CN104060355A - 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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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, be specially a kind of polarity by brush control rotating disk and form production method and the device that two strands of bundles of nanofibers rotation twisteds are prepared continuous nano-fibre yarn.
Background technology
Electrostatic spinning is the current simple and effective technology of preparing nanofiber.Electro spinning nano fiber has excellent performance, can be applied to filtering material, bio-medical material, and composite reinforcing material, sensor many aspects, prospect is very wide.Due to the unstability restriction of charged jet bend tension, nanofiber is mainly collected with the form of nonwoven fabric, and this unordered structure is restricted in the application aspect of the high orientation texture of needs, therefore, the range of application of preparing the controlled extendible nanofiber of nano fibre yarn of structure, has wide potential using value.
The production method of the continuous nano-fibre yarn that at present, the research institution of countries in the world and manufacturing enterprise are generally used mainly contains mechanical twisting method, air-swirl twisting method, dynamic immersion method, ribbon-like fibre net aggregation method and auxiliary electric field method etc.Wherein, about the bibliographical information of mechanical twisting method mainly contains: " Novel mechanism for spinning continuous twisted composite nanofiber yarns " (Mohamed Basel Bazbouz, European Polymer Journal[J], 2008,44:1-12.), main technique principle is to rely on the copper sheet of placing with certain interval vertical of Electric Machine Control ground connection to collect nanofiber, and a copper sheet is used for twisting, and another is used for winding yarn.The bibliographical information of relevant air-swirl twisting method mainly contains: " Electrospinning of Continuous Aligning Yarns with a ' Funnel ' Target " (Amalina M.Afifi, Macromol.Mater[J] .2010,295:660-665.), the main technique principle of air-swirl twisting method is to utilize hollow hemisphere to rotate to form air-swirl to drive bundles of nanofibers rotation twisting to form continuous nano-fibre yarn.About the bibliographical information of dynamic immersion method mainly contains: " A dynamic liquid support system for continuous electrospun yarn fabrication " (Wee-Eong Teo, Polymer, 2007,48:3400-3405.), dynamically the main technique principle of immersion method be the aperture that utilizes liquid to open from bath bottom flow downward the whirlpool that forms to fiber stretch, boundling, final coiling obtains continuous fiber yarn.About the bibliographical information of ribbon-like fibre net aggregation method mainly contains: world patent WO073442 and WO 073442, the main technique principle of ribbon-like fibre net aggregation method is non-weaving cloth (being cut into band shape) or the band that obtains random arrangement as traditional Static Spinning on the collector of conveyor type, then use twister to form yarn to the certain twist of fibre bundle, stretched roller gathers merging again, is finally wound up on collecting drum.About the bibliographical information of auxiliary electric field method mainly contains: " Manipulation of the electric field of electrospinning system to produce polyacrylonitrile nanofiber yarn " (F.Dabirian, Journal of the Textile Institute[J], 2007,98:237-241.), the main technique principle of auxiliary electric field method is to control to realize aligning of fiber by change electric field correlation stream to reach the object of preparing continuous nano-fibre yarn.
Mechanical twisting method, air-swirl twisting method, dynamically immersion method, ribbon-like fibre net aggregation method and auxiliary electric field method etc. are prepared nanofiber and are all had certain limitation, ubiquity equipment complexity, the problem such as poor continuity, lack of homogeneity and the intensity of yarn are low.
Summary of the invention
For the deficiencies in the prior art, technical problem to be solved by this invention is, a kind of production method and device of nano fibre yarn are provided, and this production method and device can be realized the serialization preparation of nano fibre yarn, and prepared nanofiber twist per unit is even, bar makes a good job of, filoplume is few, and mechanical performance is good, and device is simple, easy to operate, industrialization promotion is easy.
The technical scheme that the present invention solves described process units technical problem is: the process units that designs a kind of nano fibre yarn, this process units is applicable to the production method of nano fibre yarn of the present invention, mainly comprises spinning system, twist system and reel system.Wherein, described spinning system comprises syringe pump, syringe, spinning head, high voltage source, and syringe one end connects syringe pump, and the other end connects spinning head, and positive or negative high voltage power supply is added in respectively on two spinning heads; Described twist system comprises controller and rotating disk, the rotary speed of controller control rotating disk and the polarity of carbon brush; Described reel system comprises liquid bath, coiler device and controller, and controller drives coiler device to rotate and collects nano fibre yarn.
The production method of continuous nano-fibre yarn of the present invention, the mode of production that it is characterized in that described continuous nano-fibre is bipolarity nozzle electrospinning method, the polymer solution in syringe is sent to respectively two spinning heads that are arranged in both sides by syringe pump, the spinning head of two kinds of polarity can 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 can be single can be also multiple.Be straight line or camber line with the spinning head arrangement mode of identical polar.
The production method of continuous nano-fibre yarn of the present invention, is characterized in that described polymer can be the fiber-forming polymer materials such as polyvinyl alcohol, polyacrylonitrile or polyamide, can be also natural material as keratin etc., or two kinds of mixed polymers.
The production method of continuous nano-fibre yarn of the present invention, it is characterized in that described continuous nano-fibre yarn can direct winfing to coiler device, also can first then be wound up on coiler device through liquid bath.
The production method of continuous nano-fibre yarn of the present invention, is characterized in that using liquid bath, fills the solution that water or other contribute to nanofiber ordered arrangement in described liquid bath, and the temperature range of solution is 4～100 DEG C.
The process units of a kind of continuous nano-fibre yarn of the present invention, this process units is applicable to the production method of the continuous nano-fibre yarn described in any one in claim 1～4, mainly comprise spinning system, twist system and reel system, wherein, described spinning system comprises syringe pump, syringe, spinning head, high voltage source, syringe one end connects syringe pump, and the other end connects spinning head, and positive or negative high voltage dc source is added in respectively on two spinning heads; Described twist system comprises controller and rotating disk, the rotary speed of controller control rotating disk and the polarity of carbon brush; Described reel system comprises liquid bath, coiler device and controller, and controller drives coiler device to rotate and collects nano fibre yarn.
The process units of continuous nano-fibre yarn of the present invention, is characterized in that angle and the distance between described spinning head is adjustable, and adjustable range is respectively 0 °～180 ° and 10～500mm; Distance between described spinning head and rotating disk is adjustable, adjustable range 10～500mm; Between described rotating disk and coiler device, distance is adjustable, adjustable range 40～800mm.
The process units of continuous nano-fibre yarn of the present invention, it is characterized in that described rotating disk is the metal of inside with carbon brush and horn mouth or the cylinder of the alternate fan-shaped array of insulating materials, carbon brush makes the first half of turntable rotation plane and the latter half all the time with contrary electric polarity, or the left-half of the Plane of rotation of the rotating disk electric polarity contrary with right half part band.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 characterized in that installing in described liquid bath can adjustment of tonicity pressure roller.
The technical scheme that the present invention solves described production method technical problem is: design a kind of production method of nano fibre yarn, this production method comprises following processing step:
(1) prepare polymer solution: prepare the polymer solution of suitable mass percent concentration, polymer and solvent thereof are uniformly mixed under suitable condition, leave standstill the polymer solution bottling that obtains preparing after 1-2 hour for subsequent use; Described polymer refers to the fiber-forming polymer materials such as polyvinyl alcohol, polyacrylonitrile or polyamide, can be also natural material as keratin etc., or two kinds of mixed polymers; Described solvent comprises distilled water, ethanol, formic acid, dimethyl formamide or chloroform etc.; Described suitable mass percent concentration refers to that preparation can electrostatic spinning obtains the mass percent concentration of the solution of nanofiber; Described suitable condition is instigated the condition such as polymer and the uniform temperature of its solvent, humidity and mixing time.
(2) nanometer jet sprays fibroblast: the solution in syringe pump pushing syringe forms drop at spinning head place, under suitable voltage effect, nanometer jet ejects, and slenderizing becomes nanofiber to fly to rotating disk at normal temperatures and pressures; Described suitable voltage is to instigate the electrostatic force that drop is subject to be greater than surface tension and to spray the voltage that forms nanometer jet; Described rotating disk refers to can the metal with carbon brush of High Rotation Speed and the loudspeaker of the alternate fan-shaped array of insulating materials, hollow or solid cylinder.
(3) continuous nano-fibre yarn forming: the electric polarity that the first half of the Plane of rotation of rotating disk is contrary with the latter half band, or the electric polarity that the left-half of the Plane of rotation of rotating disk is contrary with right half part band, nanofiber with positive and negative charge moves to plane of rotor disc, as positively charged nanofiber attracted to the part of the electronegative polarity of Plane of rotation all the time, on the contrary, electronegative nanofiber attracted to the part of Plane of rotation positively charged polarity all the time, pull out two bundles of nanofibers, when rotating disk is with suitable speed rotation, two bundles of nanofibers twisteds become a nano fibre yarn, adjust the vertical range between rotating disk and coiler device, and the velocity of rotation of coiler device, then the nano fibre yarn direct winfing of traction gained is wound up on coiler device to coiler device or through a liquid bath, and rely on bonding effect between fiber self and the cooling effect of air, make the fiber of collecting be solidified into described continuous nano-fibre yarn.Described suitable rotating speed is the speed that can obtain continuous nano fibre yarn.
Compared with prior art, the present invention forms by the polarity of brush control rotating disk production method and the device that two bundles of nanofibers rotation twisteds are prepared continuous nano-fibre yarn, can realize the serialization preparation of nano fibre yarn, two bundles of nanofibers twisteds are become nano fibre yarn by rotation by rotating disk, and the mechanical performance of yarn is improved; Through liquid, drawing-off is further orientated nanofiber to yarn, improves the bar evenness of nano-fibre yams, reduces filoplume, and mechanical performance further improves; This process units manufacture is simple, easy to operate, and industrializing implementation is easy.
Brief description of the drawings
Fig. 1 is the structural representation (brush control plane of rotor disc left-half and right half part oppositely charged) that the present invention prepares electrostatic spinning nano fiber yarn;
Fig. 2 is that rotating disk of the present invention is the structural representation of 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 cladded yarn;
In figure: 1. high voltage source, 2. high voltage source, 3. syringe, 4. syringe, 5. rotating disk, 6. liquid bath, 7. coiler device, 8. pressure roller.
Detailed description of the invention
Further set forth the present invention below in conjunction with embodiment and accompanying drawing thereof.
The present invention designs a kind of production method and device (referring to Fig. 1) of nano fibre yarn, and this production method comprises following processing step:
(1) prepare polymer solution: prepare the polymer solution of suitable mass percent concentration, polymer and solvent thereof are uniformly mixed under suitable condition, leave standstill the polymer solution that obtains preparing after 1-2 hour and pack syringe 3 and 4 into; Described polymer refers to the fiber-forming polymer materials such as polyvinyl alcohol, polyacrylonitrile or polyamide, can be also natural material as keratin etc., or two kinds of mixed polymers; Described solvent comprises distilled water, ethanol, formic acid, dimethyl formamide or chloroform etc.; Described suitable mass percent concentration refers to that preparation can electrostatic spinning obtains the mass percent concentration of the solution of nanofiber; Described suitable condition is instigated the condition such as polymer and the uniform temperature of its solvent, humidity and mixing time.
(2) nanometer jet sprays fibroblast: the solution in syringe pump pushing syringe 3 and 4 forms drop at spinning head place, under suitable voltage effect, nanometer jet ejects, and slenderizing becomes nanofiber to fly to rotating disk 5 at normal temperatures and pressures; Described suitable voltage is to instigate electrostatic force that drop is subject to be greater than surface tension to spray the voltage that forms nanometer jet.
(3) continuous nano-fibre yarn forming: the electric polarity that the left-half of the Plane of rotation of rotating disk 5 is contrary with right half part band, move to after plane of rotor disc with the nanofiber of positive and negative charge, positively charged nanofiber attracted to the part of the electronegative polarity of Plane of rotation all the time, on the contrary, electronegative nanofiber attracted to the part of the positively charged polarity of Plane of rotation all the time, pull out two bundles of nanofibers, when rotating disk 5 is with suitable speed rotation, two bundles of nanofibers twisteds become a nano fibre yarn, adjust the vertical range between rotating disk 5 and coiler device 7, and the velocity of rotation of coiler device 7, the nano fibre yarn of traction gained can direct winfing to coiler device 7, also can then be wound up on coiler device 7 through liquid bath 6 and pressure roller 8, and rely on bonding effect between fiber self and the cooling effect of air, make the fiber of collecting be solidified into described continuous nano-fibre yarn.Described suitable rotating speed is the speed that can obtain continuous nano fibre yarn.
Described in the present invention suitably mass percent concentration main with high molecular polymer used and molecular weight thereof with select the kind of solvent relevant, for example, when described polymer is selected polyvinyl alcohol, in the mixed solvent of the ratio that is 1: 1 at the mass ratio of water and ethanol, dissolve, when mass percent solubility reach 12% and more than, can meet described technological requirement, in other words, for polyacrylonitrile (molecular weight is 80000g/mol), the suitable mass percent concentration in dimethyl formamide should be >=6%.
Suitable voltage described in the present invention is to instigate electrostatic force that drop is subject in electric field to be greater than surface tension to spray voltage required while forming nanometer jet, for example, described solution is that (solvent is water and ethanol to 14% poly-vinyl alcohol solution, mass ratio is 1: 1) time, suitable voltage should reach 12kV and more than.
The present invention is according to described production method, designed a kind of process units (referring to Fig. 1) of Static Spinning continuous nano-fibre yarn simultaneously, comprise spinning system, twist system and reel system, described spinning system comprises syringe pump, syringe 3 and 4, spinning head, high voltage source 1 and 2, syringe one end connects syringe pump, the other end connects spinning head, and positive or negative high voltage power supply is added in respectively on two spinning heads; Described twist system comprises controller and rotating disk, the rotary speed of controller control rotating disk and the polarity of carbon brush; Described reel system comprises liquid bath 6, pressure roller 8, coiler device 7 and controller, and controller drives coiler device to rotate and collects nano fibre yarn.Angle between described syringe 3 and 4 and distance are adjustable, 0 °～180 ° of adjustable ranges and 10～500mm; Distance between described spinning head and middle rotating disk 5 is adjustable, adjustable range 10～500mm; Between described rotating disk 5 and receiving system 7, distance is adjustable, adjustable range 40～800mm.
In production method of the present invention and process units, described syringe 3 and 4 and corresponding spinning head can be a pair of can be also multipair, arrangement mode can be different, can be that straight line or camber line are arranged.
Described rotating disk is the metal of inside with carbon brush and horn mouth or the hollow or solid cylinder of the alternate fan-shaped array of insulating materials, carbon brush makes the first half of turntable rotation plane and the latter half all the time with contrary electric polarity, or the electric polarity that the left-half of the Plane of rotation of rotating disk is contrary with right half part band, fan-shaped is 2～8 of formed objects, and disk diameter is 50～100mm (being 4 equal portions formula hollow cylinder rotating disks referring to Fig. 2).
Operation principle and the process of continuous nano-fibre yarn production method of the present invention and device are (referring to Fig. 1): when work, first in syringe 3 and 4, pack the polymer solution of the debita spissitudo preparing on request into, syringe one end connects syringe pump, the other end connects spinning head, regulate angle between spinning head and distance and the spinning head vertical range to plane of rotor disc, open syringe pump, polymer solution is advanced to spinning head with certain speed, on two spinning heads, add respectively positive or negative high voltage power supply 1 and 2, under the effect of electric field force, the drop at spinning head place forms taylor cone, along with the increase of voltage, electric field grow, when drop is because being subject to when electric field force increase reaches critical taylor cone and electric field force continuation increase ejecting jet, in air, slenderizing forms nanofiber, fly to rotating disk 5, rotating disk 5 is due to the effect of brush, make the first half of Plane of rotation of rotating disk and the latter half all the time with contrary electric polarity, or the left-half of the Plane of rotation of rotating disk and right half part are all the time with contrary electric polarity, positively charged nanofiber attracted to the part of the electronegative polarity of Plane of rotation, electronegative nanofiber attracted to the part of Plane of rotation positively charged polarity, along with the deposition of nanofiber, can pull out two bundles of nanofibers, rotating disk 5 is with suitable speed rotation, two bundles of nanofibers can form nano fibre yarn by twisted together, the nano fibre yarn of traction gained is wound up on coiler device 7 by liquid bath 6 and pressure roller 8, pressure roller 8 makes yarn be immersed in solution and controls tension force to make nano fibre yarn be subject to suitable drafting force, under the acting in conjunction of liquid and drafting force, the further drawing-off of nanofiber, nanofiber is further orientated, dry the improving of bar of yarn, mechanical performance is improved, nanofiber constantly flies to rotating disk 5, adjusts the winding speed of coiler device 7, just can obtain the nano fibre yarn of continuous uniform.
Provide specific embodiments of the invention below.The embodiment of the present invention only, for explanation concrete grammar, does not form the restriction to the present patent application claim.
Embodiment 1
The present embodiment relates to a kind of production method and device (referring to Fig. 1) of Static Spinning continuous nano-fibre yarn.Before spinning, first take a certain amount of polyacrylonitrile (PAN, molecular weight is 80000g/mol) and mix with 8% mass percent concentration with dimethyl formamide (DMF), at the temperature of 80 DEG C, stir, leave standstill 2h, make PAN solution.When spinning, made PAN solution is respectively charged in syringe 3 and 4 for spinning.Then regulate parameter, make angle and distance between two spinning heads be respectively 80 ° and 160mm, the vertical range of spinning head and rotating disk 5 planes is 70mm, between rotating disk 5 and coiler device 7, distance is 450mm, between rotating disk 5 and liquid bath 6, distance is 250mm, pressure roller 8 is housed in liquid bath, in liquid bath, fills the hot water of 60 DEG C.Solution in syringe 3 and 4 is all carried to spinning head with the speed of 0.5ml/h, add respectively+8KV of two spinning heads and-voltage of 8KV, under high voltage electric field effect, nanometer jet ejects, slenderizing becomes nanofiber to fly to rotating disk 5 at normal temperatures and pressures, due to the effect of brush, make the left-half of Plane of rotation of rotating disk and right half part all the time with contrary electric polarity, positively charged nanofiber attracted to the part of the electronegative polarity of Plane of rotation, electronegative nanofiber attracted to the part of Plane of rotation positively charged polarity, along with the deposition of nanofiber, can pull out two bundles of nanofibers, rotating disk 5 is with the speed rotation of 900rpm, two bundles of nanofibers twisteds form nano fibre yarn together, traction nano fibre yarn is by liquid bath 6, pressure roller 8 is to coiler device 7, coiler device 7 is collected with the speed of 2m/min, under the drawing-off effect of liquid bath nanofiber further orientation to obtain bar evenly dry, the nano fibre yarn that filoplume is few.
Embodiment 2
The present embodiment relates to a kind of production method and device (referring to Fig. 3) of Static Spinning continuous nano-fibre yarn.Cancel as different from Example 1 liquid bath 6 and pressure roller 8, directly collected and be wound up into coiler device 7.Before spinning, first take a certain amount of polyvinyl alcohol (PVA, molecular weight is 3000g/mol) mix with 16% mass percent concentration with solvent (ethanol with distilled water with 1: 1 quality than mixed liquor), at the temperature of 80 DEG C, stir, leave standstill 2h, make PVA solution. when spinning, made PVA solution is respectively charged in syringe 3 and 4 for spinning.Then regulate parameter, make angle and distance between two spinning heads be respectively 100 ° and 160mm, the vertical range of spinning head and rotating disk 5 planes is 80mm, and between rotating disk 5 and coiler device 7, distance is 450mm.Solution in syringe 3 and 4 is all carried to spinning head with the speed of 0.5ml/h, add respectively+15KV of two spinning heads and-voltage of 15KV, under high voltage electric field effect, nanometer jet ejects, slenderizing becomes nanofiber to fly to rotating disk 5 at normal temperatures and pressures, due to the effect of brush, make the left-half of Plane of rotation of rotating disk 5 and right half part all the time with contrary electric electric polarity, positively charged nanofiber attracted to the part of the electronegative polarity of Plane of rotation, electronegative nanofiber attracted to the part of Plane of rotation positively charged polarity, along with the deposition of nanofiber, can pull out two bundles of nanofibers, rotating disk 5 is with the speed rotation of 600rpm, two bundles of nanofibers twisteds form nano fibre yarn together, traction nano fibre yarn direct winfing is to coiler device 7, coiler device 7 is collected with the speed of 1.5m/min, obtain the nano fibre yarn of continuous uniform.
Embodiment 3
The present embodiment relates to a kind of production method and device (referring to Fig. 4) of Static Spinning continuous nano-fibre yarn.In the middle of rotating disk, pass as different from Example 2 a long filament using 0.5m/min as heart yarn.Before spinning, first take a certain amount of polyacrylonitrile (PAN, molecular weight is 80000g/mol) mix with 8% mass percent concentration with dimethyl formamide (DMF), at the temperature of 80 DEG C, stir, leave standstill 2h, make PAN solution. when spinning, made PAN solution is respectively charged in syringe 3 and 4 for spinning.Then regulate parameter, make angle and distance between two spinning heads be respectively 100 ° and 160mm, the vertical range of spinning head and rotating disk 5 planes is 80mm, and between rotating disk 5 and coiler device 7, distance is 450mm.Heart yarn is the polypropylene filament yarn of 300D, and the polypropylene filament yarn that unwinding is got off is wound up on coiler device by center of turntable, and polypropylene filament yarn is with the speed unwinding of 0.5m/min.Solution in syringe 3 and 4 is all carried to spinning head with the speed of 0.5ml/h, just add respectively+9KV of two spinning heads and-voltage of 9KV, under high voltage electric field effect, nanometer jet ejects, slenderizing becomes nanofiber to fly to rotating disk 5 at normal temperatures and pressures, rotating disk 5 is with the speed rotation of 900rpm, due to the effect of brush, make the left-half of Plane of rotation of rotating disk 5 and right half part all the time with contrary electric polarity, positively charged nanofiber attracted to the part of the electronegative polarity of Plane of rotation, electronegative nanofiber attracted to the part of Plane of rotation positively charged polarity, along with the deposition of nanofiber, centered by sentencing long filament, rotating disk 5 forms triangle twisting area, nanofiber is coated on polypropylene filament yarn surface equably, coiler device 7 is collected with same speed 0.5m/min, obtain coated good wrap yarn.
Claims (9)
1. a production method for continuous nano-fibre yarn, this production method comprises the steps:
(1) prepare polymer solution: prepare the polymer solution of suitable mass percent concentration, polymer and solvent thereof are uniformly mixed under suitable condition, leave standstill the polymer solution bottling that obtains preparing after 1-2 hour for subsequent use; Described polymer refers to the fiber-forming polymer materials such as polyvinyl alcohol, polyacrylonitrile or polyamide, can be also natural material as keratin etc., or two kinds of mixed polymers; Described solvent comprises distilled water, ethanol, formic acid, dimethyl formamide or chloroform etc.; Described suitable mass percent concentration refers to that preparation can electrostatic spinning obtains the mass percent concentration of the solution of nanofiber; Described suitable condition is instigated the condition such as polymer and the uniform temperature of its solvent, humidity and mixing time;
(2) nanometer jet sprays fibroblast: the solution in syringe pump pushing syringe forms drop at spinning head place, under suitable voltage effect, nanometer jet ejects, and slenderizing becomes nanofiber to fly to rotating disk at normal temperatures and pressures; Described suitable voltage is to instigate the electrostatic force that drop is subject to be greater than surface tension and to spray the voltage that forms nanometer jet; Described rotating disk refers to can the metal with carbon brush of High Rotation Speed and the horn mouth of the alternate fan-shaped array of insulating materials, hollow or solid cylinder;
(3) continuous nano-fibre yarn forming: the electric polarity that the first half of the Plane of rotation of rotating disk is contrary with the latter half band, or the electric polarity that the left-half of the Plane of rotation of rotating disk is contrary with right half part band, nanofiber with positive and negative charge moves to plane of rotor disc, as positively charged nanofiber attracted to the part of the electronegative polarity of Plane of rotation all the time, on the contrary, electronegative nanofiber attracted to the part of Plane of rotation positively charged polarity all the time, pull out two bundles of nanofibers, when rotating disk is with suitable speed rotation, two bundles of nanofibers twisteds become a nano fibre yarn, adjust the vertical range between rotating disk and coiler device, and the velocity of rotation of coiler device, then the nano fibre yarn direct winfing of traction gained is wound up on coiler device to coiler device or through a liquid bath, and rely on bonding effect between fiber self and the cooling effect of air, make the fiber of collecting be solidified into described continuous nano-fibre yarn.Described suitable rotating speed is the speed that can obtain continuous nano fibre yarn.
2. the production method of continuous nano-fibre yarn according to claim 1, the mode of production that it is characterized in that described continuous nano-fibre is bipolarity nozzle electrospinning method, the polymer solution in syringe is sent to respectively two spinning heads that are arranged in both sides by syringe pump, the spinning head of two kinds of polarity can 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 can be single can be also multiple; Be straight line or camber line with the spinning head arrangement mode of identical polar.
3. the production method of continuous nano-fibre yarn according to claim 1, it is characterized in that described polymer can be the fiber-forming polymer materials such as polyvinyl alcohol, polyacrylonitrile or polyamide, also can be natural material as keratin etc., or two kinds of mixed polymers.
4. the production method of continuous nano-fibre yarn according to claim 1, it is characterized in that described continuous nano-fibre yarn can direct winfing to coiler device, also can first then be wound up on coiler device through liquid bath.
5. the production method of continuous nano-fibre yarn according to claim 1, is characterized in that using liquid bath, fills the solution that water or other contribute to nanofiber ordered arrangement in described liquid bath, and the temperature range of solution is 4～100 DEG C.
6. the process units of a continuous nano-fibre yarn, this process units is applicable to the production method of the continuous nano-fibre yarn described in any one in claim 1～4, mainly comprise spinning system, twist system and reel system, wherein, described spinning system comprises syringe pump, syringe, spinning head, high voltage source, syringe one end connects syringe pump, and the other end connects spinning head, and positive or negative high voltage dc source is added in respectively on two spinning heads; Described twist system comprises controller and rotating disk, the rotary speed of controller control rotating disk and the polarity of carbon brush; Described reel system comprises liquid bath, coiler device and controller, and controller drives coiler device to rotate and collects nano fibre yarn.
7. the process units of continuous nano-fibre yarn according to claim 5, is characterized in that angle and the distance between described spinning head is adjustable, and adjustable range is respectively 0～180 ° and 10～500mm; Distance between described spinning head and rotating disk is adjustable, adjustable range 10～500mm; Between described rotating disk and coiler device, distance is adjustable, adjustable range 40～800mm.
8. the process units of continuous nano-fibre yarn according to claim 5, it is characterized in that described rotating disk is the metal of inside with carbon brush and horn mouth or the cylinder of the alternate fan-shaped array of insulating materials, carbon brush makes the first half of turntable rotation plane and the latter half all the time with contrary electric polarity, or the left-half of the Plane of rotation of the rotating disk electric polarity contrary with right half part band; Described fan-shaped size is identical, and number is 2～8.
9. the process units of continuous nano-fibre yarn according to claim 5, it is characterized in that installing in described liquid bath can adjustment of tonicity pressure roller.
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| CN105297152A (en) * | 2015-09-18 | 2016-02-03 | 东华大学 | Continuous twisting device improving strength of nanofiber yarn |
| CN105839201A (en) * | 2015-01-14 | 2016-08-10 | 上海工程技术大学 | Novel feeding type nano-scale electrostatic ring spinning method |
| CN106222763A (en) * | 2016-09-13 | 2016-12-14 | 浙江大学 | A kind of electrostatic spinning apparatus preparing spiral micro nanometer fiber continuously and method thereof |
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| CN111139564A (en) * | 2020-02-28 | 2020-05-12 | 科凯(南通)生命科学有限公司 | Equipment for preparing heart valve suture line |
| CN111358061A (en) * | 2020-04-26 | 2020-07-03 | 安徽农业大学 | Moisture-absorbing and heating uterus-warming underpants and preparation method thereof |
| CN112359443A (en) * | 2020-11-16 | 2021-02-12 | 绿纳科技有限责任公司 | Preparation method of continuous carbon nanofiber bundle and preparation method of continuous carbon nanofiber cloth |
| CN113969446A (en) * | 2021-10-27 | 2022-01-25 | 嘉兴学院 | Preparation method of functional yarn |
| CN113981552A (en) * | 2021-11-19 | 2022-01-28 | 嘉兴学院 | Preparation method of elastic nanofiber yarn |
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