CN105088366A - Electrospinning device, method and system for manufacturing nanofibers in batch - Google Patents
Electrospinning device, method and system for manufacturing nanofibers in batch Download PDFInfo
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- CN105088366A CN105088366A CN201510467607.5A CN201510467607A CN105088366A CN 105088366 A CN105088366 A CN 105088366A CN 201510467607 A CN201510467607 A CN 201510467607A CN 105088366 A CN105088366 A CN 105088366A
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Abstract
The invention relates an electrospinning device, method and system for manufacturing nanofibers in batch. The electrospinning device comprises an air chamber, an air supply unit, a conductive collector and a power supply, wherein one surface of the air chamber is provided with a plane electrode which is provided with multiple micro pores, the air supply unit supplies air for the air chamber, the conductive collector is arranged opposite to the plane electrode and located outside the air chamber, and the two poles of the power supply are connected with the plane electrode and the conductive collector respectively. According to the electrospinning device, method and system for manufacturing the nanofibers in batch, the plane electrode with the micro pores serves as an electrode on the air chamber; by means of the distribution of the micro pores, jet flow of spinning can be more even; in the spinning process, airflow in the air chamber jets from the micro pores, spinning can be induced more easily, further stretch is conducted on the jet flow under the airflow action before deposition is conducted, and fibrous deposition in the conductive collector is more even. The electrospinning device, method and system for manufacturing the nanofibers in batch can be applied to electropinning.
Description
Technical field
The present invention relates to micro-nano technology field, particularly relate to a kind of electrostatic spinning apparatus, method and system of batch micro operations nanofiber.
Background technology
Electrostatic spinning technique has successfully realized comprising the materials such as polymer, metal, pottery and has been prepared into the electrospinning fibre of 3 nanometers to 5 micrometer ranges.Its principle is: under HV generator effect, forms high-voltage electrostatic field between spinning solution injection apparatus and nanofiber receiving system; Polymer solution accumulation and stretching by electric field force under high voltage electric field effect, distortion produces Taylor cone; When electric field force is enough large, band point drop overcomes surface tension and forms electrified jet, towards collector accelerated motion; Bend and stretch with solvent evaporates, electrified jet is stretched and attenuates, solidify to form nanofibrous structures.
In recent years, electrostatic spinning technique with it continuously, easily and fast, technique feature simple, with low cost became the mainstream technology that nanofiber manufactures gradually; The many advantages such as Electrospun nano-fibers has morphology controllable, ratio table amasss greatly, good permeability, oneself is applied widely in fields such as filtering material, protective materials, zymophore, sensor films.But traditional electrostatic spinning apparatus can only carry out one-jet spinning, and output only has 0.1 ~ 1g/h, and efficiency is very low, be difficult to the needs adapting to electrostatic spinning technique industrialization.Therefore, change spinning jetelectrode structure and realize the emphasis that the injection of many jets is current electrostatic spinning technique batch production research.At present, the method improving electrostatic spinning efficiency mainly adopts Multi needle electrostatic spinning apparatus (J.C.AlmekindersandC.Jones.Multiplejetelectrohydrodynamic sprayingandapplications [J] .J.Aerosol.Sci., 1999,17:969-971) carry out batch micro operations, thus improve nanofiber production efficiency.But the array arrangement of many spinning nozzles easily produces non-uniform electric field, between shower nozzle, phase transconductance broadcasts inhibitory effect, and the spray regime of each shower nozzle is inconsistent, is difficult to ensure that each nozzle carries out continual and steady jet injection simultaneously; Further, the electrostatic repulsion between jet too increases the unstability of jet, thus cause each shower nozzle to spray the nanofiber shape size of acquisition widely different, have impact on the quality of prepared nano-fiber film.In addition, conventional electrostatic device for spinning adopts standard injection spinning nozzle as nozzle mostly, has and is easy to the shortcoming such as blocking, cleaning difficulty, hinder its industrialization promotion.
Summary of the invention
In order to overcome above-mentioned technical problem, the object of the present invention is to provide a kind of electrostatic spinning apparatus of batch micro operations nanofiber, its spinning is even.
The technical solution adopted in the present invention is:
An electrostatic spinning apparatus for batch micro operations nanofiber, comprising:
Air chamber, a face of described air chamber is provided with plate electrode, and described plate electrode offers some micropores;
Air supply unit, to described air chamber air feed;
The conductive collector be oppositely arranged with plate electrode, described conductive collector is outside air chamber;
Power supply, the two poles of the earth of described power supply connect plate electrode and conductive collector respectively.
As a further improvement on the present invention, be also included in the scraper plate between conductive collector and plate electrode, described scraper plate has reciprocating in the plane stroke, and described plane is the plane being parallel to plate electrode.
As a further improvement on the present invention, the distance between described scraper plate and plate electrode is adjustable.
As a further improvement on the present invention, described air chamber is surrounded by the casing of plate electrode and connection plate electrode.
As a further improvement on the present invention, sealing ring is provided with between described casing and plate electrode.
As a further improvement on the present invention, described air supply unit comprises source of the gas, and described source of the gas is connected by pipeline with between air chamber.
As a further improvement on the present invention, the exit position of described source of the gas is provided with pressure regulator valve.
The present invention also discloses the spinning process of said apparatus, and its technical scheme adopted comprises the following steps:
A. spinning solution is laid on plate electrode;
B. drive solution protruding from the air-flow of micropore ejection, protruding solution produces accumulation under electric field action;
C., when accumulation is to jet concentration, protruding solution forms jet in the electric field and evaporates;
D. be deposited on conductive collector after solution evaporation and form uniform nanofiber.
As a further improvement on the present invention, use scraper plate reciprocating motion scraped finish solution surface, ensure the uniformity of sample path length.
As a further improvement on the present invention, the height adjusting scraper plate carrys out the thickness of regulator solution.
The present invention also discloses a kind of electrostatic spinning system of batch micro operations nanofiber, comprising:
Plural air chamber, unidirectional of each described air chamber is provided with plate electrode, and described plate electrode offers some micropores;
Air supply unit, to each described air chamber air feed;
The conductive collector be oppositely arranged with each plate electrode, described conductive collector is outside arbitrary air chamber;
Power supply, the two poles of the earth of described power supply connect each plate electrode and each conductive collector respectively.
The invention has the beneficial effects as follows: the present invention adopts the plate electrode of band micropore as spinning electrode on air chamber, the distribution of micropore can make the jet of spinning more even, air-flow in spinning process in air chamber sprays from micropore, make to bring out spinning easier, and jet is further stretched before deposition under airflow function, in conductive collector deposit fiber also evenly.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the present invention is further described.
Fig. 1 is the structural representation of apparatus of the present invention;
Fig. 2 is the view of air chamber of the present invention and scraper plate;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the top view of Fig. 2.
Detailed description of the invention
The electrostatic spinning apparatus of batch micro operations nanofiber as shown in Figures 1 to 4, comprises air chamber 13, air supply unit, scraper plate 7, conductive collector 11 and power supply 9.
Air chamber 13 is surrounded by casing 4 and plate electrode 6.The upper end open of casing 4, plate electrode 6 covers on described opening, and casing 4 with the joint face of plate electrode 6 arrange sealing ring 12, air tight to ensure both joint faces.
Uniformly on plate electrode 6 offer some micropores 5, these micropores 5 perpendicular to plate electrode 6 place plane and also be communicated with air chamber 13 with extraneous, when after air chamber 13 gassy, air-flow can flow out from micropore 5.
Described air supply unit is outside at air chamber 13, carries out air feed, be specifically made up of source of the gas 1, tracheae 3 and pressure regulator valve 2 air chamber 13.One end of casing 4 is provided with gas-tpe fitting 14, and gas-tpe fitting 14 and source of the gas 1 couple together by tracheae 3, is delivered in air chamber 13 by the air feed of source of the gas 1 by the gas channel 15 in gas-tpe fitting 14.Pressure regulator valve 2 is arranged on the exit position near source of the gas 1 on tracheae 3, for keeping the stable and adjustment tolerance of air-flow in air chamber 13.
Conductive collector 11 is positioned at above plate electrode 6, and is oppositely arranged with plate electrode 6.Power supply 9 is high voltage source, and its two poles of the earth are connected on plate electrode 6 and conductive collector 11 respectively by wire 8 and wire 10, therefore under the effect of high voltage source 9, form an electric field between plate electrode 6 and conductive collector 11.
The scraper plate 7 of the present embodiment is arranged on above plate electrode 6, simultaneously between conductive collector 11 and plate electrode 6.Scraper plate 7 drives (motion platform is also not shown) by motion platform, can along the in-plane reciprocating motion of plate electrode 6.Further, this motion platform can drive scraper plate 7 to move up and down simultaneously, makes the distance between scraper plate 7 and plate electrode 6 adjustable.
The method using above-mentioned electrostatic spinning apparatus to carry out electrostatic spinning is below described.
First, by not illustrated charging (feeding) equipment, spinning solution is laid on plate electrode 6; The air-flow ejected from micropore 5 in the process prevents solution to flow in air chamber 13 from micropore 5.
After scraper plate 7 sets a height, reciprocating motion under the drive of motion platform, strikes off the solution on plate electrode 6, ensure that the uniformity of sample path length on plate electrode 6 and its thickness.User can also need according to the thickness of solution the height adjusting scraper plate 7.
Be laid in the solution on plate electrode 6 afterwards, can be protruding under the air-flow sprayed from micropore 5 drives, protruding solution can produce accumulation under electric field action, and when accumulation is to finite concentration, protruding solution can break through surface tension, form jet in the electric field, jet electric field and the air-flow that ejects from micropore 5 is dual draw effect, stretch further and splitting, under the drive of air-flow, evaporation is faster, finally on conductive collector 11, is deposited as uniform nanofiber.
The method and apparatus of embodiment compared with prior art also has following advantage:
1., due to mustn't syringe needle be adopted in device, can avoid interfering the fiber laydown caused uneven because many shower nozzles pin spins the electric field brought;
2. be with the plate electrode of micropore as spinning electrode, air-flow auxiliary under, make to bring out spinning easier, the distribution of micropore makes the jet of spinning more even;
3. jet before deposition micropore jet injection airflow function under further stretched, make deposit fiber evenly;
4. adopt scraper to go to strike off solution, make the thickness of solution controlled and evenly, the quality of fiber had greatly improved.
5. the spinning technique in embodiment and device is more succinct, efficient, for convenience detach and cleaning.
In addition, with single casing 4 and single supporting plate electrode 6 integrally, these entire combination two or more can use by user, adopt air supply unit to its difference air feed, and use one or more conductive collector depositing nanofibers, thus can weave in the spinning process of nanofiber in enormous quantities, can not interfering with each other of electric field be subject to and affect the uniformity of fiber.
The above is the preferred embodiment of the present invention, and it does not form limiting the scope of the invention.
Claims (11)
1. an electrostatic spinning apparatus for batch micro operations nanofiber, is characterized in that, comprising:
Air chamber, a face of described air chamber is provided with plate electrode, and described plate electrode offers some micropores;
Air supply unit, to described air chamber air feed;
The conductive collector be oppositely arranged with plate electrode, described conductive collector is outside air chamber;
Power supply, the two poles of the earth of described power supply connect plate electrode and conductive collector respectively.
2. the electrostatic spinning apparatus of batch micro operations nanofiber according to claim 1, it is characterized in that: be also included in the scraper plate between conductive collector and plate electrode, described scraper plate has reciprocating in the plane stroke, and described plane is the plane being parallel to plate electrode.
3. the electrostatic spinning apparatus of batch micro operations nanofiber according to claim 2, is characterized in that: the distance between described scraper plate and plate electrode is adjustable.
4. the electrostatic spinning apparatus of the batch micro operations nanofiber according to claim 1 or 2 or 3, is characterized in that: described air chamber is surrounded by the casing of plate electrode and connection plate electrode.
5. the electrostatic spinning apparatus of batch micro operations nanofiber according to claim 4, is characterized in that: be provided with sealing ring between described casing and plate electrode.
6. the electrostatic spinning apparatus of the batch micro operations nanofiber according to claim 1 or 2 or 3, it is characterized in that: described air supply unit comprises source of the gas, described source of the gas is connected by pipeline with between air chamber.
7. the electrostatic spinning apparatus of batch micro operations nanofiber according to claim 6, is characterized in that: the exit position of described source of the gas is provided with pressure regulator valve.
8. an electrospinning process for batch micro operations nanofiber, is characterized in that, uses the device according to any one of claim 1 to 7, comprises the following steps:
A. spinning solution is laid on plate electrode;
B. drive solution protruding from the air-flow of micropore ejection, protruding solution produces accumulation under electric field action;
C., when accumulation is to jet concentration, protruding solution forms jet in the electric field and evaporates;
D. be deposited on conductive collector after solution evaporation and form uniform nanofiber.
9. the electrospinning process of batch micro operations nanofiber according to claim 8, is characterized in that: use scraper plate reciprocating motion scraped finish solution surface, ensure the uniformity of sample path length.
10. the electrospinning process of batch micro operations nanofiber according to claim 9, is characterized in that: the height of adjustment scraper plate carrys out the thickness of regulator solution.
The electrostatic spinning system of 11. 1 kinds of batch micro operations nanofibers, is characterized in that, comprising:
Plural air chamber, unidirectional of each described air chamber is provided with plate electrode, and described plate electrode offers some micropores;
Air supply unit, to each described air chamber air feed;
The conductive collector be oppositely arranged with each plate electrode, described conductive collector is outside arbitrary air chamber;
Power supply, the two poles of the earth of described power supply connect each plate electrode and conductive collector respectively.
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| CN201510467607.5A CN105088366B (en) | 2015-07-31 | 2015-07-31 | A kind of electrostatic spinning apparatus of batch micro operations nanofiber, method and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107142618A (en) * | 2017-07-19 | 2017-09-08 | 盐城工业职业技术学院 | The preparation facilities and system of nano fibrous membrane |
| KR101954223B1 (en) * | 2018-09-12 | 2019-03-05 | 한국화학연구원 | Flat type melt-electro spinning apparatus for mass production of Nano-fiber and the method of Solvent-free Melt-electro spinning |
| WO2019047768A1 (en) * | 2017-09-05 | 2019-03-14 | 4C Air, Inc. | Nozzle plate for fiber formation |
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| CN203583025U (en) * | 2013-12-05 | 2014-05-07 | 厦门大学 | Electrostatic spinning device |
| CN204982155U (en) * | 2015-07-31 | 2016-01-20 | 佛山轻子精密测控技术有限公司 | Batch manufacture nanofiber's electrostatic spinning device and system |
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| US20100084791A1 (en) * | 2008-10-08 | 2010-04-08 | Xingtao Wu | Methods of manufacturing fibers |
| CN101775706A (en) * | 2010-03-03 | 2010-07-14 | 天津工业大学 | Production method of micro nanometer fiber non-woven fabric and device |
| CN102703997A (en) * | 2012-06-21 | 2012-10-03 | 中原工学院 | Multi-nozzle closed type jet electrostatic spinning device for preparing nanofibers |
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| CN107142618A (en) * | 2017-07-19 | 2017-09-08 | 盐城工业职业技术学院 | The preparation facilities and system of nano fibrous membrane |
| WO2019047768A1 (en) * | 2017-09-05 | 2019-03-14 | 4C Air, Inc. | Nozzle plate for fiber formation |
| US11274380B2 (en) | 2017-09-05 | 2022-03-15 | 4C Air, Inc. | Nozzle plate for fiber formation |
| KR101954223B1 (en) * | 2018-09-12 | 2019-03-05 | 한국화학연구원 | Flat type melt-electro spinning apparatus for mass production of Nano-fiber and the method of Solvent-free Melt-electro spinning |
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| CN105088366B (en) | 2018-04-20 |
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Effective date of registration: 20181210 Address after: 528000 Room 103, 71 Lihe Science and Technology Industry Center, 33 South Information Avenue, Shishan Town, Nanhai District, Foshan City, Guangdong Province Patentee after: FOSHAN QINGZI PRECISION MEASUREMENT AND CONTROL TECHNOLOGY Co.,Ltd. Address before: 510006 Dongfeng East Road, Yuexiu District, Guangzhou, Guangdong 729 Patentee before: Guangdong University of Technology |
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Effective date of registration: 20230406 Address after: Room 101, No. 196 Keji East Road, Shijie Town, Dongguan City, Guangdong Province, 523290 Patentee after: DONGGUAN AG-FILTER MANUFACTURING CO.,LTD. Address before: 528000 Room 103, 71 Lihe Science and Technology Industry Center, 33 South Information Avenue, Shishan Town, Nanhai District, Foshan City, Guangdong Province Patentee before: FOSHAN QINGZI PRECISION MEASUREMENT AND CONTROL TECHNOLOGY Co.,Ltd. |