CN101429681A - Magnetic field aided polymer melt electrostatic spinning device - Google Patents
Magnetic field aided polymer melt electrostatic spinning device Download PDFInfo
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- CN101429681A CN101429681A CNA2007101769158A CN200710176915A CN101429681A CN 101429681 A CN101429681 A CN 101429681A CN A2007101769158 A CNA2007101769158 A CN A2007101769158A CN 200710176915 A CN200710176915 A CN 200710176915A CN 101429681 A CN101429681 A CN 101429681A
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Abstract
The invention discloses an electrostatic spinning device for polymer melt assisted by magnetic field. The device mainly comprises a receiving device, a magnetic field device, a capillary tube, a nozzle, an electrical heating ring, a charging barrel with a steel structure, a piston shaft, a pressurizing device, an end closure, a temperature sensor, a temperature control device and a high voltage electrostatic generator, wherein the magnetic field device is arranged between the capillary tube and the receiving device and can generate magnetic field parallel to the direction of an electric field; the capillary tube is in conical fit with the nozzle; the nozzle is connected with the charging barrel; the electrical heating ring is used for heating the polymer melt; the piston shaft can move up and down in the charging barrel and prevent leaking; and the end closure is loaded with the pressurizing device. The device can be used in electrostatic spinning of the polymer melt, and solves a series of problems of solvent electrostatic spinning caused by using solvent, and problems that the nozzle is easy to block in solvent electrostatic spinning, thereby having the advantages of economy, environmental protection, safety, high production rate and easy realization of industrialization.
Description
Technical field
The present invention relates to a kind of electrostatic spinning apparatus, particularly be suitable for the electrostatic spinning apparatus of polymer melt.
Background technology
Electrostatic spinning claims electrospinning again, is found to the existing now history in 100 years nearly from it.Just in patent, reported the high-voltage electrostatic field spinning as far back as Anton Fomhals in 1934, yet up to 1993, this technology just was defined as electrostatic spinning technique.In the last few years, along with the intensification of nanosecond science and technology, electrostatic spinning technique had become one of current the most popular research field.At present existing 30 multiple polymers successfully make ultra-fine fiber by the method for electrostatic spinning, and the thinnest fibre diameter can reach tens nanometers.The principle of electrostatic spinning can be sketched and be, at high-pressure electrostatic after the match, polymer solution or melt are under the effect of electric field force, form thread from capillary end and fly to receiving system, thread produces drawing of height and stretches before arriving receiving system, the solvent evaporation or the melt of solution solidify, and form ultra-fine fiber at last on receiving system.The research about electrostatic spinning at present all concentrates on the solution electrostatic spinning mostly, for the research of the electrostatic spinning of polymer melt then seldom.Domestic electrostatic spinning patent at polymer melt does not also have at present.
Though the electrostatic spinning based on solution can spin thin fiber to tens nanometers, it is owing to using solvent a series of problem to occur: the recovery problem of (1) solvent.Because it generally all is poisonous being used for the solvent of solution electrostatic spinning, so must reclaim.Difficult solvent recovery is to hinder one of industrialized reason of solution electrostatic spinning.(2) be applied to the safety problem of biomedicine field.Owing on fiber, have residual solvent, thereby safe problem will occur when it is applied to biomedicine field.(3) some polymer such as polypropylene and polyethylene at room temperature can not find the appropriate solvent wiring solution-forming.This is one of limitation of solution electrostatic spinning.(4) evaporation of solvent causes fiber surface rough, even defective occurs.This can have influence on electrospun fibers strengthens the field at fibrous composite application.(5) yield poorly 0.01g/min.The solution solvent that is used for electrostatic spinning accounts for very big proportion, generally all more than 90%.The electrostatic spinning process accounts for the most solvent of solution and all evaporated, thereby output is extremely low.This also is that the solution electrostatic spinning is difficult to one of industrialized reason.6) use of Ang Gui solvent can increase cost.Also there is a very serious problem in the solution electrostatic spinning, the as easy as rolling off a log obstruction of spinneret orifice.This also is that the solution electrostatic spinning one of can not continuous mass-produced reason.
Summary of the invention
The purpose of this invention is to provide the auxiliary device that is applicable to polymer melt electrostatic spinning in a kind of magnetic field.The present invention not be owing to need just can carry out spinning smoothly by solvent, thereby can solve a series of problems that the solution electrostatic spinning occurs owing to the use solvent.In the present invention, capillary is in spinning process in the environment of high temperature always, phenomenon of blocking can not occur, thereby can realize a large amount of production continuously.The electrostatic spinning apparatus that is used for melt that the present invention proposes has been owing to solved above problem, thus compare with the solution electrostatic spinning have more economical, more environmental protection, safer, productivity ratio is high, is easy to realize industrialized advantage.
The technical scheme of the polymer melt electrostatic spinning device that a kind of magnetic field provided by the invention is auxiliary has adopted the electrostatic spinning apparatus of being made up of receiving system (1), magnetic field device (2), capillary (3), nozzle (4), screw (5), heating collar (6), barrel (7), the axis of the piston (8), pressue device (9), end cap (10), temperature sensor (11), attemperating unit (12), HV generator (13) etc.Receiving system (1) is positioned under the capillary (3), and receiving system (1) connects the cathode output end of HV generator (13), another electrode grounding of HV generator (13).Magnetic field device (2) is staggeredly placed on same plane along an angle by two pairs of N utmost point S utmost points permanent magnet vis-a-vis and forms, and magnetic field device forms the approximate uniform magnetic field of direction that is parallel to electric field between capillary and receiving system.Capillary (3) and nozzle (4) are taked cone match, and capillary is by drawing lead and the earth joins.Nozzle (4) is connected at the uniform screw of circumferencial direction (5) by 4 with barrel (7), and nozzle (4) also can directly wait other connected mode or be processed into one with barrel (7) by being threaded.The Electrothermal ring (6) that is used for heated polymerizable thing melt is coated on barrel (7) surface, and the power supply terminal of heating collar (6) is received on the attemperating unit (12) by lead.Temperature sensor (11) adopts with barrel (7) and is threaded, and the terminals of temperature sensor (11) are received on the attemperating unit (12) by lead.End cap (10) and the axis of the piston (8) adopt screw thread etc. to be connected, or both are processed into one.The axis of the piston (8) can pump in barrel (7).Pressue device (9) is placed on directly over the end cap (10).
The present invention is suitable for the electrostatic spinning of polymer melt, thermoplastic such as polymer can polyethylene, polypropylene, polyamide, and spinning material can be polymer particles pellet or powder or section or melt.Receiving system can be taked various ways such as conducting plate, conductive mesh, reel etc.Permanent magnet in the magnetic field device also can replace with hot-wire coil.Conductive materials such as capillary employing metal are made, and its internal diameter is less than 1mm.Micro-propeller can be realized or adopt to pressue device by the mode that adds counterweight.The output of HV generator (13) is very anodal.
The polymer melt electrostatic spinning device that a kind of magnetic field provided by the invention is auxiliary, in spinning is crossed kind by the effect in magnetic field, make spray thread can appearance swing by a larger margin in the swing district, thereby can spin thinner fiber.Concrete principle as shown in Figure 2, F1 is an electric field force, F2 is a Lorentz force, F3 is the drag of top fiber to the lower part fiber.In spinning process, when unstable oscillation appears in injection stream, component motion will be had, thereby the effect of Lorentz force can be subjected to perpendicular to magnetic field, at F1, F2 under the acting in conjunction of F3, sprays thread and can the mode with screw line move in the space.Because Lorentz force is directly proportional with magnetic induction intensity,, just can increases the amplitude of injection stream swing, thereby can spin ultra-fine fiber as long as strengthen magnetic induction intensity.
Description of drawings
Fig. 1 device schematic diagram of the present invention
Fig. 2 sprays the stressed schematic diagram of thread under the effect of magnetic field
The complete section figure of Fig. 3 nozzle
The specific embodiment
The polymer melt electrostatic spinning device that a kind of magnetic field that the present invention takes is auxiliary, device schematic diagram as shown in Figure 1, it mainly comprises receiving system (1), between capillary (3) and receiving system (1), can produce the magnetic field device (2) that is parallel to direction of an electric field magnetic field, take the capillary (3) of cone match with nozzle (4), with barrel (7) take screw (5) be connected can be for convenience detach nozzle (4), the heating collar (6) that is used for heated polymerizable thing melt, the barrel of steel construction (7), can in barrel (7), move up and down and can not produce the Lou the axis of the piston (8) of material, pressue device (9), the end cap (10) of carrying pressue device (9), temperature sensor (11), attemperating unit (12), the HV generator (13) that output is very anodal.The melt outlet of capillary (3) and the distance of receiving system (1) are greater than 2cm.
Spinning step: at first barrel (7) is heated to preset temperature.The melt temperature of various polymer is all different, because polymer viscosity is the key factor whether electrostatic spinning can carry out smoothly, so need be arranged on the heating-up temperature of heating collar (6) more than the processing and forming temperature of polymer, reduce the viscosity of polymer as far as possible, decompose but be unlikely to make polymer to produce.Secondly in barrel, add spinning material; spinning material can be polymer beads or powder or section or melt; after raw material reaches design temperature, exert pressure on end cap (10), applied pressure should make capillary (3) end melt droplets occur but can't come off being advisable again.Open the power switch of HV generator (13) at last again, the output voltage of power supply forms till the filament until the melt droplets of capillary end is out of shape and is ejected since 0 past the rise.When passing through magnetic field space between the range of instability of injection stream, will move in the mode of screw line, the melt silk cools off in motion process, is pooled to receiving system.Melt thread from capillary ejects through the stretching of electric field and the stretching in magnetic field, can form ultra-fine fiber at last.
Owing to do not use solvent, there is not the Evaporation Phenomenon of solvent in fiber by the present invention spins out, thereby can obtains the uniform superfine fibre of smooth surface, and its mechanical property is better than the fiber that solution electrostatic spinning makes.Raw material 90% is a solvent all in the solution electrostatic spinning, evaporate in spinning process, and melt spinning process raw material can generate silk.
One embodiment of the present of invention: spinning material low density polyethylene (LDPE) particulate material, 280 ℃ of spinning temperatures, capillary inner diameter 0.6mm.In addition, spinning voltage is 0～30kv, and receive mode is a conductive mesh, and magnetic induction intensity is 0.08 tesla, melt capillaceous outlet and receiving system apart from 15cm.According to above-mentioned technical process, the fibre diameter of collecting is in 1 μ m～50 mu m ranges.
Claims (7)
1. the auxiliary polymer melt electrostatic spinning device in a magnetic field, it is mainly by receiving system (1), between capillary (3) and receiving system (1), can produce the magnetic field device (2) that is parallel to direction of an electric field magnetic field, take the capillary (3) of cone match with nozzle (4), the nozzle (4) of taking screw (5) to be connected with barrel (7), wrap in barrel (7) outside and be used for the heating collar (6) of heated polymerizable thing melt, the barrel of steel construction (7), can in barrel (7), move up and down and can not produce the Lou the axis of the piston (8) of material, pressue device (9), the end cap (10) of carrying pressue device (9), temperature sensor (11), the HV generator compositions such as (13) that attemperating unit (12), output are very anodal, the melt outlet of capillary (3) and the distance of receiving system (1) are greater than 2cm.
2. the polymer melt electrostatic spinning device that a kind of magnetic field according to claim 1 is auxiliary is characterized in that spinning material is polymer particles pellet or powder or section or melt.
3. the polymer melt electrostatic spinning device that a kind of magnetic field according to claim 1 is auxiliary is characterized in that receiving system (1) can be conducting plate, conductive mesh, reel etc.
4. the polymer melt electrostatic spinning device that a kind of magnetic field according to claim 1 is auxiliary, it is characterized in that, magnetic field device (2) applies a magnetic field parallel with direction of an electric field between capillary (3) and receiving system (1), it can be made up of permanent magnet or hot-wire coil etc.
5. the polymer melt electrostatic spinning device that a kind of magnetic field according to claim 1 is auxiliary is characterized in that, conductive materials such as capillary (3) employing metal are made, and its internal diameter is less than 1mm.
6. the polymer melt electrostatic spinning device that a kind of magnetic field according to claim 1 is auxiliary is characterized in that micro-propeller can be realized or adopt to pressue device (9) by the mode that adds counterweight.
7. the polymer melt electrostatic spinning device that a kind of magnetic field according to claim 1 is auxiliary is characterized in that, the output of HV generator (13) is very anodal, capillary (3) ground connection, and receiving system (1) connects the positive pole of HV generator (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2007101769158A CN101429681B (en) | 2007-11-07 | 2007-11-07 | Magnetic field aided polymer melt electrostatic spinning device |
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| CN2007101769158A CN101429681B (en) | 2007-11-07 | 2007-11-07 | Magnetic field aided polymer melt electrostatic spinning device |
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| CN101429681A true CN101429681A (en) | 2009-05-13 |
| CN101429681B CN101429681B (en) | 2010-08-18 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102080272A (en) * | 2010-12-17 | 2011-06-01 | 中国科学院长春应用化学研究所 | Preparation method of adhesive material |
| CN102191568A (en) * | 2010-03-16 | 2011-09-21 | 北京化工大学 | Device for promoting electrostatic spinning of high-viscosity polymer melt by using rod-climbing effect |
| CN102191569A (en) * | 2010-03-16 | 2011-09-21 | 北京化工大学 | Parallel-electric-field electrostatic spinner |
| CN102418156A (en) * | 2011-09-20 | 2012-04-18 | 中国科学院过程工程研究所 | Device for preparing nano-scale spiral filaments by electrostatic spinning method, and method |
| CN103556238A (en) * | 2013-11-22 | 2014-02-05 | 苏州大学张家港工业技术研究院 | Electrostatic spinning device capable of adjusting viscosity of polymer solution |
| CN103320876B (en) * | 2013-06-24 | 2015-09-23 | 江南大学 | A kind of electrostatic spinning linear nozzle |
| CN105696091A (en) * | 2015-12-30 | 2016-06-22 | 北京化工大学 | A flow controlled type reciprocating circling melt electrostatic spinning machine |
| CN105734695A (en) * | 2016-04-20 | 2016-07-06 | 青岛科技大学 | Melt electrostatic spinning preparation method of nano inorganic salt fibers |
| CN107268093A (en) * | 2017-07-24 | 2017-10-20 | 燕山大学 | A kind of electrospinning device with spinning solution temperature control unit |
| CN107988633A (en) * | 2017-12-26 | 2018-05-04 | 蒋秋菊 | A kind of fiber fabrication setup and technique |
| CN109913959A (en) * | 2019-04-11 | 2019-06-21 | 上海工程技术大学 | Melt electrostatic spinning method and its product based on reverse enhancing compound field |
| CN111065766A (en) * | 2017-06-23 | 2020-04-24 | 阿维塔斯有限公司 | Hot melt electrostatic spinning |
| CN113308756A (en) * | 2021-07-01 | 2021-08-27 | 扬州锦辉化纤有限公司 | Superfine porous chinlon 6 fiber and preparation method thereof |
Family Cites Families (4)
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| JP4448946B2 (en) * | 2004-05-20 | 2010-04-14 | 国立大学法人山梨大学 | A method for producing vinyl-based conductive polymer fibers, and a vinyl-based conductive polymer fiber obtained by the method. |
| US7326043B2 (en) * | 2004-06-29 | 2008-02-05 | Cornell Research Foundation, Inc. | Apparatus and method for elevated temperature electrospinning |
| CN2856070Y (en) * | 2005-12-20 | 2007-01-10 | 东华大学 | Electrostatic spinning equipment with magnetic controller |
| CN100572619C (en) * | 2006-12-30 | 2009-12-23 | 国家纳米科学中心 | A kind of apparatus and method that prepare regular arranged macromolecular nano-fibre |
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2007
- 2007-11-07 CN CN2007101769158A patent/CN101429681B/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102191568A (en) * | 2010-03-16 | 2011-09-21 | 北京化工大学 | Device for promoting electrostatic spinning of high-viscosity polymer melt by using rod-climbing effect |
| CN102191569A (en) * | 2010-03-16 | 2011-09-21 | 北京化工大学 | Parallel-electric-field electrostatic spinner |
| CN102191569B (en) * | 2010-03-16 | 2013-06-05 | 北京化工大学 | Parallel-electric-field electrostatic spinner |
| CN102080272A (en) * | 2010-12-17 | 2011-06-01 | 中国科学院长春应用化学研究所 | Preparation method of adhesive material |
| CN102080272B (en) * | 2010-12-17 | 2012-05-23 | 中国科学院长春应用化学研究所 | Preparation method of adhesive material |
| CN102418156A (en) * | 2011-09-20 | 2012-04-18 | 中国科学院过程工程研究所 | Device for preparing nano-scale spiral filaments by electrostatic spinning method, and method |
| CN102418156B (en) * | 2011-09-20 | 2013-10-16 | 中国科学院过程工程研究所 | Device for preparing nano-scale spiral filaments by electrostatic spinning method, and method |
| CN103320876B (en) * | 2013-06-24 | 2015-09-23 | 江南大学 | A kind of electrostatic spinning linear nozzle |
| CN103556238A (en) * | 2013-11-22 | 2014-02-05 | 苏州大学张家港工业技术研究院 | Electrostatic spinning device capable of adjusting viscosity of polymer solution |
| CN103556238B (en) * | 2013-11-22 | 2016-08-17 | 苏州大学张家港工业技术研究院 | The electrostatic spinning apparatus of adjustable polymer solution viscosity |
| CN105696091A (en) * | 2015-12-30 | 2016-06-22 | 北京化工大学 | A flow controlled type reciprocating circling melt electrostatic spinning machine |
| CN105734695A (en) * | 2016-04-20 | 2016-07-06 | 青岛科技大学 | Melt electrostatic spinning preparation method of nano inorganic salt fibers |
| CN105734695B (en) * | 2016-04-20 | 2018-03-09 | 青岛科技大学 | A kind of nano inorganic salt fibers melt electrostatic spinning preparation method |
| CN111065766A (en) * | 2017-06-23 | 2020-04-24 | 阿维塔斯有限公司 | Hot melt electrostatic spinning |
| CN107268093A (en) * | 2017-07-24 | 2017-10-20 | 燕山大学 | A kind of electrospinning device with spinning solution temperature control unit |
| CN107988633A (en) * | 2017-12-26 | 2018-05-04 | 蒋秋菊 | A kind of fiber fabrication setup and technique |
| CN107988633B (en) * | 2017-12-26 | 2020-08-07 | 普宁鑫盛印刷包装有限公司 | Fiber manufacturing device and process |
| CN109913959A (en) * | 2019-04-11 | 2019-06-21 | 上海工程技术大学 | Melt electrostatic spinning method and its product based on reverse enhancing compound field |
| CN113308756A (en) * | 2021-07-01 | 2021-08-27 | 扬州锦辉化纤有限公司 | Superfine porous chinlon 6 fiber and preparation method thereof |
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| CN101429681B (en) | 2010-08-18 |
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