CN104726944B - A kind of nozzle and its equipment for preparing nanofiber - Google Patents
A kind of nozzle and its equipment for preparing nanofiber Download PDFInfo
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- CN104726944B CN104726944B CN201510140006.3A CN201510140006A CN104726944B CN 104726944 B CN104726944 B CN 104726944B CN 201510140006 A CN201510140006 A CN 201510140006A CN 104726944 B CN104726944 B CN 104726944B
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- Prior art keywords
- nozzle
- liquid
- polarizer
- cavity
- buffering
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
Abstract
A kind of nozzle and its equipment for preparing nanofiber of the present invention, the nozzle includes the shell sheath with cavity, at least one makes liquid into the liquid inlet of the cavity, at least one make liquid leave the electric discharge outlet of the cavity and one be contained in the cavity inside be used for electric charge is transferred to buffering polarizer in liquid, the specific surface area of the buffering polarizer is at least 5 ㎡/kg, the equipment includes nozzle, power supply, for liquid to be transported into the conveying device of the nozzle and reception device for receiving the fiber sprayed in the nozzle, the power supply is provided with two ports of both positive and negative polarity, wherein one end is connected to the buffering polarizer, the other end is connected to the reception device.The present invention prepares the nozzle and its equipment of nanofiber by setting the buffering polarizer of high-specific surface area to improve production efficiency, discharging outlet in the flat outer surface of shell sheath, reduces corona discharge phenomenon.
Description
Technical field
The present invention relates to being a kind of nozzle and its equipment for preparing nanofiber, particularly one kind passes through electrostatic spinning technique
Prepare the nozzle and its equipment of nanofiber.
Background technology
Electrostatic spinning technique is to prepare superfine fibre or yarn from solution using electrostatic force, generally in nanometer to micron
Size.Drop is electrically charged under electric field action, and electrostatic force, which can neutralize surface tension, makes drop deform, when electrostatic force is more than table
Face tension force to a certain extent after, drop can form injection thread, and thread divides in course of injection and solvent evaporates, final
To nanofiber.Taylor cone can be formed in the place for spraying thread.If the intermolecular force of drop is sufficiently large, thread is just not
It can divide, a branch of powered thread can be formed.
Fig. 1 is the existing schematic diagram of electrospinning device 10.Equipment 10 generally includes a high voltage power supply 12, a syringe
20, its syringe needle 14 and high voltage power supply 12 are connected, and one receives to electrode 16.Polymer Solution for spinning is positioned over
In parenteral solution 20.
During electrostatic spinning, application high pressure makes the drop polarized charged at needle point on Polymer Solution 18.Liquid at needle point
Drop is moved because electrostatic force is drawn to reception to electrode 16, forms the taylor cone of cone.When electrostatic force is more than Polymer Solution
Surface tension, solution from taylor cone tip spray forms thread.Powered thread is drawn into ultra-fine under the traction of electrostatic force
Fiber 22, is finally collected in reception on electrode 16.
Electrostatic spinning includes Polymer Solution, collosol and gel, special suspension and fused solution etc. with liquid, can be loaded in
In syringe 20.Liquid is typically flowed out by syringe pump with fixed flow rate from needle point 14.
Electrostatic spinning technique is difficult to mass produce fiber.Existing electrostatic spinning technique shortcoming includes low production efficiency and pin
Head is easily blocked.
In addition, corona discharge is a subject matter of existing electrostatic spinning technique, especially use without electric conductivity
When Polymer Solution and fused solution.Electric charge is substantially for electrostatic spinning process from syringe needle to spinning solution with higher transmission rate
Ask, can be realized by the voltage increased between syringe needle and collection device.But the corona discharge under high-pressure situations typically occurs in electricity
Lotus assembles most places, such as sophisticated.Therefore the prong pole of figure designed in Fig. 1 is also easy to produce corona discharge phenomenon.
A kind of new prepare the nozzle and its equipment of nanofiber to solve the above problems therefore, it is necessary to provide.
The content of the invention
It is an object of the invention to provide the nozzle for preparing nanofiber that a kind of production efficiency is high, corona discharge is few and its set
It is standby.
The present invention is achieved through the following technical solutions above-mentioned purpose：A kind of nozzle for preparing nanofiber, including band are free
The shell sheath of chamber, at least one make liquid enter the cavity liquid inlet, at least one liquid is left putting for the cavity
Electricity outlet and a buffering polarizer for being used to be transferred to electric charge in liquid for being contained in the cavity inside, the buffering
The specific surface area of polarizer is at least 5 ㎡/kg.
Further, the electric discharge outlet is in the flat outer surface of the shell sheath.
Further, the shell sheath is provided with the conductive port being connected with the buffering polarizer.
Further, the shell sheath is the one or two in conductive material and non-conducting material.
Further, the liquid inlet is provided with the storage area for the liquid that prestores.
A kind of equipment for preparing nanofiber, including nozzle, power supply, the conveying for liquid to be transported to the nozzle are filled
Put and for receiving the reception device of the fiber sprayed in the nozzle, the nozzle includes the shell sheath with cavity, at least one
The individual liquid inlet for making liquid enter the cavity, at least one electric discharge for making liquid leave the cavity are exported and an appearance
Put the buffering polarizer for being used to electric charge is transferred in liquid in the cavity inside, the specific surface area of the buffering polarizer
At least 5 ㎡/kg, the power supply is provided with two ports of both positive and negative polarity, and wherein one end is connected to the buffering polarizer, and the other end connects
It is connected to the reception device.
Further, the power supply is high-voltage DC power supply.
Further, the liquid transporting apparatus includes the heater for being used to heat liquid.
Further, the heater uses infrared heating mode.
Further, the liquid transporting apparatus includes screw rod and the motor for driving the screw rod.
Compared with prior art, the present invention, which prepares the nozzle of nanofiber and its beneficial effect of equipment, is：By setting
The buffering polarizer of high-specific surface area improves production efficiency, will discharge outlet in the flat outer surface of shell sheath, reduces corona
Electric discharge phenomena.
Brief description of the drawings
Fig. 1 is conventional electrostatic spinning equipment schematic diagram.
Fig. 2 is a kind of sectional view for the nozzle for preparing nanofiber.
Fig. 3 a are a kind of sectional views for the nozzle for preparing nanofiber.
Fig. 3 b are Fig. 3 b top views.
Fig. 4 is a kind of sectional view for the nozzle for preparing nanofiber.
Fig. 5 a are a kind of sectional views for the nozzle for preparing nanofiber.
Fig. 5 b are Fig. 5 a top views.
Fig. 6 a are a kind of sectional views for the nozzle for preparing nanofiber.
Fig. 6 b are Fig. 6 a top views.
Fig. 7 a are a kind of sectional views for the nozzle for preparing nanofiber.
Fig. 7 b are Fig. 7 a top views.
Fig. 8 is a kind of schematic diagram for the equipment for preparing nanofiber.
Embodiment
Fig. 2 is embodiment 1, and the schematic diagram of the nozzle 30 of fiber is prepared for electrostatic spinning.Nozzle 30 generally includes one
Shell sheath 32 and a cavity 34.
There is a liquid inlet 36 on shell sheath 32, spinning liquid enters cavity 34 by it.There is one on shell sheath 32 to put
Electricity outlet 38, liquid leaves cavity 34 by it.
Nozzle 30 also includes buffering polarizer 40, is positioned in the middle of cavity 34, by polarizer by electric charge during spinning
High efficiency of transmission is into the liquid in cavity 34.Importantly, the physical dimension of polarizer make electrode specific surface area be at least 5 ㎡/
kg。
A kind of suitable polarizer 40 has very big specific surface area, and quickly and easily electric charge can be transferred in cavity 34
Liquid in.The structure type of polarizer includes：It is line, net, grid, foam, sponge, cloth, braid, fin, parallel-plate, viscous
Connect mealy structure, interwoven material etc..
The material that shell sheath can be coexisted with any suitable conductive or non-conducting material, or both, such as metal, modeling
Material, ceramics, rock, timber, paper, bamboo etc..Similarly, polarizer 40 is the example of a porous high-specific surface area, its
Can fully it be contacted with liquid when liquid flows into cavity 34.Shell sheath 32 and polarizer 40, which can also be prepared into an entirety, to be made
With such as with 3D printing technique, foundry engieering.Embodiment disclosed by the invention can improve breakdown voltage to higher than in air
Puncture the limit（It is about per cm 20 kilovolts）, and shell sheath material is electrically conductive can also be non-conductive.
Polarizer 40 can have different configurations and arrangement, and flow velocity when liquid flows through cavity 34 can be adjusted during spinning.
In embodiment, the optimal design-aside of polarizer 40 can make liquid flow through the surfaces externally and internally of polarizer 40 with constant flow rate, make inflow empty
The liquid non-uniform polar of chamber 34.
In embodiment, in order that spinning solution is flowed with constant flow rate, the embodiment in Fig. 3 a is reserved at liquid inlet 36
One fluid storage space, liquid enters back into cavity 34 after being full of.
In embodiment, shell sheath 32 also has an electrode ports 44, is connected polarizer 40 and external power source by it.Cause
This, when port 44 connects the positive pole of high voltage power supply, spinning solution is polarized positively charged, when port 44 connects the negative pole of high voltage power supply
When spinning solution it is negatively charged.It can be described in detail below.
Electric discharge outlet 38 is opened in the flat outer surface 42 of shell sheath, and corona discharge can be reduced during spinning.Above carry
Arrive, a subject matter of conventional electrostatic spinning system is exactly that can cause corona discharge using syringe needle shape nozzle.The present invention is disclosed
To be a relatively flat surface 42 to open an electric discharge outlet in shell sheath 32 38 be effectively solution.
In embodiment, electric discharge outlet 38 is circular, and diameter is between 0.1 millimeter to 10 millimeters.In addition, it is to be understood that implementing
Example is not limited to the scope of size, and various various sizes of electric discharge outlets 38 can be used in the field.
Fig. 3 a, 3b are that a relatively simple nozzle 30 for volume production is designed.The embodiment middle sleeve 32 is one two
There is the conduit of lid at end, and the section of conduit can be variously-shaped, such as circle, square, rectangle, hexagon etc..Conduit
One end is liquid inlet 36, and the other end is conductive port 44, connection polarizer 40 and external power source.For liquid inlet and conduction
The position of port does not have any limitation, and they can be in any suitable position.
Fig. 4 is a kind of design drawing of coaxial nozzle, available for preparing shell sheath structure nano fiber.In embodiment, shell sheath 32
Opposite position is equipped with two different liquid inlets 36 and two cavitys 34, and two cavitys connect separated 38 Hes of conductive outlet respectively
41. an electric discharge outlet 38 is coaxially arranged in the middle of another electric discharge outlet 41.Two cavitys 40 are separated with conductive material, because
This nozzle 30 only needs to a conductive port 44.
Similarly, Fig. 5 a, 5b, 6a, 6b, 7a, 7b are the not be the same as Example of nozzle disclosed by the invention.Difference includes
The shape of shell sheath 32 and cavity 34, the quantity of electric discharge outlet 38 and arrangement.Similarly, conductive port 44, electric discharge outlet 38 and liquid
The relative position of body entrance 36 can be adjusted as needed.
A kind of electrostatic spinnings of Fig. 8 prepare the schematic diagram of melting spinning system 50 of fiber.Melting spinning system can use the above to carry
Any nozzle 30 arrived.Melting spinning system 50 generally comprises a nozzle 30, one have two ports of both positive and negative polarity power supply.
The either port of power supply is connected by the polarizer in conductive port 44 and nozzle 30.
Melting spinning system 50 includes a liquid transporting apparatus, for spinning solution to be passed through into the input nozzle 30 of liquid inlet 36
In.Reception device 62 is connected to the other end of power supply.High-voltage DC power supply is used in the present embodiment.
In the present embodiment, liquid transporting apparatus is that, using screw extruding feed 54, the drive screw rod of motor 52 will melt hydraulic pressure
Enter in nozzle cavity.Melting spinning system is used as spinning solution using a kind of macromolecular material.Melting spinning system includes an environment control
Device 58 processed, a feedstock transportation entrance 56.System also includes a heater 64, by screw rod feeding system 54 high score
Sub- material molten.
In the present embodiment, environment control unit 58 needs to keep certain temperature to melt shape to ensure that Polymer Solution is in
State.Electric Field Distribution during spinning may be influenceed due to heater 64, so using infrared ray in safe distance external heat ring
Border control device 58.Heater 64 is equipped with focus lamp to make full use of heat energy.Nozzle 30 and screw rod feeding system 54 be not by
Conductivity ceramics pipe is connected, and power supply 60 is applied to high voltage electric field and heater 64 in nozzle on macromolecule fused solution and separated.
In addition, reception device 62 is grounded and cooled down, so nanofiber sprays to collect after solidification from nozzle 30 is collecting dress
Put on 62.
The present invention discloses a kind of utilize and melts the method that spinning system 50 and nozzle 30 prepare nanofiber.Including following step
Suddenly there is provided a nozzle 30 there is provided the power supply that one has two ports of both positive and negative polarity, wherein one end passes through conductive port 44 and nozzle
Polarizer in 30 is connected there is provided a macromolecule melt liquid generation device 54, and spinning solution is conveyed by liquid inlet 36
Into nozzle 30.
This method also includes providing a reception device 62, by itself and the connection of the power supply other end, for collecting from nozzle 30
The nanofiber that upper electric discharge outlet 38 sprays.Connect power supply 60 and the production fiber of macromolecule melt liquid generation device 54.This hair
Bright disclosed method is to utilize the non-conductive liquid of the Static Spinning of nozzle 30, safely liquid can apply high voltage electric field, it is ensured that can
Normal spinning.Buffering polarizer 40 in shell sheath 32 enhances polarization efficiency.
Outlet of discharging is opened in the number of locations of the relatively flat position of sleeve pipe 32 and reasonable arrangement outlet, can be effective
Improve corona discharge phenomenon and thus caused spinning efficiency is low.
It should be understood that embodiments described above is not limited to the scope of the present invention.Any change for embodiment or
Modification is within.
The present invention is described, unless there are specified otherwise, and the word such as " comprising " includes the parameter sum mentioned in embodiment
According to, but it is not excluded for other any possible parameters.
Embodiments of the invention are not to exclude other examples.One embodiment can confirm certain aspects of the invention, simultaneously
In terms of another embodiment can confirm the other of the present invention.These embodiments are intended to be best understood from those skilled in the art
With perform the present invention, rather than limitation the scope of the present invention, except having a content of specified otherwise.
Claims (10)
1. a kind of nozzle for preparing nanofiber, it is characterised in that including the shell sheath with cavity, at least one enter liquid
The liquid inlet of the cavity, at least one make liquid leave the cavity electric discharge outlet and one be contained in the cavity
The internal buffering polarizer for being used to be transferred to electric charge in liquid, the buffering polarizer is loose structure, the buffering pole
The specific surface area for changing device is at least 5 ㎡/kg.
2. the nozzle according to claim 1 for preparing nanofiber, it is characterised in that：The electric discharge outlet is located at the shell
In the flat outer surface of sheath.
3. the nozzle according to claim 1 for preparing nanofiber, it is characterised in that：The shell sheath is provided with and the buffering
The conductive port of polarizer connection.
4. the nozzle and its equipment according to claim 1 for preparing nanofiber, it is characterised in that：The shell sheath is conduction
One or two in material and non-conducting material.
5. the nozzle and its equipment according to claim 1 for preparing nanofiber, it is characterised in that：The liquid inlet is set
There is the storage area for the liquid that prestores.
6. a kind of equipment for preparing nanofiber, it is characterised in that：Including nozzle, power supply, for liquid to be transported into the spray
The conveying device of mouth and the reception device for receiving the fiber sprayed in the nozzle, the nozzle include the shell with cavity
Sheath, at least one make liquid enter the cavity liquid inlet, at least one make liquid leave the cavity electric discharge outlet
And a buffering polarizer for being used to be transferred to electric charge in liquid for being contained in the cavity inside, the buffering polarizer
It is loose structure, the specific surface area of the buffering polarizer is at least 5 ㎡/kg, and the power supply is provided with two ports of both positive and negative polarity, its
Middle one end is connected to the buffering polarizer, and the other end is connected to the reception device.
7. the equipment according to claim 6 for preparing nanofiber, it is characterised in that：The power supply is high voltage direct current
Source.
8. the equipment according to claim 6 for preparing nanofiber, it is characterised in that：The liquid transporting apparatus includes using
In the heater of heating liquid.
9. the equipment according to claim 8 for preparing nanofiber, it is characterised in that：The heater uses infrared ray
Mode of heating.
10. the equipment according to claim 6 for preparing nanofiber, it is characterised in that：The liquid transporting apparatus includes
Screw rod and the motor for driving the screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140006.3A CN104726944B (en) | 2015-03-28 | 2015-03-28 | A kind of nozzle and its equipment for preparing nanofiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140006.3A CN104726944B (en) | 2015-03-28 | 2015-03-28 | A kind of nozzle and its equipment for preparing nanofiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104726944A CN104726944A (en) | 2015-06-24 |
| CN104726944B true CN104726944B (en) | 2017-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510140006.3A Active CN104726944B (en) | 2015-03-28 | 2015-03-28 | A kind of nozzle and its equipment for preparing nanofiber |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109673A (en) * | 1984-12-20 | 1986-06-10 | 帝国化学工业公司 | Electrostatic spray |
| SU1524936A1 (en) * | 1987-08-03 | 1989-11-30 | Кишиневское научно-производственное объединение технологии электробытового машиностроения | Apparatus for electrostatic deposition of pulverulent materials |
| JP2012001865A (en) * | 2010-06-21 | 2012-01-05 | National Institute Of Advanced Industrial & Technology | Fibrous composite material and method for producing the same, and fiber member and functional device which include fibrous composite material |
| CN102660785A (en) * | 2012-05-31 | 2012-09-12 | 苏州大学 | Bubble electrostatic spinning device |
| CN102703998A (en) * | 2012-06-21 | 2012-10-03 | 中原工学院 | Jet yarn spinning device for electrostatic spun nano fiber and preparing method |
| CN204530035U (en) * | 2015-03-28 | 2015-08-05 | 昆山同日精密测试设备有限公司 | A kind of nozzle and equipment thereof preparing nanofiber |
-
2015
- 2015-03-28 CN CN201510140006.3A patent/CN104726944B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109673A (en) * | 1984-12-20 | 1986-06-10 | 帝国化学工业公司 | Electrostatic spray |
| SU1524936A1 (en) * | 1987-08-03 | 1989-11-30 | Кишиневское научно-производственное объединение технологии электробытового машиностроения | Apparatus for electrostatic deposition of pulverulent materials |
| JP2012001865A (en) * | 2010-06-21 | 2012-01-05 | National Institute Of Advanced Industrial & Technology | Fibrous composite material and method for producing the same, and fiber member and functional device which include fibrous composite material |
| CN102660785A (en) * | 2012-05-31 | 2012-09-12 | 苏州大学 | Bubble electrostatic spinning device |
| CN102703998A (en) * | 2012-06-21 | 2012-10-03 | 中原工学院 | Jet yarn spinning device for electrostatic spun nano fiber and preparing method |
| CN204530035U (en) * | 2015-03-28 | 2015-08-05 | 昆山同日精密测试设备有限公司 | A kind of nozzle and equipment thereof preparing nanofiber |
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| Publication number | Publication date |
|---|---|
| CN104726944A (en) | 2015-06-24 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20170515 Address after: 201800, J593, room 2, 4268 South Main Road, Jiading District, Shanghai Applicant after: Shanghai Tong Rui Cci Capital Ltd Address before: Suzhou City, Jiangsu province 215345 Kunshan Dianshan Lake Town Minhe Road East Applicant before: Kunshan Tungray Precision Testing Co., Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20200902 Address after: No. 3 Dingjiabang Road, Dianshan Lake Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: Kunshan Tongri robot intelligent technology Co., Ltd Address before: 201800, J593, room 2, 4268 South Main Road, Jiading District, Shanghai Patentee before: SHANGHAI TONGRUI INVESTMENT MANAGEMENT Co.,Ltd. |
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