CN110747524B - Coagulating bath device for para-aramid dry-jet wet spinning and spinning method thereof - Google Patents
Coagulating bath device for para-aramid dry-jet wet spinning and spinning method thereof Download PDFInfo
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- CN110747524B CN110747524B CN201911173945.2A CN201911173945A CN110747524B CN 110747524 B CN110747524 B CN 110747524B CN 201911173945 A CN201911173945 A CN 201911173945A CN 110747524 B CN110747524 B CN 110747524B
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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
- D01D5/06—Wet spinning methods
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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
- D01D5/12—Stretch-spinning methods
- D01D5/14—Stretch-spinning methods with flowing liquid or gaseous stretching media, e.g. solution-blowing
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Abstract
The invention provides a coagulation bath device for para-aramid dry-jet wet spinning and a spinning method thereof, and relates to the technical field of spinning equipment and processes. In the invention, a spinning pipe (107) for spinning is arranged in a coagulation bath tray (1), an accelerating device (2) is sleeved on the spinning pipe (107), and a triangular gasket (7) is arranged between the accelerating device (2) and the spinning pipe (107); a screw hole (113) and a guide groove (114) are formed in a plate frame (112) of the coagulation bath tray (1), and the screw rod (3) is in threaded fit connection with the screw hole (113); the accelerating device (2) is tightly installed at the guide groove (114) through a bolt (4), a gasket (6) and a nut (5). Compared with the prior art, the height of the coagulating bath is convenient to change to adjust the height of the air layer; the accelerating device is arranged to conveniently adjust the flow rate of the coagulation bath and adjust the position of the coagulation bath, and the speed difference between the flow rate of the coagulation bath and the spinning speed is balanced; the device has simple structure and convenient position adjustment, and can adapt to the spinning method with the spinning speed of 200-600 m/min.
Description
Technical Field
The invention relates to the technical field of spinning equipment and processes, in particular to a coagulation bath device for para-aramid dry-jet wet spinning and a spinning method thereof, which are convenient for realizing high-speed spinning of para-aramid.
Background
The para-aramid fiber is a novel high-tech synthetic fiber, has the excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight, insulation, aging resistance, long life cycle and the like, and is widely applied to the fields of composite materials, bulletproof products, building materials, special protective clothing, electronic equipment and the like.
The para-aramid resin is usually spun by a dry-jet wet spinning method. After being sprayed out by a spinning device, the spinning slurry directly enters an air layer to be stretched to form nascent fibers with certain strength, and the strength of the nascent fibers is related to the height of the air layer; the nascent fiber with certain strength can enter a coagulating bath at a higher speed for further spinning, the coagulating bath mainly has the function of fixing the orientation of the liquid crystal structure of the para-aramid fiber to obtain the fiber with excellent performance, and the orientation fixing degree of the internal structure of the fiber is related to the speed difference between the flow rate of the coagulating bath and the spinning speed; when the spinning speed changes, the speed difference between the two can be ensured only by synchronously changing the flow rate of the coagulating bath. Therefore, in the spinning of para-aramid, parameters such as the height of the air layer, the speed difference between the coagulation bath flow rate and the spinning speed, and the like need to be adjusted according to different performance requirements of the fiber. And the improvement of the spinning speed can improve the production efficiency, which is one of the power of continuous improvement of the spinning process.
Most of the coagulation bath apparatuses of the prior art are of a stationary type, such as the one described in patent application publication No. CN 1234839a entitled "method for producing high strength aramid fibers", which refers to a coagulation bath; and the adjustment of parameters such as the height of an air layer, the flow rate of a coagulating bath and the like is difficult, so that the research of a high-speed spinning process is limited.
Disclosure of Invention
The invention provides a coagulation bath device for para-aramid dry-jet wet spinning and a spinning method thereof, wherein the height of the coagulation bath in the device is convenient to change and is used for adjusting the height of an air layer; the accelerating device and the position thereof are adjustable, so that the flow velocity of the coagulation bath is conveniently adjusted, and the speed difference between the flow velocity of the coagulation bath and the spinning speed is further balanced; and provides a method for high-speed spinning.
The concrete technical scheme is that a dry-jet wet-spinning coagulating bath device comprises: the device comprises a coagulation bath tray and an accelerating device, wherein the accelerating device can be fixed below the coagulation bath tray and synchronously moves up and down with the coagulation bath tray; moreover, after the position of the coagulation bath tray is determined, the accelerating device can independently adjust the up-down position.
A spinning pipe for spinning is arranged in the coagulation bath tray, the accelerating device is sleeved on the spinning pipe, and the triangular gasket is arranged between the accelerating device and the spinning pipe; the triangular gasket is used for sealing the accelerating device and the spinning pipe, the added liquid enters from the second liquid inlet pipe positioned below, generally high-pressure fluid is used for generating upward acting force, and the triangular gasket is pushed upwards to realize the sealing between the accelerating device and the spinning pipe.
The plate frame of the coagulation bath tray is provided with a silk hole and a guide groove, the screw rod is in threaded fit connection with the silk hole, the coagulation bath tray and the accelerating device can synchronously move up and down by rotating the screw rod, the height of an air layer between the coagulation bath and a spinneret plate is changed, the strength of nascent fibers is reduced when the height of the air layer is too small, and broken filaments are easily generated in subsequent spinning; too high air layer can improve the strength of the nascent fiber, increase the difficulty of subsequent spinning and possibly cause too coarse fiber.
The accelerating device is fixedly arranged at the guide groove through a bolt, a gasket and a nut; the acceleration device independently adjusts the vertical position of the plate frame of the coagulation bath tray within the range limited by the guide groove; the relative position between the accelerating device and the coagulation bath tray is changed, namely the accelerating starting point in the fiber spinning is changed, and the spinning is carried out according to different performance requirements.
The coagulation bath tray and the accelerating device are respectively provided with a first liquid inlet pipe and a second liquid inlet pipe. The coagulating bath liquid can enter the spinning equipment from the first liquid inlet pipe and the second liquid inlet pipe respectively to participate in spinning.
Furthermore, a first cavity is arranged in the coagulation bath tray, the first cavity is a cylindrical cavity, a circle of support plate protruding inwards is arranged at the lower part of the first cavity, and a damping tray sleeved on the spinning pipe through a central through hole is positioned above the support plate; a plurality of small through holes are formed in the periphery of the central through hole of the damping disc. The diameter of the damping disc is not larger than the inner diameter of the first cavity, when water is supplemented at the first liquid inlet pipe, the water supplementing pressure is larger than the gravity of the damping disc, and the damping disc will float upwards to balance the pressure of water; water flows upwards from the small through holes on the damping disc and uniformly disperses and flows, so that the coagulation bath in the first cavity is in a stable flowing state and no vortex occurs; when the water replenishing pressure is smaller than the gravity of the damping disc, the damping disc falls on the support plate, and the support plate is an annular clamping table located inside the first cavity.
Further, an overflow disc with a spinning pipe is arranged in the first cavity; the upper part of the overflow disc is provided with a vertical wall with a plurality of liquid inlet holes, a concave ring and a convex ring, the concave ring and the convex ring are nonporous, the bottom surface of the concave ring is flat, and the vertical wall is in transition connection with the spinning pipe through the concave ring and the convex ring. The inner part and the outer part of the overflow disc are in fillet transition connection, so that the purpose of promoting the stable flow of the solidified liquid is achieved, and the generation of vortexes is avoided; in the coagulation bath, water generally flows into the concave ring from a liquid inlet hole on the vertical wall, then flows into the spinning pipe from the concave ring through the convex ring, and the nascent fiber is oriented in the spinning pipe along with the direction of the water flow, and the water flow can also take away the solvent in the spinning slurry on the nascent fiber.
Furthermore, a second cavity is arranged in the accelerating device, the second cavity is a cylindrical cavity, a flared opening similar to the triangular washer in shape is arranged above the second cavity, an accelerating pipeline is arranged at the bottom of the second cavity, the diameter of the accelerating pipeline is larger than that of the spinning pipe, and a middle flow passage for the accelerating liquid to be merged into is formed between the accelerating pipeline and the spinning pipe; when the flow velocity of the coagulation bath cannot meet the spinning requirement, the accelerating device is started, water is supplemented at the second liquid inlet pipe, water flow can be changed into vertical downward flow from transverse flow at the accelerating pipeline, then the water flow is parallel to the coagulation bath in the spinning pipe, the flow velocity after parallel flow is larger than the original flow velocity of the coagulation bath in the spinning pipe by controlling the water supplementing pressure at the accelerating device, and the orientation fixing degree of the fibers is further enhanced. The side plate of the accelerating device is provided with a mounting hole.
Further, a cover plate with a wire passing hole in the middle is covered above the coagulation bath tray. The silk sprayed by the spinneret plate enters the coagulation bath device through the silk passing hole, and the cover plate reduces impurities entering the coagulation bath tray, so that the interference of the impurities on spinning is avoided.
A dry-jet wet spinning method is provided, in which the balance of the height of air layer, the speed difference between the coagulation bath flow rate and the spinning speed is achieved by means of the coagulation bath device of the present invention; the method comprises the following steps:
s1, placing the coagulating bath device below the spinning position, placing the through-hole below the spinneret plate, wherein the spinning speed is 200-600m/min,
s2, adjusting the position of the coagulation bath tray through a screw rod, and keeping the height of the air layer to be 8-15 mm;
s3, determining the installation position of the accelerating device, the coagulating bath tray and the liquid inlet speed of the accelerating device, and keeping the speed difference between the coagulating bath flow speed and the spinning speed stable;
s4, the spinning slurry with the inherent viscosity of 5-8 is sprayed out from the spinning position and enters the coagulating bath for spinning through an air layer.
The dry-jet wet-spinning coagulating bath device has the advantages that:
the accelerating device is arranged, so that the flow velocity of the coagulating bath is conveniently adjusted to balance the speed difference between the flow velocity of the coagulating bath and the spinning speed, and the requirement of spinning at higher speed can be met; when the accelerated water flow is merged into the spinning pipe, the flow direction of the accelerated water flow is vertical downward and is the same as the flow direction of a coagulating bath in the spinning pipe, so that transverse acting force cannot be generated on fiber tows, and the orientation of the fibers is facilitated;
the position of the coagulating bath is adjustable, so that the height of an air layer is adjusted, the nascent fiber is guaranteed to have certain strength and can adapt to higher spinning speed, experiments show that the height of the air layer is 12mm, the spinning speed is 400m/min, no yarn breakage occurs in the spinning process, and the mechanical property of the fiber is excellent;
the accelerating device can move in the range of the guide groove, the relative position between the accelerating device and the coagulation bath tray is changed, namely the accelerating starting point in fiber spinning is changed, and spinning is carried out according to different performance requirements;
the device can be suitable for the high-speed spinning of the para-aramid and can adapt to the spinning speed of 200 plus one meter per minute (600 m/min); under the condition of setting the spinning speed, the spinning process parameters need to be designed, and the device has the advantages of simple structure, convenient position adjustment, and convenience for adjusting the height of an air layer and the distance between an accelerating device and a coagulation bath tray.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic view of a dry-jet wet-spinning coagulation bath apparatus;
FIG. 2 is a front view of a dry jet wet spinning coagulation bath apparatus;
FIG. 3 is a left side view of a dry jet wet spinning coagulation bath apparatus;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 6 is an exploded view of a dry jet wet spinning coagulation bath apparatus.
Description of reference numerals:
1. the device comprises a coagulation bath tray, 2, an accelerating device, 3, a screw rod, 4, a bolt, 5, a nut, 6, a gasket, 7, a triangular washer, 8, a cover plate, 9 and a wire passing hole;
101. the device comprises a first cavity, 102, an overflow disc, 103, a vertical wall, 104, a liquid inlet hole, 105, a concave ring, 106, a convex ring, 107, a spinning pipe, 108, a support plate, 109, a damping disc, 110, a central through hole, 111, a first liquid inlet pipe, 112, a plate frame, 113, a wire hole, 114, a guide groove, 115 and a small through hole;
201. a second cavity 202, a flaring 203, a second liquid inlet pipe 204, an accelerating pipeline 205, an intermediate flow passage 206 and a mounting hole.
Detailed Description
The following description of the embodiments of the present invention refers to the accompanying drawings and examples:
it should be noted that the structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are only for the purpose of understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined by the following claims, and all modifications, proportions, changes, and variations of the structures, and dimensions which are within the scope of the present disclosure are not to be considered as limiting the present disclosure.
In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Fig. 1, a dry-jet wet-spinning coagulation bath apparatus comprising: the device comprises a coagulation bath tray 1 and an accelerating device 2, wherein the accelerating device 2 can be fixed below the coagulation bath tray 1 and can move up and down synchronously with the coagulation bath tray 1; furthermore, when the coagulation bath tray 1 is positioned, the acceleration unit 2 can adjust the up-down position independently. A cover plate 8 with a silk passing hole 9 in the middle is covered on the upper part of the coagulation bath tray 1.
In FIG. 2, the coagulation bath 1 and the accelerator 2 are respectively provided with a first liquid inlet pipe 111 and a second liquid inlet pipe 203.
Fig. 5, a first cavity 101 is arranged in the coagulation bath tray 1, a ring of support plates 108 protruding inwards is arranged at the lower part of the first cavity 101, and a damping disc 109 sleeved on a spinning pipe 107 through a central through hole 110 is positioned above the support plates 108; a plurality of small through holes 115 are arranged on the periphery of the central through hole 110 of the damping disk 109. The diameter of the damping disc 109 is no greater than the inner diameter of the first cavity 101. An overflow pan 102 with a spinning tube 107 is provided in the first chamber 101; the upper part of the overflow disc 102 is provided with a vertical wall 103 with a plurality of liquid inlet holes 104, a concave ring 105 and a convex ring 106, and the vertical wall 103 is transitionally connected with a spinning pipe 107 by the concave ring 105 and the convex ring 106. The overflow pan 102 is connected with round angle transition at the inner part and the outer part.
In fig. 6, a spinning tube 107 for spinning is provided in the coagulation bath tray 1, the acceleration device 2 is fitted to the spinning tube 107, and the triangular washer 7 is installed between the acceleration device 2 and the spinning tube 107.
In FIG. 3, the plate frame 112 of the coagulation bath tray 1 is provided with a screw hole 113 and a guide groove 114, and the screw rod 3 is in threaded fit connection with the screw hole 113. The accelerating device 2 is tightly mounted at the guide groove 114 by the bolt 4, the washer 6 and the nut 5.
4-6, the speed device 2 has a second cavity 201, the second cavity 201 has a flaring 202 with a shape similar to the triangular gasket 7 above, the bottom of the second cavity 201 is provided with an accelerating pipe 204, the diameter of the accelerating pipe 204 is larger than that of the spinning pipe 107, and an intermediate flow channel 205 for the accelerated liquid to merge is formed between the accelerating pipe 204 and the spinning pipe 107; the side plate of the accelerator apparatus 2 is provided with a mounting hole 206.
Example 1:
the para-aramid fiber dry-jet wet spinning method has the advantages that the inherent viscosity of the para-aramid fiber is 6.8, the para-aramid fiber is dissolved in concentrated sulfuric acid to prepare spinning slurry with the concentration of 20% by mass ratio, the spinning speed is required to be about 400m/min, the final tensile strength of the fiber is not lower than 2.6GPa, and the tensile modulus is not lower than 75 GPa.
Other parameters in the spinning process need to be adjusted and matched to meet the spinning requirement.
Determination of process parameters: the aperture of the spinneret plate is 0.08mm, the length of the spinning tube is 8mm, the spinning speed is 80m/min, the spinning temperature is 80 ℃, the temperature of the coagulation bath is 10 ℃, the coagulation bath is water, the liquid inlet amount of the coagulation bath at the first liquid inlet pipe 111 of the coagulation bath tray 1 is 320L/h, and the liquid inlet amount of the coagulation bath at the second liquid inlet pipe 203 of the accelerating device 2 is 400L/h.
The coagulating bath device of the invention is convenient for adjusting the height of the air layer and increasing the flow rate of the coagulating bath in the spinning pipe, the coagulating bath device of the invention is applied to spinning,
the first set of design parameters: the height of the air layer is 8mm, and the distance between the accelerating device 2 and the coagulation bath tray 1 is 13 mm; the resulting fiber had a tensile strength of 2.7GPa and a tensile modulus of 79 GPa.
The second set of design parameters: the height of the air layer is 12mm, and the distance between the accelerating device 2 and the coagulation bath tray 1 is 10 mm; the resulting fiber had a tensile strength of 3.0GPa and a tensile modulus of 86 GPa.
The third set of design parameters: the height of the air layer is 15mm, and the distance between the accelerating device 2 and the coagulation bath tray 1 is 8 mm; the resulting fiber had a tensile strength of 2.8GPa and a tensile modulus of 83 GPa.
Example 2:
the para-aramid fiber dry-jet wet spinning method is characterized in that the inherent viscosity of para-aramid fiber is 7, the para-aramid fiber is dissolved in concentrated sulfuric acid to prepare spinning slurry with the concentration of 20% by mass ratio, the spinning speed is required to be about 600m/min, the tensile strength of the fiber is not lower than 2.8GPa, and the tensile modulus is not lower than 80 GPa.
Other parameters in the spinning process need to be adjusted and matched to meet the spinning requirement.
Determination of process parameters: the aperture of the spinneret plate is 0.08mm, the length of the spinning tube is 8mm, the spinning speed is 100m/min, the spinning temperature is 85 ℃, the temperature of the coagulation bath is 8 ℃, the coagulation bath is water, the liquid inlet amount of the coagulation bath at the first liquid inlet pipe 111 of the coagulation bath tray 1 is 350L/h, and the liquid inlet amount of the coagulation bath at the second liquid inlet pipe 203 of the accelerating device 2 is 500L/h.
The coagulating bath device of the invention is convenient for adjusting the height of the air layer and increasing the flow rate of the coagulating bath in the spinning pipe, the coagulating bath device of the invention is applied to spinning,
the first set of design parameters: the height of the air layer is 8mm, and the distance between the accelerating device 2 and the coagulation bath tray 1 is 12 mm; the resulting fiber had a tensile strength of 2.8GPa and a tensile modulus of 81 GPa.
The second set of design parameters: the height of the air layer is 12mm, and the distance between the accelerating device 2 and the coagulation bath tray 1 is 10 mm; the resulting fiber had a tensile strength of 3.1GPa and a tensile modulus of 86 GPa.
The third set of design parameters: the height of the air layer is 15mm, and the distance between the accelerating device 2 and the coagulation bath tray 1 is 8 mm; the resulting fiber had a tensile strength of 2.9GPa and a tensile modulus of 82 GPa.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (3)
1. A dry-jet wet-spinning coagulating bath device, which is characterized in that,
the method comprises the following steps: the coagulating bath tray (1) and the accelerating device (2) are both internally provided with cylindrical inner cavities;
a spinning pipe (107) for spinning is arranged in the coagulation bath tray (1), the accelerating device (2) is sleeved on the spinning pipe (107), and the triangular gasket (7) is arranged between the accelerating device (2) and the spinning pipe (107);
a screw hole (113) and a guide groove (114) are formed in a plate frame (112) of the coagulation bath tray (1), and the screw rod (3) is in threaded fit connection with the screw hole (113); the accelerating device (2) is fixedly arranged at the guide groove (114) through a bolt (4), a gasket (6) and a nut (5);
a first liquid inlet pipe (111) and a second liquid inlet pipe (203) are respectively arranged on the coagulation bath tray (1) and the accelerating device (2);
a first cavity (101) is arranged in the coagulation bath tray (1), a circle of support plate (108) protruding inwards is arranged at the lower part of the first cavity (101), and a damping tray (109) sleeved on the spinning pipe (107) through a central through hole (110) is positioned above the support plate (108);
a plurality of small through holes (115) are formed in the periphery of a central through hole (110) of the damping disc (109);
an overflow pan (102) with a spinning tube (107) is arranged in the first chamber (101);
a vertical wall (103) with a plurality of liquid inlet holes (104), a concave ring (105) and a convex ring (106) are arranged above the overflow disc (102), and the vertical wall (103) is in transition connection with the spinning pipe (107) through the concave ring (105) and the convex ring (106);
a cover plate (8) with a silk passing hole (9) in the middle is covered on the upper part of the coagulation bath tray (1).
2. The coagulation bath device for dry-jet wet spinning according to claim 1,
the accelerating device (2) is internally provided with a second cavity (201), a flared opening (202) with the shape similar to that of the triangular gasket (7) is arranged above the second cavity (201), the bottom of the second cavity (201) is provided with an accelerating pipeline (204),
the diameter of the accelerating pipe (204) is larger than that of the spinning pipe (107), an intermediate flow passage (205) for merging the accelerating liquid is formed between the accelerating pipe (204) and the spinning pipe (107),
the side plate of the accelerating device (2) is provided with a mounting hole (206).
3. A dry-jet wet-spinning method using the coagulation bath device for dry-jet wet-spinning of claim 2, comprising the steps of:
the method comprises the following steps:
s1, the coagulating bath device is arranged below the spinning position, the filament passing hole (9) is arranged right below the spinneret plate, the spinning speed is 200-600m/min,
s2, adjusting the position of the coagulation bath tray (1) through a screw rod (3) and keeping the height of the air layer to be 8-15 mm;
s3, determining the installation position of the accelerating device (2), the liquid inlet speeds of the coagulation bath tray (1) and the accelerating device (2), and keeping the speed difference between the coagulation bath flow speed and the spinning speed stable;
s4, the spinning slurry with the inherent viscosity of 5-8 is sprayed out from the spinning position and enters the coagulating bath for spinning through an air layer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911173945.2A CN110747524B (en) | 2019-11-26 | 2019-11-26 | Coagulating bath device for para-aramid dry-jet wet spinning and spinning method thereof |
| PCT/CN2019/125019 WO2021103167A1 (en) | 2019-11-26 | 2019-12-13 | Coagulation bath apparatus for dry-jet wet-spinning of para-aramid and spinning method therefor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911173945.2A CN110747524B (en) | 2019-11-26 | 2019-11-26 | Coagulating bath device for para-aramid dry-jet wet spinning and spinning method thereof |
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| CN110747524B true CN110747524B (en) | 2022-04-15 |
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| CN1234839A (en) * | 1996-10-25 | 1999-11-10 | 纳幕尔杜邦公司 | Process for making high tenacity aramid fibers |
| CN202157150U (en) * | 2011-06-01 | 2012-03-07 | 邵阳纺织机械有限责任公司 | Spinning speed-up device |
| CN205474137U (en) * | 2016-04-08 | 2016-08-17 | 山东万圣博科技股份有限公司 | A coagulating bath accelerating device for counterpointing high -speed spinning of aramid fiber |
| KR20190043666A (en) * | 2017-10-19 | 2019-04-29 | 효성첨단소재 주식회사 | Method of manufacturing aromatic polyamide multi filament |
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| CN101215721A (en) * | 2007-12-29 | 2008-07-09 | 中蓝晨光化工研究院有限公司 | Solidification device used for high spinning-speed dry-wet method spinning |
| US20110045297A1 (en) * | 2008-03-31 | 2011-02-24 | Kolon Industries Inc, | Para-aramid fiber and method of preparing the same |
| CN203174232U (en) * | 2013-04-08 | 2013-09-04 | 邯郸宏大化纤机械有限公司 | Dry-jet wet spinning accelerated coagulating bath |
| CN204111945U (en) * | 2014-03-19 | 2015-01-21 | 福建省长乐市山力化纤有限公司 | A kind of coagulating bath device |
| CN105671659B (en) * | 2016-04-08 | 2018-04-06 | 中芳特纤股份有限公司 | A kind of coagulating bath accelerator for para-aramid fiber high speed spinning |
| KR101915462B1 (en) * | 2017-05-30 | 2018-11-06 | 코오롱인더스트리 주식회사 | Method of manufacturing copolymerized aramid yarn with excellent extracting speed of solvent |
| CN109537074A (en) * | 2018-12-28 | 2019-03-29 | 中国纺织科学研究院有限公司 | Coagulation forming device for cellulose spinning |
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2019
- 2019-11-26 CN CN201911173945.2A patent/CN110747524B/en active Active
- 2019-12-13 WO PCT/CN2019/125019 patent/WO2021103167A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1234839A (en) * | 1996-10-25 | 1999-11-10 | 纳幕尔杜邦公司 | Process for making high tenacity aramid fibers |
| CN202157150U (en) * | 2011-06-01 | 2012-03-07 | 邵阳纺织机械有限责任公司 | Spinning speed-up device |
| CN205474137U (en) * | 2016-04-08 | 2016-08-17 | 山东万圣博科技股份有限公司 | A coagulating bath accelerating device for counterpointing high -speed spinning of aramid fiber |
| KR20190043666A (en) * | 2017-10-19 | 2019-04-29 | 효성첨단소재 주식회사 | Method of manufacturing aromatic polyamide multi filament |
| CN208995636U (en) * | 2018-10-31 | 2019-06-18 | 山东精恒科技有限公司 | A kind of frame jacking system |
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| Publication number | Publication date |
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| CN110747524A (en) | 2020-02-04 |
| WO2021103167A1 (en) | 2021-06-03 |
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