CN203007508U - Solid needle electrode static spinning apparatus - Google Patents
Solid needle electrode static spinning apparatus Download PDFInfo
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- CN203007508U CN203007508U CN 201220297190 CN201220297190U CN203007508U CN 203007508 U CN203007508 U CN 203007508U CN 201220297190 CN201220297190 CN 201220297190 CN 201220297190 U CN201220297190 U CN 201220297190U CN 203007508 U CN203007508 U CN 203007508U
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Abstract
The utility model discloses a solid needle electrode static spinning apparatus including a liquid storage pool, a multiple-solid-needle electrode spinneret, a receiving device, and a high voltage static generator. The multiple-solid-needle electrode spinneret is characterized by including a metal shaft and a solid needle electrode, the radius (the distance from the tips of the solid needles to the axis) of the solid needle electrode spinneret is in the range of 5-50cm, the fabric width is in the range of 20-200cm, the needle intensity is 1-16 stitches per cm2, the solid needle electrode 22 is characterized in that the needle shape is one of a fork shape, a cylindrical shape, a conical shape or a pyramidal shape, the solid needle electrode 22 is characterized in that the needle length is in the range of 1-4cm, and the needle point immersion depth is in the range of 0.2-1.mm. The production apparatus is qualified for the production of spinning liquid electrospining nanometer fibers having the concentration more than 25%, and the critical voltage of the production apparatus is usually not higher than 25kV, the production efficiency of the production apparatus is greater than 20g/min, the diameter of the nanometer fibers prepared by the production apparatus is in the range of 50-500nm, and the average diameter is less than 400mm.
Description
Technical field
The present invention relates to a kind of electrostatic spinning apparatus, be specially a kind of solid needle electrode electrostatic silk device.
Background technology
Nanofiber refers to that narrowly diameter is less than the following fiber of 100nm, because its diameter is superfine, make the specific area of fiber that qualitative leap occur, greatly having improved its surface can, thereby its special small-size effect, skin effect, quantum size effect, macro quanta tunnel effect etc. have been given, all show excellent specific property in properties such as physics (light, heat, electromagnetism etc.), chemistry, become the study hotspot of following 21st century.Nano-fiber for production of non-woven is with a wide range of applications at aspects such as environmental protection filtering material, nano combined reinforcing material, tissue engineering bracket, drug release carrier, photoelectric device, catalysis materials.
electrostatic spinning is one of effective technology for preparing at present nano-fiber for production of non-woven, at first this technology invented [A.FORMHALS.Process and apparatus for preparing artifical threads:USA in 1934 by American Formhals, 1975504[P] 1934.], its core is that polymer solution or the melt under the effect of high-pressure electrostatic field force produces jetting stream, " disturbing phenomenon " will occur and split into again many finer fiber threads in the dynamic analysis of spinning of spurting in air, constantly stretch and attenuate, solvent evaporates (or the melt thread is cooling) in the while thread, the fiber solidified forming, being collected device accepts, obtain nano-fiber for production of non-woven.The Static Spinning kind comprises solution Static Spinning and the large class of melting electrostatic spinning two, and wherein the solution Static Spinning simply is rapidly developed due to its equipment and technique.
Solution electrostatic spinning machine or device mainly comprise spinning head, spinning solution feed system, high-voltage generator and the large major part of fiber collecting plate four.It is spinning head that the conventional electrostatic spinning machine adopts monometallic capillary needle tubing, as Chinese patent 200420020596.3,200410025622.6,200420107832.5 etc. disclosed technology, US Patent No. 6753454, US6656394, the disclosed technology such as US6713011.
Along with electro-spinning nano fibre nonwoven is subject to the industrial quarters pay attention to day by day, traditional single needle pipe electrostatic spinning machine can't satisfy the demand of large-scale application because productive rate is lower, has become its bottleneck problem that further develops of restriction.Improve electro spinning nano fiber output and become the problem that expert, scholar jointly are concerned about and face.
on the basis of single needle electrostatic spinning device, many scholars have developed the spininess electrostatic spinning apparatus, Theron etc. arrange a plurality of metal needle tubings according to arranged in a straight line or matrix multiple spray head static spinning machine [S.A.THERON, A.L.YARIN, E.ZUSSMAN, E.KROLL.Multiple jets in electrospinning:experiment and modeling.Polymer, 2005, 46 (9): 2889-2899.], a lot of similar patents have also appearred in the world, as WO2005/0734411, WO2004/016839A1, USA6, 382, 526, USA, 6, 616, 435B2 etc.Improve although the spininess electrostatic spinning technique has had on output significantly, and the position by the reasonable Arrangement pin can reduce the problems such as phase mutual interference between spininess.But in thousands of syringe needle spinning processes, in case stopping up or the dropping liquid phenomenon appears in certain or a plurality of syringe needle, will have a strong impact on uniformity, the quality of product, and cleaning work is loaded down with trivial details, impact is produced.
2004, started the beginning of needleless electrostatic spinning technique in the swing roller electrostatic spinning technique that produces by the ELMARCO company of Czech, and applied for patent (WO2005/024101A1).The cardinal principle of this technology is the rotating metallic roll shaft (or being carved with different decorative patterns) that solution is immersed in the mounting portion in liquid storage tank, spinning solution is along with the roll shaft surface is taken in the rotation of roll shaft to, be applied with a high-pressure electrostatic in liquid storage tank or on roll shaft, spinning solution formation multiple jets on electric field force effect lower roller shaft surface, spread all over the drum length direction, thereby can obtain higher output, this equipment yield can reach 1～15g/min, fibre diameter is 100～1000nm approximately, for solid foundation has been established in the realization of goal of nanofiber suitability for industrialized production.Spraying a zone due to this spinning is on the roll shaft surface, does not use traditional capillary metal needle tubing, therefore be referred to as the needleless electrostatic spinning machine.Compare with the needle type static spinning, because its fiber jet is directed upwardly, avoided the generation of drop, and had high yield.But this needleless roller shaft type electrospinning device needs the high-pressure electrostatic higher than pin type spinning machine in spinning process, its starting resistor (voltage value when spinning solution forms taylor cone) is usually more than 40kV, its reason is that the roll shaft surface curvature is larger, electric field is not concentrated in its surface distributed, and roll shaft when rotation, its surface band liquid measure is more, therefore needs higher voltage to overcome the surface tension of spinning solution and form taylor cone; In addition, the fibre diameter of roller shaft type needle-less electro-spinning is thick than the pin type electrospinning fibre, and generally more than 300nm, what have even surpasses 1 μ m; Moreover too high voltage value can cause puncturing, leaky, and is higher to apparatus insulated requirement, the corresponding increase of spinning energy consumption.But relating to needle-less roller shaft type electrostatic spinning apparatus patent also has: Chinese patent 200410025622.6,200610036635.2,200710036447.4,200810032247.6 etc.
From the spinning technique angle, increase concentration of dope and also help to a certain extent to improve the output of electrostatic spinning nano fiber, and can reduce the solvent use amount, reduce production costs and environmental pollution.Yet spinning solution solubility is larger, and its viscosity is also larger, and the high concentration spinning solution is extruded difficulty in the capillary needle tubing, will speed up injector head and stops up, and causes difficulty in spinning in needleless roll shaft surface band hypervolia, even can't carry out electrostatic spinning.Up to now, rarely have electrostatic spinning apparatus document and the patent report that is suitable for the high concentration spinning solution.
Summary of the invention
For the deficiencies in the prior art, technical problem to be solved by this invention is that a kind of solid needle electrode electrostatic silk device is provided.This process units special design many solid needles electrode spinning device, solved well and had the problem that in obstruction, dropping liquid phenomenon and needle-less roll shaft spinning process, spinning voltage is high, fibre diameter is thick in capillary needle tubing Electrospun process now, particularly captured the electro spinning nano fiber technological difficulties of high concentration spinning solution.
The technical scheme that the present invention solves described electrostatic silk device technical problem is: design a kind of solid needle electrode electrostatic silk device, it is characterized in that comprising: liquid storage tank 1, many solid needles electrode spinning device 2, receiving system 3, HV generator 4.
Many solid needles electrode spinning device 2 that the present invention is designed is characterized in that this spinning device is comprised of metal shaft 21 and solid needle electrode 22; Described solid needle electrode 22 is characterised in that its aciculiform structure is a kind of in fork-shaped, cylindrical, conical, pyramid etc.; Described solid needle electrode 22 closely is connected with metal shaft 21.
Compare with existing electrostatic spinning device, the designed solid needle electrode electrostatic silk device of the present invention utilizes the outer watchband liquid of the needle point of solid needle electrode 22, efficiently solves existing capillary needle type static and spins the pin hole clogging; Simultaneously, less and its needle point place electric field is the most concentrated due to solid needle surface pin band liquid measure, and electric-field intensity is maximum, helps to form stable taylor cone jet, has greatly dropped to spinning voltage, and the electro spinning nano fiber that can satisfy the high concentration spinning solution prepares in batches.In addition, the spinning solution of the applicable equally low solubility of this process units.
Description of drawings
Fig. 1 is the overall structure schematic diagram of a kind of embodiment of solid needle electrode electrostatic silk device of the present invention;
Fig. 2 is the structural representation of the solid electrode spinning device of a kind of embodiment of solid needle electrode electrostatic silk device of the present invention;
Fig. 3 is fork-shaped solid needle electrode schematic diagram of the present invention;
Fig. 4 is cylindrical, massive pin electrode schematic diagram of the present invention;
Fig. 5 is the conical solid needle electrode of the present invention schematic diagram;
Fig. 6 is triangular taper solid needle electrode schematic diagram of the present invention.
The specific embodiment
Further narrate the present invention below in conjunction with embodiment and accompanying drawing thereof, but claim scope of the present invention is not subjected to the restriction of specific embodiment.
The solid needle electrode electrostatic silk device of the present invention's design (being called for short device, referring to Fig. 1,2) comprises liquid storage tank 1, and many solid needles electrode spinning device 2 is housed on liquid storage tank 1, directly over many solid needles electrode spinning device 2, receiving system 3 is installed; Described many solid needles electrode spinning device 2 is comprised of metal shaft 21 and solid needle electrode 22; Described solid needle electrode spinning device 2 is connected with the positive pole 41 of HV generator 4 by metal shaft 21; Described receiving system 3 comprises the compositions such as atresia lace curtaining 31 and ground connection pole plate 32, and the negative pole 42 of described HV generator 4 is connected with ground connection pole plate 32 in receiving system 3.
Described liquid storage tank 1 material is for surpassing molecular weight polyethylene resin, and this resin has high strength and modulus, has both simultaneously the good electrical insulating properties, organic solvent-resistant, strong acid, highly basic and splendid welding processing characteristics; Described liquid storage tank 1 has designed inlet 11 and liquid outlet 12, and in the electrospinning process, spinning solution constantly replenishes from inlet 11, and is concordant with liquid outlet 12 to guarantee the spinning liquid level, and its effect is constant in order to control in the solid needle spinning device fork-shaped needle point band liquid measure.
A kind of many solid needles electrode of special design of the present invention spinning device 2, described solid electrode spinning device 2 forms (with reference to Fig. 2) by metal shaft 21 and solid needle electrode 22; Described metal shaft can be hollow shaft, also can be solid shafting, preferentially selects hollow shaft, and the high-tension electricity that hollow shaft more helps HV generator 4 to occur is passed to solid needle electrode 22; Metal shaft 21 and solid needle electrode 22 materials can be the conducting metals such as gold, copper, iron, preferably copper.
Described solid needle electrode spinning device 2 radiuses (solid needle needle point apart from distance of shaft centers from) scope is 5～50cm, preferred 20～30cm, and spinning device 2 radiuses are larger, and spray silk area is also larger, and single needle spinning stroke is also longer, but required spinning voltage is also larger; Described solid needle electrode spinning device 2 fabric width 20～200cm, preferred 100～150cm, fabric width is larger, and output is corresponding increase also, but needs higher starting resistor and spinning voltage equally; Described solid needle electrode 22 bestock are 1～16 pin/cm
2, preferred 4～8 pins/cm
2
Described solid needle electrode 22 is characterised in that the aciculiform structure is a kind of (with reference to the Fig. 3,4,5,6) in fork-shaped, cylindrical, conical, pyramid etc., preferably selects fork configuration; Described solid needle electrode 22 is characterized in that the long 1～4cm of pin, preferred 2～3cm, the needle point immersion liquid degree of depth 0.2～1mm.The needle point immersion liquid degree of depth is darker, and bestock is larger, and the entrained spinning liquid measure of injector 2 is also more, and required spinning voltage is also just higher, but its production efficiency can slightly increase.
Described receiving system 3 comprises the compositions such as atresia lace curtaining 31 and ground connection pole plate 32, and described atresia lace curtaining 31 surfaces are coated with compact metal silver thin layer, and the coating effect is to accelerate surface charge loss in nanofiber; Described ground connection pole plate 32 ground connection.
Described HV generator is known commercially available high-voltage DC power supply, and voltage range is 0～100kV; The metal shaft 21 of the positive pole 41 of described HV generator 4 and solid needle electrode spinning device 2 be connected, negative pole 42 ground connection; Described HV generator effect is to make high-tension electricity on the surperficial spinning solution band of solid needle, and forms the high-voltage electrostatic field with ground connection pole plate 32, so that spinning solution drawing-off under the high voltage electric field effect is refined into nanofiber.
the basic functional principle of apparatus of the present invention is: spinning solution injects liquid storage tank 1 by inlet 11, solid needle electrode spinning device 2 is connected with the positive pole 41 of HV generator 4 by metal shaft 21, described solid needle electrode spinning device 2 rotates with 1～40r/min speed under external force drives, make a certain amount of spinning solution on solid needle electrode 22 needle point bands along with the rotation of spinning device 2, (15～60kV) are delivered to the drop of solid needle electrode 22 needle surfaces by metal shaft to the dc high-voltage that is produced by HV generator, and and receiving system 3 in ground connection pole plate 32 form high voltage electric fields (both, distance 10～25cm is adjustable), like this, solid needle electrode 22 needle surface drops form a large amount of taylor cones under electric field action, and then produce a large amount of fiber jets.Under the effect of high-voltage electrostatic field, after jet has experienced the processes such as acceleration, disturbance, division, constantly attenuate, and cooling or solvent evaporates moulding in air, finally the form with nanofiber is deposited on receiving system 3, formation is evenly distributed, average diameter is at 50～500nm, and fabric width is the nano-fiber for production of non-woven of 20～200cm.
Compare with existing spininess pipe electrostatic spinning machine and needleless roll-type electrostatic spinning machine, the specially designed solid needle electrode of the present invention spinning device due to drop at solid needle electrode 22 needle surfaces, can be competent at concentration up to 25% above spinning solution electro spinning nano fiber production, and its critical voltage is not usually higher than 20kV, its production efficiency can be more than 20g/min, the nanofiber diameter scope of preparation is 50～500nm, and average diameter is less than 200nm.
The present invention does not address part and is applicable to prior art.
A kind of solid needle electrode electrostatic silk device as shown in Figure 1 comprises liquid storage tank 1, many solid needles electrode spinning device 2, receiving system 3 and HV generator 4 etc.Described solid needle electrode spinning device 2 radiuses (solid needle needle point apart from distance of shaft centers from) are 5cm, and fabric width is 20cm, select fork-shaped solid needle electrode as shown in Figure 3, solid needle electrode 22 pins are long is 1cm, the prong width is 0.5mm, needle point immersion liquid degree of depth 1mm, and bestock is 6 pins/cm
2During work, polyvinyl alcohol/water spinning solution with 30% injects liquid storage tank 1 by inlet 11, excessive spinning solution flows out via outlet 12, many solid needles electrode spinning device 2 turns/rotation of min velocity of rotation with 15 under external force, opening high pressure electrostatic generator 4 after spinning device 2 slow-roll stabilizations, HV generator 4 positive electrodes 41 are connected with the metal shaft 21 of solid needle electrode spinning device 2, the high direct voltage static of output 40kV, be provided with the receiving system 3 of ground connection directly over spininess spinning device 2, the distance between setting both is 18cm; At this moment, formed a high-voltage electrostatic field between spininess spinning device 2 and receiving system 3, spinning solution on solid needle 21 needle points is producing a large amount of jetting streams under electrostatic interaction, the processes such as the acceleration of jet experience, disturbance, division, constantly attenuate, and in air cooling forming, finally be about 50～200nm with the average diameter that the form of nanofiber is deposited on the nanofiber of being produced on receiving system 3, average diameter is 100nm approximately, and productive rate is about 40g/min.This solution system starting resistor is 20kV.
A kind of solid needle electrode electrostatic silk device as shown in Figure 1 comprises liquid storage tank 1, many solid needles electrode spinning device 2, receiving system 3 and HV generator 4 etc.Described solid needle electrode spinning device 2 radiuses (solid needle needle point apart from distance of shaft centers from) are 50cm, fabric width is 200cm, selects cylindrical, massive pin electrode as shown in Figure 4, and solid needle electrode 22 pins are long is 4cm, needle point immersion liquid degree of depth 0.4mm, bestock is 16 pins/cm
2During work, polyvinylpyrrolidone with 35%/ethanol spinning solution injects liquid storage tank 1 by inlet 11, excessive spinning solution flows out via outlet 12, many solid needles electrode spinning device 2 turns/rotation of min velocity of rotation with 40 under external force, opening high pressure electrostatic generator 4 after spinning device 2 slow-roll stabilizations, HV generator 4 positive electrodes 41 are connected with the metal shaft 21 of solid needle electrode spinning device 2, the high direct voltage static of output 60kV, be provided with the receiving system 3 of ground connection directly over spininess spinning device 2, the distance between setting both is 25cm; At this moment, formed a high-voltage electrostatic field between spininess spinning device 2 and receiving system 3, spinning solution on solid needle 21 needle points is producing a large amount of jetting streams under electrostatic interaction, the processes such as the acceleration of jet experience, disturbance, division, constantly attenuate, and in air cooling forming, finally the form with nanofiber is deposited on receiving system 3.The average diameter of the nanofiber of producing is about 150～400nm, and average diameter is 230nm approximately, and productive rate is 200g/min.This solution system starting resistor is 18kV.
Embodiment 3
A kind of solid needle electrode electrostatic silk device as shown in Figure 1 comprises liquid storage tank 1, many solid needles electrode spinning device 2, receiving system 3 and HV generator 4 etc.Described solid needle electrode spinning device 2 radiuses (solid needle needle point apart from distance of shaft centers from) are 20cm, and fabric width is 100cm, select conical solid needle electrode as shown in Figure 5, and solid needle electricity 22 pins are long is 2cm, needle point immersion liquid degree of depth 0.8mm, and bestock is 5 pins/cm
2During work, polyurethane/N with 25%, the dinethylformamide spinning solution injects liquid storage tank 1 by inlet 11, excessive spinning solution flows out via outlet 12, many solid needles electrode spinning device 2 turns/rotation of min velocity of rotation with 20 under external force, opening high pressure electrostatic generator 4 after spinning device 2 slow-roll stabilizations, HV generator 4 positive electrodes 41 are connected with the metal shaft 21 of solid needle electrode spinning device 2, the high direct voltage static of output 30kV, be provided with the receiving system 3 of ground connection directly over spininess spinning device 2, the distance between setting both is 20cm; At this moment, formed a high-voltage electrostatic field between spininess spinning device 2 and receiving system 3, spinning solution on solid needle 21 needle points is producing a large amount of jetting streams under electrostatic interaction, the processes such as the acceleration of jet experience, disturbance, division, constantly attenuate, and in air cooling forming, finally the form with nanofiber is deposited on receiving system 3.The average diameter of the nanofiber of producing is about 100～200nm, and average diameter is 120nm approximately, and productive rate is 100g/min.This solution system starting resistor is 16kV.
A kind of solid needle electrode electrostatic silk device as shown in Figure 1 comprises liquid storage tank 1, many solid needles electrode spinning device 2, receiving system 3 and HV generator 4 etc.Described solid needle electrode spinning device 2 radiuses (solid needle needle point apart from distance of shaft centers from) are 20cm, and fabric width is 80cm, select conical solid needle electrode as shown in Figure 5, and solid needle electricity 22 pins are long is 3cm, and needle point immersion liquid degree of depth 0.5mm bestock is 8 pins/cm
2During work, PLA with 30%/1,2-dichloroethanes spinning solution injects liquid storage tank 1 by inlet 11, excessive spinning solution flows out via outlet 12, many solid needles electrode spinning device 2 turns/rotation of min velocity of rotation with 30 under external force, opening high pressure electrostatic generator 4 after spinning device 2 slow-roll stabilizations, HV generator 4 positive electrodes 41 are connected with the metal shaft 21 of solid needle electrode spinning device 2, the high direct voltage static of output 35kV, be provided with the receiving system 3 of ground connection directly over spininess spinning device 2, the distance between setting both is 15cm; At this moment, formed a high-voltage electrostatic field between spininess spinning device 2 and receiving system 3, spinning solution on solid needle 21 needle points is producing a large amount of jetting streams under electrostatic interaction, the processes such as the acceleration of jet experience, disturbance, division, constantly attenuate, and in air cooling forming, finally the form with nanofiber is deposited on receiving system 3.The average diameter of the nanofiber of producing is about 200～400nm, and average diameter is 240nm approximately, and productive rate is 60g/min.This solution system starting resistor is 24kV.
Embodiment 5
A kind of solid needle electrode electrostatic silk device as shown in Figure 1 comprises liquid storage tank 1, many solid needles electrode spinning device 2, receiving system 3 and HV generator 4 etc.Described solid needle electrode spinning device 2 radiuses (solid needle needle point apart from distance of shaft centers from) are 20cm, fabric width is 40cm, selects triangular taper solid needle electrode as shown in Figure 6, and solid needle electricity 22 pins are long is 1.5cm, needle point immersion liquid degree of depth 0.6mm, bestock is 3 pins/cm
2during work, polyurethane/polyacrylonitrile with 28%/N, the dinethylformamide spinning solution injects liquid storage tank 1 by inlet 11, excessive spinning solution flows out via outlet 12, many solid needles electrode spinning device 2 turns/rotation of min velocity of rotation with 24 under external force, opening high pressure electrostatic generator 4 after spinning device 2 slow-roll stabilizations, HV generator 4 positive electrodes 41 are connected with the metal shaft 21 of solid needle electrode spinning device 2, the high direct voltage static of output 35kV, be provided with the receiving system 3 of ground connection directly over spininess spinning device 2, distance between setting both is 18cm, at this moment, formed a high-voltage electrostatic field between spininess spinning device 2 and receiving system 3, spinning solution on solid needle 21 needle points is producing a large amount of jetting streams under electrostatic interaction, the processes such as the acceleration of jet experience, disturbance, division, constantly attenuate, and in air cooling forming, finally the form with nanofiber is deposited on receiving system 3.The average diameter of the nanofiber of producing is about 200～400nm, and average diameter is 310nm approximately, and productive rate is 130g/min.This solution system starting resistor is 19kV.
Embodiment 6
A kind of solid needle electrode electrostatic silk device as shown in Figure 1 comprises liquid storage tank 1, many solid needles electrode spinning device 2, receiving system 3 and HV generator 4 etc.Described solid needle electrode spinning device 2 radiuses (solid needle needle point apart from distance of shaft centers from) are 25cm, and fabric width is 120 cm, select fork-shaped solid needle electrode as shown in Figure 3, and solid needle electricity 22 pins are long is 2.5cm, and needle point immersion liquid degree of depth 0.2mm bestock is 1 pin/cm
2During work, 50% aluminium salt sol cohesion spinning solution is injected liquid storage tank 1 by inlet 11, excessive spinning solution flows out via outlet 12, many solid needles electrode spinning device 2 turns/rotation of min velocity of rotation with 1 under external force, opening high pressure electrostatic generator 4 after spinning device 2 slow-roll stabilizations, HV generator 4 positive electrodes 41 are connected with the metal shaft 21 of solid needle electrode spinning device 2, the high direct voltage static of output 45kV, be provided with the receiving system 3 of ground connection directly over spininess spinning device 2, the distance between setting both is 23cm; At this moment, formed a high-voltage electrostatic field between spininess spinning device 2 and receiving system 3, spinning solution on solid needle 21 needle points is producing a large amount of jetting streams under electrostatic interaction, the processes such as the acceleration of jet experience, disturbance, division, constantly attenuate, and in air cooling forming, finally the form with nanofiber is deposited on receiving system 3.The average diameter of the nanofiber of producing is about 300～500nm, and average diameter is 380nm approximately, and productive rate is 20g/min.This solution system starting resistor is 25kV.
Embodiment 7
A kind of solid needle electrode electrostatic silk device as shown in Figure 1 comprises liquid storage tank 1, many solid needles electrode spinning device 2, receiving system 3 and HV generator 4 etc.Described solid needle electrode spinning device 2 radiuses (solid needle needle point apart from distance of shaft centers from) are 50cm, and fabric width is 200cm, select fork-shaped solid needle electrode as shown in Figure 3, and solid needle electrode 22 pins are long is 4cm, needle point immersion liquid degree of depth 0.4mm, and bestock is 16 pins/cm
2During work, polyvinylpyrrolidone with 5%/ethanol spinning solution injects liquid storage tank 1 by inlet 11, excessive spinning solution flows out via outlet 12, many solid needles electrode spinning device 2 turns/rotation of min velocity of rotation with 50 under external force, opening high pressure electrostatic generator 4 after spinning device 2 slow-roll stabilizations, HV generator 4 positive electrodes 41 are connected with the metal shaft 21 of solid needle electrode spinning device 2, the high direct voltage static of output 40kV, be provided with the receiving system 3 of ground connection directly over spininess spinning device 2, the distance between setting both is 25cm; At this moment, formed a high-voltage electrostatic field between spininess spinning device 2 and receiving system 3, spinning solution on solid needle 21 needle points is producing a large amount of jetting streams under electrostatic interaction, the processes such as the acceleration of jet experience, disturbance, division, constantly attenuate, and in air cooling forming, finally the form with nanofiber is deposited on receiving system 3.The average diameter of the nanofiber of producing is about 50～100nm, and average diameter is 80nm approximately, and productive rate is 60g/min.This solution system starting resistor is 15kV.
Claims (2)
1. a solid needle electrode electrostatic silk device, is characterized in that comprising: liquid storage tank, many solid needles electrode spinning device, receiving system, HV generator;
Described many solid needles electrode spinning device is comprised of metal shaft and solid needle electrode, and this solid needle electrode spinning device radius is 5～50cm, and fabric width is 20～200cm, and bestock is 1～16 pin/cm
2
2. solid needle electrode electrostatic silk device according to claim 1 is characterized in that described solid needle electrode aciculiform structure is a kind of in fork-shaped, cylindrical, conical, pyramid; The long scope of described solid needle electrode needle is 1～4cm, and needle point immersion liquid depth bounds is 0.2～1mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119995A (en) * | 2016-09-02 | 2016-11-16 | 天津工业大学 | A kind of solid syringe needle electrostatic spinning apparatus |
| WO2023133286A1 (en) * | 2022-01-06 | 2023-07-13 | Ohio State Innovation Foundation | Electro-spinning methods and uses thereof |
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2012
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119995A (en) * | 2016-09-02 | 2016-11-16 | 天津工业大学 | A kind of solid syringe needle electrostatic spinning apparatus |
| CN106119995B (en) * | 2016-09-02 | 2018-04-13 | 天津工业大学 | A kind of solid syringe needle electrostatic spinning apparatus |
| WO2023133286A1 (en) * | 2022-01-06 | 2023-07-13 | Ohio State Innovation Foundation | Electro-spinning methods and uses thereof |
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