CN110735191A - method and device for preparing super-large-area suspended nano-fiber net - Google Patents
method and device for preparing super-large-area suspended nano-fiber net Download PDFInfo
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- CN110735191A CN110735191A CN201911042559.XA CN201911042559A CN110735191A CN 110735191 A CN110735191 A CN 110735191A CN 201911042559 A CN201911042559 A CN 201911042559A CN 110735191 A CN110735191 A CN 110735191A
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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
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
-
- 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
- D01D5/0007—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
-
- 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
- D01D5/0092—Electro-spinning characterised by the electro-spinning apparatus characterised by the electrical field, e.g. combined with a magnetic fields, using biased or alternating fields
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/06—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated alcohols, e.g. polyvinyl alcohol, or of their acetals or ketals
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/10—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention belongs to the technical field of electrostatic spinning, and relates to a device and a method for preparing a suspended nano-fiber net with an ultra-large area, wherein the device mainly comprises a high-voltage generating device, a liquid supply device and a spinning collecting mechanism.
Description
Technical Field
The invention belongs to the technical field of electrostatic spinning, and relates to a device and a method for preparing a suspended nanofiber web with an oversized area.
Background
From the law of industrial technology development, application and market development, the technology enters the early stage of industrial application, and can quickly form a market scale after realizing breakthrough and rapidly increase.
The traditional electrostatic spinning is that the prepared polymer is sprayed out through a spray head, a high-voltage electric field is applied to the spray head outlet and the collection spinning to form a cone shape, namely a Taylor cone (Taylor cone), when the applied high voltage exceeds threshold, the electric field force exceeds the surface adhesive force of the polymer and moves along the direction of the electric field, so that the polymer is sprayed to form a threadlike shape, and a slender fiber is formed through a whiping process.
The solidification distance refers to the distance between the spinning nozzle and the receiving device, the size of the solidification distance influences the intensity of the electrostatic field, in addition, influences the spinning lengthening process, if the solidification distance is too short, the solvent is not easy to completely volatilize when reaching the receiving surface, the phenomenon that the spinning is too thick and uneven is stronger, the solidification distance is increased, the electric field intensity is reduced, the time that the jet flow is stretched is prolonged, the solvent is thoroughly volatilized, and the formation of the nanofiber with small diameter is facilitated.
Disclosure of Invention
In order to solve the problems, the invention provides a device and a method for preparing a suspended nano-fiber net with an ultra-large area, which can realize the preparation of the suspended nano-fiber net with the ultra-large area by adjusting the position of an injection head and better control the uniformity of the nano-fiber net through the rotation of a receiving device.
The technical scheme of the invention is as follows:
A device for preparing a suspended nanofiber web with an oversized area mainly comprises a high-pressure generating device, a liquid supply device and a spinning collecting mechanism;
the high-voltage generating device is a high-voltage generator 1;
the liquid supply device comprises a needle tube type spinning nozzle 2, an insulating support rod 3 and a guide rail 4; the anode of the high-voltage generator 1 is connected with the front end of the needle tube type spinning nozzle 2, and the cathode of the high-voltage generator is connected with the electric brush 10; the needle tube type spinning nozzle 2 is fixed on the plane guide rail 4 through the insulation support rod 3, insulation between the high-voltage generator 1 and the plane guide rail 4 is guaranteed, the plane guide rail 4 is driven by the linear motor to adjust the position of the needle tube type spinning nozzle 2 above the metal circular ring 9, the needle tube type spinning nozzle 2 starts spinning from the edge of the metal circular ring 9, and finally the whole metal circular ring 9 is covered.
The spinning collecting device comprises a belt, a belt pulley 5, a metal circular ring supporting part 6, a helical gear group 7, an insulating supporting frame 8, a metal circular ring 9 and an electric brush 10; the belt is arranged on a belt pulley 5, the belt pulley 5 is driven by a motor, and the belt pulley 5 is connected with a bevel gear set 7 through a rod to change the transmission direction; the metal circular ring supporting part 6 is of a rod-shaped structure, the insulating support frame 8 is fixed at the top of the metal circular ring supporting part 6, the helical gear set 7 is installed at the bottom of the metal circular ring supporting part 6, and the metal circular ring 9 is fixed on the insulating support frame 8; the belt pulley 5 transmits the rotary motion to the metal circular ring supporting part 6 so as to drive the metal circular ring 9 to rotate, and an external electric field for driving the rotary motion is ensured not to generate external electric field interference on the electrostatic spinning process; the brush 10 is in contact with the outer edge of the metal ring 9.
The height of the metal circular ring supporting part 6 is at least 50cm, the metal circular ring supporting part 6 and the insulating support frame 8 can be made of high-strength polyethylene materials or insulating materials with the same properties, and the helical gear set 7 is made of alloy materials to ensure the strength of the gear.
A method for preparing a suspended nanofiber web with an oversized area comprises the following steps:
, starting high voltage generator to provide positive and negative voltage to the needle tube spinning nozzle 2 and the electric brush 10, and stabilizing the voltage at 10-20KV while ensuring the air humidity below 39%.
The second step is that: the spinning collecting device is started, and the motor drives the metal ring 9 to rotate.
The third step: the linear motor drives the guide rail 4 to move, and the needle tube type spinning nozzle 2 is adjusted to be positioned above the metal suspended metal circular ring 9.
The fourth step: opening the liquid supply device and supplying spinning spray liquid to the needle tube type spinning nozzle 2; the needle tube type spinning nozzle 2 is moved to the position right above the edge of the metal circular ring 9 through the plane guide rail 4 to start spinning; wherein the distance between the needle tube type spinning nozzle 2 and the metal ring 9 is 20-30 cm, the spinning speed is 1.2-2.5 ml/h, the air humidity is kept below 39%, and the temperature is room temperature.
Fifthly, the position of the needle tube type spinning nozzle 2 is adjusted through the guide rail 4, so that the needle tube type spinning nozzle 2 is gradually close to the center of the circle from the edge of the metal ring 9, the spun yarn firstly falls on the edge of the metal ring 9 under the action of electrostatic force, then the spun yarn gradually moves from the edge to the suspended center, and the spun yarn layers close to the center of the circle are lapped on the spun yarn positioned at the edge of the metal ring 9, so that the spinning of the whole suspended metal ring with the ultra-large area is realized, and the suspended nano-fiber net with the ultra-large area is obtained.
The spinning solution is PVA polyvinyl alcohol 1788, PVP polyvinyl pyrrolidone and PAN polyacrylonitrile solution, and the concentration is 12-18 wt%.
The invention has the following effects and benefits:
(1) in order to realize the ultra-large area spinning, an electrode is connected to the outer side, a jet orifice moves towards the edge of the suspended metal ring to form an electric field with the edge, the outermost layer is firstly spun through the rotation of the suspended metal ring, and then a spinning nozzle gradually moves towards the inner side to form complete suspended spinning.
(2) In order to weaken the influence of an electric field applying additional motion on the electrostatic spinning process as much as possible, the invention uses a connecting rod with transmission, the rod finally transmits the rotary motion to the suspended metal ring through gear transmission, and the guide rail realizes the motion along the guide rail through a motor.
(3) Compared with the prior art, the invention can change the strength of an electric field by controlling the spray head to move freely in a plane, when the spray head is positioned right above the outer ring of the metal circular ring in a hanging way, the electric field intensity is maximum, the multi-strand jet flow can be sprayed under the action of a high-voltage electrostatic field, when the spray head is positioned right above the circle center, the electric field intensity is weakened, the center spinning of the hanging nano net is facilitated, the structure is simple, the influence of an external electric field on the spinning process is weakened as much as possible, and the large-area spinning and the regulation can be realized.
Drawings
FIG. 1 is a schematic overall view of the apparatus of the present invention;
FIG. 2 is a schematic view of the whole metal ring suspended in the air;
FIG. 3 is a schematic in-plane guide rail;
fig. 4 is a schematic view of the contact between the brush and the metal ring.
In fig. 1: 1 high-voltage power supply generator, 2 needle tube spinning nozzles, 3 insulating support rods, 4 guide rails, 5 transmission belts, 6 metal ring supporting parts, 7 bevel gear sets, 8 insulating support frames, 9 metal rings and 10 brushes.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings and technical solutions.
As shown in figures 1-4, the device for preparing the suspended nano-fiber net with the ultra-large area mainly comprises a high-voltage generating device, a liquid supplying device and a spinning collecting mechanism, wherein the high-voltage generating device is a high-voltage generator 1, the liquid supplying device comprises a needle tube type spinning nozzle 2, an insulating support rod 3 and a guide rail 4, and the spinning collecting device comprises a belt, a belt pulley 5, a metal circular ring supporting part 6, a bevel gear group 7, an insulating support frame 8, a metal circular ring 9 and an electric brush 10.
The plane guide rail 4 is driven by a linear motor, so that the needle tube type spinning nozzle 2 can move more stably in the plane, and the needle tube type spinning nozzle 2 can move freely above the metal ring 9.
The lower part of the metal ring 9 is connected with an insulating support frame 8 to enable the center of the metal ring to be suspended, and in order to ensure that the electric field of a power mechanism driving the spinning ring to be received does not influence the electrostatic spinning process, the metal ring is driven to isolate interference and supported by a metal ring supporting part 6. The edge of the metal circular ring 9 is contacted with the negative electrode of the high-voltage generator 1 through the electric brush 10, so that the rotary motion is ensured, in order to realize the spinning with the ultra-large area, the needle head of the needle tube type spinning nozzle 2 can freely move in a plane through a guide rail, so that the free adjustment above the metal circular ring 9 can be realized, and the uniform and large-area preparation of the nano-fiber net can be further realized.
The device is used for preparing the suspended nano-fiber net with the ultra-large area, and the specific embodiment is as follows:
example 1:
(1) selection of materials for electrostatic spinning
In the embodiment, 20 ten thousand grade PVA polyvinyl alcohol 1788 material is adopted, PVP polyvinyl pyrrolidone and PAN polyacrylonitrile can be selected, the material has the characteristics of good rebound resilience and curling property and excellent film forming property, the PVA polyvinyl alcohol 1788 is preferably dissolved in an aqueous solution by heating at 65-75 ℃ due to good solubility, and gel is not easily generated during spinning to block a spinning nozzle.
(2) Electrospun fiber preparation
6g of PVA polyvinyl alcohol 1788 with molecular weight of 20 ten thousand grades is weighed and added into 40ml of deionized water to prepare a solution with the mass ratio of 15%. Stirring in water bath at 70 ℃ until the spinning solution is completely dissolved; adding the completely dissolved PVA1788 solution into a needle tube type spinning nozzle 2, adjusting the voltage of a high-voltage power supply generator 1 to be stabilized at 15KV, adjusting the distance between a spinning nozzle and a receiving device to be 25cm, adjusting the injection speed of the injection nozzle to be 1.5ml/h, and maintaining the air humidity not to exceed 39%.
(3) Electric field interference between isolated electrostatic field and external power mechanism
When the suspended nano net with the ultra-large area is prepared, due to the introduction of rotary motion and the planar movement of the needle tube type spinning nozzle 2, an external power source is needed for driving, in order to avoid the influence on the electrostatic process, the rotary motion is transmitted to the metal ring 9 through a rod through transmission, the length of the supporting part 6 is selected to be 1m, and the electric field of an external transmission mechanism is ensured not to influence the spinning process. Meanwhile, in order to ensure the distance between the guide rail 4 and the metal ring 9, the needle tube type spinning nozzle 2 is supported above the metal ring 9 by adopting the insulating support rod 3.
(4) Regulating electrostatic spinning nozzle
Firstly, the nozzle of the needle tube type spinning nozzle 2 is adjusted right above the edge of the metal ring 9, the potential of the whole circular ring is equal when the metal ring 9 is electrified, the needle tube type spinning nozzle 2 only needs to be positioned right above a certain edge, the distance from the receiving device is 25cm at the moment, the spinning firstly falls on the edge of the metal ring 9 under the action of electrostatic force, the metal ring 9 enables the whole outer ring to obtain uniform spinning through rotation, the solvent of the spinning falling on the receiving device can be volatilized by acceleration in the rotating process, the spinning close to the outer side is connected to , the nozzle of the needle tube type spinning nozzle 2 is moved to the circle center at the speed of 100mm/min, meanwhile, the solidification distance is gradually changed along with the movement of the nozzle of the needle tube type spinning nozzle 2, the volatilization of the solvent of the spinning is increased, the spinning is better connected to , and the final position of the spinning nozzle 2 is positioned at the circle center of the suspended metal ring 9 until the spinning.
Example 2:
the experimental procedure was the same as in example 1, with the following specific parameters:
the spinning solution is PVP polyvinylpyrrolidone solution with the concentration of 12% by mass ratio; the voltage is 10 KV; the distance between the needle tube type spinning nozzle 2 and the metal ring 9 is 20cm, the spinning speed is 1.2ml/h, and the air humidity is kept below 39%. Also, a suspended nanofiber web with an ultra-large area can be obtained.
Example 3:
the experimental procedure was the same as in example 1, with the following specific parameters:
the spinning solution is PAN polyacrylonitrile solution with the concentration of 18% by mass; the voltage is 20 KV; the distance between the needle tube type spinning nozzle 2 and the metal ring 9 is 30cm, the spinning speed is 2.5ml/h, and the air humidity is kept below 39%. Also, a suspended nanofiber web with an ultra-large area can be obtained.
Claims (5)
- The device for preparing the suspended nano-fiber web with the ultra-large area is characterized by mainly comprising a high-pressure generating device, a liquid supply device and a spinning and collecting mechanism;the high-voltage generating device is a high-voltage generator (1);the liquid supply device comprises a needle tube type spinning nozzle (2), an insulating support rod (3) and a guide rail (4); the anode of the high-voltage generator (1) is connected with the front end of the needle tube type spinning nozzle (2), and the cathode of the high-voltage generator is connected with the electric brush (10); the needle tube type spinning nozzle (2) is fixed on the plane guide rail (4) through the insulation support rod (3) to ensure insulation between the high-voltage generator (1) and the plane guide rail (4), the plane guide rail (4) is driven by a linear motor to adjust the position of the needle tube type spinning nozzle (2) above the metal circular ring (9), so that the needle tube type spinning nozzle (2) starts spinning from the edge of the metal circular ring (9), and finally the whole metal circular ring (9) is covered;the spinning collecting device comprises a belt, a belt pulley (5), a metal circular ring supporting part (6), a bevel gear set (7), an insulating supporting frame (8), a metal circular ring (9) and an electric brush (10); the belt is installed on the belt pulley (5), the belt pulley (5) is driven by a motor, and the belt pulley (5) is connected with the bevel gear set (7) through a rod to change the transmission direction; the metal circular ring supporting part (6) is of a rod-shaped structure, the insulating supporting frame (8) is fixed to the top of the metal circular ring supporting part (6), the bevel gear set (7) is installed at the bottom of the metal circular ring supporting part (6), and the metal circular ring (9) is fixed to the insulating supporting frame (8); the belt pulley (5) transmits the rotary motion to the metal ring supporting part (6) so as to drive the metal ring (9) to rotate, and an external electric field for driving the rotary motion is ensured not to generate external electric field interference on the electrostatic spinning process; the electric brush (10) is contacted with the outer edge of the metal ring (9).
- 2. device for the production of very large area suspended nanofibrous web, according to claim 1, characterised in that the height of the metal ring support (6) is at least 50 cm.
- 3. device for preparing ultra large area suspended nano-fiber net, according to claim 1 or 2, characterized in that the metal ring support (6) and the insulating support frame (8) are made of insulating material, and the bevel gear set (7) is made of alloy material.
- 4. The method for preparing the ultra-large area suspended nano-fiber web by adopting the device of claims 1-3 is characterized by comprising the following steps:, starting the high voltage generator to provide positive and negative voltage to the needle tube spinning nozzle (2) and the electric brush (10), and stabilizing the voltage at 10-20KV when applying voltage and ensuring the air humidity below 39%;the second step is that: starting the spinning collecting device, and driving the metal circular ring (9) to rotate by a motor;the third step: the linear motor drives the guide rail (4) to move, and the needle tube type spinning nozzle (2) is adjusted to be positioned above the metal circular ring (9);the fourth step: opening the liquid supply device and providing spinning spray liquid for the needle tube type spinning nozzle (2); the needle tube type spinning nozzle (2) is moved to the position right above the edge of the metal circular ring (9) through the plane guide rail (4) to start spinning; wherein the distance between the needle tube type spinning nozzle (2) and the metal ring (9) is 20-30 cm, the spinning speed is 1.2-2.5 ml/h, the air humidity is kept below 39%, and the temperature is room temperature;fifthly, the position of the needle tube type spinning nozzle (2) is adjusted through the guide rail (4), so that the needle tube type spinning nozzle (2) is gradually close to the center of the circle from the edge of the metal ring (9), spinning firstly falls on the edge of the metal ring (9) under the action of electrostatic force, then the spinning gradually moves from the edge to the suspended center, and a spinning layer layer close to the center of the circle is lapped on the spinning at the edge of the metal ring (9), so that the spinning of the whole suspended metal ring with an ultra-large area is realized, and the suspended nano-fiber net with the ultra-large area is obtained.
- 5. The method for preparing the ultra-large area suspended nano-fiber web as claimed in claim 4, wherein the spinning solution is PVA polyvinyl alcohol 1788, PVP polyvinyl pyrrolidone and PAN polyacrylonitrile solution, and the concentration is 12-18 wt%.
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| CN201911042559.XA CN110735191B (en) | 2019-10-30 | 2019-10-30 | Device and method for preparing suspended nano-fiber net with ultra-large area |
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| CN201911042559.XA CN110735191B (en) | 2019-10-30 | 2019-10-30 | Device and method for preparing suspended nano-fiber net with ultra-large area |
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| CN110735191B CN110735191B (en) | 2020-11-03 |
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Cited By (5)
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| CN111501112A (en) * | 2020-04-29 | 2020-08-07 | 陕西工业职业技术学院 | Device and method for preparing logic channel microfluidic chip |
| CN112030370A (en) * | 2020-09-07 | 2020-12-04 | 大连理工大学 | Device and method for simultaneously preparing multiple high-uniformity nanofiber membranes |
| CN113026123A (en) * | 2021-01-28 | 2021-06-25 | 哈尔滨工业大学（深圳） | Rotating device and electrostatic spinning device |
| CN113930898A (en) * | 2021-10-29 | 2022-01-14 | 河南省西峡开元冶金材料有限公司 | Manufacturing device and manufacturing method of polycrystalline alumina fiber liner |
| CN114277458A (en) * | 2021-12-31 | 2022-04-05 | 武汉纺织大学 | Accumulation-free centrifugal spinning device and use method thereof |
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| CN112030370A (en) * | 2020-09-07 | 2020-12-04 | 大连理工大学 | Device and method for simultaneously preparing multiple high-uniformity nanofiber membranes |
| CN113026123A (en) * | 2021-01-28 | 2021-06-25 | 哈尔滨工业大学（深圳） | Rotating device and electrostatic spinning device |
| CN113026123B (en) * | 2021-01-28 | 2022-04-01 | 哈尔滨工业大学（深圳） | Rotating device and electrostatic spinning device |
| CN113930898A (en) * | 2021-10-29 | 2022-01-14 | 河南省西峡开元冶金材料有限公司 | Manufacturing device and manufacturing method of polycrystalline alumina fiber liner |
| CN113930898B (en) * | 2021-10-29 | 2023-03-10 | 河南省西峡开元冶金材料有限公司 | Manufacturing device and manufacturing method of polycrystalline alumina fiber liner |
| CN114277458A (en) * | 2021-12-31 | 2022-04-05 | 武汉纺织大学 | Accumulation-free centrifugal spinning device and use method thereof |
| CN114277458B (en) * | 2021-12-31 | 2022-12-09 | 武汉纺织大学 | Accumulation-free centrifugal spinning device and using method thereof |
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