CN103993376B - A kind of electrostatic spinning apparatus for preparing bundles of nanofibers - Google Patents
A kind of electrostatic spinning apparatus for preparing bundles of nanofibers Download PDFInfo
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- CN103993376B CN103993376B CN201410178328.2A CN201410178328A CN103993376B CN 103993376 B CN103993376 B CN 103993376B CN 201410178328 A CN201410178328 A CN 201410178328A CN 103993376 B CN103993376 B CN 103993376B
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- nanofibers
- auxiliary electrode
- electrostatic spinning
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Abstract
The invention discloses a kind of electrostatic spinning apparatus for preparing bundles of nanofibers, in device auxiliary electrode is configured with many shower nozzle spinning plates, due to the presence of auxiliary electrode, reduce the electric jamming between each shower nozzle, so that spray Electric Field Distribution becomes uniform more, so that the degree of orientation of institute's spinning nano fibre beam improves about 25%, mechanical property is also improved therewith, and the line density of institute's spinning nano fibre beam increases with the increase of spinning head number, and ultimate strength also strengthens therewith.Bundles of nanofibers prepared by this device can be directly used for textile process.Its excellent structure and mechanical property, in ultralight slim textile, intelligent textile, sensor and biomedical materials field have a good application prospect.
Description
Technical field
The present invention relates to a kind of electrostatic spinning apparatus for preparing bundles of nanofibers, more specifically, it relates to prepared by one kind
The electrostatic spinning apparatus with auxiliary electrode of bundles of nanofibers.
Background technology
Electrostatic spinning is a kind of method of maximally efficient production nanofiber, and its device is simple, with low cost, because
This electrostatic spinning is widely used in producing nanofiber.Compared with traditional fibre, nanofiber has high specific surface area,
Flexible surface property, therefore it is in biomedical engineering, electronic engineering, the field such as weaving and filtering have widely should
Use prospect.However, electrostatic textile product is mostly nano fibrous membrane at present, its product form is single so that the application of nanofiber
It is limited in scope.The random orientation structure and poor mechanical property of nano fibrous membrane significantly limit its textile applications.
In recent years, the field of method of electrostatic spinning preparation nano-fibre yams/fibre bundle occurs in that the different processing of many kinds
Method, such as jet resultant yarn method (CN102703998A), bipolar electrode are orientated resultant yarn method (CN103088478A), vortex resultant yarn method
(CN103103642A), wet method (CN101845680B) and collector rotary process (CN102277668A) etc..Wet method-electrostatic spinning
It is a kind of method for effectively producing continuous nano-fibre beam.Smit(Eugene Smit,2005,46,2419)、Khil
(Myung‐Seob Khil,Journal of Biomedical Materials Research Part B:Applied
Biomaterials, 2005,72,117) and Pan Zhijuan (CN100576672C) etc. using single spraying head wet method-electrostatic spinning method into
Continuous nano-fibre yarn has been spinned work(.It is less efficient but single spraying head Static Spinning is only with a spinning head jet spinning, it is impossible to
Produced in enormous quantities.At present also have using multi-nozzle electrospinning prepare bundles of nanofibers device, some of them device by
The electric field repulsion effect between uncontrollable good each shower nozzle, spinning solution jet direction is unstable, in causing the bundles of nanofibers for preparing
Fiber alignment degree is low, poor mechanical property.Some improved devices can improve the bundles of nanofibers degree of orientation of preparation, but it is filled
Complex structure is put, spinning head quantity and other structure changes are dumb, and fiber bundle structure is single, also limit the popularization of device.
The content of the invention
The present invention seeks to solve to prepare bundles of nanofibers the deficiencies in the prior art, there is provided a kind of simple structure, many spinnerets
The electrostatic spinning apparatus of electric fields uniform distribution between head, such that it is able to produce, degree of orientation is high, the good bundles of nanofibers of mechanical property.
The technical scheme is that：The electrostatic spinning apparatus for preparing bundles of nanofibers include spinning solution conveying device, point
Orchestration 4, spinning plate 5, high voltage power supply 6, liquid bath 7, bundles of nanofibers collection device, the two poles of the earth of the high voltage power supply 6 respectively with spinning
Filament plate 5 is connected with the bottom of liquid bath 7；Described device also includes the auxiliary electrode being fixed on by insulating materials in spinning plate [5]
[16], auxiliary electrode [16] lower edge and the range difference of spinning head [15] needle point are 2.5-15mm.
Further, the preferred scheme of the auxiliary electrode 16 is sheet round copper sheet, and its electrical conductivity is 1 × 107-5.8×
107 s/ m, copper thickness is 0.05-0.2mm, and copper sheet is highly 5-30mm, and auxiliary electrode size is 0-600mm × 0-600mm, circle
Angular radius is 5-30mm.
Further, the preferred scheme of the distributor 4 is multistage distributor.
Further, the spinning solution conveying device includes flow pump 1, the glass syringe 2 being placed on flow pump 1 and connects
Connect the polyfluortetraethylene pipe 3 of the output end of glass syringe 2 and the input of distributor 4.
Further, the bundles of nanofibers collection device includes that order is arranged in the godet 8 of the side of liquid bath 7, heating
Device 9, tensioner 10 and Wound-up roller 11.
Further, the voltage preferred scheme of the high voltage power supply 6 is 20-30kV.
Further, its preferred scheme of the flow of each spinning head in the spinning plate 5 is 0.06-1mL/h, spinning head
Tip is 40-80mm with the vertical range of solution surface in liquid bath 7.
Further, its preferred scheme length of the heater 9 is 100-300mm, and temperature is 300-400 DEG C.
Further, its preferred scheme of the linear velocity of the Wound-up roller 11 is 440-1470m/h.
Further, when the median plane axle center of the auxiliary electrode 16 is with 15 needle point distribution plane axis coinciding of spinning head, system
The degree of orientation of standby bundles of nanofibers is maximum.
It is an advantage of the invention that compared with prior art, apparatus structure is simple, and spinning head quantity is conveniently adjusted, electrostatic spinning
Electric fields uniform distribution between device many spinning heads, such that it is able to produce, degree of orientation is high, the good bundles of nanofibers of mechanical property.
Brief description of the drawings
Below in conjunction with the accompanying drawings and embodiment the invention will be further described：
Fig. 1 is bundles of nanofibers electrostatic spinning apparatus schematic diagram；
Fig. 2 is liquid bath, one-level porous plate, two grades of perforated plate constructions of distributor；
Fig. 3 is auxiliary electrode configuration figure；
Fig. 4 is the 5 jet arrangement modes with auxiliary electrode；
Fig. 5 are the 15 jet arrangement modes with auxiliary electrode；
Wherein：The liquid bath of 5 high voltage power supply of flow pump 1 glass syringe, 2 polyfluortetraethylene pipe, 3 distributor, 4 spinning plate 6
7 godet, 8 heater, 9 tensioner, 10 Wound-up roller, 11 reservoir, 12 one-level porous plate, 13 2 grades of porous plates 14
The auxiliary electrode 16 of spinning head 15
Specific embodiment
The applicable spinning solution species of apparatus of the present invention is more, mainly has polyamide 6/formic acid solution, polysulfones/DMF solution, gathers
Lactic acid/dichloromethane solution etc..Polyamide 6/formic acid solution is below chosen as spinning solution, in conjunction with the accompanying drawings and embodiments to specific
Implementation method is illustrated.
Comparative example 1-3
Nano- fiber preparation device and method that comparative example is used, in addition to without auxiliary electrode, 5 jet arrangement modes
With the jet arrangement mode of embodiment 1,15 with embodiment 2, the same embodiment of the preparation method of other parameters and bundles of nanofibers
1.The preparation of comparative example spinning solution and body lotion is with embodiment 1.
The structure and mechanical property of the bundles of nanofibers of preparation are as shown in table 1.
Without the structure and mechanical property of auxiliary electrode electrostatic spinning nano fiber beam under the different spinning head quantity of table 1
Embodiment 1：
As shown in Fig. 1~Fig. 5, one kind that the present embodiment is provided prepares bundles of nanofibers electrostatic spinning apparatus, including flow
Pump 1, the glass syringe 2 being placed on flow pump 1, and connect the output end of glass syringe 2 and the input of distributor 4 poly- four
Fluoride tubes 3 constitute spinning solution conveying device.Distributor 4 is multi-stage splitter, successively by reservoir 12, the and of one-level porous plate 13
Two grades of porous plates 14 are constituted.As shown in Figure 2.The output end connection spinning plate 5 of distributor 4.Spinning head 15 is distributed in spinning plate 5
On, auxiliary electrode 16 is fixed in spinning plate 5 by insulating materials, auxiliary electrode as shown in Figure 3 16 and the position of spinning head 15
Configuration.The median plane axle center of auxiliary electrode 16 and spinning head needle point distribution plane axis coinciding.Spinning plate 5 is with high voltage power supply 6 just
Pole is connected, and the negative pole of high voltage power supply 6 is connected with the bottom of 15 underface liquid bath of spinning head 7.Bathed in the tip of spinning head 15 and liquid bath 7
The vertical range on liquid surface is 60mm.The side of liquid bath 7 is bundles of nanofibers collection device, by the godet 8 sequentially arranged, plus
Thermal 9, tensioner 10 and Wound-up roller 11 are constituted.
In the present embodiment, 5 spinning heads are configured in spinning plate 5, as shown in Figure 4.The voltage of high voltage power supply 6 is 26kV；Often
Individual spinning head flow is 0.1mL/h；The length of heater 9 is 200mm, and temperature is 350 DEG C；The linear velocity of Wound-up roller 11 is
588m/h；The parameter of auxiliary electrode 16：Electrical conductivity is 5.8 × 107S/m, copper thickness is 0.1mm, and copper sheet is highly 15mm, auxiliary
Electrode size is 40mm × 40mm, and radius of corner is 10mm；
It is as follows nanofiber bundle device preparation bundles of nanofibers step to be prepared using the one kind described in the present embodiment：(1) make
Standby spinning solution：By polyamide 6 (PA6) grain dissolution in the formic acid that mass fraction is 88%, at room temperature through magnetic agitation to poly-
The particle of acid amides 6 is completely dissolved, and is configured to the polyamide 6 spinning solution that mass fraction is 25%；(2) body lotion is prepared：TX-10 is dissolved
In deionized water, it is completely dissolved through magnetic agitation to surfactant at room temperature, it is 0.5% to be configured to mass fraction
TX-10 nonionic surfactant solutions；(3) spinning solution is entered by conveying device under the pressure effect of flow pump 1 and distributed
The reservoir 12 of device 4, passes sequentially through 13, two grades of porous plates 14 of one-level porous plate, forms two-stage and evenly distributes.The allocated device 4 is equal
Each spinning head that spinning solution after even distribution enters in spinning plate 5, under the high voltage electric field effect that high voltage power supply 6 is formed, spins
Silk liquid is sprayed by each spinning head, forms nanofiber, the bath surface deposition in liquid bath 7.By the volume of Wound-up roller 11
Around tractive force effect, the nanofiber for being deposited on bath surface forms wet fiber beam, and wet fiber beam enters the drying of heater 9,
After drying, fibre bundle is stretched into tensioner 10 so that fibre bundle is further orientated, then wound on Wound-up roller
On 11, finally continuous bundles of nanofibers is formed under the drawing-off effect of the continuous rotation of Wound-up roller 11.
The structure and mechanical property of the bundles of nanofibers of preparation are as shown in table 2.The degree of orientation ratio of its spinning nano fibre beam
Degree of orientation without 5 spinning head institute spinning nano fibre beams of auxiliary electrode improves 16%.5 spinning head institute spinning nano fibre beams
A diameter of identical winding speed places an order 5 times of spinning head institute spinning nano fibre beam diameter.
The structure and mechanical property of the spinning head polyamide 6 electrostatic spinning nano fiber beam of table 25
Embodiment 2
The preparation of the present embodiment spinning solution and body lotion is with embodiment 1.
Wherein spinning plate 5 is changed to 15 spinning heads, is illustrated in figure 3 15 jet arrangement modes；The voltage of high voltage power supply 6 is
26kV, each spinning head flow is 0.1mL/h；Auxiliary electrode size is 60mm × 40mm, other parameters and nanofiber system
Preparation Method is with embodiment 1.
The structure and mechanical property of bundles of nanofibers manufactured in the present embodiment are as shown in table 3.Institute spinning nano fibre beam is determined
To degree about 22% is improve than the degree of orientation of the 15 spinning head institute spinning nano fibre beams without auxiliary electrode.15 spinning heads spin to be received
The diameter of rice fibre bundle is about that identical winding speed places an order 12 times of spinning head institute spinning nano fibre beam diameter.
The structure and mechanical property of the spinning head Static Spinning polyamide 6 bundles of nanofibers of table 315
Embodiment 3-5
The preparation of the present embodiment spinning solution and body lotion is with embodiment 2.
Wherein by the height of the copper sheet of 15 spinning head auxiliary electrode 16,15mm, 17.5mm, 22.5mm are changed to respectively, device
Other technologies parameter and nanofiber preparation method are with embodiment 2.Three kinds of prepared bundles of nanofibers degree of orientations such as institute of table 4
Show.
Table 4 spins the degree of orientation of polyamide 6 bundles of nanofibers with different auxiliary electrodes high
Can be drawn by above-mentioned table 4, the improvement result of different pieces auxiliary electrode shower nozzle electric field more than 16 pairs high is different, so that
Cause the degree of orientation of institute's spinning nano fibre beam different, but degree of orientation using institute's spinning nano fibre beam after auxiliary electrode 16 will compare
Do not use the degree of orientation of 16 spinning nano fibre beams of auxiliary electrode big.During a height of 20mm of copper sheet piece, institute's spinning nano fibre beam is determined
It is maximum to degree.
From above-described embodiment as can be seen that apparatus of the present invention simple structure, auxiliary electrode is configured by spinning plate 5
16, that is, the electric jamming between spinning head is improved, mechanical property preferable bundles of nanofibers high such that it is able to produce degree of orientation.
Spinning head quantity can flexibly change simultaneously, to produce the bundles of nanofibers of different size, adapt to different application field.
Certainly the above embodiments merely illustrate the technical concept and features of the present invention, and technique is familiar with its object is to allow
People will appreciate that present disclosure and implement according to this that it is not intended to limit the scope of the present invention.It is all according to this hair
The modification that the Spirit Essence of bright main technical schemes is done, should all be included within the scope of the present invention.
Claims (8)
1. a kind of electrostatic spinning apparatus for preparing bundles of nanofibers, including spinning solution conveying device, distributor (4), spinning plate
(5), high voltage power supply (6), liquid bath (7), bundles of nanofibers collection device, the two poles of the earth of the high voltage power supply (6) respectively with spinning plate
(5) it is connected with liquid bath (7) bottom；Characterized in that, also including the auxiliary electricity being fixed on by insulating materials in spinning plate (5)
Pole (16), auxiliary electrode (16) lower edge is 2.5-15mm with the range difference of spinning head (15) needle point；The auxiliary electrode (16)
It is sheet round copper sheet.
2. a kind of electrostatic spinning apparatus for preparing bundles of nanofibers according to claim 1, it is characterised in that auxiliary electrode
Electrical conductivity is 1 × 107-5.8×107S/m, thickness is 0.05-0.2mm, is highly 5-30mm, and auxiliary electrode size is 0-600mm
× 0-600mm, radius of corner is 5-30mm.
3. a kind of electrostatic spinning apparatus for preparing bundles of nanofibers according to claim 1, it is characterised in that the distribution
Device (4) is multi-stage splitter.
4. a kind of electrostatic spinning apparatus for preparing bundles of nanofibers according to claim 1, it is characterised in that the spinning
Liquid conveying device includes flow pump (1), the glass syringe (2) being placed on flow pump (1) and connection glass syringe (2) output
End and the polyfluortetraethylene pipe (3) of distributor (4) input.
5. a kind of electrostatic spinning apparatus for preparing bundles of nanofibers according to claim 1, it is characterised in that the nanometer
Fiber bundle collecting device includes that order is arranged in the godet (8) of liquid bath (7) side, heater (9), tensioner (10) and
Wound-up roller (11).
6. a kind of electrostatic spinning apparatus for preparing bundles of nanofibers according to claim 1, it is characterised in that the high pressure
The voltage of power supply (6) is 20-30kV；The flow of each spinning head on the spinning plate (5) is 0.06-1mL/h, spinning head point
End is 40-80mm with the vertical range of solution surface in liquid bath (7).
7. a kind of electrostatic spinning apparatus for preparing bundles of nanofibers according to claim 5, it is characterised in that the heating
The length of device (9) is 100-300mm, and temperature is 300-400 DEG C；The linear velocity of the Wound-up roller (11) is 440-1470m/
h。
8. a kind of electrostatic spinning apparatus for preparing bundles of nanofibers according to claim 1, it is characterised in that auxiliary electrode
(16) when median plane axle center is with spinning head (15) needle point distribution plane axis coinciding, the degree of orientation of the bundles of nanofibers of preparation is most
Greatly.
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| CN201410178328.2A CN103993376B (en) | 2014-04-30 | 2014-04-30 | A kind of electrostatic spinning apparatus for preparing bundles of nanofibers |
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| CN201410178328.2A CN103993376B (en) | 2014-04-30 | 2014-04-30 | A kind of electrostatic spinning apparatus for preparing bundles of nanofibers |
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| CN103993376B true CN103993376B (en) | 2017-06-06 |
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| CN105862142B (en) * | 2016-04-21 | 2018-04-17 | 南通纺织丝绸产业技术研究院 | A kind of preparation method of polyacrylonitrile/graphene composite nano fibre yarn |
| CN106119987A (en) * | 2016-08-11 | 2016-11-16 | 佛山轻子精密测控技术有限公司 | The electrostatic spinning nozzle of a kind of face of cylinder annular array and electrospinning process |
| CN107130305B (en) * | 2017-03-21 | 2019-08-06 | 广东工业大学 | Electrospinning device and its with the continuous spray head of positive nine nozzle of truncated rectangular pyramids of auxiliary electrode |
| CN107164820A (en) * | 2017-05-22 | 2017-09-15 | 华东理工大学 | A kind of highly oriented composite conducting nanofiber |
| CN107904678A (en) * | 2017-12-27 | 2018-04-13 | 山东非金属材料研究所 | A kind of Elecstrostatic spraying apparatus oriented on demand for polarizable nanofiber |
| CN108277541A (en) * | 2018-01-29 | 2018-07-13 | 南通纺织丝绸产业技术研究院 | A kind of preparation facilities and preparation method of high intensity nano fibre beam |
| CN109097843B (en) * | 2018-09-25 | 2023-04-04 | 东莞市倍益清环保科技有限公司 | Multi-needle electrostatic spinning equipment with uniform electric field distribution |
| CN110284202B (en) * | 2019-06-14 | 2021-06-04 | 北京百年初心科技有限公司 | Special spinning equipment for electrostatic spinning nanofiber |
| CN110699764B (en) * | 2019-10-30 | 2020-09-11 | 大连理工大学 | Device for preparing controllable arrangement nano fibers based on NPN type triode |
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