CN108396390B - Preparation device of nano material - Google Patents
Preparation device of nano material Download PDFInfo
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- CN108396390B CN108396390B CN201810254850.2A CN201810254850A CN108396390B CN 108396390 B CN108396390 B CN 108396390B CN 201810254850 A CN201810254850 A CN 201810254850A CN 108396390 B CN108396390 B CN 108396390B
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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
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
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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
- D01D4/00—Spinnerette packs; Cleaning thereof
Abstract
According to the nano material preparation device provided by the invention, stable high-pressure gas is connected to the connector, the piston is pushed to extrude the spinning solution in the material cylinder from the liquid outlet, and then the stable high-pressure gas is blown to the spinning solution droplets extruded from the liquid outlet through the air nozzle of the air injection system, so that the droplets are positioned in the middle of the air flow. When the surface tension of the liquid drop and the pulling force of the air flow reach the balance of two forces, continuous spinning trickle is formed, and then the nano fiber is formed. The scheme simplifies the preparation process of the nano material, reduces the production cost, and further solves the problems of low production efficiency, limited production scale and the like of the current fiber preparation.
Description
Technical Field
The invention relates to the field of nano material preparation, in particular to a nano material preparation device.
Background
When the diameter of the nano-fiber is reduced to the nano-scale, small-size effect, surface effect, quantum size effect, quantum tunneling effect and the like begin to appear, so that the fiber per se shows a plurality of specific properties, such as super-elasticity, high electrical conductivity, low thermal conductivity and the like. Therefore, the preparation and physical property research of nanofibers are the hot topic in the field of nanomaterials nowadays.
Conventional methods for preparing nanomaterials include: the spinning method, the template synthesis method, the phase separation method, the self-assembly method, the electrostatic spinning method and the like, but the methods often have the defects of high viscosity requirement, low yield, high cost or large fiber diameter and small fiber length, and cannot be used for continuous production of fibers, and the technologies are always in a laboratory stage and cannot be used for industrial production. Among them, although the most common electrospinning technique is small in diameter of the prepared fiber, the process is complex and high in cost, and high voltage has certain danger, which limits the improvement of production efficiency. Therefore, the electrostatic spinning technology has not been popularized in a large scale through the development of many years.
Disclosure of Invention
The invention provides a preparation device of a nano material, which can simplify the preparation process of the nano material and reduce the cost; the problems of low production efficiency, limited production scale and the like of the conventional fiber preparation are solved.
The invention provides a preparation device of a nano material, which comprises: a liquid supply system for supplying spinning solution, and a gas injection system for supplying stable high-pressure gas and injecting the continuously supplied spinning solution;
the liquid supply system comprises: a connector, a cartridge, a piston and a needle;
the gas injection system comprises: high-pressure gas generating equipment and an air nozzle;
one end of the needle head is connected with the material cylinder, and the other end of the needle head is provided with a liquid outlet;
the liquid outlet is positioned in a spherical space with the air nozzle of the air faucet as a sphere center.
The connector is connected with stable high-pressure gas to push the piston to extrude the spinning solution in the material cylinder from the liquid outlet;
and the air injection system blows stable high-pressure air to the spinning solution drops extruded from the liquid outlet through an air nozzle.
In the nano-material preparation device, the horizontal distance from the air nozzle of the air nozzle to the liquid outlet is 0-50 mm.
The nanomaterial fabrication apparatus of the present invention, the fabrication apparatus of claim 1, wherein a radius of the spherical space is 0 to 50 mm.
In the nano-material preparation device, the included angle between the air injection direction of the air nozzle and the liquid outlet direction of the liquid outlet is 0-90 degrees.
In the nanomaterial fabrication apparatus of the present invention, the connector includes: an air inlet and a buckle; and
and the lower surface of the connection is provided with sealing rubber.
In the nano-material preparation device, the cross section of the air tap is circular.
In the nanomaterial fabrication apparatus of the present invention, the cross section of the needle is circular.
In the nanomaterial fabrication apparatus of the present invention, the feed end of the charging barrel is eaves-shaped.
According to the nano material preparation device provided by the invention, stable high-pressure gas is connected to the connector, the piston is pushed to extrude the spinning solution in the material cylinder from the liquid outlet, and then the stable high-pressure gas is blown to the spinning solution droplets extruded from the liquid outlet through the air nozzle of the air injection system, so that the droplets are positioned in the middle of the air flow. When the surface tension of the liquid drop and the pulling force of the air flow reach the balance of two forces, continuous spinning trickle is formed, and then the nano fiber is formed. The scheme simplifies the preparation process of the nano material, reduces the production cost, and further solves the problems of low production efficiency, limited production scale and the like of the current fiber preparation.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a nanomaterial fabrication apparatus provided in an embodiment of the present invention;
FIG. 2 is a schematic view of a connector structure of a nanomaterial fabrication apparatus provided in an embodiment of the present invention;
fig. 3 is an SEM image of nanofibers manufactured by the nanomaterial manufacturing apparatus provided in the embodiment of the present invention.
Detailed Description
The embodiments of the present invention are described in detail, and the principles and embodiments of the present invention are explained in detail herein using specific examples, which are provided only to help understanding of the present invention. Meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention. The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a nanomaterial fabrication apparatus according to an embodiment of the present invention. As shown in fig. 1, the nanomaterial fabrication apparatus provided by the present invention comprises a liquid feeding system 10 and an air injection system 20; the fluid administration system 10 is comprised of a connector 101, a barrel 102, a piston 103, and a needle 104; the gas injection system 20 includes a gas nozzle 201 and a high-pressure gas generating apparatus 202.
Wherein, the feed end of the charging barrel 102 is in the shape of an eave, and the cross sections of the needle 104 and the air nozzle 201 are circular.
Further, referring to fig. 2, fig. 2 is a schematic structural diagram of a connector of a nanomaterial fabrication apparatus according to an embodiment of the present invention. Referring to fig. 1 and 2, the connector 101 is provided with a snap 1012, the snap 1012 can be snapped to the eaves-shaped feeding end of the barrel 102 to connect the connector 101 with the barrel 102, and the lower surface of the connector 101 is provided with a sealing rubber to enable the connector 101 to be connected with the barrel 102 without a gap.
Wherein, the liquid outlet of the needle 104 is located in a spherical space with the air nozzle of the air nozzle 201 as the center of the sphere.
Preferably, the radius of the spherical space with the air nozzle of the air nozzle 201 as the center of the sphere is 0-50 mm.
Preferably, the included angle α between the air injection direction of the air nozzle 201 and the liquid outlet direction of the liquid outlet of the needle 104 is 0-90 °.
Preferably, the horizontal distance from the air nozzle of the air nozzle 201 to the liquid outlet of the needle 104 is 0-50 mm.
Wherein, the connector 101 further comprises a gas inlet 1011 for receiving stable high-pressure gas, so that the piston 103 moves downwards to extrude the spinning solution in the barrel 102 from the liquid outlet of the needle 104.
In the specific implementation, the liquid feeding system 10 and the gas injection system 20 are both connected with stable high-pressure gas. The liquid feeding system 10 makes the piston 103 move downwards through high-pressure gas, so that the spinning solution in the barrel 102 is continuously extruded from the liquid outlet of the needle 104, and liquid drops with surface tension are formed at the liquid outlet of the needle 104; meanwhile, the gas injection system 20 continuously blows stable high-pressure gas to the liquid drops formed at the liquid outlet of the needle 104 through the gas nozzle 201, so that the liquid drops are in the middle of the gas flow. When the pull of the gas stream on the droplet is increased enough to overcome the surface tension of the droplet, the droplet is blown away. When the surface tension of the liquid drop and the pulling force of the air flow are in a state of 'two-force balance', a continuous spinning stream is formed, and the spinning stream is rapidly solidified due to strong volatilization or hydrolysis (different solidification mechanisms of different spinning stock solutions) in the process of moving forwards along with the air to form superfine fibers.
Preferably, the barrel 102 has a diameter of 5mm to 20 mm.
Preferably, the inner diameter of the air nozzle 201 is 0.5mm to 5 mm.
Preferably, the inside diameter of the needle 104 is 100 um-1 mm, and the outside diameter is 400 um-2 mm.
In particular implementations, the cartridge 102 includes, but is not limited to, a cylinder, which may be, for example, a cube, a cuboid, or the like.
In the specific implementation process, the liquid feeding system 10 controls the liquid feeding speed by controlling the air pressure (spinning hydraulic pressure) of the high-pressure gas connected to the connector 101.
Before spinning, a spinning dope having a certain viscosity needs to be prepared by a sol-gel method so that the spinning dope is easily solidified by strong volatilization or hydrolysis.
Specifically, the prepared spinning solution is slowly poured into the barrel 102, the piston 103 is plugged into the barrel 102, then the barrel 102 is inverted, the needle 104 is removed, the piston 103 is slowly pushed upwards to drive air out of the barrel 102, then the needle 104 is installed, and finally the connector 101 is connected with the barrel 102.
And because the inner diameter of the needle head is smaller, the spinning hydraulic pressure is different in order to ensure that the spinning solution can be smoothly supplied according to the inner diameter of the needle head and the viscosity of the spinning solution.
Preferably, the dope viscosity is 0.001 mPas to 109mPa·s。
Preferably, the liquid feeding speed is 0.5ml/h to 4 ml/h.
Specifically, the viscosity of the spinning dope essentially refers to the mechanical surface tension property of the concentration-viscosity relationship, and the spinning trickle state is maintained mainly by the two-force balance of the surface tension of the spinning dope and the pulling force of the air flow. When the concentration of the spinning solution is too low, the continuity of the spinning trickle is difficult to ensure, and the sprayed liquid drops are easy to form; when the concentration of the spinning dope is too high, the spinning resistance (surface tension) becomes too high to form a fine flow of the spun yarn, and the liquid outlet is easily stuck to make the diameter of the fiber formed by solidification large.
In the specific implementation process, when the concentration of the spinning dope is constant, the stable spinning trickle can be formed only when the feeding speed of the feeding system 10 and the air injection pressure of the air injection system 20 have proper matching. When the air injection pressure is larger and the liquid feeding speed is smaller, the continuity of the fine jet flow is poor, the continuity of the fiber is reduced, the length of the obtained fiber is reduced, and the too large air injection pressure can even lead the spinning solution to fly out in the form of liquid drops to generate particles; when the air injection pressure is low and the liquid feeding speed is high, the supplied spinning solution can not be blown away in time, and liquid drops are condensed and solidified at the needle head to block the needle head. The injection pressure of the injection system 20 is different depending on the liquid supply speed.
Preferably, the air injection pressure is from 1psi to 100 psi.
Preferably, the working environment humidity is not higher than 50% because the solidification process of the spinning solution from the spinning stream to the fiber is influenced by the environment humidity.
Preferably, the spinning solution may be a single polymer, and a metal alkoxide or a lipid compound may be added.
Referring to fig. 3, fig. 3 is an SEM image of a nano-fiber prepared by the nano-material preparation apparatus according to the embodiment of the present invention.
In the specific implementation process, the nano material preparation device provided by the embodiment of the invention has simple design and no mutual influence among a plurality of devices. Therefore, a plurality of the devices can be combined to form an array to meet the requirement of mass production of nanofibers.
According to the nano material preparation device provided by the invention, stable high-pressure gas is connected to the connector, the piston is pushed to extrude the spinning solution in the material cylinder from the liquid outlet, and then the stable high-pressure gas is blown to the spinning solution droplets extruded from the liquid outlet through the air nozzle of the air injection system, so that the droplets are positioned in the middle of the air flow. When the surface tension of the liquid drop and the pulling force of the air flow reach the balance of two forces, continuous spinning trickle is formed, and then the nano fiber is formed. The scheme simplifies the preparation process of the nano material, reduces the production cost, and further solves the problems of low production efficiency, limited production scale and the like of the current fiber preparation.
The embodiments of the present invention are described in detail, and the principles and embodiments of the present invention are explained in detail herein using specific examples, which are provided only to help understanding of the present invention. Meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. An apparatus for preparing a nanomaterial, comprising: a liquid supply system for supplying spinning solution, and a gas injection system for supplying stable high-pressure gas and injecting the continuously supplied spinning solution;
the liquid supply system comprises: a connector, a cartridge, a piston and a needle;
the gas injection system comprises: high-pressure gas generating equipment and an air nozzle;
one end of the needle head is connected with the material cylinder, and the other end of the needle head is provided with a liquid outlet;
the liquid outlet is positioned in a spherical space with the air nozzle of the air faucet as a sphere center;
the connector is connected with stable high-pressure gas, and the piston is pushed to extrude the spinning solution in the material cylinder from the liquid outlet so as to form liquid drops with surface tension at the liquid outlet;
the air injection system blows stable high-pressure air to spinning stock solution droplets extruded from the liquid outlet through an air nozzle to generate pulling force on the droplets, when the surface tension and the pulling force are in a two-force balance state, continuous spinning trickle is formed, and the spinning trickle is rapidly solidified due to strong volatilization or hydrolysis in the process of moving along with the high-pressure air to form nano fibers.
2. The preparation device as claimed in claim 1, wherein the horizontal distance from the gas nozzle of the gas nozzle to the liquid outlet is 0-50 mm.
3. The manufacturing apparatus as set forth in claim 1, wherein the spherical space has a radius of 0 to 50 mm.
4. The manufacturing apparatus as set forth in claim 1, wherein an angle between an air injection direction of said air nozzle and a liquid discharge direction of said liquid outlet is 0 to 90 °.
5. The manufacturing apparatus of claim 1, wherein the connector comprises: an air inlet and a buckle; and
the lower surface of the connector is provided with sealing rubber.
6. The manufacturing apparatus as set forth in claim 1, wherein said air cap is circular in cross section.
7. The manufacturing device of claim 1, wherein the needle has a circular cross-section.
8. The manufacturing apparatus of claim 1, wherein the feed end of the barrel is eave-shaped.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810254850.2A CN108396390B (en) | 2018-03-26 | 2018-03-26 | Preparation device of nano material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810254850.2A CN108396390B (en) | 2018-03-26 | 2018-03-26 | Preparation device of nano material |
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| CN108396390A CN108396390A (en) | 2018-08-14 |
| CN108396390B true CN108396390B (en) | 2020-04-10 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6651405B1 (en) * | 1999-10-30 | 2003-11-25 | Arzneimittel Gmbh Apotheker Vetter & Co. Ravensburg | Apparatus for mounting a tip cap on a syringe subassembly |
| CN102071542A (en) * | 2011-02-22 | 2011-05-25 | 天津工业大学 | Method for preparing polymeric nano-micro fiber non-woven fabric |
| CN204849135U (en) * | 2015-07-02 | 2015-12-09 | 南通百博丝纳米科技有限公司 | Preparation nanofiber's spouts a device and spinning equipment |
| CN205974756U (en) * | 2016-08-19 | 2017-02-22 | 西安工程大学 | Composite nanowire fibre preparation mechanism based on many bubble methods of air current |
| CN107142534A (en) * | 2017-05-25 | 2017-09-08 | 天津工业大学 | A kind of solution jet spinning equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8689985B2 (en) * | 2005-09-30 | 2014-04-08 | E I Du Pont De Nemours And Company | Filtration media for liquid filtration |
| CN105113028A (en) * | 2015-08-19 | 2015-12-02 | 广东工业大学 | Portable handheld spinning device |
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- 2018-03-26 CN CN201810254850.2A patent/CN108396390B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6651405B1 (en) * | 1999-10-30 | 2003-11-25 | Arzneimittel Gmbh Apotheker Vetter & Co. Ravensburg | Apparatus for mounting a tip cap on a syringe subassembly |
| CN102071542A (en) * | 2011-02-22 | 2011-05-25 | 天津工业大学 | Method for preparing polymeric nano-micro fiber non-woven fabric |
| CN204849135U (en) * | 2015-07-02 | 2015-12-09 | 南通百博丝纳米科技有限公司 | Preparation nanofiber's spouts a device and spinning equipment |
| CN205974756U (en) * | 2016-08-19 | 2017-02-22 | 西安工程大学 | Composite nanowire fibre preparation mechanism based on many bubble methods of air current |
| CN107142534A (en) * | 2017-05-25 | 2017-09-08 | 天津工业大学 | A kind of solution jet spinning equipment |
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