CN109881268A - A kind of screw type electrostatic spinning nozzle that spinning solution curvature is controllable and its application method - Google Patents
A kind of screw type electrostatic spinning nozzle that spinning solution curvature is controllable and its application method Download PDFInfo
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- CN109881268A CN109881268A CN201910217391.5A CN201910217391A CN109881268A CN 109881268 A CN109881268 A CN 109881268A CN 201910217391 A CN201910217391 A CN 201910217391A CN 109881268 A CN109881268 A CN 109881268A
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Abstract
The present invention relates to a kind of screw type electrostatic spinning nozzle that spinning solution curvature is controllable and its application method, the controllable screw type electrostatic spinning nozzle of spinning solution curvature includes spiral spinning cutter head and the spiral grooves casing that is mounted on cutter head.Spiral spinning cutter head by profile is helix, the conveyor screw that section is triangle and cylindrical center axis form；Spiral grooves casing by the helix that profile is spiral spinning cutter head, section be supreme bottom do not close isosceles trapezoid ring and cylindrical center axis forms, the two concentric arrangement.The present invention uses material the spinning solution curvature of spiral textile silk bit interface can be made not occur significantly to fluctuate for the spiral grooves casing of polytetrafluoroethylene (PTFE), while not generating interference to spinning nozzle electric field again.The technology can stablize spinning solution free surface on the basis of not electric interfering field regulates and controls, and regulate and control spinning solution curvature, reduce solvent volatilization, realize the batch preparation of narrow ditribution sub-micron fibers, nanofiber.
Description
Technical field
The invention belongs to nanofiber and technical field of textile machine, in particular to a kind of spiral that spinning solution curvature is controllable
Type electrostatic spinning nozzle and its application method.
Background technique
When polymer fiber diameter is down to submicron-scale or nanoscale from micro-meter scale, just will appear a series of
Surprised characteristic.Such as very big volumetric surface area, the volumetric surface area of nanofiber is substantially the 1000 of micrometer fibers
Times；It can neatly carry out surface-functionalized；Superior effect and mechanicalness are shown compared with other known materials forms
Can, such as surface and interfacial effect, small-size effect, quantum size effect and quantum tunneling effect and rigidity, tensile strength.This
A little outstanding performances make nanofiber become the preferred material of many important applications, pass in high efficiency filter, bio-medical, intelligence
The fields such as sense are with development potential.Comprehensively consider operation possibility, stably and controllable property (including fibre diameter and its distribution), processing
Material ranges, processing time-consuming etc., electrostatic spinning processing technology, which just becomes currently the only one kind, can manufacture continuous polymer nano
The method of rice fiber.With the rise and fast development of nanometer material science, using Advance in Manufacture of Nano-fibers by Electrospinning at
For the research hotspot of science of engineering materials circle.
Traditional single needle electrostatic spinning apparatus is relatively simple, is mainly by high voltage power supply, liquid-supplying system and collection
Three parts of uniting composition.Liquid-supplying system includes micro-injection pump, medical needle tubing and flat mouth metal needle, and high polymeric solution flow is by micro-
Syringe pump control is measured, the anode of high voltage power supply is connect with flat mouth metal needle, and collection system is metal plate and is grounded.High-voltage electricity
Source voltage is gradually increased, and the drop of metal needle gradually forms taylor cone, when high-voltage power voltage further increases, electric field force meeting
The effects of overcoming surface tension, the viscous force of high polymeric solution forms small straight jet then and will appear the dynamic phenomenon arrival of whip
Grounded metal collecting board, in this process, solvent volatilization, high polymer are formed by curing nanofibres deposit in metal collection plate
On.
The nanofiber yield that traditional electrostatic spinning apparatus obtains is very low, is difficult to meet nanofiber when widely applying
Demand, single needle electrostatic spinning apparatus there is also syringe needle be easy blocking the problem of, this can seriously affect nanofiber spinning
Process is gone on smoothly.
Current Electrospun nano-fibers mass preparation facilities has some reports both at home and abroad.Chinese patent
200710036447.4 disclose a kind of jet type electrostatic spinning equipment, and the device is by being passed through gas in height in liquid bath bottom
Polymers free surface forms bubble, and bubble forms taylor cone and more jet streams under electric field force effect to improve nanofiber yield,
But there are many different bubble fragments of shape size to be stretched by electric field force while bubble formation taylor cone in mechanism ruptures, and makes
At the diameter wider distribution of fiber.And biggish high polymer free surface solvent highly volatile, spinning direction are limited；It is Chinese special
Benefit 201310032194.9 discloses a kind of umbrella-shaped electrostatic spinning sprayer and electrostatic spinning method, and this method may be implemented to receive
The mass preparation of rice fiber, but the solution Free Surface of umbrella shower nozzle is contacted with atmospheric environment, solvent highly volatile, thus meeting
The stability of spinning and the quality of final nanofiber are influenced, and free surface edge solution curvature can not regulate and control；China
Patent 201510278266.7 discloses a kind of jet auxiliary Multi needle electrostatic spinning apparatus, when which can be improved unit
The yield of interior nanofiber, spinning direction is unrestricted, but there are the susceptible to plugging disadvantages of syringe needle, meanwhile, the arrangement side of syringe needle
Formula will be in view of influencing each other between electric field after application high-pressure electrostatic, so the design of Multi needle electrostatic spinning apparatus is more numerous
It is trivial and complicated, it is difficult to realize the controllable nanofiber product of mass production distribution of fiber diameters.Existing patent, which also discloses, is
The spiral shape spray head being immersed in spinning solution is arranged, these spray heads are to the spinning solution curvature of wire vent point without constraint, fibre diameter controlling
It is bad.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of screw type electrostatic spinning nozzle that spinning solution curvature is controllable,
The equipment and application method of this spray head are installed, solve current spiral immersion liquid type nozzle surface spinning solution pattern without constraint,
Jet stream motion path is unstable in spinning process, and spinning solution free surface to be spun is excessive, and spinning solution solvent to be spun is volatile to ask
Topic, while realizing electric field and the regulation of the Precise spraying of spinning solution curvature during electrostatic spinning, realization narrow ditribution sub-micron fibers,
Nanofiber is prepared on a large scale.
The present invention be solve its technical problem used technical solution be:
A kind of screw type electrostatic spinning nozzle that spinning solution curvature is controllable, including spiral spinning cutter head and it is fixedly mounted on spiral shell
Revolve the spiral grooves casing on spinning cutter head.
Further, spiral spinning cutter head is helix by profile, and section is the conveyor screw and cylindrical center axis of triangle
Composition；The diameter of profile helical thread is 80-500mm, screw pitch 10-100mm；Section of outline triangle is isosceles triangle, bottom
For 20-100mm, a height of 40-200mm；Profile is helix, section be triangle conveyor screw at triangle two base angle spiral shell
There is 5-10mm fillet at spin line.
Further, spiral spinning cutter head material is metallic copper.
Further, spiral grooves casing is the helix of spiral spinning cutter head by profile, and section is not closing for supreme bottom
Isosceles trapezoid ring and cylindrical center axis composition, spiral grooves casing and spiral spinning cutter head concentric arrangement；Spiral grooves casing
There is 5-10mm smooth fillet on top；Spiral grooves casing and spiral spinning cutter head form the narrow-gap channel of 0-10mm wide.
Further, spiral grooves casing material is polytetrafluoroethylene (PTFE).
Further, a method of electrostatic spinning being carried out using the controllable screw type electrostatic spinning nozzle of spinning solution curvature,
It mainly comprises the steps that
1) metal cylinder roller is grounded or is connected with high pressure generator cathode, spiral spinning cutter head and high pressure generator are just
Extremely it is connected, adjusts the distance of metal cylinder roller and the controllable screw type electrostatic spinning nozzle of spinning solution curvature；
2) driving motor of metal cylinder roller is opened, and the revolving speed of metal cylinder roller is set；
3) in spinning liquid bath and its turn is arranged in the controllable screw type electrostatic spinning nozzle lower submerged of spinning solution curvature
Speed, spinning liquid bath contain high polymer spinning solution；
4) high pressure generator switch is opened, is slowly increased voltage to required spinning voltage；
5) a large amount of jet streams generate on the spinning solution surface of top spiral spinning cutter head；
6) jet stream flies to metal cylinder roller, solvent volatilization under high voltage electrostatic field, and jet stream stretches solidification and is deposited on
A large amount of nanofibers are formed on metal cylinder roller.
Further, reception device includes metal rotation roller and the adjustable speed motor for driving its rotation, rotating metallic rotation
Diameter of cylinder is 80mm-1200mm, and adjustable speed motor revolving speed is 0-100r/min.
Further, the angular speed of the controllable screw type electrostatic spinning nozzle rotation of spinning solution curvature is 0-15r/min.
Further, high pressure generator voltage regulation limits are 0-100KV.
The beneficial effects of the present invention are: use material to make spiral spinning cutter head for the spiral grooves casing of polytetrafluoroethylene (PTFE)
The spinning solution curvature on surface does not occur significantly to fluctuate, while not generating interference to spinning nozzle electric field again.This is technically simple easy,
It can stablize spinning solution free surface on the basis of not electric interfering field regulates and controls, regulate and control spinning solution curvature, reduce solvent and wave
Hair realizes the batch preparation of narrow ditribution sub-micron fibers, nanofiber.
Detailed description of the invention
Fig. 1 is the controllable screw type electrostatic spinning nozzle spinning schematic diagram of spinning solution curvature.
Fig. 2 is spiral spinning cutter head schematic diagram.
Fig. 3 is spiral grooves casing schematic diagram.
Fig. 4 is the controllable screw type electrostatic spinning nozzle schematic diagram of spinning solution curvature.
Fig. 5 is the controllable screw type electrostatic spinning nozzle schematic cross-section of spinning solution curvature.
1, high pressure generator, 2, spinning liquid bath, 3, jet stream, 4, motor, 5, metal rotation roller, 6, nanofiber, 7,
Ground, 8, spiral spinning cutter head, 9, spiral grooves casing, 10, high polymer spinning solution, 11, spinning solution surface.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is described in further detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention,
It is not intended to limit the present invention.
As shown in Fig. 2,3,4,5, a kind of screw type electrostatic spinning nozzle that spinning solution curvature is controllable, including spiral spinning knife
First 8 and spiral grooves casing 9；Spiral spinning cutter head 8 by profile be helix, section be triangle conveyor screw and it is cylindric in
Mandrel composition；The diameter of profile helical thread is 80-500mm, screw pitch 10-100mm；Section of outline triangle is isoceles triangle
Shape, bottom 20-100mm, a height of 40-200mm；Profile is helix, section be triangle conveyor screw at triangle two bottom
There is 5-10mm fillet at the helix of angle.Spiral grooves casing 9 is the helix of spiral spinning cutter head 8 by profile, and section is nothing
Isosceles trapezoid ring and cylindrical center axis composition are not closed in upper bottom, spiral grooves casing 9 with spiral spinning cutter head 8 is concentric matches
It sets；There is 5-10mm smooth fillet on 9 top of spiral grooves casing；Spiral grooves casing 9 and spiral spinning cutter head 8 form 0-10mm
Wide narrow-gap channel.
8 material of spiral spinning cutter head is metallic copper, and 9 material of spiral grooves casing is polytetrafluoroethylene (PTFE), spiral grooves casing 9
It is fixedly mounted on spiral spinning cutter head 8 and constitutes the controllable screw type electrostatic spinning nozzle of spinning solution curvature.
As shown in Figure 1, mainly including when carrying out electrostatic spinning with the controllable screw type electrostatic spinning nozzle of spinning solution curvature
Following steps:
1) it is connected by the ground connection of metal cylinder roller 57 or with 1 cathode of high pressure generator, spiral spinning cutter head 8 and high pressure occur
The anode of device 1 is connected, and adjusts the distance of metal cylinder roller 5 and the controllable screw type electrostatic spinning nozzle of spinning solution curvature；
2) driving motor 4 of metal cylinder roller 5 is opened, and the revolving speed of metal cylinder roller 5 is set；
3) in spinning liquid bath 2 and its turn is arranged in the controllable screw type electrostatic spinning nozzle lower submerged of spinning solution curvature
Speed, spinning liquid bath 2 contain high polymer spinning solution 10；
4) it opens high pressure generator 1 to switch, is slowly increased voltage to required spinning voltage；
5) a large amount of jet streams 3 generate on the spinning solution surface 11 of top spiral spinning cutter head；
6) jet stream 3 flies to metal cylinder roller 5, solvent volatilization under high voltage electrostatic field, and jet stream stretches solidification deposition
A large amount of nanofibers 6 are formed on metal cylinder roller 5.
1 voltage regulation limits of high pressure generator be 0-100KV, the controllable screw type electrostatic spinning nozzle of spinning solution curvature with
The angular speed of 0- 15r/min rotates, and metal cylinder diameter of cylinder is 80mm-1200mm, and 4 revolving speed of motor is 0-100r/min.
Embodiment 1
Nanometer is prepared using polyacrylonitrile (PAN) and N-N dimethylformamide (DMF) prepared high polymeric solution below
Fiber.The mass fraction for preparing PAN high polymeric solution is 10%.Metal roller 5 is grounded 7, adjust metal cylinder roller 5 and is spun
The distance of the controllable screw type electrostatic spinning nozzle of silk liquid curvature is 20cm；Open the driving of reception device metal cylinder roller 5
Motor 4, and it is 60r/min that drum rotation speed, which is arranged,；The controllable screw type electrostatic spinning nozzle rotation speed of spinning solution curvature is set
For 10r/min；It opens high pressure generator 1 to switch, is slowly increased voltage to 50KV；A large amount of jet streams 3 are in top spiral spinning cutter head 8
Spinning solution surface 11 generate；Jet stream 3 flies to metal roller 5 under high voltage electrostatic field, and solvent volatilization, jet stream 3 stretches solid
Change, which is deposited on metal roller 5, forms a large amount of nanofibers 6.
Embodiment 2
The present embodiment is similar to Example 1, the difference is that: the mass fraction for preparing PAN high polymeric solution is 12%；
The distance of metal cylinder roller 5 and the controllable screw type electrostatic spinning nozzle of spinning solution curvature is 18cm；Metal cylinder roller 5
Revolving speed is 80r/min；The controllable screw type electrostatic spinning nozzle rotation speed of spinning solution curvature is 12r/min；High pressure generator 1
Voltage is 55KV.
Embodiment 3
The present embodiment is similar to Example 1, the difference is that: the mass fraction for preparing PAN high polymeric solution is 14%；
The distance of metal cylinder roller 5 and the controllable screw type electrostatic spinning nozzle of spinning solution curvature is 22cm；Metal cylinder roller 5
Revolving speed is 80r/min；The controllable screw type electrostatic spinning nozzle rotation speed of spinning solution curvature is 15r/min；High pressure generator 1
Voltage is 55KV.
Above embodiments are the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other any without departing from made changes, modifications, substitutions, combinations, simplifications under Spirit Essence and principle of the invention,
It should be equivalent substitute mode, be included in protection scope of the present invention.
Claims (9)
1. a kind of screw type electrostatic spinning nozzle that spinning solution curvature is controllable, including spiral spinning cutter head (8), characterized in that institute
What is stated includes being fixedly installed with spiral grooves casing (9) on spiral spinning cutter head (8), and the spiral spinning cutter head (8) is by profile
For conveyor screw and cylindrical center the axis composition that helix, section are triangle；The spiral grooves casing (9) is institute by profile
It states helix, the section of spiral spinning cutter head (8) and does not close isosceles trapezoid ring and cylindrical center axis composition, institute for supreme bottom
State spiral grooves casing (9) and spiral spinning cutter head (8) concentric arrangement.
2. the controllable screw type electrostatic spinning nozzle of spinning solution curvature as described in claim 1, characterized in that the profile spiral shell
The diameter of spin line is 80-500mm, screw pitch 10-100mm；The section of outline triangle is isosceles triangle, bottom 20-
100mm, a height of 40-200mm have 5-10mm fillet at the helix of base angle at the triangle two.
3. the controllable screw type electrostatic spinning nozzle of spinning solution curvature as claimed in claim 1 or 2, characterized in that the spiral shell
Rotation spinning cutter head (8) material is metallic copper.
4. the controllable screw type electrostatic spinning nozzle of spinning solution curvature as described in claim 1, characterized in that the spiral goove
There is 5-10mm smooth fillet on slot casing (9) top；The spiral grooves casing (9) and spiral spinning cutter head (8) form 0-10mm
Wide narrow-gap channel.
5. the controllable screw type electrostatic spinning nozzle of spinning solution curvature as described in claim 1 or 4, characterized in that the spiral shell
Rotation ditch slot casing (9) material is polytetrafluoroethylene (PTFE).
6. a kind of screw type electrostatic spinning nozzle controllable using spinning solution curvature as described in claim 1 carries out electrostatic spinning
Method, mainly comprise the steps that
1) it is connected by metal cylinder roller (5) ground connection (7) or with high pressure generator (1) cathode, spiral spinning cutter head (8) and high pressure
Generator (1) anode is connected, adjust metal cylinder roller (5) and the controllable screw type electrostatic spinning nozzle of spinning solution curvature away from
From；
2) driving motor (4) of metal cylinder roller (5) is opened, and the revolving speed of metal cylinder roller (5) is set；
3) in spinning liquid bath (2) and its turn is arranged in the controllable screw type electrostatic spinning nozzle lower submerged of spinning solution curvature
Speed, spinning liquid bath (2) contain high polymer spinning solution (10)；
4) high pressure generator (1) switch is opened, is slowly increased voltage to required spinning voltage；
5) a large amount of jet streams (3) generate on the spinning solution surface (11) of top spiral spinning cutter head；
6) jet stream (3) is flown to metal cylinder roller (5) under high voltage electrostatic field, and solvent volatilization, jet stream stretches solidification deposition
A large amount of nanofibers (6) are formed on metal cylinder roller (5).
7. electrospinning process as claimed in claim 6, characterized in that metal cylinder roller (5) diameter is 80mm-
1200mm, adjustable speed motor (4) revolving speed are 0-100r/min.
8. electrospinning process as claimed in claim 6, characterized in that the controllable screw type Static Spinning of the spinning solution curvature
The angular speed of silk spray head rotation is 0-15r/min.
9. electrospinning process as claimed in claim 6, characterized in that high pressure generator (1) voltage regulation limits are
0-100KV。
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| CN201910217391.5A CN109881268B (en) | 2019-03-21 | 2019-03-21 | Spiral electrostatic spinning nozzle with controllable spinning solution curvature and application method thereof |
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| CN201910217391.5A CN109881268B (en) | 2019-03-21 | 2019-03-21 | Spiral electrostatic spinning nozzle with controllable spinning solution curvature and application method thereof |
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| CN109881268B CN109881268B (en) | 2021-08-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295399A (en) * | 2019-06-27 | 2019-10-01 | 南通顶誉纺织机械科技有限公司 | A kind of brush electrostatic spinning apparatus and its application method |
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| US20140377391A1 (en) * | 2013-06-25 | 2014-12-25 | Paul Kaohing Lee | Electro Fiber Pulling Apparatus with Spiral Rod |
| CN204608225U (en) * | 2015-04-08 | 2015-09-02 | 刘千祥 | A kind of synchronous circulating type helixseal belting for electrostatic spinning |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2902114A1 (en) * | 2006-06-12 | 2007-12-14 | Promiles Snc | POLYMERIC FILAMENT HAVING AT LEAST ONE LONGITUDINAL ETOFFE CHANNEL COMPRISING THESE FILAMENTS, ARTICLE FORMED THEREFROM, AND METHOD OF MAKING SAID FILAMENT |
| CN102828259A (en) * | 2012-09-18 | 2012-12-19 | 天津工业大学 | Saw tooth type needle-free electrostatic spinning device |
| US20140377391A1 (en) * | 2013-06-25 | 2014-12-25 | Paul Kaohing Lee | Electro Fiber Pulling Apparatus with Spiral Rod |
| CN103484953A (en) * | 2013-09-11 | 2014-01-01 | 天津工业大学 | Disc-type needle-free electrostatic spinning device |
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| CN110295399A (en) * | 2019-06-27 | 2019-10-01 | 南通顶誉纺织机械科技有限公司 | A kind of brush electrostatic spinning apparatus and its application method |
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Effective date of registration: 20211126 Address after: 1882 Yan'an west road, Changning District, Shanghai Patentee after: DONGHUA University Patentee after: NARI Weikang (Shanghai) Technology Co., Ltd Address before: 201620 No. 2999 North Renmin Road, Songjiang new town, Songjiang District, Shanghai. Patentee before: DONGHUA University Patentee before: Nantong Dingyu Textile Machinery Technology Co., Ltd |