CN110923924B - Device and method for preparing photo-thermal water evaporation nanofiber knitted assembly - Google Patents
Device and method for preparing photo-thermal water evaporation nanofiber knitted assembly Download PDFInfo
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- CN110923924B CN110923924B CN201911146604.6A CN201911146604A CN110923924B CN 110923924 B CN110923924 B CN 110923924B CN 201911146604 A CN201911146604 A CN 201911146604A CN 110923924 B CN110923924 B CN 110923924B
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/16—Other fabrics or articles characterised primarily by the use of particular thread materials synthetic threads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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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
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Knitting Of Fabric (AREA)
Abstract
The invention relates to a device and a method for preparing a photo-thermal water evaporation nanofiber knitted aggregate, wherein a counter-spraying type nanofiber hollow yarn preparation device comprises a fiber collection yarn disc, a pore-forming guide wire, an electrostatic spinning nozzle, a high-voltage generator, a yarn guide hole disc, a traction roller and a bobbin frame which are driven to rotate, wherein the pore-forming guide wire is arranged along the central axis of the fiber collection yarn disc and penetrates through the yarn guide hole of the yarn guide hole disc, the electrostatic spinning nozzle is symmetrically arranged on two sides of the fiber collection yarn disc, the high-voltage generator is electrically connected with the electrostatic spinning nozzle, the traction roller and the bobbin frame are sequentially arranged on the downstream of the yarn guide hole disc, the nanofiber hollow yarn is knitted through a nanofiber yarn knitting device to obtain a nanofiber-based knitted fabric, and the nanofiber-based knitted fabric is subjected to surface photo-thermal conversion material evaporation through a photo-thermal. The invention can improve the water transport capacity of the photo-thermal water evaporation material, improve the photo-thermal water evaporation efficiency and is beneficial to improving the production efficiency.
Description
Technical Field
The invention belongs to the technical field of nanofiber spinning, and particularly relates to a device and a method for preparing a photo-thermal water evaporation nanofiber knitting assembly.
Background
Water, the most abundant compound on earth, almost covers the earth's surface at 3/4. Water resources are abundant on earth, however 96.5% of water resources are distributed in the ocean and cannot be directly drunk and used for life and production activities. In addition, the only fresh water resources also face the problems of unbalanced water resource distribution, rapid global population increase, rapid increase of industrial urbanization water demand, increasingly serious water pollution and the like.
Seawater desalination becomes the first choice for obtaining fresh water in human society, especially in water-deficient areas. The current mature sea water desalination methods include membrane methods and thermal methods, such as the use of RO reverse osmosis membranes and multi-stage flash technology. However, the two main modes need to consume fossil energy, for example, 4-5kWh of electric energy is consumed for preparing one ton of fresh water by a reverse osmosis membrane method, and the greenhouse effect is inevitably aggravated while seawater is desalinated.
Compared with the above technology, the solar seawater distillation technology has the unique advantages of no consumption of fossil energy, no position condition limitation, no pollution, safety, reliability and the like. The traditional solar distillation technology utilizes solar illumination to integrally heat the introduced seawater, and the seawater is evaporated and condensed to obtain fresh water. Because of the integral heating of the seawater, the utilization efficiency of the solar energy is very low, and is only about 20-40%.
Interfacial water evaporation is a new form of photo-thermal water evaporation that has recently emerged. The conversion efficiency and the photo-thermal water evaporation efficiency of the photo-thermal material can be greatly improved by effectively managing the photo-thermal conversion effect, the moisture transmission and the heat distribution through reasonable material structure design.
The textile material structure has excellent multi-stage assembly characteristics and simultaneously shows excellent service performance. The fiber assembly with the fiber as the unit has unique technical advantages in structural design, moisture transmission and heat distribution management of the photothermal conversion material.
A range of properties occur when the diameter of polymer fibers is reduced from the micrometer scale to the submicrometer scale or nanometer scale. Such as very large volume specific surface area, the volume specific surface area of nanofibers is substantially 1000 times that of microfibers; surface functionalization can be flexibly performed; compared with other known material forms, the material shows excellent effects and mechanical properties, such as surface and interface effects, small-size effects, quantum tunneling effects, rigidity, tensile strength and the like. These characteristics make nanofiber become the first choice material of many important applications, have great potential in fields such as high efficiency filtration, biomedical, intelligent sensing.
The carbon-based small-scale material and the plasmon material have good spectral absorption and thermal conversion characteristics. The material is reasonably distributed and fixed on the surface of the nanofiber aggregate, so that the photo-thermal conversion capability of the material is greatly improved. Meanwhile, the plurality of capillary channels constructed by the nano fibers are beneficial to the effective management of longitudinal water transmission and transverse spreading. The development of the fiber-based multilevel aggregate material has important significance for promoting the performance and the application of the photo-thermal water evaporation material.
Disclosure of Invention
The invention aims to provide a device and a method for preparing a photo-thermal water evaporation nanofiber knitted assembly, which can improve the water transport capacity of a photo-thermal water evaporation material, improve the photo-thermal water evaporation efficiency and be beneficial to improving the production efficiency.
The technical scheme adopted by the invention for solving the technical problems is to provide a device for preparing a photo-thermal water evaporation nanofiber knitted aggregate, which comprises a counter-spraying type nanofiber hollow yarn preparation device, a nanofiber yarn knitting device and a photo-thermal conversion material evaporation device, wherein the counter-spraying type nanofiber hollow yarn preparation device comprises a fiber collection yarn disc driven to rotate, a pore-forming guide wire, an electrostatic spinning nozzle, a high-voltage generator, a yarn guide hole disc, a traction roller and a yarn barrel frame, the pore-forming guide wire is arranged along the central axis of the fiber collection yarn disc and penetrates through the yarn guide hole of the yarn guide hole disc, the electrostatic spinning nozzle is symmetrically arranged at two sides of the fiber collection yarn disc, the high-voltage generator is electrically connected with the electrostatic spinning nozzle, the traction roller and the yarn barrel frame are sequentially arranged at the downstream of the yarn guide hole disc, and the nanofiber hollow yarn prepared by the counter-spraying type nanofiber yarn preparation device is knitted by the nanofiber yarn knitting device to obtain a nanofiber-based needle The nanofiber-based knitted fabric is subjected to surface photothermal conversion material evaporation by a photothermal conversion material evaporation device.
The pore-forming guide wire is an insoluble filament or a soluble high polymer filament.
The insoluble filament is a stainless steel wire with the fineness of 0.5-5 mm or a glass fiber filament with the fineness of 10-500 mu m.
When the pore-forming guide wire adopts the insoluble filament, the surface of the insoluble filament is coated with the soluble material or the lubricating material.
When the pore-forming guide wire is an insoluble filament, the pore-forming guide wire penetrates through rollers of the traction roller, and the traction roller is matched with the pore-forming guide wire to draw the nanofiber hollow yarns on the outer layer.
The fiber-collecting yarn disc is driven to rotate by a first servo motor, and the yarn barrel frame drives the yarn barrel to rotate by a third servo motor.
The electrostatic spinning nozzle is connected with a second servo motor through an insulating transmission shaft and is driven by the second servo motor to adjust the position along the direction vertical to the length direction of the hole-forming guide wire.
The nanofiber yarn knitting device is a flat knitting machine or a circular knitting machine.
The photothermal conversion material evaporation device comprises a vacuum cover, a thermal steaming container and a fabric fixing frame, wherein the thermal steaming container and the fabric fixing frame are both arranged in the vacuum cover, and the fabric fixing frame is positioned above the thermal steaming container.
The technical scheme adopted by the invention for solving the technical problem is to provide a method for preparing a photo-thermal water evaporation nanofiber knitted assembly, and the device for preparing the photo-thermal water evaporation nanofiber knitted assembly comprises the following steps:
(1) adjusting the relative position and the spinning direction of the electrostatic spinning nozzle;
(2) respectively injecting high polymer spinning solution into the electrostatic spinning nozzles at two sides;
(3) starting the fiber-collecting yarn disc to rotate and adjusting the rotating speed;
(4) starting an electrostatic spinning nozzle, opening a high-voltage generator and adjusting spinning voltage until the electrostatic spinning nozzle generates continuous and stable spinning jet flow;
(5) the spinning jet flow is stretched, solidified and deposited on a rotating fiber-collecting yarn disc;
(6) leading the nanofiber bundle deposited on the integrated yarn disc to a pore-forming guide wire to form a nanofiber twisted triangular cone, twisting the nanofiber bundle to form a nanofiber hollow yarn, and leading the nanofiber hollow yarn out through the pore-forming guide wire;
(7) the nano-fiber hollow yarns are drawn by a drawing roller, sequentially pass through a yarn guide hole disc and the drawing roller, and are continuously conveyed to a yarn barrel frame for winding and collection;
(8) knitting the nanofiber hollow yarns by using a nanofiber yarn knitting device to obtain nanofiber-based knitted fabrics;
(9) and carrying out evaporation treatment on the nanofiber-based knitted fabric by using a photothermal conversion material evaporation device to form a photothermal conversion material deposition layer on the surface, so as to obtain a photothermal water evaporation nanofiber knitted fabric assembly.
Advantageous effects
Firstly, the jet-type nanofiber hollow yarn preparation device guides the twisted yarn of the nanofiber bundle through the pore-forming guide wire, so that the nanofiber hollow yarn with a continuous cavity channel inside is obtained. The photo-thermal water evaporation nanofiber knitted fabric assembly is based on the nanofiber hollow yarns, so that a continuous moisture transmission trunk is provided for the photo-thermal water evaporation material, the nanofiber has the characteristic of rich inter-fiber capillary channels, rapid moisture transmission is facilitated, the moisture enters the inter-fiber capillary channels, and the integral moisture transport capacity of the photo-thermal water evaporation material is improved.
Secondly, the nanofiber-based knitted fabric is obtained by knitting the nanofiber hollow yarns through the nanofiber yarn knitting device, the structure of the knitted fabric is favorable for forming a multi-scale three-dimensional structure, on one hand, the full dispersion of the evaporated photothermal conversion material in the three-dimensional structure of the knitted fabric can be improved, on the other hand, light can be promoted to fully enter the interior of the knitted fabric to act on the photothermal conversion material, and the overall photothermal water evaporation efficiency of the photothermal water evaporation material can be improved.
Thirdly, the continuous production of the light and hot water evaporation material can be realized, the device has a simple structure, is simple and convenient to operate, and is beneficial to improving the production efficiency of the light and hot water evaporation material and reducing the production cost.
Drawings
FIG. 1 is a schematic view of the working state of a device for preparing a counter-spraying type nanofiber hollow yarn according to an embodiment of the invention.
Fig. 2 is a schematic perspective view of a device for preparing a jet-type nanofiber hollow yarn according to an embodiment of the invention.
Fig. 3 is a schematic top view of a device for preparing a counter-spraying nanofiber hollow yarn according to an embodiment of the invention.
FIG. 4 is a schematic side view of a device for preparing a counter-spraying nanofiber hollow yarn according to an embodiment of the invention.
Fig. 5 is a schematic front structure diagram of a device for preparing a counter-spraying nanofiber hollow yarn according to an embodiment of the invention.
Fig. 6 is a schematic structural view of a photothermal conversion material vapor deposition device according to an embodiment of the present invention.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
A device for preparing a photo-thermal water evaporation nanofiber knitted assembly comprises a jet type nanofiber hollow yarn preparation device, a nanofiber yarn knitting device and a photo-thermal conversion material evaporation device.
As shown in fig. 1-5, the device for preparing the counter-spraying nanofiber hollow yarn comprises a fiber-collecting yarn disc 9 driven to rotate, a hole-forming guide wire 12, an electrostatic spinning nozzle 5, a high-voltage generator 8, a yarn guide hole disc 4, a traction roller 13 and a yarn barrel holder 1.
The fiber-collecting yarn disc 9 is made of conductive metal and is in a partial spherical shell shape, and the fiber-collecting yarn disc 9 is connected with the first servo motor 7 and is driven to rotate by the first servo motor 7. The pore-forming guide wire 12 is horizontally arranged along the central axis of the fiber-collecting yarn disk 9 and passes through the yarn guide hole of the yarn guide hole disk 4. The pore-forming guidewire 12 may be formed from non-soluble filaments or soluble polymeric filaments, and "soluble" and "non-soluble" refer to the solubility of the material of the pore-forming guidewire 12 in the electrospinning solution. The insoluble filament can be a stainless steel wire with the fineness of 0.5-5 mm or a glass fiber filament with the fineness of 10-500 mu m, and when the porous guide wire 12 is the insoluble filament, the surface of the insoluble filament is coated with a soluble material or a lubricating material so as to improve the sliding performance of the outer-layer nanofiber hollow yarn 3 relative to the porous guide wire 12 when being pulled.
The electrostatic spinning nozzles 5 are symmetrically arranged on two sides of the fiber-collecting yarn disc 9 to form a counter-spraying structure. The electrostatic spinning nozzle 5 is connected with a second servo motor 1002 through an insulating transmission shaft 1001, and can be driven by the second servo motor 1002 to be lifted and lowered in the vertical direction for position adjustment. The electric field of the electrostatic spinning nozzle 5 is controlled by an electric field control ring 1003, the electric field control ring 1003 is connected with the anode of the high voltage generator 8, and the voltage regulating range of the high voltage generator 8 is 0-80 kV.
Carry over pinch rolls 13 and creel 1 set gradually in the low reaches of leading yarn hole dish 4, and creel 1 passes through the rotation of third servo motor 2 drive yarn section of thick bamboo, and when pore-forming seal wire 12 adopted non-soluble filament, pore-forming seal wire 12 passed between the roller of carry over pinch rolls 13, and carry over pinch rolls 13 and pore-forming seal wire 12 cooperate and pull outer nanofiber hollow yarn 3, as shown in figure 4.
The nanofiber yarn knitting device adopts a flat knitting machine or a circular knitting machine, and the nanofiber hollow yarn 3 prepared by the jet type nanofiber hollow yarn preparation device is knitted by the nanofiber yarn knitting device to obtain the nanofiber-based knitted fabric 17.
The photo-thermal conversion material evaporation device adopts high vacuum resistance evaporation coating equipment, and coating materials are various metal and alloy materials. As shown in fig. 6, the photothermal conversion material evaporation apparatus includes a vacuum hood 14, a thermal evaporation container 15, and a fabric holder, the thermal evaporation container 15 employs a crucible, both the thermal evaporation container 15 and the fabric holder are disposed in the vacuum hood 14, and the fabric holder is located above the thermal evaporation container 15. The nanofiber-based knitted fabric 17 is subjected to surface photothermal conversion material evaporation through a photothermal conversion material evaporation device, raw materials of the photothermal conversion material are placed in a crucible and can be electrically heated to generate sublimation vapor 16, and the sublimation vapor 16 is finally deposited on the nanofiber-based knitted fabric 17 to form a multi-scale pore photothermal water evaporation nanofiber knitted fabric assembly.
The method for preparing the photo-thermal water evaporation nanofiber knitted assembly comprises the following steps of:
(1) adjusting the relative position and the spinning direction of the electrostatic spinning nozzle 5;
(2) respectively injecting high polymer spinning solution into the electrostatic spinning nozzles 5 at two sides;
(3) starting the fiber-collecting yarn disc 9 to rotate and adjusting the rotating speed;
(4) starting the electrostatic spinning nozzle 5, opening the high-voltage generator 8 and adjusting the spinning voltage until the electrostatic spinning nozzle 5 generates a continuous and stable spinning jet 6;
(5) the spinning jet 6 is stretched, solidified and deposited on a rotating fiber-collecting yarn disc 9;
(6) leading the nanofiber bundle deposited on the integrated yarn disc 9 to a pore-forming guide wire 12 to form a nanofiber twisted triangular cone 11, twisting the nanofiber bundle to form a nanofiber hollow yarn 3, and leading the nanofiber hollow yarn out through the pore-forming guide wire 12;
(7) the nano-fiber hollow yarn 3 is drawn by a traction roller 13 to sequentially pass through a yarn guide hole disc 4 and the traction roller 13 and is continuously conveyed to a yarn barrel frame 1 for winding and collection;
(8) knitting the nanofiber hollow yarns 3 by using a nanofiber yarn knitting device to obtain nanofiber-based knitted fabrics 17;
(9) the nanofiber-based knitted fabric 17 was subjected to vapor deposition treatment by a photothermal conversion material vapor deposition device to form a photothermal conversion material deposition layer on the surface, thereby obtaining a photothermal water evaporation nanofiber knitted fabric assembly.
Example 1
The multi-scale pore channel photo-thermal water evaporation nanofiber knitted fabric assembly is prepared by adopting a high polymer solution prepared from Polyacrylonitrile (PAN) and N-N Dimethylformamide (DMF).
The mass fraction of the prepared PAN high polymer solution is 10 percent. Respectively adjusting the distance between the two pairs of brush type electrostatic spinning nozzles 5 and the yarn axis to be 16cm and the relative height of each electric field control ring to be 1 cm; respectively injecting high polymer spinning solution into the two pairs of brush type electrostatic spinning nozzles 5; respectively opening driving motors of the two pairs of brush type electrostatic spinning nozzles 5; opening the first servo motor 7 of the fiber-collecting yarn disc 9 and setting the rotating speed to be 25 r/min; opening the high voltage generator 8 and slowly adjusting to 40 kV; a large amount of spinning jet flow 6 flies to the rotating fiber-collecting yarn disc 9 under the action of a high-voltage electrostatic field, the solvent is volatilized in the motion process of the spinning jet flow 6, and the spinning jet flow 6 is stretched, solidified and deposited on the rotating fiber-collecting yarn disc 9; selecting an insoluble stainless steel wire as the pore-forming guide wire 12 and coating a little of lubricating material nano graphite powder on the surface of the pore-forming guide wire; leading the nanofiber bundle deposited on the integrated yarn disc 9 to a pore-forming guide wire 12 to form a nanofiber twisted triangular cone 11, twisting the nanofiber bundle to form a nanofiber hollow yarn 3, and leading the nanofiber hollow yarn out through the pore-forming guide wire 12; the nano-fiber hollow yarn 3 is drawn by a traction roller 13 to sequentially pass through a yarn guide hole disc 4 and the traction roller 13 and is continuously conveyed to a yarn barrel frame 1 for winding and collection; the nanofiber yarn knitting device adopts a flat knitting machine or a circular knitting machine to prepare the nanofiber hollow yarns 3 into nanofiber-based knitted fabrics 17; the nanofiber-based knitted fabric 17 is subjected to vapor deposition of a 60nm thick plasmon material gold by a photothermal conversion material vapor deposition device to form a multi-scale pore channel photothermal water evaporation nanofiber knitted fabric assembly.
Example 2
The multi-scale pore channel photo-thermal water evaporation nanofiber knitted fabric assembly is prepared by adopting a high polymer solution prepared from Polyacrylonitrile (PAN) and N-N Dimethylformamide (DMF).
The mass fraction of the prepared PAN high polymer solution is 12%. Respectively adjusting the distance between the two pairs of brush type electrostatic spinning nozzles 5 and the yarn axis to be 17cm and the relative height of each electric field control ring to be 1 cm; respectively injecting high polymer spinning solution into the two pairs of brush type electrostatic spinning nozzles 5; respectively opening driving motors of the two pairs of brush type electrostatic spinning nozzles 5; opening the first servo motor 7 of the fiber-collecting yarn disc 9 and setting the rotating speed to be 28 r/min; opening the high voltage generator 8 and slowly adjusting to 45 kV; a large amount of spinning jet flow 6 flies to the rotating fiber-collecting yarn disc 9 under the action of a high-voltage electrostatic field, the solvent is volatilized in the motion process of the spinning jet flow 6, and the spinning jet flow 6 is stretched, solidified and deposited on the fiber-collecting yarn disc 9; selecting an insoluble stainless steel wire as the pore-forming guide wire 12 and coating a little of lubricating material nano graphite powder on the surface of the pore-forming guide wire; leading out the fiber bundle deposited on the rotary integrated yarn disc by using a hollow lead screw 12 to form a nanofiber twisting triangular cone 11; leading the nanofiber bundle deposited on the integrated yarn disc 9 to a pore-forming guide wire 12 to form a nanofiber twisted triangular cone 11, twisting the nanofiber bundle to form a nanofiber hollow yarn 3, and leading the nanofiber hollow yarn out through the pore-forming guide wire 12; the nano-fiber hollow yarn 3 is drawn by a traction roller 13 to sequentially pass through a yarn guide hole disc 4 and the traction roller 13 and is continuously conveyed to a yarn barrel frame 1 for winding and collection; the nanofiber yarn knitting device adopts a flat knitting machine or a circular knitting machine to prepare the nanofiber hollow yarns 3 into nanofiber-based knitted fabrics 17; the nanofiber-based knitted fabric 17 is subjected to vapor deposition of a plasmon material gold with the thickness of 40nm by a photo-thermal conversion material vapor deposition device to form a multi-scale pore channel photo-thermal water evaporation nanofiber knitted fabric assembly.
Claims (10)
1. The utility model provides a knitting aggregate preparation facilities of light and heat water evaporation nanofiber, includes the hollow yarn preparation facilities of formula nanofiber of spouting, its characterized in that: the device comprises a nanofiber yarn knitting device and a photothermal conversion material evaporation device, wherein the opposite-spraying type nanofiber hollow yarn preparation device comprises a fiber-collecting yarn-forming disc (9), a pore-forming guide wire (12), an electrostatic spinning spray head (5), a high-voltage generator (8), a yarn guide hole disc (4), a traction roller (13) and a yarn barrel frame (1) which are driven to rotate, the pore-forming guide wire (12) is arranged along the central axis of the fiber-collecting yarn-forming disc (9) and penetrates through the yarn guide hole of the yarn guide hole disc (4), the electrostatic spinning spray head (5) is symmetrically arranged on two sides of the fiber-collecting yarn-forming disc (9), the high-voltage generator (8) is electrically connected with the electrostatic spinning spray head (5), the traction roller (13) and the yarn barrel frame (1) are sequentially arranged on the downstream of the yarn guide hole disc (4), and the nanofiber hollow yarn (3) prepared by the opposite-spraying type nanofiber hollow yarn preparation device is knitted through the nanofiber yarn device to obtain the nanofiber-based knitted fabric (17) The nanofiber-based knitted fabric (17) is subjected to surface photothermal conversion material deposition by a photothermal conversion material deposition device.
2. The apparatus for manufacturing a knitted assembly of photothermal and water evaporation nanofibers according to claim 1, wherein: the pore-forming guide wire (12) is an insoluble filament or a soluble high polymer filament.
3. The apparatus for manufacturing a knitted assembly of photothermal and water evaporation nanofibers according to claim 2, wherein: the insoluble filament is a stainless steel wire with the fineness of 0.5-5 mm or a glass fiber filament with the fineness of 10-500 mu m.
4. The apparatus for manufacturing a knitted assembly of photothermal and water evaporation nanofibers according to claim 2, wherein: when the pore-forming guide wire (12) adopts insoluble filaments, the surface of the insoluble filaments is coated with soluble materials or lubricating materials.
5. The apparatus for manufacturing a knitted assembly of photothermal and water evaporation nanofibers according to claim 2, wherein: when the pore-forming guide wire (12) adopts insoluble filaments, the pore-forming guide wire (12) passes through the rollers of the traction roller (13), and the traction roller (13) is matched with the pore-forming guide wire (12) to pull the nanofiber hollow yarns (3) on the outer layer.
6. The apparatus for manufacturing a knitted assembly of photothermal and water evaporation nanofibers according to claim 1, wherein: the integrated yarn disc (9) is driven to rotate by a first servo motor (7), and the yarn barrel frame (1) drives a yarn barrel to rotate by a third servo motor (2).
7. The apparatus for manufacturing a knitted assembly of photothermal and water evaporation nanofibers according to claim 1, wherein: the electrostatic spinning nozzle (5) is connected with a second servo motor (1002) through an insulating transmission shaft (1001) and is driven by the second servo motor (1002) to adjust the position along the direction vertical to the length direction of the hole forming guide wire (12).
8. The apparatus for manufacturing a knitted assembly of photothermal and water evaporation nanofibers according to claim 1, wherein: the nanofiber yarn knitting device is a flat knitting machine or a circular knitting machine.
9. The apparatus for manufacturing a knitted assembly of photothermal and water evaporation nanofibers according to claim 1, wherein: the photothermal conversion material evaporation device comprises a vacuum cover (14), a thermal steaming container (15) and a fabric fixing frame, wherein the thermal steaming container (15) and the fabric fixing frame are both arranged in the vacuum cover (14), and the fabric fixing frame is positioned above the thermal steaming container (15).
10. A method for manufacturing a photo-thermal water-evaporation nanofiber knitted assembly, characterized by using the device for manufacturing a photo-thermal water-evaporation nanofiber knitted assembly according to any one of claims 1 to 9, comprising the steps of:
(1) the relative position and the spinning direction of the electrostatic spinning nozzles (5) at the two sides are respectively adjusted;
(2) respectively injecting high polymer spinning solution into the electrostatic spinning nozzles (5) at two sides;
(3) starting the fiber-collecting yarn disc (9) to rotate and adjusting the rotating speed;
(4) starting the electrostatic spinning nozzle (5), opening the high-voltage generator (8) and adjusting the spinning voltage until the electrostatic spinning nozzle (5) generates a continuous and stable spinning jet (6);
(5) the spinning jet (6) is stretched, solidified and deposited on a rotating fiber-collecting yarn disc (9);
(6) leading the nanofiber bundle deposited on the fiber-integrated yarn disc (9) to a pore-forming guide wire (12) to form a nanofiber twisted triangular cone (11), wherein the nanofiber bundle is twisted to form a nanofiber hollow yarn (3) and is led out through the pore-forming guide wire (12);
(7) the nano-fiber hollow yarns (3) are drawn by a drawing roller (13) to sequentially pass through a yarn guide hole disc (4) and the drawing roller (13) and are continuously conveyed to a yarn barrel frame (1) for winding and collection;
(8) knitting the nanofiber hollow yarns (3) through a nanofiber yarn knitting device to obtain nanofiber-based knitted fabrics (17);
(9) the nanofiber-based knitted fabric (17) is subjected to vapor deposition treatment by a photothermal conversion material vapor deposition device to form a photothermal conversion material deposition layer on the surface, thereby obtaining a photothermal water evaporation nanofiber knitted fabric assembly.
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