CN104060355B - Production method and device for continuous nano-fiber yarn - Google Patents
Production method and device for continuous nano-fiber yarn Download PDFInfo
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- CN104060355B CN104060355B CN201410266989.0A CN201410266989A CN104060355B CN 104060355 B CN104060355 B CN 104060355B CN 201410266989 A CN201410266989 A CN 201410266989A CN 104060355 B CN104060355 B CN 104060355B
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Abstract
The invention discloses a production method and device for a continuous nano-fiber yarn. The production method comprises the following processing steps: (1) preparing a polymer solution; (2) performing nano-jet injection and forming fibers; (3) forming the continuous nano-fiber yarn. The production device is designed according to the production method provided by the invention and mainly comprises a spinning system, a twisting system and a winding system, wherein the spinning system comprises an injection pump, an injector, a spinning nozzle and a high-voltage power supply; the twisting system comprises a controller and a turntable; the winding system comprises a solution tank, a roller and a controller. Compared with the prior art, the production method and device provided by the invention are characterized in that the continuous nano-fiber yarn is prepared by rotating and twisting two nano-fiber bundles which are formed by controlling the polarity of the turntable by an electric brush; the continuous preparation of the nano-fiber yarn is realized; the mechanical property of the yarn is increased; the twisting of the yarn is uniform; the yarn levelness is good; the hairiness is less; the application value is huge.
Description
Technical field
The present invention relates to field of textiles, specially a kind of polarity two bursts of bundles of nanofibers of formation that rotating disk is controlled by brush
Rotation twisted prepares the production method and device of continuous nano-fibre yarn.
Background technology
Electrostatic spinning is the simple and effective technology for currently preparing nanofiber.Electro spinning nano fiber has excellent property
Can, many aspects such as filtering material, bio-medical material, composite reinforcing material, sensor are may apply to, prospect is very wide
It is wealthy.As the unstability of electrified jet bend tension is limited, nanofiber is mainly collected in the form of non-woven fabrics, and this nothing
The structure of sequence is restricted in the application aspect for needing highly oriented structure, therefore, the controllable nano fibre yarn of preparation structure can expand
The range of application of nanofiber is filled, with wide potential using value.
At present, the production method master of the continuous nano-fibre yarn that the research institution and manufacturing enterprise of countries in the world commonly uses
There are mechanical twisting method, air-swirl twisting method, dynamic immersion method, ribbon-like fibre net aggregation method and auxiliary electric field method etc..Wherein,
Mainly have about the document report of mechanical twisting method：《Novel mechanism for spinning continuous
twisted composite nanofiber yarns》(Mohamed Basel Bazbouz, European Polymer
Journal [J], 2008,44：1-12.), main technique principle is disposed vertically with a determining deviation by what motor control was grounded
Copper sheet collect nanofiber, copper sheet is used for twisting, and another is used for winding yarn.Relevant air-swirl twists the text of method
Offering report mainly has：《Electrospinning of Continuous Aligning Yarns with a‘Funnel’
Target》(Amalina M.Afifi, Macromol.Mater [J] .2010,295：660-665.), air-swirl twists method
Main technique principle be rotated using hollow hemisphere to be formed air-swirl drive bundles of nanofibers rotation twisting form continuous nanometer
Silvalin.Mainly have about the document report of dynamic immersion method：《A dynamic liquid support system for
continuous electrospun yarn fabrication》(Wee-Eong Teo, Polymer, 2007,48：3400-
3405.), the main technique principle of dynamic immersion method is the whirlpool to be formed that flowed downward from the aperture that bath bottom is opened using liquid
Fiber is carried out stretching, boundling, final winding obtains continuous fiber yarn.About the document report of ribbon-like fibre net aggregation method
Mainly have：World patent WO073442 and WO 073442, the main technique principle of ribbon-like fibre net aggregation method are as traditional quiet
The same non-weaving cloth (being cut into banding) that random arrangement is obtained on the catcher of conveyor type of electrospinning or band, then use and add
Twister forms yarn to the certain twist of fibre bundle, then stretched Lora gathers merging, is finally wound up on collecting drum.It is relevant
The document report of auxiliary electric field method mainly has：《Manipulation ofthe electric field of
electrospinning system to produce polyacrylonitrile nanofiber yarn》
(F.Dabirian, Journal of the Textile Institute [J], 2007,98：237-241.), auxiliary electric field method
Main technique principle be by change electric field jet is controlled realize fiber align reach preparation continuously receive
The purpose of rice fiber yarn.
The systems such as mechanical twisting method, air-swirl twisting method, dynamic immersion method, ribbon-like fibre net aggregation method and auxiliary electric field method
All there is certain limitation in standby nanofiber, generally existing equipment is complicated, the poor continuity of yarn, lack of homogeneity and intensity is low asks
Topic.
The content of the invention
For the deficiencies in the prior art, the technical problem to be solved is to provide a kind of life of nano fibre yarn
Method and device is produced, the production method and device can realize prepared by the serialization of nano fibre yarn, prepared nanofiber
Twist per unit is uniform, and bar makes a good job of, and filoplume is few, good mechanical performance, and device is simple, and easy to operate, industrialization promotion is easy.
The present invention solves the technical scheme of the process units technical problem：Design a kind of production dress of nano fibre yarn
Put, the process units is applied to the production method of nano fibre yarn of the present invention, mainly including spinning system, twist system
And reel system.Wherein, the spinning system includes syringe pump, syringe, spinning head, high voltage power supply, the connection of syringe one end
Syringe pump, other end connection spinning head, positive or negative high voltage power supply are added on two spinning heads respectively；The twist system includes control
Device and rotating disk, the polarity of the rotary speed and carbon brush of controller control rotating disk；The reel system include liquid bath, coiler device and
Controller, controller drive coiler device to rotate and collect nano fibre yarn.
The production method of continuous nano-fibre yarn of the present invention, it is characterised in that the life of described continuous nano-fibre
Product mode is bipolarity nozzle electrospinning method, and the polymer solution in syringe is respectively transmitted to two and is arranged in by syringe pump
The spinning head of both sides, the spinning head of two kinds of polarity can be with symmetric arrays or asymmetric geometry, and generating positive and negative voltage is carried in spray webbing respectively
On head, the spinning head quantity of every kind of polarity can be it is single can also be multiple.Jet arrangement mode with identical polar
For straight line or camber line.
The production method of continuous nano-fibre yarn of the present invention, it is characterised in that described polymer can be poly- second
The fiber-forming polymer such as enol, polyacrylonitrile or polyamide material, or natural material such as keratin etc., or two kinds mixed
Close polymer.
The production method of continuous nano-fibre yarn of the present invention, it is characterised in that described continuous nano-fibre yarn can
To be directly wound up on coiler device, it is also possible to first pass through liquid bath and be then wound onto on coiler device.
The production method of continuous nano-fibre yarn of the present invention, it is characterised in that liquid bath, described liquid can be used
Water or other are filled in groove contributes to the solution of nanofiber ordered arrangement, and the temperature range of solution is 4～100 DEG C.
A kind of process units of continuous nano-fibre yarn of the present invention, the process units are applied to aforementioned any one company
The production method of continuous nano fibre yarn, mainly including spinning system, twist system and reel system, wherein, the spinning system
Including syringe pump, syringe, spinning head, high voltage power supply, syringe one end connection syringe pump, other end connection spinning head are positive and negative
High-voltage DC power supply is added on two spinning heads respectively；The twist system includes controller and rotating disk, controller control rotating disk
Rotary speed and carbon brush polarity；The reel system includes liquid bath, coiler device and controller, and controller drives winding dress
Put rotation and collect nano fibre yarn.
The process units of continuous nano-fibre yarn of the present invention, it is characterised in that the angle between described spinning head
With apart from adjustable, adjustable extent is respectively 0 °～180 ° and 10～500mm；The spinning head is adjustable with the distance between rotating disk,
10～500mm of adjustable extent；Between the rotating disk and coiler device, distance is adjustable, 40～800mm of range of accommodation.
The process units of continuous nano-fibre yarn of the present invention, it is characterised in that described rotating disk is internal band carbon brush
Metal and the alternate fan-shaped array of insulant horn mouth or cylinder, carbon brush causes the top half of turntable rotation plane
With the latter half all the time with contrary electric polarity, or the contrary electricity of left-half and right half part band of the Plane of rotation of rotating disk
Polarity.Described fan-shaped size is identical, and number is 2～8.
The process units of continuous nano-fibre yarn of the present invention, it is characterised in that being mounted with described liquid bath can be with
Adjust the pressure roller of tension force.
The present invention solves the technical scheme of the production method technical problem：Design a kind of producer of nano fibre yarn
Method, the production method are comprised the technical steps that：
(1) prepare polymer solution：The polymer solution of appropriate mass percent concentration is prepared, by polymer and its molten
Agent is uniformly mixed under suitable condition, and the polymer solution bottling for obtaining preparing after standing 1-2 hours is standby；It is described
Polymer refer to the fiber-forming polymer such as polyvinyl alcohol, polyacrylonitrile or polyamide material, or natural material such as keratin
Deng, or two kinds of mixed polymers；Described solvent includes distilled water, ethanol, formic acid, dimethylformamide or chloroform etc.；
The appropriate mass percent concentration refers to that the mass percent of the solution that preparation can obtain nanofiber with electrostatic spinning is dense
Degree；The appropriate condition instigates the conditions such as temperature, humidity and the mixing time of polymer and its solvent mix homogeneously.
(2) nanometer jet is injected into fibre：Solution in syringe pump pushing syringe forms drop at spinning head, appropriate
The lower nanometer jet of voltage effect eject, slenderizing flies to rotating disk into nanofiber at normal temperatures and pressures；It is described appropriate
Voltage is that the electrostatic force for instigating drop to be subject to sprays the voltage to form nanometer jet more than surface tension；The rotating disk is referred to can
The metal with carbon brush rotate at high speed and loudspeaker, the hollow or solid cylinder of the alternate fan-shaped array of insulant.
(3) continuous nano-fibre yarn forming：The contrary electrode of the top half and the latter half band of the Plane of rotation of rotating disk
Property, or the contrary electric polarity of left-half and right half part band of the Plane of rotation of rotating disk, the nanofiber with positive and negative charge
Plane of rotor disc is moved to, such as positively charged nanofiber is attracted to the part of the negatively charged polarity of Plane of rotation all the time, conversely,
Negatively charged nanofiber is attracted to the part of Plane of rotation positively charged polarity all the time, pulls out two bundles of nanofibers,
When rotating disk is rotated with appropriate speed, two bundles of nanofibers twisteds are into a nano fibre yarn, adjustment rotating disk and coiler device
Between vertical dimension, and the velocity of rotation of coiler device, the nano fibre yarn for drawing gained are directly wound up into coiler device
Above or it is then wound onto on coiler device through a liquid bath, and makees by the bonding effect between fiber itself and the cooling of air
With making the fiber solidifying into described continuous nano-fibre yarn of collection.Described appropriate rotating speed is continuously to be received
The speed of rice silvalin.
Compared with prior art, the present invention is that the polarity for controlling rotating disk by brush forms two bundles of nanofibers rotation sth. made by twisting
Conjunction prepares the production method and device of continuous nano-fibre yarn, it is possible to achieve prepared by the serialization of nano fibre yarn, by rotating disk
Rotation by two bundles of nanofibers twisteds into nano fibre yarn, the mechanical performance of yarn is improved；Yarn is through liquid drawing-off
Nanofiber is further orientated, improve the bar evenness of nano-fibre yams, reduce filoplume, mechanical performance is further carried
It is high；The process units is simple to manufacture, easy to operate, and industrializing implementation is easy.
Description of the drawings
Fig. 1 is structural representation (the brush control plane of rotor disc left-half that the present invention prepares electrostatic spinning nano fiber yarn
With right half part oppositely charged)；
Fig. 2 is the structural representation that rotating disk of the present invention is four parts of formula hollow cylinders；
Fig. 3 is the structural representation that the present invention prepares electrostatic spinning nano fiber yarn method；
Fig. 4 is the structural representation that the present invention prepares electrostatic spinning nano fiber covering yarn；
In figure：1. the first high voltage power supply, 2. the second high voltage power supply, 3. the first syringe, 4. the second syringe, 5. rotating disk,
6. liquid bath, 7. coiler device, 8. pressure roller.
Specific embodiment
The present invention is expanded on further with reference to embodiment and its accompanying drawing.
A kind of production method and device (referring to Fig. 1) of nano fibre yarn of present invention design, the production method includes as follows
Processing step：
(1) prepare polymer solution：The polymer solution of appropriate mass percent concentration is prepared, by polymer and its molten
Agent is uniformly mixed under suitable condition, and the polymer solution for obtaining preparing after standing 1-2 hours loads the first injection
Device 3 and the second syringe 4；Described polymer refers to the fiber-forming polymer material such as polyvinyl alcohol, polyacrylonitrile or polyamide, also may be used
Being natural material such as keratin etc., or two kinds of mixed polymers；Described solvent include distilled water, ethanol, formic acid, two
Methylformamide or chloroform etc.；The appropriate mass percent concentration refers to that preparation can obtain nanofiber with electrostatic spinning
The mass percent concentration of solution；The appropriate condition is instigated the temperature of polymer and its solvent mix homogeneously, humidity and is stirred
Mix the conditions such as time.
(2) nanometer jet is injected into fibre：Syringe pump promotes the first syringe 3 and the solution in the second syringe 4 in spray webbing
Drop is formed at head, nanometer jet is ejected under appropriate voltage effect, and slenderizing is into nanofiber at normal temperatures and pressures
Fly to rotating disk 5；The appropriate voltage is that the electrostatic force for instigating drop to be subject to sprays to form a nanometer jet more than surface tension
Voltage.
(3) continuous nano-fibre yarn forming：The contrary electrode of the left-half and right half part band of the Plane of rotation of rotating disk 5
Property, the nanofiber with positive and negative charge are moved to after plane of rotor disc, and positively charged nanofiber is attracted to rotary flat all the time
The part of the negatively charged polarity in face, conversely, negatively charged nanofiber is attracted to the positively charged polarity of Plane of rotation all the time
Part, pull out two bundles of nanofibers, when rotating disk 5 is rotated with appropriate speed, two bundles of nanofibers twisteds are into one
Nano fibre yarn, adjusts the vertical dimension between rotating disk 5 and coiler device 7, and the velocity of rotation of coiler device 7, draws institute
The nano fibre yarn for obtaining directly can be wound up on coiler device 7, may also pass through liquid bath 6 and pressure roller 8 is then wound onto coiler device 7
On, and by the bonding effect between fiber itself and the cooling effect of air, make the fiber solidifying of collection continuously receive into described
Rice silvalin.Described appropriate rotating speed is the speed that can obtain continuous nano fibre yarn.
Heretofore described appropriate mass percent concentration mainly with high molecular polymer used and its molecular weight and selection
The species of solvent is relevant, for example, when described polymer selects polyvinyl alcohol, in the ratio that the mass ratio of water and ethanol is 1: 1
Mixed solvent in dissolve, when mass percent solubility reach 12% and more than, you can meet the technological requirement, in other words,
For polyacrylonitrile (molecular weight is 80000g/mol), the appropriate mass percent concentration in dimethylformamide should
When being >=6%.
Heretofore described appropriate voltage is that the electrostatic force for instigating drop to be subject in the electric field is sprayed more than surface tension
Voltage required during nanometer jet is formed, for example, the solution is that (solvent is water and ethanol, quality to 14% poly-vinyl alcohol solution
Than for 1: when 1), appropriate voltage should reach 12kV and more than.
The present invention according to described production method, while devising a kind of process units of Static Spinning continuous nano-fibre yarn
(referring to Fig. 1), including spinning system, twist system and reel system, the spinning system includes syringe pump, the first syringe 3
With the second syringe 4, spinning head, the first high voltage power supply 1 and the second high voltage power supply 2, syringe one end connection syringe pump, the other end
Connection spinning head, positive or negative high voltage power supply are added on two spinning heads respectively；The twist system includes controller and rotating disk, control
The polarity of the rotary speed and carbon brush of device control rotating disk；The reel system includes liquid bath 6, pressure roller 8, coiler device 7 and control
Device, controller drive coiler device to rotate and collect nano fibre yarn.Folder between first syringe 3 and the second syringe 4
Angle and apart from adjustable, 0 °～180 ° and 10～500mm of adjustable extent；The spinning head is adjustable with the distance between middle rotating disk 5,
10～500mm of adjustable extent；Between the rotating disk 5 and reception device 7, distance is adjustable, 40～800mm of range of accommodation.
In the production method and process units of the present invention, the first described syringe 3 and the second syringe 4 and corresponding spray
It can also be for a pair multipair that silk head can be, arrangement mode can be able to be straight line or camber line arrangement with difference.
The rotating disk is the horn mouth or hollow or real of the internal metal with carbon brush and the alternate fan-shaped array of insulant
Heart cylinder, carbon brush cause the top half of turntable rotation plane and the latter half all the time with contrary electric polarity, or rotating disk
Plane of rotation left-half and the contrary electric polarity of right half part band, fan-shaped 2～8 for formed objects, disk diameter
50～100mm (being 4 equal portions formula hollow cylinder rotating disks referring to Fig. 2).
The continuous nano-fibre yarn production method and the operation principle and process of device of the present invention be (referring to Fig. 1)：Work
When, first load the polymer solution of the debita spissitudo for preparing on request, syringe in the first syringe 3 and the second syringe 4
One end connects syringe pump, and other end connection spinning head, the angle and distance and spinning head regulated between spinning head are flat to rotating disk
The vertical dimension in face, opens syringe pump, makes polymer solution and is advanced to spinning head with certain speed, on two spinning heads respectively
Plus positive and negative first high voltage power supply 1 and the second high voltage power supply 2, the droplet formation Taylor in the presence of electric field force, at spinning head
Cone, with the increase of voltage, electric field becomes strong, and when drop, because being subject to, electric field force increase reaches critical taylor cone and electric field force continues
Exit flow can be sprayed during increase, slenderizing forms nanofiber in atmosphere, flies to rotating disk 5, and rotating disk 5 is due to the work of brush
With, make the Plane of rotation of rotating disk top half and the latter half all the time with contrary electric polarity, or the Plane of rotation of rotating disk
Left-half and right half part all the time with contrary electric polarity, positively charged nanofiber be attracted to Plane of rotation band bear
Electropolar part, negatively charged nanofiber are attracted to the part of Plane of rotation positively charged polarity, with nanofiber
Deposition, can pull out two bundles of nanofibers, rotating disk 5 is rotated with appropriate speed, two bundles of nanofibers can twisteds exist
Nano fibre yarn is formed together, and the nano fibre yarn for drawing gained is wound up on coiler device 7 by liquid bath 6 and pressure roller 8, pressure roller
8 cause yarn submergence in the solution and controlling tension force makes nano fibre yarn be subject to appropriate drafting force, in liquid and drafting force
Under collective effect, the further drawing-off of nanofiber, nanofiber are further orientated, and the bar of yarn is dry to improve, and mechanical performance is obtained
Improve；Nanofiber constantly flies to rotating disk 5, adjusts the winding speed of coiler device 7, it is possible to obtain the Nanowire of continuous uniform
Dimension yarn.
The specific embodiment of the present invention is given below.The embodiment of the present invention only for explanation concrete grammar, is not constituted to this
The restriction of bright application claim.
Embodiment 1
The present embodiment is related to a kind of production method of Static Spinning continuous nano-fibre yarn and device (referring to Fig. 1).Before spinning,
A certain amount of polyacrylonitrile (PAN, molecular weight are 80000g/mol) is weighed first with dimethylformamide (DMF) with 8% quality
Percent concentration mixes, and stirs at a temperature of 80 DEG C, stands 2h, and PAN solution is obtained.During spinning, will be made PAN molten
Liquid is respectively charged in the first syringe 3 and the second syringe 4 for spinning.Then regulation parameter, makes the angle between two spinning heads
With apart from respectively 80 ° and 160mm, spinning head is 70mm with the vertical dimension of 5 plane of rotating disk, between rotating disk 5 and coiler device 7
Distance is 450mm, and between rotating disk 5 and liquid bath 6, distance is 250mm, pressure roller 8 is housed in liquid bath, 60 DEG C of hot water is filled in liquid bath.
Solution in first syringe 3 and the second syringe 4 is all conveyed to spinning head with the speed of 0.5ml/h, and two spinning heads add respectively
The voltage of upper+8KV and -8KV, under high voltage electric field effect, nanometer jet is ejected, and slenderizing is into nanometer at normal temperatures and pressures
Fiber flies to rotating disk 5, due to the effect of brush, makes the left-half and right half part of the Plane of rotation of rotating disk all the time with contrary
Electric polarity, positively charged nanofiber are attracted to the part of the negatively charged polarity of Plane of rotation, negatively charged nanofiber
The part of Plane of rotation positively charged polarity is attracted to, with the deposition of nanofiber, two bundles of nanofibers can be pulled out,
Rotating disk 5 is rotated with the speed of 900rpm, and two bundles of nanofibers twisteds form nano fibre yarn together, draws nano fibre yarn
Coiler device 7 is arrived by liquid bath 6, pressure roller 8, coiler device 7 is collected with the speed of 2m/min, the nanometer under the drawing-off effect of liquid bath
Fiber is further orientated dry uniform, the few nano fibre yarn of filoplume that obtains bar.
Embodiment 2
The present embodiment is related to a kind of production method of Static Spinning continuous nano-fibre yarn and device (referring to Fig. 3).With enforcement
Liquid bath 6 and pressure roller 8 are eliminated unlike example 1, is directly collected and is wound up into coiler device 7.Before spinning, first weigh a certain amount of poly-
Vinyl alcohol (PVA, molecular weight are 3000g/mol) is with solvent (ethanol is with distilled water with 1: 1 mass than mixed liquor) with 16% matter
Amount percent concentration mixing, stirs at a temperature of 80 DEG C, stands 2h, PVA solution is obtained. during spinning, by made PVA
Solution is respectively charged in the first syringe 3 and the second syringe 4 for spinning.Then regulation parameter, makes the folder between two spinning heads
Respectively 100 ° and 160mm of angle and distance, spinning head are 80mm, rotating disk 5 and coiler device 7 with the vertical dimension of 5 plane of rotating disk
Between distance be 450mm.Solution in second syringe syringe 3 and the second syringe 4 is all with the speed of 0.5ml/h to spray webbing
Head conveying, two spinning heads voltage respectively plus+15KV and -15KV, under high voltage electric field effect, nanometer jet is ejected, normal
Stretching under normal temperature and pressure is refined into nanofiber and flies to rotating disk 5, due to the effect of brush, makes the left side of the Plane of rotation of rotating disk 5
Divide and right half part is all the time with contrary electric electric polarity, positively charged nanofiber is attracted to the negatively charged polarity of Plane of rotation
Part, negatively charged nanofiber is attracted to the part of Plane of rotation positively charged polarity, with the deposition of nanofiber,
Two bundles of nanofibers can be pulled out, rotating disk 5 is rotated with the speed of 600rpm, and two bundles of nanofibers twisteds are formed together
Nano fibre yarn, traction nano fibre yarn are directly wound up into coiler device 7, and coiler device 7 is collected with the speed of 1.5m/min, obtained
To the nano fibre yarn of continuous uniform.
Embodiment 3
The present embodiment is related to a kind of production method of Static Spinning continuous nano-fibre yarn and device (referring to Fig. 4).With enforcement
Through a long filament using 0.5m/min as heart yarn in the middle of rotating disk unlike example 2.Before spinning, a certain amount of poly- third is first weighed
Alkene nitrile (PAN, molecular weight are 80000g/mol) is mixed with 8% mass percent concentration with dimethylformamide (DMF), 80
Stir at a temperature of DEG C, stand 2h, PAN solution is obtained. during spinning, made PAN solution is respectively charged into into the first injection
For spinning in device syringe 3 and the second syringe 4.Then regulation parameter, is respectively angle and distance between two spinning heads
100 ° and 160mm, spinning head is 80mm with the vertical dimension of 5 plane of rotating disk, and between rotating disk 5 and coiler device 7, distance is
450mm.Polypropylene filament yarn of the heart yarn for 300D, the polypropylene filament yarn for unwinding are wound up on coiler device by center of turntable, and third
Synthetic fibre long filament is unwind with the speed of 0.5m/min.Solution in first syringe 3 and the second syringe 4 is all with the speed of 0.5ml/h
Convey to spinning head, two spinning heads voltage respectively just plus+9KV and -9KV, the nanometer jet injection under high voltage electric field effect
Go out, slenderizing flies to rotating disk 5 into nanofiber at normal temperatures and pressures, and rotating disk 5 is rotated with the speed of 900rpm, due to brush
Effect, makes the left-half and right half part of the Plane of rotation of rotating disk 5 all the time with contrary electric polarity, positively charged Nanowire
Dimension is attracted to the part of the negatively charged polarity of Plane of rotation, and negatively charged nanofiber is attracted to Plane of rotation positively charged pole
Property part, with the deposition of nanofiber, triangle twisting area is formed at rotating disk 5 centered on long filament, nanofiber is uniform
Be coated on polypropylene filament yarn surface, 0.5m/min is collected coiler device 7 at a same speed, that is, obtain coating good cladding
Yarn.
Claims (7)
1. a kind of production method of continuous nano-fibre yarn, the production method comprise the steps：
(1) prepare polymer solution：The polymer solution of appropriate mass percent concentration is prepared, polymer and its solvent are existed
It is uniformly mixed under conditions of appropriate, the polymer solution bottling for obtaining preparing after standing 1-2 hours is standby；Described is poly-
Compound refers to polyvinyl alcohol, polyacrylonitrile or polyamide fiber-forming polymer material, or keratin, or two kinds of mixed polymers；
Described solvent includes distilled water, ethanol, formic acid, dimethylformamide or chloroform；The appropriate mass percent concentration is
Assignment system can obtain the mass percent concentration of the solution of nanofiber with electrostatic spinning；The appropriate condition instigates polymer
Temperature, humidity and mixing time condition with its solvent mix homogeneously；
(2) nanometer jet is injected into fibre：Solution in syringe pump pushing syringe forms drop at spinning head, in appropriate electricity
The lower nanometer jet of pressure effect is ejected, and slenderizing flies to rotating disk into nanofiber at normal temperatures and pressures；The appropriate voltage
It is that the electrostatic force for instigating drop to be subject to sprays the voltage to form nanometer jet more than surface tension；The rotating disk is referred to can be with height
Horn mouth, the hollow or solid cylinder of the metal with carbon brush and the alternate fan-shaped array of insulant of speed rotation；
(3) continuous nano-fibre yarn forming：The contrary electric polarity of the top half and the latter half band of the Plane of rotation of rotating disk, or
The contrary electric polarity of the left-half and right half part band of the Plane of rotation of person's rotating disk, the nanofiber with positive and negative charge are moved to
Plane of rotor disc, such as positively charged nanofiber are attracted to the part of the negatively charged polarity of Plane of rotation all the time, conversely, negatively charged
The nanofiber of lotus is attracted to the part of Plane of rotation positively charged polarity all the time, pulls out two bundles of nanofibers, works as rotating disk
Rotated with appropriate speed, two bundles of nanofibers twisteds are adjusted between rotating disk and coiler device into a nano fibre yarn
Vertical dimension, and the velocity of rotation of coiler device, the nano fibre yarn for drawing gained are directly wound up on coiler device or Jing
Cross a liquid bath to be then wound onto on coiler device, and by the bonding effect between fiber itself and the cooling effect of air, make
That what is collected is fiber solidifying into described continuous nano-fibre yarn；Described appropriate rotating speed is to obtain continuous nanofiber
The speed of yarn.
2. the production method of continuous nano-fibre yarn according to claim 1, it is characterised in that described continuous Nanowire
The mode of production of dimension is bipolarity nozzle electrospinning method, and the polymer solution in syringe is respectively transmitted to two by syringe pump
It is arranged in the spinning head of both sides, the spinning head of two kinds of polarity is symmetric arrays or asymmetric geometry, generating positive and negative voltage is carried in respectively
On spinning head, the spinning head quantity of every kind of polarity is single or multiple；Jet arrangement mode with identical polar is
Straight line or camber line.
3. the production method of continuous nano-fibre yarn according to claim 1, it is characterised in that liquid bath can be used, it is described
Liquid bath in equipped with the solution of nanofiber ordered arrangement is helped, the temperature range of solution is 4～100 DEG C.
4. a kind of process units of continuous nano-fibre yarn, the process units are applied to any one of claims 1 to 3
The production method of continuous nano-fibre yarn, mainly including spinning system, twist system and reel system, wherein, the spinning system
System includes syringe pump, syringe, spinning head, high voltage power supply, and syringe one end connection syringe pump, the other end connect spinning head, just
Negative high voltage DC source is added on two spinning heads respectively；The twist system includes controller and rotating disk, and controller control turns
The polarity of the rotary speed and carbon brush of disk；The reel system includes liquid bath, coiler device and controller, and controller drives winding
Device is rotated collects nano fibre yarn.
5. the process units of continuous nano-fibre yarn according to claim 4, it is characterised in that between described spinning head
Angle and apart from adjustable, adjustable extent is respectively 0～180 ° and 10～500mm；The distance between the spinning head and rotating disk
It is adjustable, 10～500mm of adjustable extent；Between the rotating disk and coiler device, distance is adjustable, 40～800mm of range of accommodation.
6. the process units of continuous nano-fibre yarn according to claim 4, it is characterised in that described rotating disk is inside
The horn mouth or cylinder of the metal with carbon brush and the alternate fan-shaped array of insulant, carbon brush cause the upper of turntable rotation plane
Half part and the latter half are all the time with contrary electric polarity, or the left-half and right half part band phase of the Plane of rotation of rotating disk
Anti- electric polarity；Described fan-shaped size is identical, and number is 2～8.
7. the process units of continuous nano-fibre yarn according to claim 4, it is characterised in that install in described liquid bath
The pressure roller of tension force can be adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410266989.0A CN104060355B (en) | 2014-06-12 | 2014-06-12 | Production method and device for continuous nano-fiber yarn |
Applications Claiming Priority (1)
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| CN107268129A (en) * | 2017-07-07 | 2017-10-20 | 河南工程学院 | The preparation method of PVA nano-fibre yams |
| WO2022172297A3 (en) * | 2021-02-14 | 2022-10-06 | Nabi Sina | A triple production apparatus producing nano fiber, nano particles and nano surface, based on centrifugal force mechanism and thumping oscillator |
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