CN102191569B - Parallel-electric-field electrostatic spinner - Google Patents
Parallel-electric-field electrostatic spinner Download PDFInfo
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- CN102191569B CN102191569B CN 201010125111 CN201010125111A CN102191569B CN 102191569 B CN102191569 B CN 102191569B CN 201010125111 CN201010125111 CN 201010125111 CN 201010125111 A CN201010125111 A CN 201010125111A CN 102191569 B CN102191569 B CN 102191569B
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- parallel
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- receiving system
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Abstract
The invention discloses a parallel-electric-field electrostatic spinner, belonging to the field of electrostatic spinning. The parallel-electric-field electrostatic spinner comprises a receiver, a nozzle, a sprayer, parallel plates, a heating coil, a charging barrel, a piston shaft, an end cover, screws, a temperature sensor and a high-voltage static generator, wherein the shape of the parallel plates is identical to that of the receiver, and the parallel plates are parallel to the receiver. By using the parallel-electric-field electrostatic spinner, a uniform electric field can be formed in the spinning region, so that the dithering degree of the spun fibers in the electric field is lowered, and the falling trajectory of the spun fibers is more stable.
Description
Technical field
The present invention relates to a kind of electrostatic spinning apparatus, belong to the electrostatic spinning field.
Background technology
Along with the intensification of nanometer technology, electrospinning process can be prepared nano level fiber and becomes one of current study hotspot due to it.Electrospinning process has been acknowledged as the simplest effective method of preparation nanofiber, and existing 30 multiple polymers successfully make superfine fibre by the method at present, and minimum diameter reaches tens nanometers.About the result of study of electrostatic spinning, pertinent literature all is exponent increase over the years.
The principle of electrostatic spinning forms electric field between the two by applying high voltage between shower nozzle and receiving system, making exactly, and polarized melt or solution are ejected on dash receiver under the electric field force effect, form ultra-fine fiber.But present existing electrostatic spinning apparatus, its electric field form is all to adopt the very little nozzle of relative area or capillary and the very large receiving system of relative area to form, the uniformity of this electric field and systematicness are all not good enough, therefore make the suffered electric field force of spun silk uneven, it is moving that random whip occurs in dropping process, the fiber path poor controllability, thus the difficulty of orderly reception is strengthened.
Summary of the invention
A kind of parallel-electric-field electrostatic spinner that the present invention proposes, it is realized with the on all four parallel-plate of receiving system shape by add one on nozzle, thereby effectively adjust the spinning electric field, uniformity and the regularity of electric field are significantly improved, make spun fiber be subject to more uniform electric field force, thereby the whip that effectively reduces spinning fibre is moving, makes the whereabouts track of spinning fibre more stable.
The invention provides a kind of electrostatic spinning apparatus that can produce parallel electric field, it mainly comprises receiving system, nozzle, shower nozzle, parallel-plate, heating collar, barrel, the axis of the piston, end cap, screw, temperature sensor and HV generator; Wherein, the shape of parallel-plate and receiving system is identical, and during installation, both are parallel relatively, and producing uniform electric field, the shape of parallel-plate and receiving system can be circular, square, triangle and polygon arbitrarily; The positive pole of receiving system and high voltage source joins, parallel-plate ground connection; Parallel-plate adopts four with barrel and is connected at circumferential equally distributed screw, and both also can directly adopt and be threaded; Nozzle and shower nozzle adopt cone match; Nozzle directly is connected with barrel by screw thread, also can connect by circumferential equally distributed screw; The axis of the piston can move up and down in barrel and can not produce Lou material; The axis of the piston adopts with end cap and is threaded, and also can be processed into one.
The present invention is suitable for the electrostatic spinning of polymer melt or solution, and spinning material can be polymer particles pellet or powder or section or melt or solution.Receiving system can be taked various ways such as conducting plate and conductive mesh.The output of HV generator is very anodal.
Description of drawings
Fig. 1 is the schematic diagram of a kind of parallel-electric-field electrostatic spinner of the present invention
In figure: 1-receiving system 2-parallel-plate 3-heating collar 4-barrel 5-the axis of the piston 6-end cap 7-temperature sensor 8-nozzle 9-screw 10-shower nozzle 11-HV generator
The specific embodiment
the present invention, a kind of electrostatic spinning apparatus that can produce parallel electric field, take device schematic diagram as shown in Figure 1, it mainly comprises receiving system 1, can produce high-tension HV generator 11 and the parallel installation of receiving system 1, size, the on all four parallel utmost point 2 of shape, the screw 9 that connects parallel-plate 2 and barrel 4, take the shower nozzle 10 of cone match with nozzle 8, with barrel 4 take to be threaded can be for convenience detach nozzle 8, the heating collar 3 that is used for heating material, the barrel 4 of steel construction, can move up and down and can not produce the Lou the axis of the piston 5 of material in barrel 4, end cap 6, temperature sensor 7.
Spinning step: at first, by heating collar 3, barrel 7 is heated to preset temperature.Add spinning material toward 7 li of barrels after reaching temperature, by the time material melting, during melt droplets that shower nozzle 10 occurs being about to come off, the power switch of opening high pressure electrostatic generator 11, the output voltage of power supply is since 0 toward raising, till the melt droplets of shower nozzle 10 ends is out of shape and is ejected filament.The melt silk is cooling in motion process, is pooled on receiving system 1.The melt thread that ejects, the stretching through electric field can form ultra-fine fiber at last.
In the present invention, other spinning conditions are constant, and the size that only changes dash receiver and parallel-plate compares experiment.When both sizes were the square plate of 100mm * 100mm, the spinning path was more regular than traditional point-to-area receive mode, still, still a small amount of skew can occur; When receiving system and parallel-plate size were 150mm * 150mm, still there was skew in the spinning path, illustrates between the two to form regular especially electric field; When both sizes being become 200mm * 200mm, can observe in spinning zone fiber vertical drop.Therefore explanation, the shape of receiving system and parallel-plate is in full accord, can effectively improve the electric field regularity; Experiment is found when the long size of square edges of boards 〉=200mm, and the interference of other metal objects around just substantially can ignoring forms regular electric field in the spinning zone, makes the fiber descent path vertically even, reduces the difficulty of reception in order.Apply that the object around the spinning field can be conductive material after parallel-plate, can not produce obviously parallel electric field and disturb.
One embodiment of the present of invention: spinning material is polypropylene granules, and spinning temperature is set to 230 ℃.Spinning voltage is 0～80kv, and receiving system 1 and parallel-plate 2 are conductive mesh, and both sizes are the square plate of 200mm * 200mm, shower nozzle 10 bottom melts outlets and receiving system 1 apart from 20cm.Fiber vertically falls, and the path is stable.
Claims (3)
1. a parallel-electric-field electrostatic spinner, is characterized in that: mainly comprise receiving system (1), nozzle (8), shower nozzle (10), parallel-plate (2), heating collar (3), barrel (4), the axis of the piston (5), end cap (6), screw (9), temperature sensor (7) and HV generator (11); Wherein, parallel-plate (2) is identical with the shape of receiving system (1), and both are parallel relatively; Receiving system (1) joins with the positive pole of HV generator (11), parallel-plate (2) ground connection; Parallel-plate (2) adopts screw (9) to be connected with barrel (4); Nozzle (8) adopts cone match with shower nozzle (10); Nozzle (8) is connected with barrel (4) by screw thread; The axis of the piston (5) can move up and down in barrel (4); The axis of the piston (5) is connected with end cap (6).
2. a kind of parallel-electric-field electrostatic spinner according to claim 1, is characterized in that, receiving system (1) is conducting plate or conductive mesh.
3. a kind of parallel-electric-field electrostatic spinner according to claim 1, is characterized in that, the shape of parallel-plate (2) and receiving system (1) can be circular or square or triangle or polygon arbitrarily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010125111 CN102191569B (en) | 2010-03-16 | 2010-03-16 | Parallel-electric-field electrostatic spinner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010125111 CN102191569B (en) | 2010-03-16 | 2010-03-16 | Parallel-electric-field electrostatic spinner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102191569A CN102191569A (en) | 2011-09-21 |
| CN102191569B true CN102191569B (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010125111 Expired - Fee Related CN102191569B (en) | 2010-03-16 | 2010-03-16 | Parallel-electric-field electrostatic spinner |
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| CN (1) | CN102191569B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103668482B (en) * | 2013-10-12 | 2016-11-23 | 东华大学 | Many jet flow static electricities spinning nozzle that a kind of electric field is uniform |
| CN103789874B (en) * | 2014-01-23 | 2016-02-10 | 北京化工大学常州先进材料研究院 | Parallel electric field induction phase separation method prepares nucleocapsid structure natural polyelectrolyte nanofiber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5024789A (en) * | 1988-10-13 | 1991-06-18 | Ethicon, Inc. | Method and apparatus for manufacturing electrostatically spun structure |
| CN101429681A (en) * | 2007-11-07 | 2009-05-13 | 北京化工大学 | Magnetic field aided polymer melt electrostatic spinning device |
| CN201367496Y (en) * | 2009-02-25 | 2009-12-23 | 北京化工大学 | Device for producing composite fiber by utilizing melt electrostatic spinning |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6641773B2 (en) * | 2001-01-10 | 2003-11-04 | The United States Of America As Represented By The Secretary Of The Army | Electro spinning of submicron diameter polymer filaments |
| WO2009156822A1 (en) * | 2008-06-24 | 2009-12-30 | Stellenbosch University | Method and apparatus for the production of fine fibres |
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2010
- 2010-03-16 CN CN 201010125111 patent/CN102191569B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5024789A (en) * | 1988-10-13 | 1991-06-18 | Ethicon, Inc. | Method and apparatus for manufacturing electrostatically spun structure |
| CN101429681A (en) * | 2007-11-07 | 2009-05-13 | 北京化工大学 | Magnetic field aided polymer melt electrostatic spinning device |
| CN201367496Y (en) * | 2009-02-25 | 2009-12-23 | 北京化工大学 | Device for producing composite fiber by utilizing melt electrostatic spinning |
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| CN102191569A (en) | 2011-09-21 |
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Granted publication date: 20130605 Termination date: 20160316 |