CN111441093B - Needleless air spinning device for preparing composite nanofiber and working method of needleless air spinning device - Google Patents
Needleless air spinning device for preparing composite nanofiber and working method of needleless air spinning device Download PDFInfo
- Publication number
- CN111441093B CN111441093B CN202010438123.9A CN202010438123A CN111441093B CN 111441093 B CN111441093 B CN 111441093B CN 202010438123 A CN202010438123 A CN 202010438123A CN 111441093 B CN111441093 B CN 111441093B
- Authority
- CN
- China
- Prior art keywords
- spinning solution
- rotating body
- rotator
- receiving device
- back taper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000009987 spinning Methods 0.000 title claims abstract description 98
- 239000002121 nanofiber Substances 0.000 title claims abstract description 41
- 239000002131 composite material Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 55
- 239000011248 coating agent Substances 0.000 claims abstract description 23
- 238000000576 coating method Methods 0.000 claims abstract description 23
- 238000005507 spraying Methods 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 66
- 239000010410 layer Substances 0.000 claims description 40
- 239000012792 core layer Substances 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000011258 core-shell material Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000002086 nanomaterial Substances 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 5
- 238000004401 flow injection analysis Methods 0.000 description 5
- 239000004793 Polystyrene Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010041 electrostatic spinning Methods 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920002239 polyacrylonitrile Polymers 0.000 description 2
- 244000126211 Hericium coralloides Species 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention discloses a needleless air spinning device for preparing composite nano fibers and a working method thereof, belonging to the technical field of nano material manufacturing. The inner cavity of the back-taper rotator is communicated with the gas boosting system and the nuclear layer spinning solution supply system, and the gas boosting system is used for applying pressure to the nuclear layer spinning solution in the inner cavity of the back-taper rotator; the bottom of the back taper rotator is provided with a liquid outlet, the top of the back taper rotator is connected with the end cover through a rotary sealing structure, and the back taper rotator is connected with a rotary power system; the shell spinning solution coating system is arranged opposite to the outer conical surface of the inverted cone rotating body; the high-temperature high-speed airflow spraying system and the receiving device are respectively and oppositely arranged at two sides of the liquid outlet at the bottom of the inverted cone rotator. The method has reasonable structural design and short process flow, can obtain the core-shell structure composite nano fiber with different structures and performances, has high efficiency and large yield, and has good application prospect.
Description
Technical Field
The invention belongs to the technical field of nano material manufacturing, and particularly relates to a needleless air spinning device for preparing composite nano fibers and a working method thereof.
Background
Functional fibers of special structure have many excellent and unique properties, with potential value in many fields of application. With the rapid development of nano technology, the preparation technology of nano fibers has become one of the important props for promoting the progress of fiber science and technology. The core-shell structure nanofiber formed by combining multiple materials in the axial direction is formed by multiple-component fibers with inner and outer layers, and is more excellent in the aspects of functionality, mechanical property, stability and the like compared with a single-spinning nanofiber. For example, if the core layer material is removed, hollow ultrafine fibers can be obtained. In addition, the polymer with good spinnability is used as a shell layer, and the polymer with poor spinnability is used as a core layer, so that the spinnability of the polymer difficult to spin is improved. Because of the specificity of the core-shell nanofiber structure, the core-shell nanofiber has extremely important application and value in the aspects of catalytic filtration, gas storage, drug slow release, tissue engineering scaffold, wound dressing and the like, and is highly valued and widely studied in the scientific community.
At present, the core-shell structure nanofiber manufacturing process with wider research and application mainly comprises three types of electrostatic spinning, melt-blown spinning and composite spinning. However, the three methods have certain problems, namely, the electrostatic spinning method has low yield, the needle is easy to block, and the high-voltage electrostatic danger exists; the diameter of the fiber obtained by the melt-blown spinning method is thicker, and a higher spinning temperature is needed; the composite spinning method has complex equipment, long process flow, high temperature and chemical treatment and the like. The method is difficult to meet the manufacturing characteristics of mass, low cost, consistency and the like of the nanofibers, and limits the large-area industrialized application of the core-shell structure nanofibers.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a needleless air spinning device for preparing composite nanofibers and a working method thereof, which have reasonable structural design and short process flow, can obtain core-shell structure composite nanofibers with different structures and performances, and have high efficiency, large yield and good application prospect.
The invention is realized by the following technical scheme:
The invention discloses a needleless air spinning device for preparing composite nano fibers, which comprises a gas boosting system, an inverted cone rotating body, a nuclear layer spinning solution supply system, a shell layer spinning solution coating system, an end cover, a rotating force system, a high-temperature high-speed air jet system and a receiving device, wherein the air boosting system is arranged on the end cover;
The inner cavity of the back-taper rotator is communicated with the gas boosting system and the nuclear layer spinning solution supply system, and the gas boosting system is used for applying pressure to the nuclear layer spinning solution in the inner cavity of the back-taper rotator; the bottom of the back taper rotator is provided with a liquid outlet, the top of the back taper rotator is connected with the end cover through a rotary sealing structure, and the back taper rotator is connected with a rotary power system; the shell spinning solution coating system is arranged opposite to the outer conical surface of the inverted cone rotating body; the high-temperature high-speed airflow spraying system and the receiving device are respectively and oppositely arranged at two sides of the liquid outlet at the bottom of the inverted cone rotator.
Preferably, the cone angle of the back taper rotator is 10-160 deg..
Preferably, the nuclear layer spinning solution supply system comprises a liquid storage tank and a liquid supply pipe, one end of the liquid supply pipe is connected with the liquid storage tank, the other end of the liquid supply pipe penetrates through the end cover and stretches into the inner cavity of the inverted cone rotating body, a sealing device is arranged between the liquid supply pipe and the end cover, and a valve is arranged on the liquid supply pipe.
Preferably, the shell spinning solution coating system comprises a coating machine and a spray gun, wherein the coating machine is connected with the spray gun, and the spray gun is opposite to the outer conical surface of the back taper rotator.
Preferably, the rotary power system comprises a motor, a transmission system and a rotating shaft, wherein the motor is connected with the transmission system, the transmission system is connected with the rotating shaft, and the rotating shaft is connected with the inverted cone rotating body.
Preferably, the high-temperature high-speed airflow spraying system comprises a high-temperature high-speed airflow generating device, a connecting pipe and a plurality of airflow nozzles which are connected in sequence; the air flow nozzle and the receiving device are respectively and oppositely arranged at two sides of the liquid outlet at the bottom of the inverted cone rotator.
Further preferably, the number of the air flow nozzles is 1 to 5, and the air outlet of the air flow nozzle is circular, rectangular, triangular or trapezoidal.
Preferably, the receiving means is a plate receiving means or a roller receiving means; when the receiving device is a flat receiving device, a plurality of through holes are formed in the receiving device, and a negative pressure generating device is arranged on one side of the receiving device, which is opposite to the inverted cone rotating body; when the receiving device is a roller receiving device, the negative pressure generating device is connected inside the receiving device.
The working method of the needleless air spinning device for preparing the composite nanofiber disclosed by the invention comprises the following steps of:
step 1: turning on a rotating power system to enable the inverted cone rotating body to rotate until reaching a preset rotating speed; opening a high-temperature high-speed air flow injection system to enable air flow injection to be stable and reach preset temperature and speed;
Step 2: opening a nuclear layer spinning solution supply system to enable the nuclear layer spinning solution to be filled into the inner cavity of the back taper rotating body, and opening a gas boosting system to enable the nuclear layer spinning solution to continuously flow out from a liquid outlet at the bottom of the back taper rotating body; opening a shell spinning solution coating system to coat the shell spinning solution on the outer conical surface of the back taper rotating body and enable the shell spinning solution to flow downwards along the outer conical surface of the back taper rotating body;
Step 3: the shell layer spinning solution wraps the core layer spinning solution to form coaxial liquid drops, and air flow sprayed by the high-temperature high-speed air flow spraying system blows, draws and refines the coaxial liquid drops and then flies to the receiving device to form the composite nanofiber.
Preferably, the rotating speed of the back taper rotating body is 10-3600 r/min; the outflow speed of the nuclear layer spinning solution from a liquid outlet at the bottom of the inverted cone rotating body is 0.1-10 ml/min; the coating rate of the shell spinning solution is 0.01-10 ml/min; the temperature of the air flow sprayed by the high-temperature high-speed air flow spraying system is 10-500 ℃ and the speed is 5-300 m/s.
Compared with the prior art, the invention has the following beneficial technical effects:
The needleless air spinning device for preparing the composite nanofiber disclosed by the invention has the advantages that the core layer spinning solution flowing out along the liquid outlet at the bottom of the inverted cone rotating body and the shell layer spinning solution flowing down along the outer conical surface of the inverted cone rotating body form core-shell coaxial liquid drops, the defect that the existing spinning head is easy to block is overcome, and the cleaning maintenance and replacement cost is greatly reduced. The formed coaxial liquid drops are blown and attenuated by a high-temperature high-speed airflow jet system, so that the composite nano fiber with the core-shell structure can be prepared in one step, the equipment investment cost is saved, and the production efficiency is improved. The device has simple process flow and high degree of automation, can greatly improve the production efficiency of the composite nanofiber, and has good application prospect.
Further, the cone angle of the back taper rotator is 10-160 degrees, which is beneficial to controlling the down flow speed of the shell spinning solution.
Further, the negative pressure generating device can facilitate the adsorption of the product onto the receiving device.
The working method of the needleless air spinning device for preparing the composite nanofiber disclosed by the invention is simple to operate, high in automation degree, high in production efficiency and high in yield, and can be used for large-scale industrial production.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a needleless air spinning device for preparing composite nanofibers of the present invention;
FIG. 2 is a transmission electron microscope image of the composite nanofiber prepared in example 1 of the present invention;
FIG. 3 is a transmission electron microscope image of the composite nanofiber prepared in example 2 of the present invention.
In the figure: the device comprises a 1-gas boosting system, a 2-back taper rotating body, a 3-nuclear layer spinning solution supply system, a 4-shell spinning solution coating system, a 5-end cover, a 6-rotating power system, a 7-high-temperature high-speed airflow spraying system and an 8-receiving device.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings and specific examples, which are given by way of illustration of the invention and not by way of limitation:
as shown in figure 1, the needleless air spinning device for preparing composite nano fibers comprises a gas boosting system 1, an inverted cone rotating body 2, a nuclear layer spinning solution supply system 3, a shell layer spinning solution coating system 4, an end cover 5, a rotating power system 6, a high-temperature high-speed air jet system 7 and a receiving device 8.
The cone angle of the back taper rotary body 2 is generally 10 ° to 160 °. The nuclear layer spinning solution supply system 3 comprises a liquid storage tank and a liquid supply pipe, one end of the liquid supply pipe is connected with the liquid storage tank, the other end of the liquid supply pipe penetrates through the end cover 5 and stretches into the inner cavity of the inverted cone rotary body 2, a sealing device is arranged between the liquid supply pipe and the end cover 5, and a valve is arranged on the liquid supply pipe. The shell spinning solution coating system 4 comprises a coating machine and a spray gun (a solution propelling device such as a spray can, a syringe and the like can also be adopted), and the coating machine is connected with the spray gun. The high-temperature high-speed airflow spraying system 7 comprises a high-temperature high-speed airflow generating device, a connecting pipe and a plurality of airflow nozzles which are connected in sequence. The number of the air flow nozzles is generally 1-5, and the air outlets of the air flow nozzles are generally circular, rectangular, triangular or trapezoidal. The rotating power system 6 comprises a motor, a transmission system and a rotating shaft, wherein the motor is connected with the transmission system, and the transmission system is connected with the rotating shaft. The receiving device 8 is a flat plate receiving device or a roller receiving device; when the receiving device 8 is a flat plate receiving device, a plurality of through holes are formed in the receiving device 8, and a negative pressure generating device is arranged on one side of the receiving device 8, which is opposite to the inverted cone rotating body 2; when the receiving device 8 is a roller receiving device, the interior of the receiving device 8 is communicated with a negative pressure generating device.
The inner cavity of the back-taper rotator 2 is communicated with liquid supply pipes of the gas boosting system 1 and the nuclear layer spinning liquid supply system 3, and the gas boosting system 1 is used for applying pressure to the nuclear layer spinning liquid in the inner cavity of the back-taper rotator 2; the bottom of the back taper rotator 2 is provided with a liquid outlet, the top is connected with the end cover 5 through a rotary sealing structure, and the sealing can be realized through mechanical structures such as labyrinth sealing, comb tooth sealing and the like, and also through rotary sealing rings and the like. The back taper rotator 2 is connected with a rotating shaft of a rotating power system 6; the spray gun of the shell spinning solution coating system 4 is arranged opposite to the outer conical surface of the back-taper rotator 2; the air flow nozzle and the receiving device 8 of the high-temperature high-speed air flow injection system 7 are respectively and oppositely arranged at two sides of the liquid outlet at the bottom of the inverted cone rotator 2.
The relevant parameters of the components can be referred to as follows:
The back taper rotator 2 can be made of metal materials, inorganic nonmetallic materials, organic materials, composite materials and the like, the radius of the top end of the back taper rotator 2 is 1-50 cm, and the radius of the liquid outlet at the bottom is 0.001-10 mm. The horizontal distance between the air flow nozzle and the central line of the inverted cone rotating body 2 is 3-50 mm, the vertical distance between the air flow nozzle and the bottommost end of the liquid outlet at the bottom of the inverted cone rotating body 2 is 0-50 mm, and the area of the air outlet of the air flow nozzle is 0.1-100 cm 2. The horizontal distance between the receiving device 8 and the center line of the back taper rotator 2 is 5 cm to 150cm. The core layer spinning solution and the shell layer spinning solution are precursor solutions comprising various organic polymers, inorganic powder and organic and inorganic nano materials.
The working method of the needleless air spinning device for preparing the composite nanofiber comprises the following steps of:
Step 1: turning on the rotation power system 6 to enable the back taper rotator 2 to rotate until reaching a preset rotation speed; opening a high-temperature high-speed air flow injection system 7 to enable air flow injection to be stable and reach preset temperature and speed;
Step 2: opening a nuclear layer spinning solution supply system 3 to enable the nuclear layer spinning solution to be filled into the inner cavity of the back taper rotator 2, and opening a gas boosting system 1 to enable the nuclear layer spinning solution to continuously flow out from a liquid outlet at the bottom of the back taper rotator 2; opening a shell spinning solution coating system 4 to coat the shell spinning solution on the outer conical surface of the back taper rotary body 2 and enable the shell spinning solution to flow downwards along the outer conical surface of the back taper rotary body 2;
step 3: the shell layer spinning solution wraps the core layer spinning solution to form coaxial liquid drops, and the coaxial liquid drops are blown, pulled and thinned by the air flow sprayed by the high-temperature high-speed air flow spraying system 7 and then fly on the receiving device 8 to form the composite nanofiber.
The rotating speed of the back taper rotating body 2 is 10-3600 r/min; the outflow speed of the nuclear layer spinning solution from the liquid outlet at the bottom of the inverted cone rotator 2 is 0.1-10 ml/min; the coating rate of the shell spinning solution is 0.01-10 ml/min; the temperature of the air flow sprayed by the high-temperature high-speed air flow spraying system 7 is 10-500 ℃ and the speed is 5-300 m/s.
Example 1
The inverted cone rotating body 2 is made of organic working plastic, the radius of the top end is 5cm, the radius of the liquid outlet at the bottom is 0.5mm, the cone angle is 30 ℃, and the rotation speed of the inverted cone rotating body 2 is 600r/min; the core layer spinning solution is Polyacrylonitrile (PAN) with the mass fraction of 10%, and the shell layer spinning solution is Polystyrene (PS) with the mass fraction of 22%; the output air pressure of the air boosting system 1 is 0.1MPa, and the outflow rate of the nuclear layer spinning solution is 0.2ml/min; the coating rate of the shell spinning solution is 0.2ml/min; the temperature of the air flow sprayed by the air flow nozzle is 70 ℃, the speed is 120m/s, the horizontal distance between the air flow nozzle and the central line of the inverted cone rotating body 2 is 8mm, the vertical distance between the air flow nozzle and the bottommost end of the liquid outlet at the bottom of the inverted cone rotating body 2 is 3mm, the number of the air flow nozzles is 1, the air outlets of the air flow nozzles are circular, and the area of the air outlets of the air flow nozzles is 0.28cm 2; the receiving device 8 is a flat plate receiving device, holes are formed, the mesh number is 100 meshes, no negative pressure generating device exists, and the horizontal distance between the receiving device 8 and the central line of the inverted cone rotating body 2 is 80cm.
The PAN-PS nanofiber with the core-shell structure is shown in figure 2, wherein the average diameter of the core layer fiber is 280nm, and the average diameter of the shell layer nanofiber is 550nm.
Example 2
The inverted cone rotating body 2 is made of organic working plastic, the radius of the top end is 5cm, the radius of the liquid outlet at the bottom is 0.5mm, the cone angle is 60 ℃, and the rotation speed of the inverted cone rotating body 2 is 500r/min; the core layer spinning solution is nano titanium dioxide (25 nmTiO 2) with the mass fraction of 5%, and the shell layer spinning solution is Polystyrene (PS) with the mass fraction of 20%; the output air pressure of the air boosting system 1 is 0.08MPa, and the outflow rate of the nuclear layer spinning solution is 0.15ml/min; the coating rate of the shell spinning solution is 0.22ml/min; the temperature of the air flow sprayed by the air flow nozzle is 80 ℃, the speed is 150m/s, the horizontal distance between the air flow nozzle and the central line of the inverted cone rotating body 2 is 10mm, the vertical distance between the air flow nozzle and the bottommost end of the liquid outlet at the bottom of the inverted cone rotating body 2 is 5mm, the number of the air flow nozzles is 1, the air outlet of the air flow nozzle is circular, and the area is 0.5cm 2; the receiving device 8 is a flat plate receiving device, holes are formed, the mesh number is 80, the back surface is provided with a negative pressure generating device, and the horizontal distance between the receiving device 8 and the central line of the inverted cone rotating body 2 is 65cm.
The prepared TiO 2 -PS nanofiber with the core-shell structure is shown in figure 3, wherein the average diameter of the core layer nano TiO 2 is 25nm, and the average diameter of the shell layer nano fiber is 450nm.
It is to be understood that the foregoing description is only a part of the embodiments of the present invention, and that the equivalent changes of the system described according to the present invention are included in the protection scope of the present invention. Those skilled in the art can substitute the described specific examples in a similar way without departing from the structure of the invention or exceeding the scope of the invention as defined by the claims, all falling within the scope of protection of the invention.
Claims (8)
1. The needleless air spinning device for preparing the composite nanofiber is characterized by comprising a gas boosting system (1), an inverted cone rotating body (2), a nuclear layer spinning solution supply system (3), a shell layer spinning solution coating system (4), an end cover (5), a rotating power system (6), a high-temperature high-speed air jet system (7) and a receiving device (8);
The inner cavity of the back-taper rotator (2) is communicated with the gas boosting system (1) and the nuclear layer spinning solution supply system (3), and the gas boosting system (1) is used for applying pressure to the nuclear layer spinning solution in the inner cavity of the back-taper rotator (2); the bottom of the back taper rotator (2) is provided with a liquid outlet, the top of the back taper rotator is connected with the end cover (5) through a rotary sealing structure, and the back taper rotator (2) is connected with the rotary power system (6); the shell spinning solution coating system (4) is arranged opposite to the outer conical surface of the back-taper rotating body (2); the high-temperature high-speed airflow injection system (7) and the receiving device (8) are respectively and oppositely arranged at two sides of a liquid outlet at the bottom of the inverted cone rotating body (2);
The cone angle of the inverted cone rotating body (2) is 10-160 degrees, and the high-temperature high-speed airflow spraying system (7) comprises a high-temperature high-speed airflow generating device, a connecting pipe and a plurality of airflow nozzles which are connected in sequence; the air flow nozzle and the receiving device (8) are respectively and oppositely arranged at two sides of a liquid outlet at the bottom of the inverted cone rotator (2).
2. The needleless air spinning device for preparing composite nanofibers according to claim 1, wherein the core layer spinning solution supply system (3) comprises a liquid storage tank and a liquid supply pipe, one end of the liquid supply pipe is connected with the liquid storage tank, the other end of the liquid supply pipe penetrates through the end cover (5) and stretches into the inner cavity of the inverted cone rotating body (2), a sealing device is arranged between the liquid supply pipe and the end cover (5), and a valve is arranged on the liquid supply pipe.
3. The needleless air spinning device for preparing composite nanofibers according to claim 1, wherein the shell spinning solution coating system (4) comprises a coater and a spray gun, the coater is connected with the spray gun, and the spray gun faces the outer conical surface of the back taper rotating body (2).
4. Needleless air spinning apparatus for preparing composite nanofibers according to claim 1, characterized in that the rotary power system (6) comprises a motor, a transmission system and a spindle, the motor being connected to the transmission system, the transmission system being connected to the spindle, the spindle being connected to the back taper rotator (2).
5. The needleless air spinning device for preparing composite nanofibers according to claim 1, wherein the number of air flow nozzles is 1 to 5, and the air outlet of the air flow nozzles is circular, rectangular, triangular or trapezoidal.
6. Needleless air spinning device for preparing composite nanofibers according to claim 1, characterized in that the receiving means (8) is a flat plate receiving means or a drum receiving means; when the receiving device (8) is a flat plate receiving device, a plurality of through holes are formed in the receiving device (8), and a negative pressure generating device is arranged on one side of the receiving device (8) opposite to the inverted cone rotating body (2); when the receiving device (8) is a roller receiving device, the negative pressure generating device is connected inside the receiving device (8).
7. The method for operating a needleless air spinning device for preparing composite nanofibers according to any one of claims 1 to 6, comprising the steps of:
Step 1: opening a rotating power system (6) to enable the back taper rotating body (2) to rotate until reaching a preset rotating speed; opening a high-temperature high-speed airflow spraying system (7) to enable airflow to be sprayed until the airflow is stable and reaches a preset temperature and speed;
Step 2: opening a nuclear layer spinning solution supply system (3) to enable the nuclear layer spinning solution to be filled into the inner cavity of the back taper rotating body (2), and opening a gas boosting system (1) to enable the nuclear layer spinning solution to continuously flow out from a liquid outlet at the bottom of the back taper rotating body (2); opening a shell spinning solution coating system (4) to coat the shell spinning solution on the outer conical surface of the back taper rotating body (2) and enable the shell spinning solution to flow downwards along the outer conical surface of the back taper rotating body (2);
Step 3: the shell layer spinning solution wraps the core layer spinning solution to form coaxial liquid drops, and air flow sprayed by the high-temperature high-speed air flow spraying system (7) blows, draws and refines the coaxial liquid drops and then flies to the receiving device (8) to form the composite nanofiber.
8. The working method of the needleless air spinning device for preparing composite nanofibers according to claim 7, wherein the rotating speed of the back taper rotating body (2) is 10-3600 r/min; the outflow speed of the nuclear layer spinning solution from a liquid outlet at the bottom of the inverted cone rotating body (2) is 0.1-10 ml/min; the coating rate of the shell spinning solution is 0.01-10 ml/min; the temperature of the air flow sprayed by the high-temperature high-speed air flow spraying system (7) is 10-500 ℃, and the speed is 5-300 m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010438123.9A CN111441093B (en) | 2020-05-21 | 2020-05-21 | Needleless air spinning device for preparing composite nanofiber and working method of needleless air spinning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010438123.9A CN111441093B (en) | 2020-05-21 | 2020-05-21 | Needleless air spinning device for preparing composite nanofiber and working method of needleless air spinning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111441093A CN111441093A (en) | 2020-07-24 |
| CN111441093B true CN111441093B (en) | 2024-08-20 |
Family
ID=71657240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010438123.9A Active CN111441093B (en) | 2020-05-21 | 2020-05-21 | Needleless air spinning device for preparing composite nanofiber and working method of needleless air spinning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111441093B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116254628B (en) * | 2023-05-15 | 2023-08-29 | 江苏恒力化纤股份有限公司 | Spinning device for spinning cladding yarn with nanofiber on outer layer through rotor spinning |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212533224U (en) * | 2020-05-21 | 2021-02-12 | 西安工程大学 | Needleless air spinning device for preparing composite nano fibers |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3658634A (en) * | 1970-08-20 | 1972-04-25 | Toray Industries | Fire-retardant sheath and core type conjugate fiber |
| JP2007262591A (en) * | 2006-03-27 | 2007-10-11 | Kawashima Selkon Textiles Co Ltd | Cut pile fabric |
| SI22991A (en) * | 2009-03-19 | 2010-09-30 | BRINOX@@d@o@o | Enhanced processing device for coating particles based on a new air vortex generator concept |
| CN203451653U (en) * | 2013-07-24 | 2014-02-26 | 苏州大学 | Interlayer type electrostatic spinning nozzle |
| CN103526336A (en) * | 2013-10-15 | 2014-01-22 | 东华大学 | Preparation method of oriented shell-core structural superfine composite fiber |
| CN106192027A (en) * | 2016-08-19 | 2016-12-07 | 西安工程大学 | The device of the standby composite nano fiber of air-flow many bubbles spinning |
| CN106119996B (en) * | 2016-09-07 | 2018-02-16 | 厦门大学 | The more fluid jet nozzles of coaxial electrically spun for preparing composite cellulosic membrane |
| JP6863581B2 (en) * | 2017-06-15 | 2021-04-21 | 宇部エクシモ株式会社 | Method for manufacturing long fiber reinforced thermoplastic resin linear material |
-
2020
- 2020-05-21 CN CN202010438123.9A patent/CN111441093B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212533224U (en) * | 2020-05-21 | 2021-02-12 | 西安工程大学 | Needleless air spinning device for preparing composite nano fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111441093A (en) | 2020-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104928774B (en) | For producing the composite Nano micrometer fibers centrifugal spinning equipment of nucleocapsid structure | |
| CN109208090B (en) | Novel needle-free electrostatic spinning device and spinning method thereof | |
| CN202809021U (en) | Electrostatic spinning device | |
| CN109097849B (en) | Nanofiber generating device | |
| CN104611772B (en) | Electrostatic spinning device for preparing coaxial nanofiber in batches | |
| CN104928775A (en) | Centrifugal spinning unit for producing composite nano-micron fibers | |
| CN105350089A (en) | Preparation method and device for three-dimensional support for spinning by utilizing gas-electro spinning based on negative-pressure collection | |
| CN108330550B (en) | Non-nozzle type electrostatic spinning device and using method thereof | |
| CN103774251A (en) | Device for producing nanofiber nonwoven fabric through multi-needle roller type high-voltage electrostatic spinning | |
| CN111441093B (en) | Needleless air spinning device for preparing composite nanofiber and working method of needleless air spinning device | |
| CN106480518A (en) | A kind of electrostatic spinning collection device and the preparation method of gradient orientations structure nano fiber | |
| CN105350098A (en) | Preparation device and method for nanofiber support having three-dimensional structure | |
| CN103451750A (en) | Electrostatic spinning device and method for manufacturing hollow nanometer fiber | |
| CN211947308U (en) | Bubble electrostatic spinning device for preparing nanofiber yarn | |
| Zheng et al. | Concentrated multi-nozzle electrospinning | |
| CN212533224U (en) | Needleless air spinning device for preparing composite nano fibers | |
| CN200999274Y (en) | Multi-sprayer static spinning film producing apparatus | |
| CN103225115A (en) | Method for preparing nano porous material by utilizing electrostatic spinning technique | |
| CN105040121B (en) | A kind of apparatus and method for the liquid blown non-woven spinning for producing micro nanometer fiber | |
| KR20110101505A (en) | Apparatus and method for nano fiber non-woven using rotating nozzles | |
| CN105442065B (en) | A kind of a large amount of centrifugation pneumoelectric spinning equipments for preparing three-dimensional manometer fibrous framework | |
| CN212247284U (en) | Multi-needle spinning fiber preparation device based on online algorithm | |
| CN102808286B (en) | Epoxy resin nanometer fiber felt and preparation method thereof | |
| CN104911720B (en) | A kind of layering preparation method for the film frame that micro/nano fiber structure is controllable | |
| CN205653541U (en) | Bipolar electrode electrostatic spinning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |