CN116288762A - Uniform and continuous micro-nanofiber supercritical spinning device - Google Patents
Uniform and continuous micro-nanofiber supercritical spinning device Download PDFInfo
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- CN116288762A CN116288762A CN202310211663.7A CN202310211663A CN116288762A CN 116288762 A CN116288762 A CN 116288762A CN 202310211663 A CN202310211663 A CN 202310211663A CN 116288762 A CN116288762 A CN 116288762A
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- 238000009987 spinning Methods 0.000 title claims abstract description 68
- 239000002121 nanofiber Substances 0.000 title claims abstract description 32
- 239000002904 solvent Substances 0.000 claims description 46
- 230000001105 regulatory effect Effects 0.000 claims description 34
- 239000012530 fluid Substances 0.000 claims description 26
- 230000007246 mechanism Effects 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000005057 refrigeration Methods 0.000 claims description 14
- 238000011084 recovery Methods 0.000 claims description 12
- 239000004745 nonwoven fabric Substances 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 3
- 230000004888 barrier function Effects 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 239000000835 fiber Substances 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005191 phase separation Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010041 electrostatic spinning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
-
- 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
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
- D01D5/247—Discontinuous hollow structure or microporous structure
-
- 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
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
-
- 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
- D01D13/00—Complete machines for producing artificial threads
- D01D13/02—Elements of machines in combination
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention relates to a uniform and continuous micro-nano fiber supercritical spinning device which is used for preparing uniform and continuous micro-nano fibers. Compared with the prior art, the uniform and continuous micro-nano fiber supercritical spinning device can realize continuous preparation of the non-woven fabric with high strength, good barrier property and excellent air permeability.
Description
Technical Field
The invention relates to the technical field of spinning, in particular to a uniform and continuous micro-nano fiber supercritical spinning device.
Background
The nanometer-micrometer fiber is a novel textile material with high technical content, high added value and high quality, and the textile manufactured by the nanometer-micrometer fiber has the characteristics of light and thin texture, soft and comfortable hand feeling, good drapability, large specific surface area, strong adsorptivity, good warmth retention, excellent waterproof and breathable properties and the like, and has wide application prospect in the fields of medical treatment and health, environmental engineering, biotechnology, military national defense and the like. At present, the preparation method of the nano-micron fiber mainly comprises an electrostatic spinning method, a template method, a phase separation method, a melt blowing method, a flash evaporation method and the like, but the electrostatic spinning method, the template method, the phase separation method and the melt blowing method have the defect of low production efficiency or low product strength, and cannot meet the large-scale application requirements.
The flash spinning nanometer and micrometer fiber technology is a novel spinning technology, the fiber diameter prepared by the method is 0.1-5 mu m, and the formed nanometer and micrometer fiber can be made into non-woven fabric after lapping and fixing. Flash spinning refers to that a polymer forms fibers rapidly when a solvent is flashed, which is also called instant spinning, but the method for preparing non-woven fabrics by using a flash evaporation method still has great problems in China, firstly, parameters such as a fiber-forming polymer, a solvent, an additive and the like are regulated and controlled, and secondly, the flash evaporation device has the problems of accurate regulation and control of the temperature and the pressure of a high-pressure chamber and a low-pressure chamber, recovery and reuse of the solvent and the like. Development of the flash evaporation device is a precondition for preparing the nonwoven fabric with excellent performance, and researchers have made a series of researches on development of the flash evaporation device. CN110129907 discloses a flash spinning device for polyphenylene sulfide, which comprises a box body, a spinning nozzle, a high-pressure reaction kettle and a conveying device, wherein a spinning solution inlet is formed in the box body, the spinning nozzle is arranged in the box body, the bottom end of the high-pressure reaction kettle is connected with the spinning nozzle through the spinning solution inlet, the conveying device is arranged at the bottom of the box body, and the flash spinning device further comprises a regulating valve and an interceptor, wherein the regulating valve and the interceptor are sequentially arranged above the spinning nozzle, and the device is used for successfully preparing the polyphenylene sulfide non-woven fabric, but the device cannot accurately control the pressure, does not recycle a solvent, so that resources are wasted, the solvent enters the atmosphere to pollute the air, and the health of people is affected.
Therefore, there is a need to develop a supercritical spinning apparatus which can precisely control temperature and pressure, separate recovery of solvents, and produce uniform and continuous micro-nanofibers.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a uniform and continuous micro-nanofiber supercritical spinning device so as to realize continuous preparation of the non-woven fabric with high strength, good barrier property and excellent air permeability.
The aim of the invention can be achieved by the following technical scheme:
the invention aims to provide a uniform and continuous micro-nanofiber supercritical spinning device which is used for preparing uniform and continuous micro-nanofiber.
Further, the micro-nano fiber supercritical spinning device also comprises a spinning plate connected with the low-pressure chamber.
Further, the spinning plate is provided with spinning holes, the spinning holes are in the shape of cylindrical cones, and the number of the spinning holes is 5-20.
Further, a sensor a, a fluid inlet a and a safety valve a are arranged at the top end of the high-pressure chamber, a fluid outlet a is arranged at the bottom end of the high-pressure chamber, and a heating and heat-preserving mechanism a is arranged outside the high-pressure chamber; the sensor a is used for monitoring the temperature and the pressure in the high-pressure chamber, the safety valve a is used for protecting the high-pressure chamber, and when the pressure exceeds the pressure set by the safety valve a, the sensor a can be automatically opened to achieve the aim of reducing the pressure, so that the pressure is prevented from being too high to cause cracking or even explosion.
Further, the maximum pressure born by the high-pressure chamber is 30MPa, the maximum temperature born by the high-pressure chamber is 500 ℃, and the high-pressure chamber is provided with an explosion-proof component.
Further, the highest heating temperature of the heating and heat preserving mechanism a is 300 ℃, the general use temperature is below 260 ℃, heating is stopped after the heating to the specified temperature, and the temperature in the high-pressure chamber can be ensured not to change within 10-40 min; the fluid inlet a is connected with a high-temperature and high-pressure resistant pipeline, and a flow regulating valve a is arranged on the pipeline; the fluid outlet a is connected with a high-temperature and high-pressure resistant passageway, and a flow regulating valve b is arranged on the pipeline.
Further, the structure and configuration of the low-pressure chamber and the high-pressure chamber are the same, a sensor b, a fluid inlet b and a safety valve b are arranged at the top end of the low-pressure chamber, a fluid outlet b is arranged at the bottom end of the low-pressure chamber, and a heating and heat preserving mechanism b is arranged outside the low-pressure chamber.
Further, the high pressure chamber is connected with the low pressure chamber through a pipeline, the low pressure chamber is connected with the spinning plate through a pipeline, and a flow regulating valve c is arranged on the pipeline.
Further, the flow regulating valve a, the flow regulating valve b and the flow regulating valve c are connected with a control panel, and the flow regulating valve switch and the flow are controlled by operating the control panel; the sensor a and the sensor b are connected with a display screen, and the temperature and the pressure are displayed on the display screen in real time.
Further, the volume of the high-pressure chamber is 50-200 ml, and the volume of the high-pressure chamber is larger than that of the low-pressure chamber, and the volume of the high-pressure chamber is different from that of the low-pressure chamber by 10-40 ml.
Further, the solvent recovery mechanism comprises a condenser a, a condenser b, a suction assembly a, a refrigeration assembly a and a refrigeration assembly b; according to the difference of the boiling points of the solvents, the solvents can be separated and liquefied for recycling.
Further, the solvent outlet is connected with the lower port of the condenser a through a pipeline, the upper port of the condenser a is connected with the lower port of the condenser b through a pipeline, and the upper port of the condenser b is connected with the suction assembly a through a pipeline; the refrigerating component a is connected with the condenser b through a pipeline, and the refrigerating component b is connected with the condenser a through a pipeline; the solvent recovery mechanism with the design can separate and recover different solvents, and is favorable for reusing the solvents.
Further, the number of condensers and the number of refrigerating devices are not limited to two, and when the number of the used solvents is more than two, the number of condensers and the number of refrigerating devices can be increased, and the connection methods are the same.
Further, the suction component a is used for generating negative pressure at the solvent outlet, so that the solvent recovery efficiency is improved; the temperature ranges of the refrigerating component a and the refrigerating component b are 40 ℃ below zero to 50 ℃.
The specific mechanism of the invention is as follows:
firstly, a flow regulating valve at the upper end of a high-pressure chamber is opened to enable the configured supercritical fluid spinning solution to enter the high-pressure chamber, and the temperature and the pressure of the high-pressure chamber are observed through a display screen by utilizing a sensor; the safety valve is arranged to be the same as the designated pressure value of the high-pressure chamber, when the pressure of the high-pressure chamber is larger than the pressure set by the safety valve, the safety valve can automatically release pressure so as to ensure that the pressure of the high-pressure chamber is certain, and the danger of rupture of the high-pressure chamber caused by overlarge pressure can be avoided. When the pressure of the high-pressure chamber is the same as that of the reaction kettle, a flow regulating valve at the upper end of the low-pressure chamber is opened, so that the supercritical fluid spinning solution enters the low-pressure chamber, and slight phase separation is generated in the supercritical fluid spinning solution; the relief valve and the sensor provided in the low-pressure chamber serve the same function as in the high-pressure chamber. After the pressure of the low-pressure chamber reaches the target pressure, opening a flow regulating valve at the lower end of the low-pressure chamber, spraying spinning solution from a spinneret plate, and rapidly cooling and solidifying a polymer to form micro-nano fibers; the pressure at the spinneret plate is stable by controlling the flow regulating valve, and fiber breakage or uneven thickness caused by pressure fluctuation is avoided, so that uniform and continuous micro-nano fibers are spun. Finally, solvent gas enters the condenser from the solvent outlet by using the suction device, different cooling temperatures are provided for the condenser by using the refrigerating device according to different boiling points of the solvent, and the solvent is liquefied in different condensers respectively, so that the classified recovery of the solvent can be realized, and the solvent can be reused.
Compared with the prior art, the invention has the following beneficial effects:
1) According to the uniform and continuous micro-nano fiber supercritical spinning device provided by the invention, through the accurate control of the pressure of the high-pressure chamber, the low-pressure chamber and the spinning plate by utilizing the flow regulating valve, the unstable liquid supply caused by pressure fluctuation is avoided, and the danger caused by overlarge pressure is avoided by matching with the use of the safety valve, so that the safe and stable spinning liquid supply is realized.
2) According to the uniform and continuous micro-nano fiber supercritical spinning device provided by the invention, different cooling temperatures are respectively provided for the condenser by utilizing the refrigerating component, and the solvent is liquefied by utilizing the difference of the boiling points of the solvents, so that the solvents are recovered, different solvents are separated, the repeated use of the solvents is facilitated, and the resources are saved.
Drawings
FIG. 1 is a schematic diagram of a supercritical spinning apparatus for uniform and continuous micro-nanofibers in the present invention.
FIG. 2 is a top view of a spinneret of the uniform continuous micro-nanofiber supercritical spinning apparatus of the present invention.
FIG. 3 is a schematic drawing of the spinneret orifices of the uniform continuous micro-nanofiber supercritical spinning apparatus of the present invention.
The reference numerals in the figures indicate:
1-control panel, 2-display screen, 3-spinning room, 4-flow regulating valve a, 5-sensor a, 6-fluid inlet a, 7-fluid outlet a, 8-flow regulating valve b, 9-sensor b, 10-fluid inlet b, 11-fluid outlet b, 12-safety valve a, 13-high pressure room, 14-heating and insulating mechanism a, 15-safety valve b, 16-low pressure room, 17-heating and insulating mechanism b, 18-flow regulating valve c, 19-spinning plate, 20-solvent outlet, 21-condenser a, 22-condenser b, 23-suction assembly a, 24-refrigeration assembly a, 25-refrigeration assembly b, 191-spinneret orifice.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. Features such as a part model, a material name, a connection structure, a control method and the like which are not explicitly described in the technical scheme are all regarded as common technical features disclosed in the prior art.
Examples
Referring to fig. 1 to 3, the present embodiment provides a uniform continuous micro-nanofiber supercritical spinning apparatus, comprising:
the spinning chamber 3, the high-pressure chamber 13 and the low-pressure chamber 16 provided in the spinning chamber 3, the solvent outlet 20 provided on the side surface of the spinning chamber 3, the solvent recovery mechanism connected to the solvent outlet 20, and the spinneret 19 connected to the low-pressure chamber 16.
Spinneret holes 191 are distributed on the spinning plate 19, the shapes of the spinneret holes 191 are cylindrical cones, and the number of the spinneret holes 191 is 5-20.
The top end of the high-pressure chamber 13 is provided with a sensor a5, a fluid inlet a6 and a safety valve a12, the bottom end of the high-pressure chamber 13 is provided with a fluid outlet a7, and the outside of the high-pressure chamber 13 is provided with a heating and heat preserving mechanism a14; the sensor a5 is used for monitoring the temperature and the pressure in the high-pressure chamber 13, the safety valve a12 is used for protecting the high-pressure chamber 13, and when the pressure exceeds the pressure set by the safety valve a12, the pressure can be automatically opened to achieve the aim of reducing the pressure, so that the pressure is prevented from being excessively high, and cracking or even bursting is avoided.
The high-pressure chamber 13 is subjected to a maximum pressure of 30MPa and a maximum temperature of 500 ℃, and the high-pressure chamber 13 is provided with an explosion-proof assembly (not shown).
The highest heating temperature of the heating and heat preserving mechanism a14 is 300 ℃, the general use temperature is below 260 ℃, heating is stopped after the heating is carried out to the specified temperature, and the temperature in the high-pressure chamber 13 can be ensured not to change within 10-40 min; the fluid inlet a6 is connected with a high-temperature and high-pressure resistant pipeline, and a flow regulating valve a4 is arranged on the pipeline; the fluid outlet a7 is connected with a high-temperature and high-pressure resistant passageway, and a flow regulating valve b8 is arranged on the pipeline.
The structure and configuration of the low-pressure chamber 16 and the high-pressure chamber 13 are the same, a sensor b9, a fluid inlet b10 and a safety valve b15 are arranged at the top end of the low-pressure chamber 16, a fluid outlet b11 is arranged at the bottom end of the low-pressure chamber 16, and a heating and heat preservation mechanism b17 is arranged outside the low-pressure chamber 16.
The high-pressure chamber 13 is connected to the low-pressure chamber 16 through a pipe, the low-pressure chamber 16 is connected to the spinneret 19 through a pipe, and a flow rate regulating valve c18 is provided on the pipe.
The flow regulating valve a4, the flow regulating valve b8 and the flow regulating valve c18 are connected with the control panel 1, and the flow regulating valve switch and the flow are controlled by operating the control panel 1; the sensor a5 and the sensor b9 are connected with the display screen 2, and the temperature and the pressure are displayed on the display screen 2 in real time.
The sensor a5 and the sensor b9 are temperature and pressure sensors, are common parts or purchasing parts, and can select corresponding specifications, models and parameters according to actual requirements by a person skilled in the art.
The volume of the high pressure chamber 13 is 50-200 ml, and the volume of the high pressure chamber 13 is larger than the volume of the low pressure chamber 16, and the volume of the high pressure chamber 13 is 10-40 ml different from the volume of the low pressure chamber 16.
The solvent recovery mechanism comprises a condenser a21, a condenser b22, a suction assembly a23, a refrigeration assembly a24 and a refrigeration assembly b25; according to the difference of the boiling points of the solvents, the solvents can be separated and liquefied for recycling.
The solvent outlet 20 is connected with the lower port of the condenser a21 through a pipeline, the upper port of the condenser a21 is connected with the lower port of the condenser b22 through a pipeline, and the upper port of the condenser b22 is connected with the suction assembly a23 through a pipeline; the refrigeration component a24 is connected with the condenser b22 through a pipeline, and the refrigeration component b25 is connected with the condenser a21 through a pipeline; the solvent recovery mechanism with the design can separate and recover different solvents, and is favorable for reusing the solvents.
The suction assembly a23 is used for generating negative pressure at the solvent outlet 20 to improve the solvent recovery efficiency; the temperature ranges of the refrigeration component a24 and the refrigeration component b25 are 40 ℃ below zero to 50 ℃.
The specific process for preparing the uniform and continuous micro-nano fiber by using the uniform and continuous micro-nano fiber supercritical spinning device in the embodiment comprises the following steps:
the flow rate regulating valve a4 is opened to allow the prepared supercritical fluid spinning solution to enter the high-pressure chamber 13, when the pressure in the high-pressure chamber 13 is 12MPa, the flow rate regulating valve b8 is opened rapidly, and when the pressure in the low-pressure chamber 16 is 8MPa, the flow rate regulating valve c18 is opened to start spinning. The solvent is changed from liquid to gas rapidly, and the temperature of the condenser a21 is about 20 ℃ and the temperature of the condenser b22 is about 5 ℃ by opening the suction assembly a23, the refrigeration assembly a24 and the refrigeration assembly b25, so that the 1, 2-methylene dichloride and the cyclopentane can be recovered separately and reused. Wherein the volume of the high pressure chamber 13 is 100ml, the volume of the low pressure chamber 16 is 80ml, and the temperatures of the high pressure chamber 13 and the low pressure chamber 16 are 220 ℃; the number of the spinning holes 191 in the spinneret 19 is 15.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.
Claims (10)
1. The uniform and continuous micro-nanofiber supercritical spinning device is used for preparing uniform and continuous micro-nanofibers and is characterized by comprising a spinning chamber (3), a high-pressure chamber (13) and a low-pressure chamber (16) which are arranged in the spinning chamber (3), a solvent outlet (20) arranged on the side surface of the spinning chamber (3) and a solvent recovery mechanism connected with the solvent outlet (20).
2. A uniform, continuous micro-nanofiber supercritical spinning apparatus according to claim 1, characterized in that it further comprises a spinneret (19) connected to the low pressure chamber (16).
3. The uniform and continuous micro-nano fiber supercritical spinning device according to claim 2, wherein the spinning plate (19) is provided with spinning holes (191), the spinning holes (191) are in a cylindrical cone shape, and the number of the spinning holes (191) is 5-20.
4. The uniform and continuous micro-nano fiber supercritical spinning device according to claim 1, wherein a sensor a (5), a fluid inlet a (6) and a safety valve a (12) are arranged at the top end of the high-pressure chamber (13), a fluid outlet a (7) is arranged at the bottom end of the high-pressure chamber (13), and a heating and heat-preserving mechanism a (14) is arranged outside the high-pressure chamber (13);
the fluid inlet a (6) is connected with a high-temperature and high-pressure resistant pipeline, and a flow regulating valve a (4) is arranged on the pipeline;
the fluid outlet a (7) is connected with a high-temperature and high-pressure resistant pipeline, and a flow regulating valve b (8) is arranged on the pipeline.
5. The uniform and continuous micro-nano fiber supercritical spinning device according to claim 4, wherein the structure and configuration of the low pressure chamber (16) and the high pressure chamber (13) are the same, a sensor b (9), a fluid inlet b (10) and a safety valve b (15) are arranged at the top end of the low pressure chamber (16), a fluid outlet b (11) is arranged at the bottom end of the low pressure chamber (16), and a heating and heat preserving mechanism b (17) is arranged outside the low pressure chamber (16).
6. The uniform and continuous micro-nano fiber supercritical spinning device according to claim 5, wherein the high pressure chamber (13) is connected with the low pressure chamber (16) through a pipeline, the low pressure chamber (16) is connected with the spinning plate (19) through a pipeline, and a flow regulating valve c (18) is arranged on the pipeline;
the flow regulating valve a (4), the flow regulating valve b (8) and the flow regulating valve c (18) are connected with the control panel (1);
the sensor a (5) and the sensor b (9) are connected with the display screen (2).
7. A uniform continuous micro-nanofiber supercritical spinning apparatus according to claim 4, wherein said high pressure chamber (13) is equipped with explosion-proof components.
8. The uniform and continuous micro-nano fiber supercritical spinning device according to claim 4, wherein the volume of the high pressure chamber (13) is 50-200 ml, the volume of the high pressure chamber (13) is larger than the volume of the low pressure chamber (16), and the volume of the high pressure chamber (13) is 10-40 ml different from the volume of the low pressure chamber (16).
9. A uniform and continuous micro-nanofiber supercritical spinning apparatus according to claim 1, wherein the solvent recovery mechanism comprises a condenser a (21), a condenser b (22), a suction assembly a (23), a refrigeration assembly a (24) and a refrigeration assembly b (25);
the solvent outlet (20) is connected with the lower port of the condenser a (21) through a pipeline, the upper port of the condenser a (21) is connected with the lower port of the condenser b (22) through a pipeline, and the upper port of the condenser b (22) is connected with the suction component a (23) through a pipeline; the refrigerating component a (24) is connected with the condenser b (22) through a pipeline, and the refrigerating component b (25) is connected with the condenser a (21) through a pipeline.
10. The uniform and continuous micro-nanofiber supercritical spinning device according to claim 9, wherein the temperature range of the refrigerating component a (24) and the refrigerating component b (25) is-40-50 ℃.
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| JPS63278944A (en) * | 1987-05-11 | 1988-11-16 | Mitsubishi Rayon Co Ltd | Porous membrane |
| WO1999023299A1 (en) * | 1997-10-31 | 1999-05-14 | Kimberly-Clark Worldwide, Inc. | Low density resilient webs and methods of making such webs |
| US5985196A (en) * | 1998-01-20 | 1999-11-16 | E. I. Du Pont De Nemours And Company | Flash spinning process and flash spinning solution |
| WO2002016681A1 (en) * | 2000-08-22 | 2002-02-28 | Exxonmobil Chemical Patents Inc. | Polypropylene fibers and fabrics |
| CN101781805A (en) * | 2010-02-03 | 2010-07-21 | 东华大学 | Method for preparing biodegradable copolyester fully-drawn yarns in one step |
| CN106574401A (en) * | 2015-06-18 | 2017-04-19 | 纳幕尔杜邦公司 | Flash spun plexifilamentary strands and sheets |
| CN109487364A (en) * | 2017-09-11 | 2019-03-19 | 东丽纤维研究所（中国）有限公司 | One kind can contaminate polyolefine fiber |
| CN115244139A (en) * | 2020-03-17 | 2022-10-25 | 国立大学法人福井大学 | Dye for dyeing with supercritical carbon dioxide |
| CN114855295A (en) * | 2021-01-20 | 2022-08-05 | 东华大学 | Spinning solution, heat-resistant creep-resistant fiber and preparation method thereof |
| KR20220121014A (en) * | 2021-02-24 | 2022-08-31 | 한국생산기술연구원 | Filament-like fiber manufacturing technology through pressure-controlled supercritical melt spinning method |
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