CN110699763A - Electrostatic spinning method for improving uniformity of spinning solution - Google Patents
Electrostatic spinning method for improving uniformity of spinning solution Download PDFInfo
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- CN110699763A CN110699763A CN201911009157.XA CN201911009157A CN110699763A CN 110699763 A CN110699763 A CN 110699763A CN 201911009157 A CN201911009157 A CN 201911009157A CN 110699763 A CN110699763 A CN 110699763A
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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
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
-
- 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
- D01D1/065—Addition and mixing of substances to the spinning solution or to the melt; Homogenising
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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
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
-
- 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
- D01D5/0092—Electro-spinning characterised by the electro-spinning apparatus characterised by the electrical field, e.g. combined with a magnetic fields, using biased or alternating fields
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/50—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyalcohols, polyacetals or polyketals
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/54—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polymers of unsaturated nitriles
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/94—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
Abstract
The application relates to an electrostatic spinning method for improving the uniformity of a spinning solution, which comprises the following steps: providing an electrostatic spinning device; preparing a spinning solution, placing the spinning solution in a liquid storage mechanism of an electrostatic spinning device, wherein a stirring mechanism is arranged in the liquid storage mechanism, a propelling mechanism matched with the liquid storage mechanism in a sliding mode is pushed, the propelling mechanism rotates, and the propelling mechanism moves and rotates to drive the stirring mechanism to compress and rotate so as to stir the spinning solution; the spinning solution is uniformly dispersed and not easy to agglomerate under the stirring of the stirring mechanism, flows out from the spinneret under the extrusion of the propelling mechanism, the high-voltage electrostatic generator of the electrostatic spinning device is opened to generate electrostatic field force, and the spinning solution is stretched into filaments under the action of the electrostatic field force. The method provided by the invention has the advantages that the stirring mechanism is arranged, so that the solution can be stirred and spun, the uniform dispersion of substances in the solution is ensured, and the layering phenomenon is avoided.
Description
Technical Field
The invention relates to an electrostatic spinning method for improving the uniformity of a spinning solution, and belongs to the technical field of electrostatic spinning.
Background
The electrostatic spinning technology is one of the most direct and basic methods for preparing superfine fibers and nano fibers at present, and the nano fibers prepared by the electrostatic spinning technology have the characteristics of ultrahigh specific surface area, extremely high length-diameter ratio, high surface activity, superior mechanical properties (high strength and high toughness) and the like, so that the electrostatic spinning technology has very wide application prospects in different fields of textile engineering, environmental engineering, biotechnology, medical treatment, health and hygiene, energy storage, military, anti-terrorism safety and the like. However, the properties of the solutions used for spinning vary from product to product. Some materials are sometimes added into a solution to try to modify the product, but due to the physicochemical properties of the materials, the materials cannot be completely dissolved in the solution, but are dispersed in the solution, and substances such as MnO2, Carbon Nano Tubes (CNT), graphene and some MOF synthesized particles cannot be well dispersed uniformly in the solution, especially in the spinning process, the solution is kept still in a liquid storage tube, so that the materials sink in the solution due to the self gravity, the solution is obviously layered, and the property distribution of the final product is not uniform. Meanwhile, some solutions are too high in viscosity, and the solution is easy to block a needle head in standing spinning, so that normal spinning is hindered.
Disclosure of Invention
The invention aims to provide an electrostatic spinning method for improving the uniformity of a spinning solution, wherein a stirring mechanism is arranged in a liquid storage mechanism, the stirring mechanism is connected with a propelling mechanism, and the propelling mechanism moves to drive the stirring mechanism to rotate so as to ceaselessly stir the spinning solution, so that a solute is uniformly dispersed in the solution, and the agglomeration phenomenon cannot be generated.
In order to achieve the purpose, the invention provides the following technical scheme: an electrospinning method for increasing the uniformity of a spinning solution, the method comprising:
providing an electrostatic spinning device;
preparing a spinning solution, placing the spinning solution in a liquid storage mechanism of the electrostatic spinning device, wherein a stirring mechanism is arranged in the liquid storage mechanism, a propelling mechanism in sliding fit with the liquid storage mechanism is pushed, the propelling mechanism is made to rotate, and the propelling mechanism moves and rotates to drive the stirring mechanism to compress and rotate so as to stir the spinning solution;
the spinning solution is uniformly dispersed and not easy to agglomerate under the stirring of the stirring mechanism, flows out of the spinning nozzle under the extrusion of the propelling mechanism, the high-voltage electrostatic generator of the electrostatic spinning device is opened to generate electrostatic field force, and the spinning solution is stretched into filaments under the action of the electrostatic field force.
Further, the stirring mechanism is a spiral scroll spring, and the method further comprises:
the spiral vortex type spring rotates and gradually seals, stacks and nests to form a ring under the pushing of the propelling mechanism; when the propelling mechanism is positioned at the other end of the liquid storage mechanism, the spiral vortex type spring is stacked to be in a mosquito-repellent incense shape.
Further, the electrostatic spinning device comprises a driving mechanism for driving the propelling mechanism to move and rotate, and the method further comprises the following steps:
the rotating speed of the driving mechanism is 50-800rpm, and the propelling speed of the driving mechanism is 0.2-2 ml/h.
Further, the method further comprises:
the power supply voltage of the high-voltage electrostatic generator is 15-30 kv.
Further, the method further comprises:
the spinning temperature is 20-25 ℃, and the spinning humidity is 50-55%.
The invention has the beneficial effects that: the stirring mechanism is arranged in the liquid storage mechanism and connected with the propelling mechanism, the propelling mechanism moves to drive the stirring mechanism to rotate so as to continuously stir the spinning solution, so that the solute is uniformly dispersed in the solution and cannot be agglomerated, and the solution with higher viscosity can smoothly flow out of the spinning nozzle due to the vortex generated by the stirring mechanism in the stirring process, so that the normal spinning is ensured;
set stirring mechanism into spiral vortex type spring, spiral vortex type spring when having good elasticity performance, contracts gradually with the layering nestification cyclization under advancing mechanism's promotion, is totally the mosquito-repellent incense form at last and piles together, does not occupy stock solution mechanism's stock solution space to can not cause the waste to solution.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic view of an electrospinning apparatus to which the method of the present invention is applied.
FIG. 2 is a flow chart of the electrospinning method with high spinning solution uniformity of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1, the electrostatic spinning apparatus using the method of the present invention includes a liquid storage mechanism 7 for storing a spinning solution, at least one spinning nozzle disposed at one side of the liquid storage mechanism 7, a propulsion mechanism 2 sliding-fitted with the liquid storage mechanism 7 to push the spinning solution for spinning, a driving mechanism 1 for driving the propulsion mechanism 2 to move, a high voltage electrostatic generator 5 connected to the spinning nozzle, and a stirring mechanism 6 connected to the propulsion mechanism 2, wherein the driving mechanism 1 drives the propulsion mechanism 2 to move and rotate relative to the liquid storage mechanism 7, and the piston rotates to drive the stirring mechanism 6 to rotate, so that the stirring mechanism 6 stirs the spinning solution to uniformly disperse the spinning solution. In this embodiment, the liquid storage mechanism 7 is a needle tube, the propelling mechanism 2 is a piston slidably engaged with the needle tube, and the driving mechanism 1 is a servo motor. Indeed, in other embodiments, the liquid storage mechanism 7, the propelling mechanism 2 and the servo motor may be other, and are not limited herein according to the actual situation.
The electrostatic spinning device further comprises a receiving mechanism 4 connected with the high-voltage electrostatic generator 5, the receiving mechanism 4 is arranged on one side of the spinneret and is provided with a grounding electrode 3, and the receiving mechanism 4 is in a drum type or net type shape and the like. More specifically, the receiving mechanism 4 is arranged opposite to the spinneret to better receive the nanofibers. In the present embodiment, the receiving means 4 is in the shape of a roller, so that the produced nanofibers are uniformly received on the roller-shaped receiving means 4. Indeed, in other embodiments, the receiving mechanism 4 may have other shapes, and is not limited in particular.
The stirring mechanism 6 is a spiral vortex type spring, the diameter of the spiral vortex type spring is gradually reduced or gradually increased, so that the spiral vortex type spring is stacked in layers and nested into a ring under the pushing of the propelling mechanism 2, and the purpose of the arrangement is that: spiral vortex type spring when having good elasticity performance, contracts gradually and piles up the nestification ring with the layering under advancing mechanism 2's promotion, is the mosquito-repellent incense form at last and piles up together completely, does not occupy stock solution mechanism 7's stock solution space to can not cause the waste to solution. The length of the spiral vortex type spring is smaller than or equal to that of the liquid storage mechanism 7, so that the spinning solution can be stirred in the liquid storage mechanism 7 better. The stirring mechanism 6 is made of special inert metal or high polymer which does not react with the spinning solution, so that the quality of the finally prepared nano composite fiber membrane is ensured.
The implementation process of the invention is as follows: the spinning solution is prepared, the spinning solution is placed in the liquid storage mechanism 7, the driving mechanism 1 is started, the rotating speed of the driving mechanism 1 is adjusted, the driving mechanism 1 drives the propelling mechanism 2 to advance and rotate, and the stirring mechanism 6 rotates and is compressed along with the advancing and rotating of the propelling mechanism 2 so as to ceaselessly stir the spinning solution and prevent the spinning solution from being agglomerated in the liquid storage mechanism 7. And simultaneously, the high-voltage electrostatic generator 5 is started, an electrostatic field is generated between the liquid storage mechanism 7 and the receiving mechanism 4, the spinning solution is pushed to be sprayed from the spinning nozzle and is stretched into filaments under the action of the electrostatic field force, so that a Taylor cone is formed and is finally received on the receiving mechanism 4.
Referring to fig. 2, the electrostatic spinning method for improving the uniformity of the spinning solution of the present invention comprises:
providing an electrostatic spinning device;
preparing a spinning solution, placing the spinning solution in a liquid storage mechanism 7 of the electrostatic spinning device, wherein a stirring mechanism 6 is arranged in the liquid storage mechanism 7, pushing a propelling mechanism 2 which is in sliding fit with the liquid storage mechanism 7 and enabling the propelling mechanism 2 to rotate, and moving and rotating the propelling mechanism 2 to drive the stirring mechanism 6 to compress and rotate so as to stir the spinning solution;
the spinning solution is uniformly dispersed and not easy to agglomerate under the stirring of the stirring mechanism 6, flows out from the spinning nozzle under the extrusion of the propelling mechanism 2, the high-voltage electrostatic generator 5 of the electrostatic spinning device is opened to generate electrostatic field force, and the spinning solution is stretched into filaments under the action of the electrostatic field force. The propulsion mechanism 2 moves from one end of the liquid storage mechanism 7 to the other end, and the spiral vortex-type spring 6 rotates and gradually seals layers, stacks and nests into a ring under the pushing of the propulsion mechanism 2; when the propulsion mechanism 2 is positioned at the other end of the liquid storage mechanism 7, the spiral scroll type spring 6 is stacked to be in a mosquito-repellent incense shape.
Specifically, the rotating speed of the driving mechanism 1 is 50-800rpm, and the propelling speed of the driving mechanism 1 is 0.2-2 ml/h; the power supply voltage of the high-voltage electrostatic generator 5 is 15-30 kv; the spinning temperature is 20-25 ℃, and the spinning humidity is 50-55%. Indeed, in other embodiments, the advancing speed and the rotating speed of the driving mechanism 1, the power supply voltage and the spinning temperature of the high-voltage electrostatic generator 5, and the spinning humidity may be other, and are not limited herein.
Three examples are specifically described below.
The first embodiment is as follows:
the spinning solution in this example is a graphene solution that is easily agglomerated in a solution. Firstly, preparing a 12% (m/v) PAN solution, then weighing 0.5766g of graphene, adding the graphene into the stirred PAN solution, continuously stirring for 6h conventionally, so that the graphene can be primarily dispersed in the PAN solution, and performing ultrasonic treatment in an ultrasonic instrument for 1h after stirring is completed, so that the graphene can be better dispersed. Then the solution is injected into the liquid storage mechanism 7, and the spiral vortex type stirring mechanism 6 and the propelling mechanism 2 are arranged at one end of the liquid storage mechanism 7. Then, the driving mechanism 1 is turned on, the rotation speed is adjusted to 200rpm, and the advancing speed is adjusted to 1mL/h, so that the advancing mechanism 2 and the stirring mechanism 6 can be stably advanced and rotated. And then the solution flows out from a spinning head at the tail end of the liquid storage mechanism 7, the high-voltage electrostatic generator 5 is opened at the moment, the voltage is adjusted to be 18KV, the jet flow is stretched into filaments under the strong action of the electrostatic field of the high-voltage electrostatic generator 5, a Taylor cone is formed and received by the receiving mechanism 4, and finally the nano composite fiber membrane with uniformly dispersed graphene is formed.
Example two:
the spinning solution in this example is a non-dispersible Carbon Nanotube (CNT) solution. Firstly preparing polyaniline solution, weighing 0.1g of polyaniline solution, dissolving the polyaniline solution in 10ml of chloroform, adding 0.129g of camphorsulfonic acid, stirring for 12 hours at room temperature by using a magnetic stirrer, and then filtering by using a filter membrane. Then 0.1g of CNT is added, and ultrasonic treatment is carried out for 2h to carry out primary dispersion on the CNT. Then electrostatic spinning can be carried out. Firstly, the solution is injected into the liquid storage mechanism 7, and at the moment, the spiral vortex type stirring mechanism 6 and the propelling mechanism 2 are positioned at one end of the liquid storage mechanism 7. Then, the driving mechanism 1 is turned on, the rotating speed is adjusted to be 100rpm, and the advancing speed is adjusted to be 0.8mL/h, so that the advancing mechanism 2 and the stirring mechanism 6 can be stably advanced and rotated. And then the solution flows out of a spinneret of the liquid storage mechanism 7, the high-voltage electrostatic generator 5 is started at the moment, the voltage is adjusted to be 20KV, the jet flow is stretched into filaments under the strong action of the electrostatic field of the high-voltage electrostatic generator 5, Taylor cones are formed and received by the receiving mechanism 4, and finally the polyaniline carbon nanotube composite fiber membrane with uniformly dispersed CNT is formed.
Example three:
the spinning solution in this example is a chitosan/PVA solution with a higher viscosity. Firstly, a chitosan/PVA solution is prepared, the concentration of the chitosan/PVA solution is 8%, the concentration of acetic acid is 2%, the mass ratio of chitosan to PVA is 1:1, the surface tension of the final solution is 57.06mN/m, the viscosity of the solution is 20Pa.s, the viscosity is very high, continuous spinning can not be normally carried out in the traditional electrostatic spinning device, and the needle head of the spinning device can be blocked. After the improved device is adopted, firstly, the solution is injected into the liquid storage mechanism 7, and at the moment, the spiral vortex type stirring mechanism 6 and the propelling mechanism 2 are positioned at the tail end of the liquid storage mechanism 7. Then, the driving mechanism 1 is turned on, the rotating speed is adjusted to be 500rpm, and the advancing speed is adjusted to be 0.5mL/h, so that the advancing mechanism 2 and the stirring mechanism 6 can be stably advanced and rotated. And then the solution flows out of a spinneret of the liquid storage mechanism 7, the high-voltage electrostatic generator 5 is started at the moment, the voltage is adjusted to be 25KV, the jet flow is stretched into filaments under the strong action of the electrostatic field of the high-voltage electrostatic generator 5, Taylor cones are formed and received by the receiving mechanism 4, and finally the chitosan/PVA nanofiber membrane is formed.
In summary, the following steps: the stirring mechanism 6 is arranged in the liquid storage mechanism 7, the stirring mechanism 6 is connected with the propelling mechanism 2, the propelling mechanism 2 moves to drive the stirring mechanism 6 to rotate so as to continuously stir the spinning solution, so that the solute is uniformly dispersed in the solution, the agglomeration phenomenon cannot be generated, and the solution with higher viscosity can smoothly flow out of a spinning nozzle by the vortex generated by the stirring mechanism 6 during stirring, so that the normal running of spinning is ensured;
set stirring mechanism 6 into spiral vortex type spring, spiral vortex type spring when having good elasticity performance, shrink gradually with the layering nestification cyclization under advancing mechanism 2's promotion, at last be mosquito-repellent incense form pile together completely, do not occupy stock solution mechanism 7's stock solution space to can not cause the waste to solution.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. An electrospinning method for improving uniformity of a spinning solution, the method comprising:
providing an electrostatic spinning device;
preparing a spinning solution, placing the spinning solution in a liquid storage mechanism of the electrostatic spinning device, wherein a stirring mechanism is arranged in the liquid storage mechanism, a propelling mechanism in sliding fit with the liquid storage mechanism is pushed, the propelling mechanism is made to rotate, and the propelling mechanism moves and rotates to drive the stirring mechanism to compress and rotate so as to stir the spinning solution;
the spinning solution is uniformly dispersed and not easy to agglomerate under the stirring of the stirring mechanism, flows out of the spinning nozzle under the extrusion of the propelling mechanism, the high-voltage electrostatic generator of the electrostatic spinning device is opened to generate electrostatic field force, and the spinning solution is stretched into filaments under the action of the electrostatic field force.
2. The electrospinning method of claim 1, wherein the stirring mechanism is a helical vortex spring, the method further comprising:
the spiral vortex type spring rotates and gradually seals, stacks and nests to form a ring under the pushing of the propelling mechanism; when the propelling mechanism is positioned at the other end of the liquid storage mechanism, the spiral vortex type spring is stacked to be in a mosquito-repellent incense shape.
3. The electrospinning method of claim 1, wherein the electrospinning apparatus comprises a driving mechanism for driving the propelling mechanism to move and rotate, the method further comprising:
the rotating speed of the driving mechanism is 50-800rpm, and the propelling speed of the driving mechanism is 0.2-2 ml/h.
4. The electrospinning method of improving the uniformity of a spinning solution of claim 1, further comprising:
the power supply voltage of the high-voltage electrostatic generator is 15-30 kv.
5. The electrospinning method of improving the uniformity of a spinning solution of claim 1, further comprising:
the spinning temperature is 20-25 ℃, and the spinning humidity is 50-55%.
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