CN113249806B - Device and method for preparing bicomponent fiber based on melt differential centrifugal spinning - Google Patents
Device and method for preparing bicomponent fiber based on melt differential centrifugal spinning Download PDFInfo
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- CN113249806B CN113249806B CN202110667570.6A CN202110667570A CN113249806B CN 113249806 B CN113249806 B CN 113249806B CN 202110667570 A CN202110667570 A CN 202110667570A CN 113249806 B CN113249806 B CN 113249806B
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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
- D01D5/18—Formation of filaments, threads, or the like by means of rotating spinnerets
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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
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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
- D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
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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
- D01D5/28—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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The invention discloses a device and a method for preparing bicomponent fibers based on melt differential centrifugal spinning, which belong to the field of centrifugal spinning. Wherein the laminator and lamination diversion apparatus laminate the molten polymer fluid into an alternating multilayer composite; the fan-shaped flow distribution disc can enable the melt to be quickly spread thin and keep the melt lamination state; the edge of the centrifugal differential disc adopts a radial comb-tooth structure, and the laminated melt is spun into fibers through centrifugation; the air draft device adopts a semicircular notch to convert into a circular receiving port to gather and collect the fibers. The device combines the lamination device and the melt differential centrifugal spinning device, reduces the thickness of a melt layer by utilizing the unique performance of alternate lamination of the lamination device, realizes orderly collection by adopting the air suction device, and provides a new method for producing the bicomponent fiber.
Description
Technical Field
The invention relates to a device and a method for centrifugal spinning of a laminated melt based on calculus, belonging to the field of centrifugal spinning.
Background
Bicomponent fibers are fibers that are composed of two different polymers that are combined together in a certain manner. Bicomponent fibers possess the properties and advantages of two polymers, one for providing its desired physical properties and the other for exhibiting specific functions, and are therefore widely used in filtration, optics, electrical conduction, flame retardance, and the like.
Chinese patent CN101798714B discloses extrusion molding to obtain a bicomponent fiber using a spinneret comprising a plurality of spinneret orifices including backbone extrusion orifices arranged in a radial pattern and split extrusion orifices spaced apart by the backbone extrusion orifices, the nascent fiber comprising a backbone portion extruded from the backbone extrusion orifices and a split portion extruded from the split extrusion orifices. The bicomponent fiber prepared by the method has high efficiency and good uniformity; however, the fiber is simply extruded without external force drawing, so the fiber diameter is relatively large.
Chinese patent CN104797749B discloses an apparatus for preparing bicomponent fibers using a spinneret with two nozzles. The method can prepare bicomponent fibers with various structures, but the bicomponent fibers are ejected by two spray heads and are not easy to combine.
The melt centrifugal spinning technology is a method for forming fibers after the melt is solidified by throwing out polymer melt from pores against surface tension by centrifugal force generated by a high-speed rotating device.
US20090280325A1 discloses different types of spinning devices including spinning discs with four channel drainage channels, injectors of different nozzle shapes, and spinning holes with metal grids as the spinners, etc., to try spinning PAN, PEO, PS and ABS etc. conventional materials and obtain fibers with diameters around 1 micron, but the spinning efficiency is low when implemented for needles and small holes.
In chinese patent CN104674360B, it is proposed that the superfine fiber is finally formed by thinning, differentiating and refining under the action of centrifugal force, high-speed air flow and adhesive force of melt on conical surface with the aid of air flow and being thrown out at high speed. This method produces fibers with high efficiency, but the fibers are thrown out circumferentially and are difficult to collect continuously.
The calculus stacking is to add different materials into two or more extruders to melt and plasticize respectively, the melt is compounded into double-layer or multi-layer melt in a combiner, and the double-layer or multi-layer melt is divided into a plurality of strands through a laminator, and the multi-strand melt is twisted, widened and converged to complete one-time stacking. Through a plurality of cascade laminators, the polymer melt is repeatedly laminated to obtain the alternating multi-layer composite material, and the thickness of each layer can reach the nanometer level. In the process of repeatedly laminating polymer melt, the thickness of the polymer layer is continuously thinned under the continuous action of drag flow and shear flow, but the calculus lamination needs a stable runner to keep a lamination state, so the polymer melt is widely used for extrusion preparation of composite material sheets or films, and is rarely applied to melt processing of centrifugal spinning.
Chinese patent CN103590122B proposes a design of a flat-mouth inlet-outlet calculus laminator and the use of gas-assisted internal cone nozzle, combining lamination and melt electrospinning, while melt spinning two incompatible polymers. The advantage of this method is that the fibers are very fine, but the electrospinning efficiency is low and a complex electric field environment is required.
Disclosure of Invention
Aiming at the prior art, the invention provides a device and a method for preparing bicomponent fiber based on melt differential centrifugal spinning, which aim to combine a lamination device and melt differential centrifugal spinning through the design of a differential integration lamination device and the application of a centrifugal differential spinning disk, and simultaneously melt spin two incompatible polymers to obtain multilayer bicomponent composite fiber.
The technical scheme provided by the invention for realizing the purposes is as follows: a device for preparing bicomponent fibers based on melt differential centrifugal spinning comprises a melt conveying device, a connecting flange, a confluence device, a lamination shunt device, a heating temperature measuring device, a fan-shaped shunt disc, a centrifugal differential disc, a high-speed motor, a centrifugal disc heating ring, an electric slip ring, an exhaust device and a collecting roller, wherein the melt conveying device is connected with the inlet of the confluence device through the connecting flange, the outlet of the confluence device is connected with the melt inlet of the lamination device, the outlet of the lamination device is connected with the lamination shunt device, the lamination shunt device maintains the temperature of a flow channel under the heating of the heating temperature measuring device, the fan-shaped shunt disc is connected with the fan-shaped shunt device, the fan-shaped shunt disc conveys laminated melt to the centrifugal differential disc, the centrifugal disc heating ring is connected with the electric slip ring to adjust the temperature of the centrifugal differential disc, the centrifugal differential disc is driven by the high-speed motor to perform centrifugal spinning, air flow of an air compressor enters the exhaust device through an air flow inlet pipe to enable negative pressure to be generated in the exhaust device, and spun fibers are rolled up after reaching the receiving roller through the exhaust device.
The invention relates to a device for preparing bicomponent fiber based on melt differential centrifugal spinning, which mainly comprises a fan-shaped runner and a heating temperature measuring device, wherein the height of the fan-shaped runner is narrowed along the radial direction. The center angle of the fan-shaped flow channel is generally 45-135 degrees, preferably about 90 degrees and maximally less than 180 degrees. Melt distribution with too small an angle is not very thin, and the diameter of the wire is too large, which is not beneficial to wire collection. The molten laminated fluid flows into the centrifugal differential spinning disk from the fan-shaped flow channel, and a heating temperature measuring device is arranged around the part through which the melt flows. The laminated melt enters the fan-shaped flow channel and is uniformly spread and thinned, and is extruded into a centrifugal differential disc. The melt can remain in a stable, layered state during this process.
According to the device for preparing the bicomponent fiber based on melt differential centrifugal spinning, the edge of the centrifugal differential disk adopts a radial comb-tooth structure, laminated melt enters the comb-tooth structure under the action of centrifugal force after being extruded by the fan-shaped flow dividing flow passage, hundreds of annular uniformly distributed comb teeth can conduct primary differential refinement on the melt, the melt is further thinned under the conical surface under the action of pulling between the centrifugal force and adhesive force, so that secondary refinement of melt jet flow is achieved, and the laminated melt can still keep a laminated state under high-speed rotation due to the small width of the comb-tooth structure; the end of the edge of the centrifugal differential disc is provided with a retainer ring structure, a large number of micropores are formed between the retainer ring and the comb-shaped structure, the comb-shaped structure corresponds to the micropores, and the phenomenon of uneven fiber quality caused by melt splashing in the spinning process can be prevented.
The invention relates to a device for preparing bicomponent fiber based on melt differential centrifugal spinning, wherein an air draft device adopts a semicircular notch to convert into a round receiving port, air flow of an air compressor enters the air draft device through an upper air flow inlet pipe and a lower air flow inlet pipe, the air flow flows out from an air cavity to a round outlet, high-speed air flow enables negative pressure to be generated in the receiving port, and the fiber is sucked in under pressure difference and naturally gathered to the round outlet under traction of the air flow.
The method for spinning by adopting the device for preparing the bicomponent fiber based on melt differential centrifugal spinning comprises the following steps: the first step, adding a polymer into a combiner through a first melt conveying device and a second melt conveying device, and superposing two incompatible polymer melts through the combiner and then entering a lamination device; the second step, two kinds of molten fluid flow into the flat-mouth outflow lamination device through enough flat mouths to double the layer number, the third step, two kinds of molten fluid flow are doubled again after passing through the lamination flow dividing device and are divided into two flows into fan-shaped flow dividing discs, namely the relation formula of the total layer number Z of the composite materials prepared by the lamination device and the lamination flow dividing device and the lamination device number i is: z=2×4 i X 4, i is an integer greater than 2, the greater i, the thinner the melt layer, the alternating multilayer composite can be obtained; fourthly, spreading and extruding the melt into a centrifugal differential disc driven by a high-speed motor through a fan-shaped flow distribution disc, regulating the temperature of the centrifugal differential disc by a heating ring of the centrifugal disc under the connection of an electric slip ring, and carrying out centrifugal spinning on the centrifugal differential disc under the driving of the high-speed motor to obtain fibers; and fifthly, the air flow of the air compressor enters the air extracting device through the air flow inlet pipe so that negative pressure is generated inside the air extracting device, and spun fibers are collected by the receiving roller through the air extracting device.
The beneficial effects of the invention are as follows:
(1) The invention discloses a device and a method for preparing bicomponent fibers based on melt differential centrifugal spinning, which are used for simultaneously carrying out melt differential centrifugal spinning on two incompatible polymers to obtain ordered multilayer bicomponent fibers and solve the production problem of the bicomponent fibers.
(2) The device and the method for preparing the bicomponent fiber based on melt differential centrifugal spinning utilize the fan-shaped runner as a melt conveying device, can thin the melt and stably maintain the lamination effect of the melt, and provide for obtaining finer fibers.
(3) According to the device and the method for preparing the bicomponent fiber based on melt differential centrifugal spinning, the groove structure of the centrifugal differential disc ensures that the laminated melt keeps a laminated state in rotation, and each fiber formed is of a stable bicomponent structure.
(4) The invention discloses a device and a method for preparing bicomponent fibers based on melt differential centrifugal spinning, which utilize a semicircular notch to round port exhaust device and utilize a negative pressure environment to gather fibers, so that the problem that centrifugal spinning is difficult to collect is solved.
Drawings
FIG. 1 is a front view of an apparatus for preparing bicomponent fibers based on melt differential centrifugal spinning according to the present invention.
Fig. 2 is a top view of a fan-shaped diverter tray, centrifugal differentiating tray, and collecting apparatus.
Fig. 3 is a schematic view of the fan-shaped diverter tray in fig. 1.
Fig. 4 is a schematic view of the centrifugal differential disk structure of fig. 1.
Fig. 5 is a schematic structural view of the air extracting device in fig. 1.
Fig. 6 is a cross-sectional view of fig. 5.
In the figure: the device comprises a first melt conveying device, a first 2-connecting flange, a 3-confluence device, a 4-lamination device, a 5-lamination flow distribution device, a 6-heating temperature measuring device, a 7-fan-shaped flow distribution disc, an 8-centrifugal differential disc, a 9-centrifugal disc heating ring, a 10-electric slip ring, a 11-high-speed motor, a 12-air draft device, a 13-air flow inlet pipe, a 14-receiving roller, a 15-melt conveying device II and a 16-connecting flange II.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
The invention relates to a device for preparing bicomponent fiber based on melt differential centrifugal spinning, which is shown in fig. 1 and 2, and comprises a melt conveying device I, a connecting flange I2, a confluence device 3, a lamination device 4, a lamination diversion device 5, a heating temperature measuring device 6, a fan-shaped diversion disk 7, a centrifugal differential disk 8, a centrifugal disk heating ring 9, an electric slip ring 10, a high-speed motor 11, an air draft device 12, an air flow inlet pipe 13, a receiving roller 14, a melt conveying device II 15 and a connecting flange II 16.
The melt conveying device I and the melt conveying device II 15 can adopt single screw extruders, polypropylene and polycaprolactone are respectively added as raw materials, the raw materials are connected with the inlet of a confluence device 3 through a connecting flange I2 and a connecting flange II 16, the outlet of the confluence device 3 is connected with the melt inlet of a lamination device 4, the outlet of the lamination device 4 is connected with a lamination flow distribution device 5, the lamination flow distribution device 5 keeps the flow passage temperature under the heating of a heating temperature measuring device 6, the fan-shaped flow distribution disc 7 is connected, the fan-shaped flow distribution disc 7 conveys lamination melt to a centrifugal differential disc 8, a centrifugal disc heating ring 9 adjusts the temperature of the centrifugal differential disc 8 under the connection of an electric slip ring 10, the centrifugal differential disc 8 rotates at a high speed under the driving of a high-speed motor 11 for centrifugal spinning, the air flow of an air compressor enters an air draft device through an air flow inlet pipe 13 to enable negative pressure to be generated inside the air draft device, and spun fibers are rolled up after reaching a receiving roller 14 through the air draft device 12.
The invention relates to a device for preparing bicomponent fiber based on melt differential centrifugal spinning, which is characterized in that two molten fluids flow into a flat-mouth outflow lamination device through a flat-mouth twice, so that the layer number is doubled, namely the total layer number Z=2×4 of a composite material prepared by the lamination device and a lamination flow distribution device 2 X 4 = 128 layers, resulting in an alternating multilayer composite.
The invention relates to a device for preparing bicomponent fiber based on melt differential centrifugal spinning, which mainly comprises a fan-shaped runner and a heating temperature measuring device 6, wherein the height of the fan-shaped runner is narrowed along the radial direction, as shown in figure 3, the radius of the fan-shaped runner is 10cm, the width of an inlet is 4mm, the width of an outlet is 2mm, laminated melt is uniformly spread and thinned after entering the fan-shaped runner, the laminated melt is extruded into the centrifugal differential disc, and the heating temperature measuring device 6 is heated and kept at 180 ℃. As shown in fig. 3, the molten laminated fluid enters the fan-shaped split disks through the flat-mouth runners respectively, and is extruded after being thinned.
According to the device for preparing the bicomponent fiber based on melt differential centrifugal spinning, the edge of the centrifugal differential disk adopts a radial comb-tooth-shaped structure, as shown in fig. 4, the tail end of the edge is provided with a check ring structure, and a large number of micropores are formed between the check ring and the comb-tooth-shaped structure. Wherein the length of the radial comb teeth is 15mm, the tail of the groove is 1mm multiplied by 1mm, the rotating speed of the centrifugal disk is 5000 revolutions per minute, and the heating ring of the bottom centrifugal disk is stabilized at 180 ℃. As shown in fig. 4, the centrifugal force and the adhesive force act together to quickly differentiate and refine the melt jet into ultrafine fibers by the centrifugal force and the adhesive force of the centrifugal differentiating disk 8.
The invention relates to a device for preparing bicomponent fiber based on melt differential centrifugal spinning, wherein polymer fiber ejected from a centrifugal differential disc is gathered by an air extracting device 12 to a receiving roller 14 for collection, and the air extracting device 12 is shown in fig. 5 and 6.
The method for spinning by adopting the device for preparing the bicomponent fiber based on melt differential centrifugal spinning comprises the following steps: the first step, adding two kinds of polymer polypropylene and polycaprolactone into a combiner 3 through two single-screw extruders of a first melt conveying device 1 and a second melt conveying device 15, and adding two incompatible polymer melts into a laminator after being overlapped through the combiner 3; secondly, two molten fluids flow into the flat-mouth outflow lamination device through two flat-mouth; step three, the two molten fluids are doubled and divided into two parts to enter a sector-shaped flow distribution disc 7 after passing through a lamination flow distribution device, namely the total layer number Z of the composite material prepared by the lamination device and the lamination flow distribution device is 128 layers; fourthly, spreading and extruding the melt from the fan-shaped flow distribution disc 7 into a centrifugal differential disc 8 driven by a high-speed motor 11, regulating the temperature of the centrifugal differential disc 8 by a centrifugal disc heating ring 9 under the connection of an electric slip ring 10, and carrying out centrifugal spinning by the centrifugal differential disc 8 under the driving of the high-speed motor 11 to obtain fibers; fifth, the air flow of the air compressor enters the suction device through the air inlet pipe 13 so that negative pressure is generated inside the suction device, and the spun fibers are collected by the suction device 12 to the receiving roller 14.
Claims (7)
1. A device for preparing bicomponent fiber based on melt differential centrifugal spinning is characterized in that: the device comprises a melt conveying device, a connecting flange, a combiner, a laminator, a lamination flow dividing device, a heating temperature measuring device, a fan-shaped flow dividing disc, a centrifugal differential disc, a high-speed motor, a centrifugal disc heating ring, an electric slip ring, an exhaust device and a collecting roller, wherein the melt conveying device is connected with the inlet of the combiner through the connecting flange, the outlet of the combiner is connected with the melt inlet of the laminator, the outlet of the laminator is connected with the lamination flow dividing device, the lamination flow dividing device keeps the temperature of a runner under the heating of the heating temperature measuring device, the fan-shaped flow dividing disc is connected with the fan-shaped flow dividing disc, the fan-shaped flow dividing disc conveys laminated melt to the centrifugal differential disc, the centrifugal disc heating ring adjusts the temperature of the centrifugal differential disc under the connection of the electric slip ring, the centrifugal differential disc rotates at a high speed under the driving of the high-speed motor, the air flow of the air compressor enters the exhaust device through an air flow inlet pipe to enable negative pressure to be generated inside the exhaust device, and spun fibers are wound up after reaching the receiving roller through the exhaust device.
2. The apparatus for preparing bicomponent fibers based on melt differential centrifugal spinning according to claim 1, wherein: the number of layers of the melt passing through the lamination device is doubled again after passing through the lamination flow dividing device and is changed into two strands, and the two strands enter two flow passages of the fan-shaped flow dividing disc respectively.
3. The apparatus for preparing bicomponent fibers based on melt differential centrifugal spinning according to claim 1, wherein: the fan-shaped flow dividing disc mainly comprises a fan-shaped flow passage and a heating temperature measuring device, the height of the fan-shaped flow passage is narrowed along the radial direction, molten laminated fluid is thinned and extruded from the fan-shaped flow passage to the centrifugal differential spinning disc, and the heating temperature measuring device is arranged around a part through which the melt flows.
4. The apparatus for preparing bicomponent fibers based on melt differential centrifugal spinning according to claim 1, wherein: the center angle of the fan-shaped flow channel is generally 45-135 degrees.
5. The apparatus for preparing bicomponent fibers based on melt differential centrifugal spinning according to claim 1, wherein: the centrifugal differential disc edge adopts radial comb-tooth-shaped structures, laminated melt enters the comb-tooth-shaped structures under the action of centrifugal force after being extruded by the fan-shaped flow distribution channels, the tail end of the centrifugal differential disc edge is provided with a check ring structure, a large number of micropores are formed between the check ring and the comb-tooth-shaped structures, and the comb-tooth-shaped structures and the micropores correspond to each other.
6. The apparatus for preparing bicomponent fibers based on melt differential centrifugal spinning according to claim 1, wherein: the air draft device adopts a semicircular notch to change into a round receiving port, air flow of the air compressor enters the air draft device through an upper air flow inlet pipe and a lower air flow inlet pipe, the air flow flows out from the air cavity to a round outlet, high-speed air flow enables negative pressure to be generated in the receiving port, fibers are sucked under pressure difference, and the fibers are naturally gathered to the round outlet under traction of the air flow.
7. A method for preparing bicomponent fiber based on melt differential centrifugal spinning is characterized in that: the first step, adding a polymer into a combiner through a first melt conveying device and a second melt conveying device, and superposing two incompatible polymer melts through the combiner and then entering a lamination device; the second step, two kinds of molten fluid flow into the flat-mouth outflow lamination device through enough flat mouths to double the layer number, the third step, two kinds of molten fluid flow are doubled again after passing through the lamination flow dividing device and are divided into two flows into fan-shaped flow dividing discs, namely the relation formula of the total layer number Z of the composite materials prepared by the lamination device and the lamination flow dividing device and the lamination device number i is: z=2×4 i X 4, i is an integer greater than 2, and the larger i is, the thinner the melt layer is, so that the nanoscale alternating multilayer composite material is obtained; extruding the melt from a fan-shaped flow distribution disc into a centrifugal differential disc driven by a high-speed motor, regulating the temperature of the centrifugal differential disc by a heating ring of the centrifugal disc under the connection of an electric slip ring, and carrying out centrifugal spinning by the centrifugal differential disc under the drive of the high-speed motor to obtain fibers; and fifthly, the air flow of the air compressor enters the air extracting device through the air flow inlet pipe so that negative pressure is generated inside the air extracting device, and spun fibers are collected by the receiving roller through the air extracting device.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3877211A (en) * | 1974-03-13 | 1975-04-15 | Alexandr Ivanovich Saveliev | Machine for ringless spinning of textile fibres |
| RU2009135090A (en) * | 2007-03-21 | 2011-04-27 | ОУЭНС КОРНИНГ ИНТЕЛЛЕКЧУАЛ КЭПИТАЛ, ЭлЭлСи (US) | METHOD AND DEVICE (OPTIONS) FOR PRODUCING FIBERS FROM MELTED MINERAL RAW MATERIAL |
| CN103590122B (en) * | 2013-12-02 | 2016-06-01 | 北京化工大学 | A kind of melt electrostatic spinning device based on infinitesimal analysis stacking and method |
| JP6076322B2 (en) * | 2014-12-04 | 2017-02-08 | 株式会社日本製鋼所 | Centrifugal spinning apparatus and method |
| CN112779614A (en) * | 2021-02-05 | 2021-05-11 | 大连信德新材料科技有限公司 | Novel pitch-based carbon fiber precursor preparation device and preparation method thereof |
| CN216107346U (en) * | 2021-06-16 | 2022-03-22 | 北京化工大学 | Device for preparing bi-component fiber based on melt differential centrifugal spinning |
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