CN106381531B - A kind of outer circle is interior to divide equally capillary spinneret arranged side by side, device for spinning and spinning process - Google Patents
A kind of outer circle is interior to divide equally capillary spinneret arranged side by side, device for spinning and spinning process Download PDFInfo
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- CN106381531B CN106381531B CN201611004751.6A CN201611004751A CN106381531B CN 106381531 B CN106381531 B CN 106381531B CN 201611004751 A CN201611004751 A CN 201611004751A CN 106381531 B CN106381531 B CN 106381531B
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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
-
- 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
-
- 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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/32—Side-by-side structure; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/02—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from cellulose, cellulose derivatives, or proteins
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The present invention discloses a kind of interior respectively capillary spinneret arranged side by side of outer circle, including a total capillary, there are one straight capillary tubes for setting in total capillary, the outlet end of straight capillary tube and the outlet end of total capillary flush, the input end of straight capillary tube stretches out total capillary, and the lateral wall of straight capillary tube is close to the madial wall of total capillary, also sets up that there are one tortuous capillaries in total capillary, the outlet end of tortuous capillary is arranged in the inside of total capillary, and the input end of tortuous capillary stretches out total capillary.The present invention also provides divide equally capillary spinneret arranged side by side, silicone tube, the first syringe, the second syringe in a kind of electric spinning equipment arranged side by side, including high pressure generator, the second syringe pump, the first syringe pump, fiber receiver board, outer circle.Under high voltage electric field, electrospinning arranged side by side is carried out using the electric spinning equipment arranged side by side for dividing equally capillary spinneret arranged side by side in outer circle, the parallel construction nanofiber with structural integrity, size uniform can be simply obtained with single step.
Description
Technical field
The invention belongs to field of nano material preparation, more particularly to divide equally in a kind of outer circle capillary spinneret arranged side by side,
It is a kind of with the electric spinning equipment arranged side by side for dividing equally capillary spinneret arranged side by side in outer circle and using this with dividing equally capillary in outer circle
The method that the electric spinning equipment arranged side by side of spinneret arranged side by side carries out nanofiber preparation arranged side by side.
Background technology
High-voltage electrostatic spinning technology is a kind of nano-fabrication technique of (top-down) from top to bottom, passes through extra electric field power
Overcome nozzle tip drop surface tension of liquid and viscoelastic power and form jet stream, in electrostatic repulsion, Coulomb force and surface tension
Under collective effect, the liquid jet after being atomized is drafted thousands of times by high frequency flexural, drawing, division within a few tens of milliseconds, warp
Solvent volatilizees or melt cooling obtains nano-scale fiber in receiving terminal.The technical matters process is simple, manipulation is convenient, selection material
In extensive range, controllability is strong and can pass through sprinkler design and prepares the nanofiber with microstructure characteristic, it is considered to be
A kind of most possible method for realizing continuous nano-fibre industrialized production prepares functional nano-fiber with good using the technology
Good foreground is expected.
In terms of preparing the nanofiber with microstructure characteristic by the design of spinneret, most commonly use same
Axle sleeve capillary metal tube is spinneret, prepares core sheath structure nanofiber (Moghe AK and Gupta BS.Co-axial
electrospinning for nanofiber structures:Preparation and applications.Polym
Rev 2008；48:353-377.).For two kinds of components, there are two types of space structure relationships, i.e. the core of internal and external relation
Parallel construction (the Walther A and M ü ller AHE.Janus particles of sheath structure and left-right relation:
synthesis,self-assembly,physical properties,and applications.Chem.Rev.2013；
113:5194-5261.).There are a thousands of pieces using the report that coaxial spinning throwing prepares core sheath structure nanofiber at present, and applies simultaneously
Row spinneret prepares document only more than ten pieces for nanofiber arranged side by side.And it is practical in the development and application of advanced functional material, side by side
Nanofiber is prepared on multifunctional material in design with more excellent since two kinds of components are all contacted with environment, than core sheath fibers
Gesture.
The basic reason of this phenomenon is caused to be that traditional way is to be using common two metal capillaries arranged side by side
Spinneret (Liu Z, et al.An Efficient Bicomponent TiO arranged side by side2/SnO2Nanofiber
Photocatalyst Fabricated by Electrospinning with a Side-by-Side dual
Spinneret Method.Nano Lett.2007；7:1081-1085.), hardly result in the nanofiber arranged side by side of structural integrity.
And the design that profound reason is traditional spinneret does not follow the behavior of substance and basic natural rule under high voltage electric field
Rule.
Existing electrospinning arranged side by side all uses parallel metal capillary arranged side by side for spinneret, due to using this spinning
When head carries out electrospinning arranged side by side, only there are one points to be contacted in outlet for two strands of parallel fluids, but two fluids carries phase
Same charge, therefore be easy to detach because of mutually exclusive each other, complete parallel construction cannot be obtained.
Invention content
For above-mentioned technical problem in the prior art, the present invention provides divide equally capillary spinning arranged side by side in a kind of outer circle
Head, device for spinning and spinning process, this outer circle is interior to divide equally capillary spinneret arranged side by side, device for spinning and spinning process
Solve to be difficult to prepare in the prior art spinning process parallel construction feature clearly nanofiber the technical issues of.
The present invention provides capillary spinneret arranged side by side, including a total capillary is divided equally in a kind of outer circle, described is total
The outlet end of straight capillary tube there are one settings in capillary, the outlet end of the straight capillary tube and total capillary is neat
Flat, the input end of the straight capillary tube stretches out total capillary, and the lateral wall of the straight capillary tube is close to described
The madial wall of total capillary, also sets up that there are one tortuous capillary, the tortuous capillary and institutes in total capillary
The straight capillary tube stated is disposed adjacent, and the outlet end of the tortuous capillary is arranged in the inside of total capillary, described
The input end of tortuous capillary stretch out total capillary.
Divide equally capillary spinneret arranged side by side in a kind of outer circle, total capillary inlet end with it is contained
It is sealed using epoxy resin gluing between straight capillary tube and tortuous capillary.
Further, length of the tortuous capillary in total capillary is 5mm, the length of total capillary
For 30mm, it is fixedly connected between total capillary, straight capillary tube and tortuous capillary, the length of straight capillary tube is 70mm,
The length of tortuous capillary is 20mm.
Further, the input end setting of the straight capillary tube is set on the lateral wall of the interface there are one interface
It is equipped with spiral reinforcing rib；It is provided with annular protrusion on the lateral wall of the input end of the tortuous capillary.
The present invention also provides a kind of electric spinning equipments arranged side by side, including the first syringe pump, the second syringe pump, high resiliency silica gel
Pipe, fiber receiver board, high pressure generator, first syringe pump and the first syringe connection, the described first injection
The first spinning liquid, second syringe pump and the second syringe connection, second syringe are provided in device
In be provided with second of spinning liquid, first syringe is by dividing equally capillary in silicone tube and an above-mentioned outer circle
Spinneret connection arranged side by side, second syringe is connected with the interior capillary spinneret arranged side by side of dividing equally of the outer circle, described
Divide equally capillary spinneret lower end setting arranged side by side in outer circle there are one fiber receiver board, fiber receives plate earthing.
Further, the first spinning liquid is added in the first syringe, second of spinning is added in the second syringe
Liquid carries out the preparation of nanofiber arranged side by side by electric field action.
The present invention also provides the above-mentioned methods for preparing nanofiber arranged side by side, include the following steps：
1) the step of first spinning solution of preparation, polyvinylpyrrolidone is added in ethyl alcohol, polyvinylpyrrolidine
The mass ratio of ketone and ethyl alcohol is 8：92, stir evenly the ethanol solution up to PVP；
2) the step of second spinning solution of preparation, ethyl cellulose is added in ethyl alcohol, ethyl cellulose and ethyl alcohol
Mass ratio be 22：78, stir evenly the ethanol solution up to ethyl cellulose；
3) the first spinning solution is added in the first syringe, the second spinning solution is added in the second syringe, then
Open the first syringe pump and the second syringe pump；
4) flow of control both sides spinning solution is 1ml/h, opens high pressure generator, and voltage, which is upgraded to 15kV, to carry out side by side
Electrospinning is to get polyvinylpyrrolidone/ethyl cellulose nanofiber arranged side by side.
Divide equally capillary spinneret arranged side by side in the outer circle of the present invention to be in contact for fluid there are one face, therefore can ensure two
The mutual bonding of fluid streams, the electrostatic repulsion between overcoming by electro-spinning process, obtain the complete Nanowire of parallel construction
Dimension.The spinneret arranged side by side for dividing equally capillary in outer circle using the present invention, is that one kind meeting fluid non-human act under high voltage electric field
Spinneret arranged side by side structural integrity, the Nanowire arranged side by side of size uniformity can be effectively prepared with single step using the spinneret
Dimension, to mass produce and using providing possibility.
Meanwhile the charging of fluid is in irregular shape in traditional metal capillary spinneret arranged side by side, is unfavorable for Taylor
Taper at；And it is unified circular shape and sectional area smaller to divide equally capillary spinneret arranged side by side in the outer circle of the present invention, is had
Conducive to the formation of taylor cone arranged side by side.These advantages divide equally capillary spinneret arranged side by side in the outer circle of the present invention and more meet height
The dirty bulk charging of piezoelectric field and moving law.
The present invention is compared with prior art, and technological progress is significant.It is arranged side by side to divide equally capillary in the outer circle of the present invention
Spinneret application is simple and convenient to operate, is easily controllable, parallel construction feature can be prepared with single step clearly under high voltage electric field
Nanofiber, and extensive amplification production can be carried out by increasing spinneret quantity.
Description of the drawings
Fig. 1 is the monnolithic case schematic diagram for dividing equally capillary spinneret arranged side by side in the outer circle of the present invention, the total capillaries of 1-, 2-
Straight capillary tube, 3- tortuous capillaries.
Fig. 2 is the outlet shooting figure for dividing equally capillary spinneret arranged side by side in the outer circle of the present invention.
Fig. 3 is the structural schematic diagram with the electric spinning equipment arranged side by side for dividing equally capillary spinneret arranged side by side in outer circle, 9- high pressures
The interior respectively capillary spinneret arranged side by side of generator, the first syringe pumps of 10-, the second syringe pumps of 11-, 4- fibers receiver board, 5- outer circles,
6- silicone tubes, the first syringes of 7-, the second syringes of 8-.
Fig. 4 is tied side by side using with the electric spinning equipment arranged side by side preparation PVP/EC for dividing equally capillary spinneret arranged side by side in outer circle
Structure nanofiber process shooting figure.
Fig. 5 is tied side by side using with the electric spinning equipment arranged side by side preparation PVP/EC for dividing equally capillary spinneret arranged side by side in outer circle
Structure nanofiber process compound taylor cone shooting figure side by side.
Fig. 6 is PVP/EC parallel construction nanofiber scanning electron microscope electron microscopes obtained by Application Example.
Fig. 7 is PVP/EC parallel construction nanofiber transmission electron microscope electron microscopes obtained by Application Example.
Specific implementation mode
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, people in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiment 1
The present invention provides capillary spinneret arranged side by side is divided equally in a kind of outer circle, structural schematic diagram is as shown in Figure 1, include
One total capillary 1, in total capillary 1 setting there are one straight capillary tube 2, the outlet end of the straight capillary tube 2 and
The outlet end of total capillary 1 flushes, and the input end of the straight capillary tube 2 stretches out total capillary 1, described
The lateral wall of straight capillary tube 2 is close to the madial wall of total capillary 1, also sets up that there are one curved in total capillary 1
Bent capillary 3, the tortuous capillary 3 and the straight capillary tube 1 are disposed adjacent, the outlet of the tortuous capillary 3
End is arranged in the inside of total capillary 1, and the input end of the tortuous capillary 3 stretches out total capillary 1.
Divide equally capillary spinneret arranged side by side in a kind of outer circle, total capillary inlet end with it is contained
It is sealed using epoxy resin gluing between straight capillary tube and tortuous capillary.
Further, length of the tortuous capillary 3 in total capillary 1 is 5mm, total capillary 1
Length is 30mm, is fixedly connected between total capillary 1, straight capillary tube 2 and tortuous capillary 3, the length of straight capillary tube 3
Length for 70mm, tortuous capillary 3 is 20mm.
Further, the input end setting of the straight capillary tube 2 is there are one interface 12, the internal diameter of the interface 12 from
Successively decrease successively outside to inside, spiral reinforcing rib is provided on the lateral wall of the interface 12；The tortuous capillary 3
It is provided with annular protrusion 13 on the lateral wall of input end, is connected by the protrusion 13 and silicone tube 6.
Embodiment 2
A kind of interior electric spinning equipment arranged side by side for dividing equally capillary spinneret arranged side by side of outer circle with described in embodiment 1, group
At schematic diagram as shown in figure 3,9- high pressure generators, the first syringe pumps of 10-, the second syringe pumps of 11-, 4- fibers receiver board, outside 5-
Divide equally capillary spinneret arranged side by side, 6- silicone tubes, the first syringes of 7-, the second syringes of 8- in circle.
Second syringe 8 of stream of fluid connects tortuous capillary 3 by high resiliency silica gel hose 6；Another fluid streams
First syringe, 7 top is directly connected to divide equally the interface 12 of the straight capillary tube 2 of capillary spinneret 5 arranged side by side in outer circle.The two
Syringe 7,8 is separately fixed on the first syringe pump of fluid 10 and the second syringe pump of fluid 11.In high pressure generator 9 and outer circle
Respectively capillary spinneret 5 arranged side by side connects.Dividing equally capillary 5 lower end of spinneret setting arranged side by side in outer circle, there are one fiber receiver boards
4, fiber receiver board 4 is the hardboard of aluminium foil package, this receives plate earthing.
Application Example 1
Using in the outer circle described in embodiment 2 divide equally capillary spinneret arranged side by side electric spinning equipment arranged side by side to two fluids into
Row electrospinning, to prepare PVP/EC nanofibers arranged side by side, steps are as follows：
(1), the preparation of spinning solution
First spinning solution, polyvinylpyrrolidone (PVP) ethanol solution that mass percent concentration is 8%, preparation side
Method is as follows：The PVP of 8g is added in the ethyl alcohol of 92g, stirs evenly the PVP ethyl alcohol for being 8% up to mass percent concentration
Solution；
Second spinning solution, the ethanol solution for the ethyl cellulose (EC) that mass percent concentration is 22%, preparation method
It is as follows：The EC of 22g is added in the ethyl alcohol of 78g, stirs evenly the EC solution for being 22% up to mass percent concentration；
(2), by obtained by step (1) the first spinning solution and the second spinning solution be added separately in corresponding syringe 7,8, so
After open the first syringe pump 10 and the second syringe pump 11；
(3), the flow of control both sides spinning solution is 1ml/h, opens high pressure generator 9, and voltage, which is upgraded to 15kV, to carry out
Electrospinning arranged side by side, electro-spinning process shooting figure is as shown in figure 4, compound taylor cone is as shown in Figure 5 side by side in the process.Obtained PVP/EC
Nanofiber arranged side by side is collected by fiber receiver sheet.
Application Example 2
It is seen after carrying out surface metal spraying to the PVP/EC nanofibers arranged side by side prepared by Application Example 1 using field scan Electronic Speculum
It examines, the results are shown in Figure 6.Prepared parallel construction collecting nanofibers are uniform and good linear condition is presented, a diameter of
580±70nm.Prepared nanofiber arranged side by side is observed using high-resolution projection electron microscope, the results are shown in Figure 7,
The bilateral i.e. top EC of nanofiber while and parallel construction is clear when following PVP.
The above is only the citing of embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the technical principles of the invention, several improvement can also be made, these improvement also should be regarded as this
The protection domain of invention.
Claims (5)
1. a kind of electric spinning equipment arranged side by side, it is characterised in that：It is received including the first syringe pump, the second syringe pump, silicone tube, fiber
Plate, high pressure generator, first syringe pump and the connection of first syringe are provided with the in first syringe
A kind of spinning liquid, second syringe pump and second syringe connect, and second is provided in second syringe
Kind spinning liquid, first syringe are connected by dividing equally capillary spinneret arranged side by side in silicone tube and an outer circle,
It includes a total capillary to divide equally capillary spinneret arranged side by side in one outer circle, is set in total capillary
The outlet end of straight capillary tube there are one setting, the outlet end of the straight capillary tube and total capillary flushes, and described is straight
The input end of capillary stretches out total capillary, and the lateral wall of the straight capillary tube is close to the interior of total capillary
Side wall, also sets up that there are one tortuous capillary, the tortuous capillary and the straight capillary tubes in total capillary
It is disposed adjacent, the outlet end of the tortuous capillary is arranged in the inside of total capillary, the tortuous capillary
Input end stretch out total capillary, divide equally capillary spinneret arranged side by side in second syringe and the outer circle
Connection, the outer circle is interior to divide equally capillary spinneret lower end setting arranged side by side there are one fiber receiver board, and fiber receives plate earthing.
2. a kind of electric spinning equipment arranged side by side according to claim 1, it is characterised in that：The tortuous capillary is in total capillary
Length in pipe is 5 mm, and the length of total capillary is 30 mm, total capillary, straight capillary tube and the curved hairs
It is fixedly connected between tubule, the length of straight capillary tube is 70 mm, and the length of tortuous capillary is 20 mm, total capillary inlet end
It is sealed using epoxy resin gluing between contained straight capillary tube and tortuous capillary.
3. a kind of electric spinning equipment arranged side by side according to claim 1, it is characterised in that：The input end of the straight capillary tube is set
It sets there are one interface, spiral reinforcing rib is provided on the lateral wall of the interface；The import of the tortuous capillary
It is provided with annular protrusion on the lateral wall at end.
4. utilizing the method as described in claim 1 that electric spinning equipment prepares nanofiber arranged side by side side by side, it is characterised in that：
The first spinning liquid is added in one syringe, second of spinning liquid is added in the second syringe, by electric field action, carries out
The preparation of nanofiber arranged side by side.
5. the method according to claim 4 for preparing nanofiber arranged side by side, it is characterised in that include the following steps：
1）One prepare the first spinning solution the step of, polyvinylpyrrolidone is added in ethyl alcohol, polyvinylpyrrolidone and
The mass ratio of ethyl alcohol is 8：92, stir evenly the ethanol solution up to PVP；
2）The step of one the second spinning solution of preparation, ethyl cellulose is added in ethyl alcohol, the matter of ethyl cellulose and ethyl alcohol
Amount is than being 22：78, stir evenly the ethanol solution up to ethyl cellulose；
3）First spinning solution is added in the first syringe, the second spinning solution is added in the second syringe, is then turned on
First syringe pump and the second syringe pump；
4）The flow for controlling both sides spinning solution is 1ml/h, opens high pressure generator, and voltage, which is upgraded to 15kV, carries out electricity side by side
It spins to get polyvinylpyrrolidone/ethyl cellulose nanofiber arranged side by side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611004751.6A CN106381531B (en) | 2016-11-15 | 2016-11-15 | A kind of outer circle is interior to divide equally capillary spinneret arranged side by side, device for spinning and spinning process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611004751.6A CN106381531B (en) | 2016-11-15 | 2016-11-15 | A kind of outer circle is interior to divide equally capillary spinneret arranged side by side, device for spinning and spinning process |
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| Publication Number | Publication Date |
|---|---|
| CN106381531A CN106381531A (en) | 2017-02-08 |
| CN106381531B true CN106381531B (en) | 2018-08-28 |
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| CN201611004751.6A Expired - Fee Related CN106381531B (en) | 2016-11-15 | 2016-11-15 | A kind of outer circle is interior to divide equally capillary spinneret arranged side by side, device for spinning and spinning process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109385694B (en) * | 2018-09-21 | 2020-02-14 | 华中科技大学 | Spiral graphene fiber and preparation method and application thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3642565A (en) * | 1968-03-21 | 1972-02-15 | Kanegafuchi Spinning Co Ltd | Composite filaments having an elastic crimping property |
| US6454989B1 (en) * | 1998-11-12 | 2002-09-24 | Kimberly-Clark Worldwide, Inc. | Process of making a crimped multicomponent fiber web |
| KR100629813B1 (en) * | 1999-06-08 | 2006-09-29 | 도레이 가부시끼가이샤 | Soft Stretch Yarns and Process for the Preparation Thereof |
| KR100481093B1 (en) * | 2003-04-24 | 2005-04-07 | 주식회사 휴비스 | High Self-Crimping Polyester conjugate yarn and process of producing thereof |
| CN104611773B (en) * | 2015-01-19 | 2017-01-04 | 上海理工大学 | A kind of decentralized casing spinneret arranged side by side and application thereof |
| CN104562245B (en) * | 2015-01-28 | 2017-02-22 | 河南省龙都生物科技有限公司 | Polylactic acid double-component composite fiber double-spray-orifice parallel type spinning component |
| CN105696197B (en) * | 2016-03-22 | 2018-01-19 | 东华大学 | A kind of c-type core-shell nano tunica fibrosa and its eccentric shaft electrostatic spinning preparation method |
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