacing is 20mm.
Claims (9)
1. a kind of top is the horn-like electrospinning nozzle of differential diamond shape blade, by cylindrical tube, horn mouth and differential diamond shape blade group
At the differential diamond shape blade is circumferentially uniformly distributed at the top of the bell-mouthed big mouth, and the horn mouth is located at the circle
The top or lower part of column tube, the bell-mouthed osculum is equal with the internal diameter of the cylindrical tube junction and is completely embedded, smooth,
The accessible of spin fluid can be achieved to transport.
2. the horn-like electrospinning nozzle that top according to claim 1 is differential diamond shape blade, it is characterised in that：It is described micro-
The quantity of divided diamond blade is the positive integer more than or equal to 2.
3. the horn-like electrospinning nozzle that top according to claim 1 to 2 is differential diamond shape blade, it is characterised in that：It is described
Differential diamond shape blade with a thickness of 0.1~10mm (including 0.1mm and 10mm).
4. the horn-like electrospinning nozzle that top according to claim 1 to 3 is differential diamond shape blade, it is characterised in that：It is described
Differential diamond shape blade is planar along its length or curved form, and length of run along its length be 1~50mm (including
1mm and 50mm).
5. top described in -4 is the horn-like electrospinning nozzle of differential diamond shape blade according to claim 1, it is characterised in that：It is described
Differential diamond shape blade open outward it is angled, with the angular range of vertical direction be 0 °~90 ° (including 0 ° and
90°)。
6. top described in -5 is the horn-like electrospinning nozzle of differential diamond shape blade according to claim 1, it is characterised in that：It is described
Loudspeaker open height is 0.1~100mm (including 0.1mm and 100mm), and cone angle is 0 °~90 ° (not including 0 ° and 90 °), and wall thickness is
0.1~10mm (including 0.1mm and 10mm).
7. top described in -6 is the horn-like electrospinning nozzle of differential diamond shape blade according to claim 1, it is characterised in that：It is described
Cylindrical tube is that internal diameter is 1~30mm (including 1mm and 30mm), and length and wall thickness are unlimited.
8. top described in -7 is the horn-like electrospinning nozzle of differential diamond shape blade according to claim 1, it is characterised in that：According to
The feature of polymer spinning solution system used can carry out PTFE, Teflon TFE, Teflon to the cylinder pipe internal surface
Spraying/magnetron sputtering processing of PFA, Teflon FEP, are suitble to the requirement of different polymer dope systems, to reach reduction table
Face tension, spinning solution are not easy and spinneret surface adhesion, the purpose for preventing spinneret from blocking.
9. top described in -8 is the horn-like electrospinning nozzle of differential diamond shape blade according to claim 1, it is characterised in that：It is described
Differential diamond shape blade and the bell-mouthed interface, there may be certain interval or continuously between the differential diamond shape blade
Gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810798904.1A CN108866646A (en) | 2018-07-19 | 2018-07-19 | A kind of top is the horn-like electrospinning nozzle of differential diamond shape blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810798904.1A CN108866646A (en) | 2018-07-19 | 2018-07-19 | A kind of top is the horn-like electrospinning nozzle of differential diamond shape blade |
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| Publication Number | Publication Date |
|---|---|
| CN108866646A true CN108866646A (en) | 2018-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810798904.1A Withdrawn CN108866646A (en) | 2018-07-19 | 2018-07-19 | A kind of top is the horn-like electrospinning nozzle of differential diamond shape blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108866646A (en) |
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2018
- 2018-07-19 CN CN201810798904.1A patent/CN108866646A/en not_active Withdrawn
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Application publication date: 20181123 |
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