WO2012028117A1 - Dispositif pour produire des nanofibres - Google Patents

Dispositif pour produire des nanofibres Download PDF

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Publication number
WO2012028117A1
WO2012028117A1 PCT/CZ2011/000069 CZ2011000069W WO2012028117A1 WO 2012028117 A1 WO2012028117 A1 WO 2012028117A1 CZ 2011000069 W CZ2011000069 W CZ 2011000069W WO 2012028117 A1 WO2012028117 A1 WO 2012028117A1
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WO
WIPO (PCT)
Prior art keywords
spinning
electrodes
electrode
nanofibres
collecting
Prior art date
Application number
PCT/CZ2011/000069
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English (en)
Inventor
Libor Samek
Original Assignee
Elmarco S.R.O.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Elmarco S.R.O. filed Critical Elmarco S.R.O.
Publication of WO2012028117A1 publication Critical patent/WO2012028117A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
    • D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin

Definitions

  • the invention relates to a device for production of nanofibres through electrostatic spinning of polymer matrix in an electric field induced between a collecting electrode and a spinning electrode of elongated shape or a spinning electrode comprising spinning elements of elongated shape.
  • two basic types of spinning electrodes are used.
  • the first of them are static spinning electrodes formed of a nozzle or a system of nozzles known for example from WO 03080905 or WO 2005/090653, the second one are then rotating spinning electrodes formed either of full body rotating around its longitudinal axis known for example from EP 1673493 or WO 2007/111477, or of a body rotating around its longitudinal axis, which comprises spinning elements in the shape of a cord known for example from WO 2008028428 or CZ PV 2009-525.
  • the rotating spinning electrodes because in comparison with the static spinning electrodes, at their usage substantially higher and more constant performance of electrostatic spinning is achieved, and these electrodes are simultaneously, thanks to their more simple structure, less expensive, both from the point of view of acquisition cost as well as operational costs.
  • the goal of the invention is to propose a device for spinning of polymer matrix with rotating spinning electrode, which would utilise greater portion of potential of this electrode, and also would achieve higher output at lower number of spinning electrodes, without inadequately increasing the built-in surface, or causing other technical problems for example as to guiding the mean for deposition of nanofibres, etc.
  • the goal of the invention is achieved by a device for production of nanofibres through electrostatic spinning of polymer matrix in an electric field created between a collecting electrode and a spinning electrode of elongated shape or a spinning electrode comprising spinning elements of elongated shape, whose principle consists in that, this device comprises at least two spinning electrodes of elongated shape or at least two spinning electrodes comprising spinning elements of elongated shape arranged under each other, while to each of them a collecting electrode is assigned from both sides and in the same distance from it.
  • this arrangement there occurs simultaneous electrostatic spinning of polymer matrix between the spinning electrode and at least two to it assigned collecting electrodes.
  • the collecting electrodes assigned to one spinning electrode are on both of its sides positioned against each other.
  • one collecting electrode may be on one side simultaneously assigned to two or more spinning electrodes arranged one under another.
  • the collecting electrodes are planar ones, nevertheless in further variants also other types of collecting electrodes may be used, e.g. cylindrical collecting electrodes.
  • the spinning electrodes in askew manner one under another, this for example due to spatial or other reasons.
  • the longitudinal axes of spinning electrodes arranged under each other are laying in a common centre plane.
  • the mean for deposition of nanofibres guided between each spinning electrode and each to it assigned collecting electrode is running parallel with the centre plane.
  • the device according to the invention for suitable motion of air supplied into the spinning chamber it is advantageous, if at least one planar collecting electrode is permeable for air. It is also advantageous if the mean for deposition of nanofibres is also permeable for air.
  • FIG. 1 represents a cross-section of spinning chamber of the device according to the invention with two cylindrical spinning electrodes rotating around their longitudinal axis
  • the Fig. 2 a cross-section of spinning chamber of the device according to the invention with four cylindrical spinning electrodes rotating around their longitudinal axis
  • the Fig. 3 a cross- section of spinning chamber of the device according to the invention with four cylindrical spinning electrodes rotating around their longitudinal axis and with different manner of guiding the mean for deposition of nanofibres than in variant shown in the Fig. 2
  • the Fig. 4 a cross-section of spinning chamber of the device according to the invention with twelve cylindrical spinning electrodes rotating around their longitudinal axis
  • the Fig. 1 represents a cross-section of spinning chamber of the device according to the invention with two cylindrical spinning electrodes rotating around their longitudinal axis
  • the Fig. 2 a cross-section of spinning chamber of the device according to the invention with four cylindrical spinning electrodes rotating around their longitudinal axis
  • the Fig. 3 a cross- section of spinning chamber of the device
  • FIG. 5 a cross-section of spinning chamber of the device according to the invention with eleven cylindrical spinning electrodes rotating around their longitudinal axis
  • the Fig. 6 a cross-section of spinning chamber of the device according to the invention with two cylindrical spinning electrodes rotating around their longitudinal axis, which are mutually arranged differently than in variant shown in the Fig. 1. Examples of embodiment
  • the Fig. 1 represents a cross-section of spinning chamber 1 of the simplest variant of the device for production of nanofibres according to the invention.
  • this spinning chamber ⁇ one under another are rotatably around their longitudinal axis 21 , resp. 221 arranged two cylindrical spinning electrodes 2 and 22, each of them extending by lower portion of its circumference into a liquid polymer matrix 3 contained in to it assigned reservoir 4 or 44.
  • the reservoirs 4 and 44 are at the same time mutually interconnected and are connected with not represented source of polymer matrix 3 positioned outside the spinning chamber ⁇ .
  • Both spinning electrodes 2 and 22 are coupled with common not represented drive for rotating motion in direction of arrow A1 or A2 and in conducting manner connected with one pole of source 5 of high direct voltage.
  • the drive of the spinning electrodes 2 and 22 as well as the source 5 of high direct voltage are positioned outside the spinning chamber 1_.
  • the worms 4J. and 441 of each pair are simultaneously coupled with not represented drive, which is positioned outside the spinning chamber 1, while in some variants of embodiment it may be the same drive, with which the spinning electrodes 2 and 22 are coupled.
  • a separating crossbar 50 of electrically non-conducting material for example plastic is arranged for separating their electric fields..
  • plastic is arranged for separating their electric fields.
  • the collecting electrodes 6 and 66 are permeable for air, which enables motion of the air designated for drying of produced nanofibres and/or for removal of vapours of solvent in the spinning chamber 1.
  • the collecting electrodes 6 and 66 are formed of regular electrically conducting grid.
  • each of the collecting electrodes 6 and 66 there is along whole its length in vertical manner by means of system of rotating guiding rollers 7, out of which at least one is coupled with a drive positioned outside the spinning chamber ⁇ , moveably in direction of arrow B1 or B2, an endless belt 8 or 88 guided.
  • the endless belts 8 and 88 serve as means for deposition of produced nanofibres and their subsequent transport into the required section of the spinning chamber 1, while their width is preferably identical or greater than the width of spinning electrode 2 and 22. Sections of both endless belts 8 and 88 are guided between the respective collecting electrode 6 and 66 and both spinning electrodes 2 and 22 parallel with centre plane D1 and in the same distance from it.
  • both endless belts 8 and 88 are at the same time permeable for air and are made of electrically non-conducting material, to which the produced nanofibres have low adhesion, or have such surface layer or surface finish.
  • the endless belts 8 and 88 are formed of regular grid of glass fibres covered with layer of PTFE or similar material.
  • the same not represented drive as for the spinning electrodes 2 and 22 may be used.
  • a device for detaching the nanofibres is assigned to each of the endless belts 8 and 88 in the lower section of the spinning chamber 1 .
  • this is formed of cylindrical brush 9 or 99 rotating around its longitudinal axis, which is coupled with not represented drive positioned outside the spinning chamber ⁇ , and of a slot 10 or 100 connected with not represented source of under pressure.
  • the cylindrical brush 9 or 99 is rotatable around its longitudinal axis in direction (arrow C1 or C2) opposite to direction in which the respective endless belt 8 or 88 is moving.
  • the nanofibres or fragments of planar layer of nanofibres removed by brushes 9 and 99 from endless belts 8 and 88 are due to under pressure sucked into the respective slot 10 or 100 and by means of not represented duct delivered outside the spinning chamber ⁇ for further use.
  • the same drive as for the spinning electrodes 2 and 22 may be used for propulsion of brushes 9 and 99.
  • both spinning electrodes 2 and 22 are rotating in the same speed and in the same direction around their longitudinal axis 21 or 221 , while on their surface they carry out polymer matrix 3 from the reservoir 4 or 44 into electric field between the corresponding spinning electrode 2, 22 and both collecting electrodes 6 and 66.
  • This electric field then through its action of force creates on surface of layer of polymer matrix 3 on the spinning electrodes 2 and 22 so called Taylor cones, from which the individual nanofibres are subsequently elongated.
  • Taylor cones from which the individual nanofibres are subsequently elongated.
  • Air streams brought into the spinning chamber 1 direct at the same time the motion of nanofibres to centre section of endless belts 8 and 88. Through this they eliminate their possible undesired transit around the endless belts 8 and 88 and deposition on surface of collecting electrode 6, 66 or of other element in the spinning chamber ⁇ . Next to this, these streams of air support removal of excessive solvent from nanofibres, and thus their drying and solidification.
  • both collecting electrodes 6 and 66 are mutually parallel and their distance from spinning electrodes 2 and 22 is identical, the nanofibres created from layer of polymer matrix 3 on each spinning electrode 2 and 22 are gradually carried towards both collecting electrodes 6 and 66, so that they are caught on both endless belts 8 and 88. Nevertheless the rate of nanofibres caught on individual endless belts 8 and 88 may vary depending on quantity and properties of polymer matrix 3 carried out on surface of the spinning electrodes 2 and 22.
  • Layer of nanofibres deposited on endless belt 8 or 88 is subsequently brought into contact with the device for detaching the nanofibres, where it is by means of mechanical effect of cylindrical brush 9 or 99 taken out and transformed into plurality of irregular fragments. These are immediately sucked into the slot 10 or 100 and delivered outside the spinning chamber 1 through not represented duct for further use.
  • Fig. 2 represents a cross-section of another variant of the spinning chamber ⁇ of the device for production of nanofibres according to this invention.
  • double number of cylindrical spinning electrodes 2, 22, 20, 220 than in the variant represented in the Fig. 1 is arranged, while next to the pair of spinning electrodes 2 and 22 mounted each under another a second identical pair of spinning electrodes 20, 220 is mounted.
  • All spinning electrodes 2, 22, 20 and 220 are coupled with not represented common drive for rotation motion in direction of arrows A1, A2, A11 and A22, and are connected with one pole of source 5 of high direct voltage.
  • the drive is, as well as the source 5 of high direct voltage, positioned outside the spinning chamber 1_.
  • Each of the spinning electrodes 2, 22, 20 and 220 extends by lower portion of its circumference into the polymer matrix 3 contained in to it assigned reservoir 4, 44, 40, 440 with pair of rotating and mutually counter-directing worms 41 , 441 , 401 and 4401.
  • Each two of under another arranged reservoirs 4 and 44, 40 and 440 are mutually interconnected and all reservoirs 4, 44, 40, 440 are connected with not represented source of polymer matrix 3 positioned outside the spinning chamber ⁇ .
  • the separating crossbar 50, resp. 501 of electrically non-conducting material e.g. plastic is arranged.
  • the periphery sections of separating crossbars 50 and 501 are from the side adjacent to the lower spinning electrode 22 or 220 rounded, by which is their intervention into electric fields and into the production process of nanofibres reduced to minimum.
  • two planar collecting electrodes 6 and 66, or 666 and 6666 are assigned, which are parallel with centre plane D1 , resp. D2 passing through the longitudinal axis 21 and 221 , or 201 and 2201 of the spinning electrodes 2 and 22, or 20 and 220 of the respective pair, and they are arranged on both sides in the same distance from it.
  • the collecting electrodes 6, 66, 666 and 6666 are preferably formed of regular electrically conducting grid, which is grounded.
  • each of the collecting electrodes 6, 66, 666 and 6666 there is in a vertical manner along its entire length by means of system of rotating guiding rollers 7, out of which at least one is coupled with a drive positioned outside the spinning chamber 1, moveably in direction of arrow B1 , B2, or B22, the endless belt 8, 88 or 888 guided, which serves as substrate for deposition of nanofibres.
  • the endless belt 8, 88 or 888 guided, which serves as substrate for deposition of nanofibres created in electric fields of both pairs of one under another arranged spinning electrodes 2 and 22, 20 and 220.
  • the endless belts 8, 88 and 888 are preferably permeable for air and they are made of electrically non-conducting material, to which the nanofibres being produced have low adhesion, or which hassuch surface layer or surface finish.
  • a device for detaching nanofibres having the same construction as in the example of embodiment represented in the Fig. 1 , which comprises cylindrical brush 9, 99 or 999 and a slot 10, 100, 1000 connected with not represented source of under pressure.
  • the spinning chamber 1 is further provided with at least one not represented air outlet, which is preferably positioned in the space under each collecting electrode 6, 66, 666, 6666.
  • the nanofibres produced in the same manner as in the variant represented in the Fig. 1 are caught on the endless belts 8, 88 and 888 and layers are created on them, which are subsequently by means of devices for detaching the nanofibres detached and transformed into fragments of planar layer of nanofibres. These fragments are further by means of slots 10, 100 and 1000 and not represented duct delivered outside the spinning chamber ⁇ for further use.
  • Fig. 3 represents cross-section of similar variant of the spinning chamber 1_ of the device for production of nanofibres according to the invention as in Fig. 2, nevertheless with different manner of guiding the endless belt 80.
  • Three endless belts 8, 88 and 888 from previous variant are here substituted by one endless belt 80, which is by means of system of guiding rollers 7 guided vertically along all collecting electrodes 6, 66, 666 and 6666, and which moves in direction of arrow B0.
  • Further components of the device for production of nanofibres and their functions are identical as in the above described variants.
  • FIG. 4 represents a cross-section of the spinning chamber ⁇ of variant of device for production of nanofibres according to the invention, in which three groups of the spinning electrodes 2, 22, 222, 2222, 20, 220. 2220, 22220, 200, 2200, 22200 and 222200 are arranged side by side, out of which each comprises four spinning electrodes 2, 22, 222 and 2222, or 20, 220, 2220 and 22220, or 200, 2200, 22200 and 222200 arranged one under another.
  • Both collecting electrodes 6 and 60 are always parallel with the respective centre plane D or D2 and are arranged on both sides in the same distance from it.
  • Around all collecting electrodes 60 and 600 assigned to the spinning electrodes 2, 22, 222, 2222, 20, 220, 2220, 22220, 200. 2200, 22200 and 222200 of each group is by means of system of guiding rollers 7 guided vertically in moveable manner endless belt 8, 88, 888, 8888. which serves as mean for deposition of nanofibres and their transport into desired section of the spinning chamber 1_.
  • a device for detaching the nanofibres which in the represented variant comprises cylindrical brush 9, 99, 999, 9999 rotating around its longitudinal axis in direction which is opposite to direction in which moves the respective endless belt 8, 88, 888, 8888, and a slot 10, 100, 1000. 10000 connected with not represented source of under pressure.
  • Other components and functions of the device are identical as in the above described variants of embodiment.
  • Fig. 5 shows a cross-section of the spinning chamber 1 of similar variant of the device for production of nanofibres according to the invention as in Fig. 4, but with different number of spinning electrodes 2, 22, 222, 2222, 20, 220. 2220. 200. 2200. 22200 and 222200 and different manner of guiding the endless belts 80 and 880.
  • Two outer groups of spinning electrodes 2, 22, 222, 2222. 200. 2200. 22200 and 222200 comprise four one under another arranged spinning electrodes 2, 22, 222, 2222 and 200, 2200. 22200. 222200. while the middle group comprises only three such arranged spinning electrodes 20, 220. 2220. To each group of spinning electrodes 2, 22, 222, 2222 and 20, 220, 2220 and 200, 2200.
  • the different number of spinning electrodes 2, 22, 222, 2222. 20, 220, 2220. 200. 2200. 22200 and 222200 in individual groups is used especially for regulation of quantity of nanofibres deposited on individual endless belts 80, 880. which serve as means for deposition of the nanofibres simultaneously for two groups of spinning electrodes 2, 22, 222, 2222. 20, 220, 2220. 200. 2200. 22200 and 222200. eventually due to space reasons, etc.
  • Fig. 6 represents another possibility of arrangement of the spinning electrodes 2 and 22, to them assigned collecting electrodes 6 and 66, and guiding of endless belts 8 and 88 in the spinning chamber 1. of the device for production of nanofibres according to the invention.
  • two spinning electrodes 2 and 22 are mounted askew one under another, so that the centre plane D1 passing through their longitudinal axes 21 and 221 is askew.
  • the collecting electrodes 6 and 66 and endless belts 8 and 88 are then arranged parallel with the centre plane D1 and in the same distance from it.
  • Functions of individual components is as well as function of the whole device identical as in the previous variants of embodiment.
  • the manner of arrangement of the spinning electrodes 2 and 22 askew one under another may also be used at any of the described variants of the device for production of nanofibres according to the invention. Simultaneously at higher number of groups one under another arranged spinning electrodes 2, 22 it is possible that the spinning electrodes 2, 22 are in some groups positioned one under another, and simultaneously in other groups askew one under another. To this then corresponds arrangement of the collecting electrodes 6, 66 and guiding of endless belts 8, 88.
  • All above described variants of device for production of nanofibres according to the invention may further be modified by other spatial arrangement of individual components in the spinning chamber ⁇ and/or their different structure and/or their number, while the quantity of spinning electrodes 2, 22, 222, 2222. 20, 220, 2220. 22220. 200. 2200. 22200 and 222200 and their arrangement is limited substantially only by the space being available.
  • only collecting electrodes 6, 66, 666, 6666. 66666. 6666. 60, 600 are connected with one pole of the source 5 of high direct voltage, and the spinning electrodes 2, 22, 222. 2222, 20, 220, 2220. 22220. 200. 2200. 22200 and 222200 are grounded.
  • the spinning electrodes 2, 22, 222, 2222. 20, 220, 2220. 22220. 200. 2200. 22200 and 222200 and/or collecting electrodes 6, 66, 666. 6666. 66666. 666666. 60, 600 are at the same time according to the need connected with source 5 of high direct voltage, which is common for all spinning electrodes 2, 22, 222, 2222, 20, 220, 2220, 22220, 200, 2200, 22200 and 222200 and/or collecting electrodes 6, 66, 666. 6666, 66666, 6666. 60, 600, or only for certain group of spinning electrodes 2, 22, 222, 2222. 20, 220, 2220. 22220. 200.
  • each spinning electrode 2, 22, 222, 2222. 20, 220. 2220. 22220. 200. 2200. 22200 and 222200 and/or collecting electrode 6, 66, 666, 6666. 66666. 666666. 60, 600 is connected with individual source 5 of high direct voltage.
  • spinning electrodes 2, 22, 222, 2222. 20, 220, 2220. 22220. 200. 2200. 22200 and 222200 and other moving elements positioned in the spinning chamber are coupled with their drives.
  • All spinning electrodes 2, 22, 222, 2222. 20, 220, 2220. 22220. 200. 2200. 22200 and 222200 and/or other moving elements may be coupled with one common drive, this either directly or by means of suitable gear mechanism or certain group of spinning electrodes 2, 22, 222, 2222. 20, 220, 2220. 22220. 200. 2200, 22200 and 222200 and/or of other moving elements is always coupled with common drive, possibly each spinning electrode 2, 22, 222, 2222, 20, 220, 2220. 22220.
  • 200. 2200. 22200 and 222200 and/or other moving element is coupled with individual drive. In certain cases there may be used also combination of the last two methods.
  • Drive/drives of the spinning electrodes 2, 22, 222, 2222. 20, 220, 2220. 22220. 200. 2200. 22200 and 222200 and/or of other moving elements are preferably positioned outside the spinning chamber ⁇ , nevertheless at usage of the invention according to CZ PV 2008-219 at least some of them may be positioned in the spinning chamber 1..
  • the collecting electrodes 6, 66, 666, 6666. 66666. 6666. 60, 600 are permeable for air, while next to the electrically conducting grid, group of wires or metal bars, they may be formed e.g. of perforated metal sheet, etc. On the contrary, in some variants it is advantageous if they are not permeable for air and are formed e.g. of non- perforated metal sheet or metal plate.
  • the reservoirs 4, 44, 40, 440 depending on properties of the used polymer matrix 3 need not to be provided with worms 41 , 441.
  • the endless belts 8, 88, 888, 8888. 80, 800 may be guided around collecting electrodes 6, 66, 666, 6666. 66666. 666666. 60, 600 either in some of the above described manners, or by means of other suitable methods, when e.g. the endless belt 8, 88, 888, 8888. 80, 800 is guided independently vertically along each collecting electrode 60, 600 assigned to one spinning electrode 2, 22, 222, 2222. 20, 220, 2220. 22220. 200. 2200. 22200 and 222200. or along a group of such collecting electrodes 60, 600. In other variants on the contrary one endless belt 8, 88, 888. 8888.
  • any from the endless belts 8, 88, 888, 8888. 80, 800 may be guided in other suitable direction than vertically, this e.g. in askew manner or transverse, possibly it may perform composed movement for suitable deposition of nanofibres.
  • the endless belts 8, 88, 888, 8888. 80, 800 are permeable for air, nevertheless in some variants may be created as non- permeable ones.
  • the means for detaching the nanofibres from endless belts 8, 88, 888. 8888. 80, 800 comprising cylindrical brush 9, 99, 999. 9999 and a slot 10, 100. 1000, 10000 described in the above mentioned variants may further be replaced by structurally different means with the same or similar function and may be positioned in any suitable section of the spinning chamber ⁇ .
  • endless belt/belts 8, 88, 888, 8888, 80, 800 for deposition of nanofibres it is further possible to use another planar means, which is in suitable manner guided along at least one collecting electrode 6, 66, 666, 6666, 66666, 666666, 60, 600.
  • Such means is for example paper, plastic or metal foil, plastic or metal grid, textile, etc., while this means may further be utilised together with deposited layer of nanofibres.
  • the nanofibres have good adhesion to it.
  • some of the known methods described for example in CZ PV 2009-148, CZ PV 2009-149, CZ PV 2010-22722, etc. may be used.
  • the principle of the invention is always a device for production of nanofibres, which comprises at least one group with at least two one under another arranged spinning electrodes 2, 22, 222, 2222, 20, 220, 2220, 22220, 200, 2200, 22200 and 222200, to which from each side the collecting electrodes 6, 66, 666, 6666, 66666, 666666, 60, 600 are assigned.
  • the collecting electrodes 6, 66, 666, 6666, 66666, 666666, 60, 600 are parallel with the centre plane D1 , D2 passing through the longitudinal axes of the spinning electrodes 2, 22, 222, 2222, 20, 220, 2220, 22220, 200, 2200, 22200 and 222200, and are positioned in the same distance from it. At the same time the nanofibres produced are gradually carried towards both collecting electrodes 6, 66, 666, 6666, 66666, 666666, 60, 600. In further variants of embodiment it is possible instead of planar collecting electrodes 6, 66, 666, 6666, 66666, 6666.
  • spinning electrodes 2, 22, 222. 2222. 20, 220, 2220. 22220. 200. 2200. 22200 and 222200 there may be used their other structural embodiments than the spinning electrodes 2, 22, 222. 2222. 20, 220. 2220. 22220. 200. 2200. 22200 and 222200 formed of full cylinder, while for example cylindrical spinning electrodes 2, 22, 222, 2222. 20, 220, 2220. 22220. 200. 2200. 22200 and 222200 comprising protrusions according to WO 2006131081 or spinning elements formed of wire according to CZ PV 2009-525 or EP 2059630 can be used, also the spinning electrodes 2, 22, 222, 2222. 20, 220. 2220. 22220. 200. 2200.
  • the spinning electrodes 2, 22, 222, 2222. 20, 220. 2220. 22220. 200. 2200 22200 and 222200 comprising elongated spinning elements formed of wire known for example from WO2009/010020, to whose surface the polymer matrix 3 is supplied, which is subsequently subject to spinning from this surface.
  • the collecting electrodes 6, 66, 666, 6666. 66666. 6666. 60, 600 assigned to such spinning electrodes 2, 22, 222, 2222. 20, 220. 2220. 22220. 200. 2200. 22200 and 222200 are on both sides of the spinning electrode 2, 22, 222, 2222. 20, 220, 2220. 22220. 200. 2200. 22200 and 222200 arranged in the same distance from it.

Abstract

La présente invention concerne un dispositif pour produire des nanofibres au moyen du filage électrostatique d'une matrice polymère (3) dans un champ électrique induit entre une électrode collectrice (6, 66, 666, 6666, 66666, 666666) et une électrode de filage (2, 22, 222, 2222, 20, 220, 2220, 22220, 200, 2200, 22200, 222200) de forme allongée ou une électrode de filage comprenant des éléments de filage de forme allongée dont le principe consiste en ce qu'il comprend au moins deux électrodes de filage (2, 22, 222, 2222, 20, 220, 2220, 22220, 200, 2200, 22200, 222200) de forme allongée ou au moins deux électrodes de filage comprenant des éléments de filage de forme allongée disposés les uns sous les autres, pendant qu'à chaque électrode de filage (2, 22, 222, 2222, 20, 220, 2220, 22220, 200, 2200, 22200, 222200), une électrode collectrice (6, 66, 666, 6666, 66666, 666666) est affectée depuis les deux côtés à la même distance.
PCT/CZ2011/000069 2010-08-30 2011-07-18 Dispositif pour produire des nanofibres WO2012028117A1 (fr)

Applications Claiming Priority (2)

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CZPV2010-648 2010-08-30
CZ20100648A CZ2010648A3 (cs) 2010-08-30 2010-08-30 Zarízení pro výrobu nanovláken

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CN103696025A (zh) * 2013-12-24 2014-04-02 北京化工大学 一种可控的叠加式双向纺丝装置
EP2746439A1 (fr) * 2012-12-21 2014-06-25 Technicka Univerzita v Liberci Moyens d'application d'une solution polymère sur l'électrode de filage en forme de corde
CN105887214A (zh) * 2014-08-25 2016-08-24 刘钢 一种静电纺丝制膜装置

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Publication number Priority date Publication date Assignee Title
CZ2014418A3 (cs) * 2014-06-18 2016-04-27 Technická univerzita v Liberci Způsob pro výrobu nanovláken elektrostatickým zvlákňováním roztoku nebo taveniny polymeru, a zařízení k jeho provádění

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CN103696025B (zh) * 2013-12-24 2015-09-02 北京化工大学 一种可控的叠加式双向纺丝装置
CN105887214A (zh) * 2014-08-25 2016-08-24 刘钢 一种静电纺丝制膜装置

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