CN103147138B - A kind of electrospinning direct-writing jet printing appts strengthening focusing function by double-deck gas - Google Patents
A kind of electrospinning direct-writing jet printing appts strengthening focusing function by double-deck gas Download PDFInfo
- Publication number
- CN103147138B CN103147138B CN201310074204.5A CN201310074204A CN103147138B CN 103147138 B CN103147138 B CN 103147138B CN 201310074204 A CN201310074204 A CN 201310074204A CN 103147138 B CN103147138 B CN 103147138B
- Authority
- CN
- China
- Prior art keywords
- gas nozzle
- internal layer
- air inlet
- fluid injector
- jet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001523 electrospinning Methods 0.000 title claims abstract description 22
- 238000007639 printing Methods 0.000 title claims abstract description 22
- 238000005728 strengthening Methods 0.000 title claims description 6
- 239000012530 fluid Substances 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 230000000694 effects Effects 0.000 abstract description 10
- 239000007921 spray Substances 0.000 description 15
- 239000000243 solution Substances 0.000 description 12
- 230000005684 electric field Effects 0.000 description 7
- 239000002086 nanomaterial Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000009987 spinning Methods 0.000 description 5
- 230000008602 contraction Effects 0.000 description 4
- 239000002121 nanofiber Substances 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010041 electrostatic spinning Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000008154 viscoelastic solution Substances 0.000 description 2
- 229920001410 Microfiber Polymers 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000368 destabilizing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 1
- 230000008844 regulatory mechanism Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Abstract
Strengthen an electrospinning direct-writing jet printing appts for focusing function by double-deck gas, relate to electrospinning direct-writing jet printing appts.If ejecting device, feeder, solution tank, liquid feed device, high voltage source and collecting board, cartridge nozzle installs outer gas nozzle, internal layer gas nozzle and fluid injector, 3 nozzles all establish coaxial center through hole, fluid injector is located in the central through hole of internal layer gas nozzle, internal layer gas nozzle is located in the central through hole of outer gas nozzle, outer gas nozzle establishes air inlet, internal layer gas nozzle establishes air inlet, fluid injector establishes inlet opening, the air inlet of internal layer gas nozzle is connected with feeder, the air inlet of outer gas nozzle is connected with feeder, solution tank is located on liquid feed device, solution tank is communicated with fluid injector through feed pipe, high-voltage power cathode connects the inlet opening of fluid injector, high voltage source negative pole connects collecting board, collecting board is positioned at immediately below ejecting device.Strong constraint jet can be added, maintain jet jetting stability, improve focusing effect.
Description
Technical field
The present invention relates to electrospinning direct-writing jet printing appts, especially relate to a kind of electrospinning direct-writing jet printing appts strengthening focusing function by double-deck gas.
Background technology
The electrospinning direct-writing be coupled based on electric liquid utilizes External Electrical Field in viscoelastic solution, and under the effect of electric field force, viscoelastic solution distortion obtains taylor cone; When electric field force continuation enhancing exceedes solution surface tension, just there is jet from the injection of taylor cone point; Stability line jet is utilized to carry out the orderly spray printing preparation of micro-nano structure.Electrospinning direct-writing overcomes traditional electrical liquid and to be coupled electric liquid coupling jet printing process jet spiral, bending unsteady motion, and what utilize stability line jet to carry out orderly micro-nano structure directly writes preparation.Directly write jet and carry electric charge from the injection of taylor cone point, the dynamic instability of whip will be produced by Charge repulsion, the effect of non-uniform electric field power, thus have impact on the positioning precision of directly writing micro-nano structure.
Sheaths gas focusing is that jet spray printing controls the new development trend of research, and starts to obtain application.Fusion gas focusing and electric liquid coupling spray printing have become a kind of new paragon of electrified jet spray printing, have attracted the extensive concern of researcher.As ([1] Wang B. such as B.Wang, Yao Y., Peng J., Lin Y., Liu W., Luo Y., Xiang R., Li R., Wu D.Preparationof poly (ester imide) ultrafine fibers by gas ?jet/electrospinning [J] .Journal ofApplied Polymer Science, 2009, 114 (2): 883-891) with ([2] the Liu W. such as W.L.Liu, YaoY., Lin Y., Wang B., Luo Y., Li N., Zhang Q., Wu Y., Niu A.Electrospinning assistedby gas jet for preparing ultrafine poly (vinyl alcohol) fibres [J] .Iranian PolymerJournal, 2009, 18 (1): 89-96) sheaths focused gas is applied to solution electrostatic spinning and has prepared uniform PVA by place seminar respectively, the very thin nanofiber of PEI, sheaths focused gas should effect in melt electrostatic spinning more obvious, ([3] the Zhmayev E. such as E.Zhmayev, Cho D., Joo Y.L.Nanofibers from gas-assisted polymer meltelectrospinning [J] .Polymer, 2010,51 (18): 4140-4144.) research find focused gas melt electrostatic spinning nanofiber diameter can be made to reduce 20 times; A.M.
deng ([4]
a.M., Lopez-Herrera J.M., Riesco-Chueca P.The combination of electrospray and flowfocusing [J] .Journal of Fluid Mechanics, 2006,566:421-445; [5]
a.M., Ferrera C., Montanero J.M.Universal size and shape of viscous capillary jets:application to gas-focused microjets [J] .Journal of Fluid Mechanics, 2011,670:427-438; [6] Li F.,
a.M., L ó pez-Herrera J.M.Absolute-convectiveinstability transition of low permittivity, low conductivity charged viscous liquidjets under axial electric fields [J] .Physics of Fluids, 2011,23:094108) confirm that sheaths focused gas has to electric liquid coupling electron spray the effect reducing micro-nano liquid-drop diameter, improve uniformity and spray printing efficiency by experiment with theoretical research.
Electrospinning direct-writing technology introduces gas focusing, is in the relative velocity reducing jet printing process spinning jet and space medium around gas of laminar condition, promotes the stability of jet motion under mainly utilizing Near Field; The introducing of sheath gas simultaneously, the basis of electric field force has superposed the tensile force of gas flowfield, reduce the applying voltage magnitude maintained required for jet injection, decrease the interference of jet destabilizing factor, for the accurate spray printing of jet controls to provide a kind of new technological approaches.
And carry out jet regulatory mechanism, micro-nano structure spray printing locating verification experimental study, explore jet wobble amplitude, spray printing micro-nano structure size, positioning precision, overcome and directly write critical speed required for helical structure and gas flow rate, apply voltage, ejecting device all needs the suitable ejecting device of a combination property to carry out experimental study to the relationship schedule etc. of the technological parameters such as collecting board distance, a kind of designing and developing of electrospinning direct-writing jet printing appts by gas reinforcement focusing function is made to become a study hotspot, as Chinese patent ZL200710009595.7, ZL201210037687.7 proposes different gas focusing electrospinning spray printing structures, but ejecting device all adopts monofocal gas channel described in these patents, be unfavorable for the regulating and controlling effect of gas to taylor cone and jet course of injection, all parts is still independent dispersion, need in use procedure to carry out dismounting frequently to all parts, adjustment, be not easy to the simplification of ejecting device and integrated manipulation.
Summary of the invention
The object of the present invention is to provide and can add strong constraint jet, maintenance jet jetting stability, improve a kind of electrospinning direct-writing jet printing appts strengthening focusing function by double-deck gas of focusing effect.
The present invention is provided with ejecting device, feeder, solution tank, liquid feed device, high voltage source and collecting board;
Described ejecting device is provided with outer gas nozzle, internal layer gas nozzle and fluid injector, outer gas nozzle, internal layer gas nozzle and fluid injector are provided with coaxial center through hole, fluid injector is located in the central through hole of internal layer gas nozzle, internal layer gas nozzle is located in the central through hole of outer gas nozzle, outer gas nozzle is provided with air inlet, internal layer gas nozzle is provided with air inlet, fluid injector is provided with inlet opening, the air inlet of internal layer gas nozzle is connected with feeder, the air inlet of outer gas nozzle is connected with feeder, solution tank is located on liquid feed device, solution tank is communicated with fluid injector by feed pipe, high-voltage power cathode connects the inlet opening of fluid injector, high voltage source negative pole connects collecting board and ground connection, collecting board is positioned at immediately below ejecting device.
Described liquid feed device can adopt the syringe pump of prior art, and as U.S.'s product, model is Harvard-11Pico Plus.
The air inlet of described outer gas nozzle is preferably radial air inlet mouth, and the air inlet of described internal layer gas nozzle is preferably radial air inlet mouth, and the inlet opening of described fluid injector is preferably radial inlet opening.
Described feeder preferably adopts 2 air compressor machines, and 2 air compressor machine gas outlets are equipped with pressure regulator valve, and 2 air compressor machine gas outlets are communicated with the air inlet of outer gas nozzle with the air inlet of internal layer gas nozzle respectively.
Compared with the prior art, operation principle of the present invention and beneficial effect as follows:
When the present invention uses, by regulating the feeding rate of liquid feed device, the feed speed of fluid injector solution can be controlled; The voltage being applied to fluid injector is controlled by high voltage source; The air pressure of outer gas nozzle and internal layer gas nozzle is applied to by the adjustable feeder of pressure regulator valve.
The present invention, by regulating and controlling the admission pressure of inside and outside layer gas nozzle, makes inner layer ring be ejected in surrounding air around gas uniform, and being ejected into surrounding air by outer gas can strengthen focusing function, significantly promotes the stability of liquid jet motion.Reach the unsteady motion utilizing steady air flow to retrain electrospinning direct-writing jet, utilize the effect of contraction of sheaths gas to improve the object of jet stability.Internal layer gas can form stable laminar flow structure around spinning jet, outer gas can add strong-focusing effect of contraction, reduce the relative velocity of jet and surrounding medium, suppress the generation of jet unsteady motion, the positioning precision of stability that jet sprays and electrospinning direct-writing micro-nano structure deposition can be significantly improved.Meanwhile, sheaths air-flow has stretching action to spinning jet, reduces starting resistor required for electrospinning direct-writing and sprays ME for maintenance, decreasing high voltage, interference that large charge density causes improves the stability that jet sprays; And the stretching of slightly layer air-flow accelerates the refinement of jet, improves ejection efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Detailed description of the invention
See Fig. 1, the embodiment of the present invention comprises the air compressor machine of liquid feed device, solution tank, ejecting device, high voltage source 6, feeder 7(2 platform independent) and collecting board 9.
Ejecting device is provided with outer gas nozzle 3, internal layer gas nozzle 4 and fluid injector 5; Outer gas nozzle 3, internal layer gas nozzle 4 and fluid injector 5 are provided with coaxial center through hole, and fluid injector 5 is located in the central through hole of internal layer gas nozzle 4, and internal layer gas nozzle 4 is located in the central through hole of outer gas nozzle 3.Outer gas nozzle 3 is provided with radial air inlet mouth, and internal layer gas nozzle 4 is provided with radial air inlet mouth, and fluid injector 5 is provided with radial inlet opening.Liquid feed device 1 adopts precise injection pump, and solution tank 2 is located on liquid feed device 1, and the outlet of solution tank 2 is communicated with the radial inlet opening of fluid injector 5 by feed pipe.The air inlet of internal layer gas nozzle 4 is connected with 1 air compressor machine 7, and the air inlet of outer gas nozzle 3 is connected with another air compressor machine 7, and 2 air compressor machine 7 gas outlets are equipped with pressure regulator valve 8.High-tension electricity .6 positive pole connects the inlet opening of fluid injector 5, and high voltage source 6 negative pole connects collecting board 9 and ground connection, and collecting board 9 is positioned at immediately below ejecting device.
When the present embodiment uses, in solution tank 2, loading Electrospun solution, by regulating the feeding rate of liquid feed device 1, the feed speed of fluid injector 5 solution can be controlled; The voltage being applied to fluid injector 5 is controlled by high voltage source 6; The air pressure of outer gas nozzle 3 and internal layer gas nozzle 4 is applied to by the adjustable feeder of pressure regulator valve 8 of 2 air compressor machines 7.The drop that ejecting device hangs, under the acting in conjunction of high voltage electric field and air-flow, is pullled tapered, ejects ultra-fine jet fast from cone point.The liquid stream sprayed is quick solvent flashing after collecting board is collected, and finally on collecting board, forms uniform nanofiber.Inner layer ring can be ejected in surrounding air around gas equably, and being ejected into surrounding air by outer gas can strengthen focusing function, significantly can promote the stability of liquid jet motion.Reach the unsteady motion utilizing steady air flow to retrain electrospinning direct-writing jet, utilize the effect of contraction of sheaths gas to improve the object of jet stability.Internal layer gas can form stable laminar flow structure around spinning jet, and outer gas can add strong-focusing effect of contraction, reduces the relative velocity of jet and surrounding medium, suppresses the generation of jet unsteady motion.Meanwhile, sheaths air-flow has stretching action to spinning jet, reduces starting resistor required for electrospinning direct-writing and sprays ME for maintenance, decreasing high voltage, interference that large charge density causes improves the stability that jet sprays; And the stretching of slightly layer air-flow accelerates the refinement of jet, improves ejection efficiency.
Claims (3)
1. strengthen an electrospinning direct-writing jet printing appts for focusing function by double-deck gas, it is characterized in that being provided with ejecting device, feeder, solution tank, liquid feed device, high voltage source and collecting board;
Ejecting device is provided with outer gas nozzle, internal layer gas nozzle and fluid injector, outer gas nozzle, internal layer gas nozzle and fluid injector are provided with coaxial center through hole, fluid injector is located in the central through hole of internal layer gas nozzle, internal layer gas nozzle is located in the central through hole of outer gas nozzle, outer gas nozzle is provided with air inlet, internal layer gas nozzle is provided with air inlet, fluid injector is provided with inlet opening, the air inlet of internal layer gas nozzle is connected with feeder, the air inlet of outer gas nozzle is connected with feeder, solution tank is located on liquid feed device, solution tank is communicated with fluid injector by feed pipe, high-voltage power cathode connects the inlet opening of fluid injector, high voltage source negative pole connects collecting board and ground connection, collecting board is positioned at immediately below ejecting device.
2. a kind of electrospinning direct-writing jet printing appts strengthening focusing function by double-deck gas as claimed in claim 1, it is characterized in that the air inlet of described outer gas nozzle is radial air inlet mouth, the air inlet of described internal layer gas nozzle is radial air inlet mouth, and the inlet opening of described fluid injector is radial inlet opening.
3. a kind of electrospinning direct-writing jet printing appts strengthening focusing function by double-deck gas as claimed in claim 1, it is characterized in that described feeder adopts 2 air compressor machines, 2 air compressor machine gas outlets are equipped with pressure regulator valve, and 2 air compressor machine gas outlets are communicated with the air inlet of outer gas nozzle with the air inlet of internal layer gas nozzle respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310074204.5A CN103147138B (en) | 2013-03-08 | 2013-03-08 | A kind of electrospinning direct-writing jet printing appts strengthening focusing function by double-deck gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310074204.5A CN103147138B (en) | 2013-03-08 | 2013-03-08 | A kind of electrospinning direct-writing jet printing appts strengthening focusing function by double-deck gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103147138A CN103147138A (en) | 2013-06-12 |
| CN103147138B true CN103147138B (en) | 2015-11-04 |
Family
ID=48545440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310074204.5A Expired - Fee Related CN103147138B (en) | 2013-03-08 | 2013-03-08 | A kind of electrospinning direct-writing jet printing appts strengthening focusing function by double-deck gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103147138B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352261B (en) * | 2013-07-24 | 2016-02-03 | 苏州大学 | Sandwich-type electrostatic spinning nozzle and prepare the method for regenerated silk nano fibre yarn |
| CN103484952B (en) * | 2013-10-17 | 2016-05-04 | 厦门大学 | Sheath layer gas can focus on electrospinning direct-writing nozzle device by heated type |
| CN103628150B (en) * | 2013-12-05 | 2015-09-09 | 厦门大学 | A kind of multiple injector electrostatic spinning device |
| CN103924308A (en) * | 2014-05-03 | 2014-07-16 | 北京化工大学 | Solution differential electrostatic spinning device assisted by internal and external high-speed airflow |
| CN105887216A (en) * | 2014-07-03 | 2016-08-24 | 福建省贝思达环保投资有限公司 | High-density electrostatic spinning conductor sprayer |
| CN106890736B (en) * | 2017-03-14 | 2019-01-25 | 中国计量大学 | A kind of viscoelastic fluid drop generating device of size tunable |
| CN108950700A (en) * | 2017-05-19 | 2018-12-07 | 南京理工大学 | A kind of electrostatic spinning apparatus and method preparing fluffy state nanofiber |
| CN110029402B (en) * | 2019-04-17 | 2021-02-05 | 中国科学院长春应用化学研究所 | Microfluidic spinning device and method |
| CN109837598A (en) * | 2019-04-17 | 2019-06-04 | 中国科学院长春应用化学研究所 | A kind of micro-fluidic device for spinning and method |
| CN110219062B (en) * | 2019-06-26 | 2021-09-03 | 广东工业大学 | Centrifugal electrostatic spinning equipment and gas-assisted filament discharge system thereof |
| CN111389472B (en) * | 2020-03-23 | 2021-08-17 | 南京工业职业技术学院 | Device and method for preparing electrospinning direct-writing multilayer microfluidic chip |
| CN112874165B (en) * | 2020-11-25 | 2022-01-07 | 华中科技大学 | Plasma microbeam coaxial electric polarization induction electric spray printing device and spray printing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4963298A (en) * | 1989-02-01 | 1990-10-16 | E. I. Du Pont De Nemours And Company | Process for preparing fiber, rovings and mats from lyotropic liquid crystalline polymers |
| US5098636A (en) * | 1989-08-18 | 1992-03-24 | Reifenhauser Gmbh & Co. Maschinenfabrik | Method of producing plastic fibers or filaments, preferably in conjunction with the formation of nonwoven fabric |
| CN101126179A (en) * | 2007-09-25 | 2008-02-20 | 江西师范大学 | High-speed air-blowing static spinning composite preparation method and device for ultra-fine polymer fibre |
| CN102534822A (en) * | 2012-02-18 | 2012-07-04 | 上海工程技术大学 | Device and method for preparing polysulfonamide nanometer fiber nets by means of airflow-electrostatic combination |
| CN102803585A (en) * | 2010-02-15 | 2012-11-28 | 康奈尔大学 | Electrospinning apparatus and nanofibers produced therefrom |
-
2013
- 2013-03-08 CN CN201310074204.5A patent/CN103147138B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4963298A (en) * | 1989-02-01 | 1990-10-16 | E. I. Du Pont De Nemours And Company | Process for preparing fiber, rovings and mats from lyotropic liquid crystalline polymers |
| US5098636A (en) * | 1989-08-18 | 1992-03-24 | Reifenhauser Gmbh & Co. Maschinenfabrik | Method of producing plastic fibers or filaments, preferably in conjunction with the formation of nonwoven fabric |
| CN101126179A (en) * | 2007-09-25 | 2008-02-20 | 江西师范大学 | High-speed air-blowing static spinning composite preparation method and device for ultra-fine polymer fibre |
| CN102803585A (en) * | 2010-02-15 | 2012-11-28 | 康奈尔大学 | Electrospinning apparatus and nanofibers produced therefrom |
| CN102534822A (en) * | 2012-02-18 | 2012-07-04 | 上海工程技术大学 | Device and method for preparing polysulfonamide nanometer fiber nets by means of airflow-electrostatic combination |
Non-Patent Citations (1)
| Title |
|---|
| 静电纺丝法和气流-静电纺丝法制备聚砜纳米纤维;姚永毅等;《高分子学报》;20051031(第5期);687-691 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103147138A (en) | 2013-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103147138B (en) | A kind of electrospinning direct-writing jet printing appts strengthening focusing function by double-deck gas | |
| CN103170416B (en) | A kind of static nozzle and using method thereof | |
| CN103014885B (en) | A kind of electrospinning direct-writing nozzle device of integrated stable sheath layer gas confined focusing function | |
| CN103484952B (en) | Sheath layer gas can focus on electrospinning direct-writing nozzle device by heated type | |
| CN103898622B (en) | A kind of cleaning method of electrostatic spinning apparatus and electrostatic spinning nozzle thereof | |
| CN103628150B (en) | A kind of multiple injector electrostatic spinning device | |
| CN103668486A (en) | Outer conical surface type electrostatic spinning sprayer assisted by airflow | |
| CN102275386B (en) | Coaxial jet head for electro-hydrodynamic jet printing and application thereof | |
| CN103409819B (en) | A kind of near-field airflow electrospinning direct-writing device | |
| CN103846171B (en) | A kind of electrostatic atomizer | |
| CN102978719B (en) | Vacuum electro-spinning device | |
| CN203782282U (en) | Electrostatic spinning device | |
| CN207484022U (en) | A kind of device for preparing mixed type micro-nano composite cellulosic membrane | |
| CN203360646U (en) | Fusion electrostatic spinning nozzle device | |
| CN103422180A (en) | Spray tube electrospinning head | |
| CN108385173A (en) | The electrostatic spinning nozzle and its spinning process of liquid surface curvature and electric field separates control | |
| CN103060932A (en) | Drum electrostatic spinning device | |
| CN202595356U (en) | Novel electrostatic spinning nozzle | |
| CN103194805A (en) | Claw multi-nozzle electrospinning jet device with auxiliary air flow | |
| CN101886294B (en) | Electrostatic spinning device with non-solution contact electrode | |
| CN203564616U (en) | Airflow guide type orientation and in-situ electrostatic spraying device | |
| CN107201559A (en) | A kind of pearl head nozzle electrospinning device | |
| CN204982156U (en) | Portable hand -held type spinning equipment | |
| CN103361746A (en) | Molten electrostatic spinning device | |
| KR101263591B1 (en) | Cone-Jet Mode Electrostatic Spray Deposition Apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |