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WO2012033469A1 - Système comprenant un cylindre ondulé et une unité à mouvement linéaire pour la fabrication de nanofibres ou de nanoparticules via un filage électrostatique - Google Patents

Système comprenant un cylindre ondulé et une unité à mouvement linéaire pour la fabrication de nanofibres ou de nanoparticules via un filage électrostatique Download PDF

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Publication number
WO2012033469A1
WO2012033469A1 PCT/TR2011/000188 TR2011000188W WO2012033469A1 WO 2012033469 A1 WO2012033469 A1 WO 2012033469A1 TR 2011000188 W TR2011000188 W TR 2011000188W WO 2012033469 A1 WO2012033469 A1 WO 2012033469A1
Authority
WO
WIPO (PCT)
Prior art keywords
distributor
roller
chemical
linear motion
panel
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.)
Ceased
Application number
PCT/TR2011/000188
Other languages
English (en)
Inventor
Erman Ekler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ATALAR OMER YALCIN
Original Assignee
ATALAR OMER YALCIN
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 ATALAR OMER YALCIN filed Critical ATALAR OMER YALCIN
Publication of WO2012033469A1 publication Critical patent/WO2012033469A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
    • 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
    • D01D13/00—Complete machines for producing artificial threads
    • 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
    • D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
    • D01D5/0084—Coating by electro-spinning, i.e. the electro-spun fibres are not removed from the collecting device but remain integral with it, e.g. coating of prostheses

Definitions

  • the invention relates to the system providing production of nanofibres or nanoparticles via electrostatic spinning, and porous or nonporous surface coating with these.
  • the invention particularly relates to a system, which uses at least one main polymer mixed with cross bonding agent, and which comprises static mixer, distributor and electrostatic head having roller suitable with this.
  • the system also comprises a linear motion unit, wherein the head can go back and forth on a line.
  • Electrospinning mechanisms are mechanisms frequently used in laboratories. Basically, these mechanisms are formed of high voltage unit, polymer chamber, and needle-like thin channel pipes ensuring flow of polymers. However, these are quite difficult systems to be formed in industrial level. Because needle like pipes can be clogged, adjustment of the coulombic forces between needles becomes very expensive, and homogeneous nanofibre distribution can not be obtained.
  • roller systems such as the one disclosed in the patent with publication no WO 2009/049566 can also be used.
  • the lateral surfaces of the rollers are plain in these systems and thus they may cause local electrical discharge problem, called corona discharge.
  • corona discharge local electrical discharge problem
  • homogeneous chemical distribution can not be obtained oh the roller surface.
  • Another problem of the same system is not having a closed polymer chamber system and the polymer flow being from downward to upwards.
  • the vapour of the solvent used can not be removed away from the application surface or it is removed very difficulty. Therefore, external structures of nanofibres change, where they are subject to vapour, and integrity of the final product can not be obtained due to changing of the nanofibre diameter etc. reasons.
  • cross bonding agent can not be used in said systems. Because, the polymer chamber of the system is in open state. Binder agent can not be fed to the roller. Homogeneous mixture can not be obtained even when the polymer and agent are tried to be mixed in an open system. Therefore, providing complete adherence on the application surface (especially for PVA and suchlike materials) becomes a quite difficult operation.
  • the width of the coated surface is generally limited to at most 160 cm. This obstructs making production with any dimension.
  • Vaporization occurs in said prior art systems because of using highly volatile solvents or compositions. Continuous operation of the process is not possible due to vaporization.
  • the invention is formed by being inspired from the prior art and aims to solve the above said problems.
  • Primary purpose of the invention is to provide a system, which ensures obtaining nanofibre or nanoparticle via electrostatic spinning method or provides surface coating with these.
  • Another purpose of the invention is to provide storing, mixing, and distribution of main polymer chemical and binder agent in a closed system and thus prevent composition ratio changes formed due vaporization.
  • the purpose of the invention is to form a system, which can both operate with water based and solvent based chemicals via the closed system and corrugated roller. It is another purpose of the invention to form a continuously operating system especially via the closed circuit mechanism, which does not allow vaporization.
  • Another purpose of the invention is to obtain a vertically and horizontally straight fiber orientation and homogeneity via the corrugated roller and roller scraper mechanism.
  • a purpose of the invention is to provide removal of the air to be formed in the system and transmission of the chemical to the electrostatic head without surge pressure via the distributor having dual distributor.
  • Another purpose of the invention is to provide coating of surfaces with the desired industrial width via the linear motion unit obtained with the desired length.
  • Another purpose of the invention is to orient electrostatic field and polymer flow and provide a uniform fibre flow by closing the three sides of the corrugated roller.
  • Another purpose of the invention is to provide formation of much smaller variation coefficient than the prior art for nanofibres and nanoparticles by continuously maintaining the electric field straight and the fed polymer solution constant.
  • Figure-1 shows the perspective view of the system, which is the subject of the invention.
  • Figure-2 shows the perspective view of the chemical supply unit.
  • Figure-3 shows the exploded perspective view of the chemical supply unit.
  • Figure-4 shows the exploded perspective view of the distributor.
  • Figure-5 shows the perspective view of the electrostatic head unit and linear motion unit.
  • Figure-6 shows the exploded perspective view of the electrostatic head unit.
  • Figure-7 shows the perspective view of the electrostatic head.
  • Figure-8 shows the exploded perspective view of the electrostatic head.
  • Figure-9 shows the exploded perspective view of the distribution and sealing panel.
  • Figure-10 shows the representative coating operation made with the system, which is the subject of the invention.
  • Main polymer chemical supply unit 220 Distribution and sealing panel
  • Electrostatic head unit 320 Control rack
  • Chassis 330 Support profile
  • the invention relates to the system providing production of nanofibres or nanoparticles via electrostatic spinning and porous or nonporous surface coating with these (Figure-1).
  • the invention is basically formed of at least one main polymer chemical supply unit (100), at least one electrostatic head unit (200), to which the chemical supplied from the supply unit (100) via pipes (101) is transmitted and which provides obtaining product or making coating from the chemical, at least one linear motion unit (300) providing linear motion of said head unit (200), and at least one collector (400), on which the product is collected by being positioned across said linear motion unit (300) and the electrostatic head unit (200) or coating operation is made with the product.
  • the chemical supply unit (100) comprises at least one main polymer chemical tank (110) and at least one pump (111) which provides taking of chemical from this tank (110), at least one cross bonding agent tank (120) and at least one pump (121) which provides taking of agent from this tank (120), at least one static mixer (130) providing mixing of materials coming from the main polymer chemical tank (110) and cross bonding agent tank (120), and at least one distributor (140) distributing the mixture coming from the mixer (130) to at least two branches in equal amounts and pressure ( Figure-2 and 3).
  • one each tank (110, 120) and one pump (111 , 12 ) is found for each tank.
  • Said tanks (110, 120) are made of PTFE (Polyetrafluoroethylene) material and coated with polyimide for preventing corona discharge, which is a partial (local) type of electrical discharge.
  • pneumatic actuator pressure balancing valves (114, 124) are found on the tanks (110, 120) with the purpose of avoiding formation of negative pressure when material is taken from inside and thus maintain the inner pressure of the tank and the flow rate of the pump (111 , 121 ) constant. In this way, inside pressure is continuously kept constant by addition of air or inert gas.
  • Said pumps (111 , 121 ) are micro geared pumps (111 , 121) preferably rotated with the help of servo motor (112, 122).
  • the connection between the servo motor (112, 122) and the pump (111, 121) is made via coupling (113, 123).
  • Couplings (113, 123) are obtained from Delrin® or kestamid.
  • Electronic accessories of the pumps are positioned within vacuum tubes in order to avoid losses in high voltage.
  • pumps (111 , 121) are also made of PTFE material due to the same reason. Chemicals carried from tanks (110, 120) and pumps (111, 121) via pipes (101 ) are mixed homogeneously in the static mixer (130) in desired ratios.
  • Said pipes (101 ) are obtained as double walled.
  • the inner and outer perimeter of the pipe is made of PTFE material and the inner wall is coated with polyimide film in order to prevent loss of electricity.
  • the chemical cross bonding agent is diluted with a solvent in accordance with the composition of the main polymer chemical. For example, if PVA nanofibre production would be made, glutaraldehyde cross bonding agent would be mixed with water in 1 :2 to 1 :10 ratio, then stored in the bonding agent tank (120) in this way, and then given to the static mixer (130).
  • the ratio of the amount of polymer material in the polymer solution to the active cross bonding agent varies between 3:1 to 40:1.
  • the chemical, dosing amount of which is adjusted with the revolution speed of servo motors (130), has a heterogeneous structure when it reaches the static mixer (130) (polyether ether ketone (PEEK) or PTFE), but a homogeneous mixture is formed at the exit of the static mixer. Usage or design of the static mixer depends on the chemicals used. In general non- clog type static mixer (130) is preferred. The length of the static mixer (130) varies according to the polymer solution density and the cross bonding agent applied. In some cases, more than two static mixers (130) are required to be used when a third reactive component has to be applied in nanofibre or nanoparticle production.
  • said distributor (140) comprising at least one cover (141) with at least one chemical inlet (142) comprises at least one first distributor (143), which distributes the chemical entering from a single point into three equal branches in equal pressure and amounts and at least one second distributor (144), which provides separation of the chemical coming from the three points of the first distributor into three more branches for each, that is to say, into nine branches in total in equal pressure and amounts (Figure-4).
  • Said number of branches can be increased or decreased arbitrarily. However, necessary pressure and mass calculations have to be made carefully.
  • the invention comprises distributor channels (145), which are formed on the surface of the Disc-form distributors (143, 144) where the chemical comes to, and which become deeper starting from the combination point of the branches found in threes towards the ends with about 5° angle according to said surface. 120° angle is found between said channels (145) found in threes ( Figure-4).
  • each sealing component (146) is found between the cover (141), first distributor (143), and second distributor (144).
  • Sealing component housing (149) can be formed on the surfaces of the cover (141) and distributors (143, 144) contacting with the sealing component (146).
  • Said sealing component (146) is o- ring made of Kapton®, karles, Viton®, PTFE or EPDM (Ethylene Propylene Diene Monomer). Moreover said components (141, 143, 144) are coated with polyimide film.
  • At least one each pipe connection components (147) are connected to the inlets and/or outlets of the distributor (140). Since there are nine outlets in the preferred embodiment as mentioned above, also nine outlet pipe connection components (147) are found. These components (147) are preferably pipe coupling.
  • Distributor (140) finally comprises at least one each connection component channel (148) formed on the cover (141), the first distributor (143), and the second distributor (144) and providing fixation between these components.
  • Preferred embodiment has six channels (148). However, the number may change according to demand.
  • the distributor connection components passing through these channels (148) and cover (141), first distributor (143), second distributor (144), and pipe connection components (147) are made of PTFE material.
  • the chemical incoming by being separated in the distributor (140) found in the chemical supply unit (100) is transferred to the electrostatic head unit (200) as stated above.
  • Electrostatic head unit (200) comprises:
  • ⁇ at least one drive component (250), which drives/actuates the electrostatic head (210),
  • ⁇ at least one drive mechanism (262), which is fixed on the chassis (201) via a fixing piece (263), which is connected to the carrier shaft (261), and which thus moves the head unit (200) by driving the shaft (261) and the gear (260) ( Figure-6).
  • Said electrostatic head (210) comprises:
  • Said roller (211) is preferably used between 1 to 150 revolutions per minute (RPM). While 1- 60 revolution/minute is preferred in nanofibre production; 100-150 revolution/minute is preferred in nanoparticle production. Roller (211) can carry 0.5-60 ml of chemical in each cycle via its micro pores ( Figure-8). This amount may change according to the chemical used. In order to obtain said amount, the roller (211) is changed with the suitable corrugated roller (211).
  • Electrostatic head (210) is connected on the chassis (201) in more than one way.
  • Main connection is made by placement of at least one support component (224), which is in the form of a shaft formed on the surface of the distribution and sealing panel main body (221 ) not facing the roller (211) and preferably used in three units, inside at least one linear bearing (270) fixed on the chassis (201).
  • the preferred amount here is two support components (224) per panel (220) and two corresponding linear bearings (270) for each.
  • a piston channel (222) preferably formed at a central point is found at the same surface of the panel (220).
  • One each piston (223), fixed on the chassis (201) via a fixing piece (229), is connected to this channel (222). In this way, said panels (220) are brought close to the roller (211) or taken away from the roller when required.
  • single piston (223) is used, the motion is made linearly thanks to said support components (224) and linear bearings (270).
  • connection only provides connection of the distribution and sealing panel (220).
  • roller bearings (280) are fixed on the chassis (201) and the roller (211) is positioned between these two corresponding bearings (280) ( Figure-6).
  • the drive component (250) is preferably found as one unit in the electrostatic head unit (200).
  • one each balancing wheel or gear is fixed as the connecting piece (213) to the motor shaft and roller shaft ends, and these two components are connected to preferably one drive transmission component (212).
  • said component (212) is preferably a plastic belt.
  • Chemical brought to the electrostatic head (210) via pipes (101 ) is transferred on the roller (211) via at least one pipe connection component (225) (preferably three units for meeting said nine lines) formed at the outer surface of each of the distribution and sealing panels (220).
  • pipe coupling is used as said connection component (225).
  • the invention comprises:
  • one mechanical seal (214) is also found at both of the two ends of the roller.
  • the roller (211) and its central shaft as the only conductors found in the electrostatic head (210) are loaded with positive voltage via the high voltage unit (215) connected to the shaft.
  • the collector (400) comprising an adjustable height body (410) and at least one collector surface (420) positioned on this body (410) has said surface (420) as the only conductive component and it is loaded with negative voltage again via a high voltage unit (430). In this way, the chemical flowing to the collector surface (420) takes the form of nanofibre via electrostatic spinning method.
  • Said roller (211), roller shaft, and collector surface (420) can be made of metal or another known conductive material.
  • the distance between the electrostatic head (210) and the collector surface (420) may change between 10 to 60 cm according to the final product desired and/or the chemical used.
  • the head unit (200) beginning to produce nanofibre or nanoparticle can go back and forth on a linear motion unit (300) preferably having the length of the collector surface (420).
  • the head unit (200) comprises said linear motion gear (260), carrier shaft (261), and drive mechanism (262).
  • the system is preferably formed of two parallel carrier shafts (261 ), four bearings (264) providing bearing to these, total of four gears (260) fixed at the two ends of the shafts (261), and a motor driving one of the shafts (261).
  • Linear motion unit (300) comprises:
  • Gear (260), control rack (320), and bearing components of these used with the purpose of linear motion are completely made of plastic in order to prevent electric leakage.
  • the high voltage unit (215) used in the invention and connected to the roller (211) can produce a voltage value in the range of 30 to 120 kV and can operate with a current value between 0-3.5 A.
  • the unit (430) connected to the collector surface (420) can produce a voltage value between 10 to 60 kV and can operate with a current value between 1500 to 2500 mA.
  • the surface to be coated is loosened (500) at one side of the collector (400) and wrapped (550) at the other side of the collector (400). After coating of the surface passing over the collector surface (420), the coated surface is wrapped and then new surface coming to the collector surface (420) is coated ( Figure-10).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)

Abstract

L'invention concerne un système pourvu d'une unité à mouvement linéaire qui utilise au moins un polymère principal mélangé à un agent de réticulation, comporte un mélangeur statique, un distributeur et une tête électrostatique utilisant un cylindre ondulé, et sur lequel la tête peut reculer ou avancer en suivant une ligne pour permettre la production de nanofibres ou de nanoparticules via un filage électrostatique et le revêtement de surface poreux ou non poreux de ceux-ci.
PCT/TR2011/000188 2010-09-06 2011-08-22 Système comprenant un cylindre ondulé et une unité à mouvement linéaire pour la fabrication de nanofibres ou de nanoparticules via un filage électrostatique Ceased WO2012033469A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2010/07415A TR201007415A2 (tr) 2010-09-06 2010-09-06 Elektrostatik spinning ile nanoelyaf veya nanopartikül elde etmek üzere tramlı merdane ve lineer hareket ünitesine sahip sistem.
TR2010/07415 2010-09-06

Publications (1)

Publication Number Publication Date
WO2012033469A1 true WO2012033469A1 (fr) 2012-03-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/TR2011/000188 Ceased WO2012033469A1 (fr) 2010-09-06 2011-08-22 Système comprenant un cylindre ondulé et une unité à mouvement linéaire pour la fabrication de nanofibres ou de nanoparticules via un filage électrostatique

Country Status (2)

Country Link
TR (1) TR201007415A2 (fr)
WO (1) WO2012033469A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114481340A (zh) * 2022-03-11 2022-05-13 李红梅 一种自动化静电纺纱装置及其使用方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1975504A (en) 1929-12-07 1934-10-02 Richard Schreiber Gastell Process and apparatus for preparing artificial threads
WO2006123858A1 (fr) * 2005-05-18 2006-11-23 Industrial Cooperation Foundation Chonbuk National University Procede de fabrication par electrofilage de mats en nanofibres et mats produits selon le procede
WO2008028428A1 (fr) 2006-09-04 2008-03-13 Elmarco S.R.O. Électrode de filage tournante
CN101280469A (zh) * 2008-05-09 2008-10-08 宁波大学 一种用于制备多孔纳米纤维的电纺丝装置
WO2009049566A2 (fr) 2007-10-18 2009-04-23 Elmarco, S.R.O. Dispositif de production d'une couche de nanofibres par filage électrostatique de matrices de polymères et électrode collectrice d'un tel dispositif
CN101492838A (zh) * 2009-01-14 2009-07-29 南通大学 一种自动静电纺丝装置
WO2010148644A1 (fr) * 2009-06-24 2010-12-29 中国科学院理化技术研究所 Machine à membrane d'électrofilature dans des directions de chaîne et de trame et procédé d'application de celle-ci

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1975504A (en) 1929-12-07 1934-10-02 Richard Schreiber Gastell Process and apparatus for preparing artificial threads
WO2006123858A1 (fr) * 2005-05-18 2006-11-23 Industrial Cooperation Foundation Chonbuk National University Procede de fabrication par electrofilage de mats en nanofibres et mats produits selon le procede
WO2008028428A1 (fr) 2006-09-04 2008-03-13 Elmarco S.R.O. Électrode de filage tournante
WO2009049566A2 (fr) 2007-10-18 2009-04-23 Elmarco, S.R.O. Dispositif de production d'une couche de nanofibres par filage électrostatique de matrices de polymères et électrode collectrice d'un tel dispositif
CN101280469A (zh) * 2008-05-09 2008-10-08 宁波大学 一种用于制备多孔纳米纤维的电纺丝装置
CN101492838A (zh) * 2009-01-14 2009-07-29 南通大学 一种自动静电纺丝装置
WO2010148644A1 (fr) * 2009-06-24 2010-12-29 中国科学院理化技术研究所 Machine à membrane d'électrofilature dans des directions de chaîne et de trame et procédé d'application de celle-ci

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* Cited by examiner, † Cited by third party
Title
A. M. DOS SANTOS ET AL: "Production of Continuous Electrospun Mats with Improved Mechanical Properties", MACROMOLECULAR MATERIALS AND ENGINEERING, vol. 296, no. 7, 12 July 2011 (2011-07-12), pages 637 - 644, XP055002317, ISSN: 1438-7492, DOI: 10.1002/mame.201000288 *
DATABASE WPI Week 200880, Derwent World Patents Index; AN 2008-N70415, XP002668114 *
DATABASE WPI Week 200955, Derwent World Patents Index; AN 2009-M35201, XP002668113 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114481340A (zh) * 2022-03-11 2022-05-13 李红梅 一种自动化静电纺纱装置及其使用方法

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