CN108691016A - A kind of radial electrospinning nozzle based on trapezoid blade - Google Patents
A kind of radial electrospinning nozzle based on trapezoid blade Download PDFInfo
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- CN108691016A CN108691016A CN201810799427.0A CN201810799427A CN108691016A CN 108691016 A CN108691016 A CN 108691016A CN 201810799427 A CN201810799427 A CN 201810799427A CN 108691016 A CN108691016 A CN 108691016A
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- radial
- trapezoid blade
- blade
- trapezoid
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The present invention relates to a kind of radial electrospinning nozzle based on trapezoid blade, belongs to nanofiber preparing technical field, is made of radial spinning nozzle and cylindrical tube.Wherein, radial spinning nozzle is made of the circumferentially identical trapezoid blade of equally distributed multiple structures, each trapezoid blade opened with certain angle outward, radial;Radial spinning nozzle and cylinder bore are equal and be completely embedded, be smooth, it can be achieved that the accessible of spin fluid transports.Radial electrospinning nozzle inside diameter of the present invention based on trapezoid blade is big, is conducive to avoid blockage problem, can carry out electrostatic spinning to high concentration spinning solution;Have the function of that the radial spinning nozzle of trapezoid blade has stable droplet, while increasing spinneret liquid level area, multiple spinning jets can be generated, to increase spinning yield;Its tubular structure can realize that closed controllable feed flow, solvent be not volatile;There is trapezoid blade 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 radial electrospinning nozzle based on trapezoid blade belongs to and receives
Rice technical field of fiber preparation.
Background technology
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.Single gold may be used in solution electrostatic spinning apparatus
Belong to capillary needle tubing and realizes spinning, the skill as disclosed in patent 200420020596.3,200410025622.6 etc. as spinneret
Art.But since traditional single metal capillary needle tubing electrostatic spinning yield is relatively low, industrialization demand is cannot be satisfied, restriction is become
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 echelon formation
Form Multi needle Jing electricity Fang Sizhuanzhi [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 in the world, such as 200420107832.5,201510278266.7, WO2007035011
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 both 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 easily blocks, 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 spiral winding Jing electricity Fang Sizhuanzhi [ of the first generation " nanometer spider " opened, Lin Tong et al.;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
Electricity Fang Sijishu [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.]Deng.Compared with Multi needle electrostatic spinning technique, above-mentioned needle-less electrostatic spinning technique is with no blocking, easy to clean and life
Production efficiency such as greatly improves at the advantages.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 high energy consumption;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.The problem of for needle-less electrostatic spinning high energy consumption, there is researcher to propose base
In Shi Xinzhen [ZL201220297190.4], tip Shi [ZL201310186515.0], Ju Chishi [ZL201210347514.5]
There is tip, spinning critical voltage and energy consumption to be greatly lowered for equal electrostatic spinning techniques, such spinneret, still
There are still the problems that fiber quality caused by open feed flow is difficult to control.
Invention content
In view of the deficiencies of the prior art, the technical problem to be solved by the invention is to provide a kind of based on trapezoid blade
Radial electrospinning nozzle solves the blocking of conventional capillary needle tube type electrostatic spinning apparatus syringe needle, inconvenient cleaning and needle-less electrostatic
The problems such as fiber quality caused by spining technology high energy consumption, open feed flow is difficult to control.
The technical solution that the present invention solves the technical problem is to provide a kind of radial electrospinning spray based on trapezoid blade
Mouth, by with trapezoid blade radial spinning nozzle and cylindrical tube be composed.The radial spinning nozzle is located at the cylinder
The top (when upward spinneret) of pipe or lower part (when downward spinneret), the internal diameter of the radial spinning nozzle and the cylindrical tube it is interior
Diameter is equal and is completely embedded, is smooth, it can be achieved that the accessible of spin fluid transports;The radial spinning nozzle is by circumferentially uniform
Multiple structures identical trapezoid blade composition of distribution, each trapezoid blade opened with certain angle outward is radial, with
The angular range of vertical direction is 0 °~90 ° (including 0 ° and 90 °), and trapezoid blade generally metal or part are metal material;
The trapezoid blade quantity is the positive integer more than or equal to 2;The shape of the trapezoid blade is trapezoidal, and tip position can be with chamfering
Or fillet;The thickness of the trapezoid blade is 0.1~10mm (including 0.1mm and 10mm);The trapezoid blade is along its length
Planar or curved, and length of run along its length is 1~50mm (including 1mm and 50mm);The cylindrical tube is whole
Body or the hollow circular-tube that part is metal material are constituted, and round tube inside diameter is 1~30mm (including 1mm and 30mm), length and wall thickness
It is unlimited;According to the feature of polymer spinning solution system used, PTFE, Teflon can be carried out to the cylinder pipe internal surface
Spraying/magnetron sputtering processing of TFE, Teflon PFA, Teflon FEP, are suitble to the requirement of different polymer dope systems,
With achieve the purpose that reduce surface tension, spinning solution be not easy with the adherency of cylinder pipe internal surface, prevent spinneret from blocking;It is described to have
Trapezoid blade obtains in radial spinneret mouth structure, in the interface of trapezoid blade and cylindrical tube, may exist between trapezoid blade
Certain interval or gapless;The cylinder bore is big, is not easy to plug, and is suitable for the polymer spinning solution system to high concentration
Electrostatic spinning is carried out, concentration range is different depending on specific polymer dope system and changes, and range can be 20~80%.
It is of the present invention based on the radial of trapezoid blade compared with existing Multi needle and needle-less electrostatic spinning apparatus
Electrospinning nozzle inside diameter is big, is conducive to avoid conventional capillary syringe needle blockage problem, can be to the polymer spinning solution of high concentration
System carries out electrostatic spinning;Radial spinning nozzle increases the interfacial tension between spinning nozzle and spinning solution, can be for a long time
Drop is gripped, there is stable droplet;Meanwhile radial spinning nozzle 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;Based on trapezoid blade
Radial electrospinning nozzle have tubular structure, it can be achieved that closed controllable feed flow, solvent be not volatile;Based on trapezoid blade
The trapezoid blade of radial electrospinning nozzle has point effect, and higher electrostatic field force, reduction can be generated under identical voltage
Electrostatic spinning energy consumption;In addition, the radial electrospinning nozzle based on trapezoid blade can apply high direct voltage or ac high-voltage.
Description of the drawings
Fig. 1 is that the present invention is based on a kind of radial embodiments of electrospinning nozzle of trapezoid blade --- there are 2 trapezoid blades
And it is flared out the radial electrospinning nozzle arrangements schematic diagram that angle is 0 °;
Fig. 2 is that the present invention is based on a kind of radial embodiments of electrospinning nozzle of trapezoid blade --- there are 4 trapezoid blades
Radial electrospinning nozzle arrangements schematic diagram;
Fig. 3 is that the present invention is based on a kind of radial embodiments of electrospinning nozzle of trapezoid blade --- there are 4 trapezoid blades
Radial electrospinning nozzle front view and vertical view;
Fig. 4 is that the present invention is based on a kind of radial embodiment of electrospinning nozzle --- the trapezoid blades with chamfering of trapezoid blade
Radial electrospinning nozzle arrangements schematic diagram;
Fig. 5 be the present invention is based on trapezoid blade a kind of radial embodiment of electrospinning nozzle --- being flared out angle is
The front view and vertical view of 90 ° of the radial electrospinning nozzle of trapezoid blade;
Fig. 6 is one kind when being produced for scale nanofiber the present invention is based on the radial electrospinning nozzle of trapezoid blade
Embodiment --- the electrostatic spinning head of the radial electrospinning nozzle linear array arrangement with 4 trapezoid blades.
Specific implementation mode
The present invention provides a kind of radial electrospinning nozzle (referring to Fig. 1~6) based on trapezoid blade, by with trapezoidal leaf
The radial spinning nozzle 11 and cylindrical tube 12 of piece are composed.It is further discussed below this hair with reference to specific embodiment and its attached drawing
Bright, specific embodiment is only used for further illustrating the present invention, and does not constitute the limitation to the present patent application claim.
Embodiment one:Shown in Fig. 1, for a kind of embodiment of the present invention --- the radial electrospinning with 2 trapezoid blades
Nozzle, the radial spinning nozzle 11 are located at the lower part (downward spinneret) of the cylindrical tube 12, the internal diameter of radial spinning nozzle 11
It is equal with the internal diameter of cylindrical tube 11 and be completely embedded, be smooth, it can be achieved that the accessible of spin fluid transports;The radial spinneret
Mouth 11 is made of the circumferentially identical trapezoid blade of equally distributed 2 structures, and each trapezoid blade is flared out 0 °, trapezoidal leaf
Sheet material is stainless steel, and the non-chamfering of trapezoidal tip, trapezoid blade thickness is 0.1mm, and trapezoid blade is planar along its length,
Trapezoid blade length is 4mm;The material of the cylindrical tube 12 is stainless steel, internal diameter 1mm, length 4mm, wall thickness 0.1mm;It is described
The internal diameter of cylindrical tube 12 has taken 1mm, relatively small, therefore sprays PTFE to the inner surface of cylindrical tube 12, to avoid blocking;Trapezoidal
The interface of blade and cylindrical tube 12, there are the gaps 0.7mm between trapezoid blade.
Embodiment two:Shown in Fig. 2 and Fig. 3, for a kind of embodiment of the present invention --- it is radial with 4 trapezoid blades
Electrospinning nozzle, the radial spinning nozzle are located at the lower part of the cylindrical tube, the internal diameter of radial spinning nozzle and cylindrical tube it is interior
Diameter is completely the same and is completely embedded smooth, it can be achieved that the accessible of spin fluid transports;The radial spinning nozzle is equal by circumference
The identical trapezoid blade composition of 4 structures of cloth, each trapezoid blade are flared out 30 °, and trapezoid blade material is stainless steel, ladder
Shape vane thickness is 0.2mm, and trapezoid blade is planar along its length, trapezoid blade length 4mm;The material of the cylindrical tube 12
Material is stainless steel, internal diameter 1.6mm, length 5mm, wall thickness 0.2mm;The internal diameter of the cylindrical tube 12 has taken 1.6mm, relatively
It is small, therefore PTFE is sprayed to the inner surface of cylindrical tube 12, to avoid blocking;It is trapezoidal in the interface of trapezoid blade and cylindrical tube 12
There are the gaps 0.2mm between blade.
Embodiment three:Shown in Fig. 4, for a kind of embodiment of the present invention --- the radial electrospinning spray of the trapezoid blade with chamfering
Mouth, the radial spinning nozzle 11 are located at the lower part (downward spinneret) of the cylindrical tube 12, the internal diameter of radial spinning nozzle 11 and
The internal diameter of cylindrical tube 11 is equal and is completely embedded, is smooth, it can be achieved that the accessible of spin fluid transports;The radial spinning nozzle
11 are made of the circumferentially identical trapezoid blade of equally distributed multiple structures, and each trapezoid blade is flared out 60 °, trapezoidal leaf
Sheet material is stainless steel, and trapezoid blade thickness is 10mm, and trapezoidal tip band 2mm chamferings, trapezoid blade is in plane along its length
Shape, trapezoid blade length are 50mm;The material of the cylindrical tube 12 is stainless steel, and internal diameter 30mm, length 40mm, wall thickness is
10mm;The inner surface of the cylindrical tube 12 does not spray/magnetron sputtering processing, at the interface of trapezoid blade and cylindrical tube 12
Locate, there are the gaps 0.5mm between trapezoid blade.
Example IV:It is a kind of embodiment of the present invention shown in Fig. 5 --- it is flared out the trapezoid blade that angle is 90 °
Radial electrospinning nozzle, the radial spinning nozzle 11 are located at the top (upward spinneret) of the cylindrical tube 12, radial spinneret
Mouthfuls 11 internal diameter and the internal diameter of cylindrical tube 11 are equal and be completely embedded, be smooth, it can be achieved that the accessible of spin fluid transports;It is described
Radial spinning nozzle 11 is made of the circumferentially identical trapezoid blade of equally distributed multiple structures, and each trapezoid blade is opened outward
90 ° are opened, trapezoid blade material is stainless steel, and the non-chamfering of trapezoidal tip, trapezoid blade thickness is 0.2mm, and trapezoid blade is along length
Direction is planar, and trapezoid blade length is 10mm;The material of the cylindrical tube 12 be stainless steel, internal diameter 30mm, length 30mm,
Wall thickness is 0.2mm;The inner surface of cylindrical tube 12 does not spray/magnetron sputtering processing;At the interface of trapezoid blade and cylindrical tube
Locate, gap is not present between trapezoid blade.
Embodiment five:Shown in Fig. 6, scale is used for for the radial electrospinning nozzle of the present invention based on trapezoid blade
A kind of embodiment when nanofiber produces --- the radial electrospinning nozzle linear array with 4 trapezoid blades is arranged quiet
Electrospun head, wherein including 7 radial electrospinning nozzles with trapezoid blade, the spacing of radial electrospinning nozzle is 20mm.
Claims (8)
1. a kind of radial electrospinning nozzle based on trapezoid blade, by radial spinning nozzle and cylindrical tube group with trapezoid blade
It closes, the radial spinning nozzle with trapezoid blade is located at top (when upward spinneret) or lower part (the downward spinneret of cylindrical tube
When), with trapezoid blade radial spinning nozzle internal diameter and cylindrical tube internal diameter it is equal and be completely embedded, it is smooth, it can be achieved that
The accessible of spin fluid transports.
2. the radial electrospinning nozzle according to claim 1 based on trapezoid blade, it is characterised in that:Described has ladder
The radial spinning nozzle of shape blade is made of the circumferentially identical trapezoid blade of equally distributed multiple structures, each trapezoid blade
Opened with certain angle outward, radial, the angular range with vertical direction is 0 °~90 ° (including 0 ° and 90 °), trapezoidal
Blade generally metal or part are metal material.
3. the radial electrospinning nozzle based on trapezoid blade according to claim 1-2, it is characterised in that:Described has
The trapezoid blade quantity of the radial spinning nozzle of trapezoid blade is the positive integer more than or equal to 2.
4. the radial electrospinning nozzle based on trapezoid blade according to claim 1-3, it is characterised in that:Described is trapezoidal
The shape of blade is trapezoidal, and tip position can be with chamfering or fillet;The thickness of the trapezoid blade be 0.1~10mm (including
0.1mm and 10mm).
5. the radial electrospinning nozzle based on trapezoid blade according to claim 1-4, it is characterised in that:Described is trapezoidal
Blade is planar along its length or curved, and length of run along its length be 1~50mm (including 1mm and
50mm)。
6. the radial electrospinning nozzle based on trapezoid blade according to claim 1-5, it is characterised in that:The cylinder
The hollow circular-tube that pipe is whole or part is metal material is constituted, and round tube inside diameter is 1~30mm (including 1mm and 30mm), length and
Wall thickness is unlimited.
7. the radial electrospinning nozzle based on trapezoid blade according to claim 1-6, it is characterised in that:According to used poly-
The feature of object spinning solution system is closed, PTFE, Teflon TFE, Teflon PFA, Teflon can be carried out to cylinder pipe internal surface
The spraying of FEP/magnetron sputtering processing, is suitble to the requirement of different polymer dope systems, and surface tension, spinning are reduced to reach
Liquid is not easy and the adherency of cylinder pipe internal surface, the purpose for preventing spinneret from blocking.
8. the radial electrospinning nozzle based on trapezoid blade according to claim 1-7, it is characterised in that:Described has
It, can be in the interface of trapezoid blade and the cylindrical tube, between trapezoid blade in the radial spinneret mouth structure of trapezoid blade
There are certain interval or gaplesss.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810799427.0A CN108691016A (en) | 2018-07-19 | 2018-07-19 | A kind of radial electrospinning nozzle based on trapezoid blade |
| CN201910706505.2A CN110273190B (en) | 2018-07-19 | 2019-07-19 | Open electrospinning nozzle based on annular uniform distribution multiple blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810799427.0A CN108691016A (en) | 2018-07-19 | 2018-07-19 | A kind of radial electrospinning nozzle based on trapezoid blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108691016A true CN108691016A (en) | 2018-10-23 |
Family
ID=63851677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810799427.0A Withdrawn CN108691016A (en) | 2018-07-19 | 2018-07-19 | A kind of radial electrospinning nozzle based on trapezoid blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108691016A (en) |
-
2018
- 2018-07-19 CN CN201810799427.0A patent/CN108691016A/en not_active Withdrawn
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20181023 |