CN-122013330-A - Centrifugal blowing electrostatic spinning equipment for one-step rapid prototyping and use method thereof

CN122013330ACN 122013330 ACN122013330 ACN 122013330ACN-122013330-A

Abstract

The invention discloses centrifugal blowing electrostatic spinning equipment for one-step rapid prototyping and a use method thereof, which relate to the technical field of nanofiber preparation equipment and comprise a frame, a centrifugal electrostatic spinning module, an air flow auxiliary module, an instantaneous heat treatment module and a fiber collection module, the fiber collecting module is arranged at the lower part of the instantaneous heat treatment module, the instantaneous heat treatment module is arranged at the lower part of the centrifugal electrostatic spinning module, the centrifugal electrostatic spinning module is connected with the airflow auxiliary module, and the airflow auxiliary module and the centrifugal electrostatic spinning module are both connected with the frame. The invention adopts the one-step rapid prototyping centrifugal blowing electrostatic spinning equipment and the application method thereof to realize the full-flow integrated continuous operation from fiber prototyping to structure shaping, and the prepared nanofiber has the characteristics of uniform structure, excellent mechanical property, strong thermal stability and high orientation, and is suitable for large-scale preparation in the fields of wide-temperature-range heat insulation and cold insulation materials, high-performance battery diaphragms, filter materials, biological tissue engineering brackets and the like.

Inventors

CHEN ZHOU
ZOU ZHIPENG
Cao Shengda
SHEN YIMING
LING XIANG

Assignees

南京工业大学

Dates

Publication Date: 20260512
Application Date: 20260402

Claims (10)

1. The centrifugal blowing electrostatic spinning equipment is characterized by comprising a frame, a centrifugal electrostatic spinning module, an airflow auxiliary module, an instantaneous heat treatment module and a fiber collection module, wherein the fiber collection module is arranged at the lower part of the instantaneous heat treatment module, the instantaneous heat treatment module is arranged at the lower part of the centrifugal electrostatic spinning module, the centrifugal electrostatic spinning module is connected with the airflow auxiliary module, and the airflow auxiliary module and the centrifugal electrostatic spinning module are both connected with the frame.
2. The one-step rapid prototyping centrifugal blowing electrostatic spinning device of claim 1, wherein the centrifugal electrostatic spinning module comprises a centrifugal turntable, a main shaft of the centrifugal turntable is connected with the carbon brush, the main shaft is connected with a driving motor, a plurality of filament throwing openings are formed in the side wall of the centrifugal turntable, the filament throwing openings are axially distributed along the side wall of the centrifugal turntable, a feeding opening is formed in the upper portion of the centrifugal turntable, and the feeding opening penetrates through the frame.
3. The centrifugal blowing electrostatic spinning device for one-step rapid prototyping is characterized in that the airflow auxiliary module comprises a pressure stabilizing cavity, the pressure stabilizing cavity is of an annular structure, the pressure stabilizing cavity is symmetrically arranged relative to the main shaft, the lower part of the pressure stabilizing cavity is connected with a gas unit through a damping pipeline, the upper part of the pressure stabilizing cavity is connected with an air inlet pipeline, and a plurality of air inlet pipelines are arranged.
4. The centrifugal-blowing electrostatic spinning device for one-step rapid prototyping is characterized in that an air curtain is arranged on the outer side wall, close to the centrifugal turntable, of the pressure stabilizing cavity, the air curtain is arranged along the circumference of the pressure stabilizing cavity, and the inner dip angle of the air curtain is 0-60 degrees.
5. The one-step rapid prototyping centrifugal injection electrostatic spinning device of claim 1 wherein the instantaneous heat treatment module comprises a combustion chamber, wherein the end part of the combustion chamber, a natural gas inlet and a combustion-supporting gas inlet are arranged on the side wall of the combustion chamber, a combustion chamber spark plug is arranged on the side wall of the combustion chamber, a combustion chamber gas outlet is arranged at the tail end of the combustion chamber, and the combustion chamber is of a hollow structure with three annular holes on the periphery.
6. The one-step rapid prototyping centrifugal blowing electrostatic spinning device of claim 5 wherein the annular ring of the combustion chamber has a width of 3-15 mm.
7. The one-step rapid prototyping centrifugal blowing electrostatic spinning device of claim 2, wherein the rotating speed of the centrifugal turntable is 1000-12000 rpm, the diameter of the centrifugal turntable is 50-500mm, the number of the filament throwing openings on the side wall is 2-10, the width of the filament throwing openings is 0.2-5 mm, and the number of the filament throwing openings is 5-5000.
8. The centrifugal blowing electrostatic spinning apparatus of claim 1, wherein the fiber collecting module is a conveyor belt.
9. Use of a centrifugal blowing electrostatic spinning device for one-step rapid prototyping according to any of the preceding claims 1-8, characterized in that it comprises the following steps: step one, preparing spinning solution, namely adding the spinning solution into a feeding port of a centrifugal turntable, and maintaining a certain temperature; Setting a target environment temperature, a centrifugal rotating speed, a working voltage and an airflow parameter, and collecting a motion parameter and a heat treatment parameter of the airflow parameter; starting a driving motor, a centrifugal turntable and a high-voltage electrostatic generator, and stretching and accelerating spinning solution from a spinning opening to form a fine jet; Step four, air is introduced from the air flow auxiliary module, the air enters the pressure stabilizing cavity after being subjected to flow equalization through the damping pipeline, and finally, a conical air flow curtain is formed from the center of the annular micropore; Step five, the piled fiber web moves along with a conveyor belt to enter an instantaneous heat treatment module, high-temperature flame is sprayed out from an air outlet of a combustion chamber, and instantaneous heat treatment is carried out on the fiber web; and step six, stripping and collecting the fiber film subjected to heat treatment from the mesh belt.
10. The method of claim 9, wherein the instantaneous heat treatment temperature in the fourth step is 200-1200 ℃ and the treatment time is 0.1-5 seconds.

Description

Centrifugal blowing electrostatic spinning equipment for one-step rapid prototyping and use method thereof Technical Field The invention relates to the technical field of nanofiber preparation equipment, in particular to one-step rapid prototyping centrifugal blowing electrostatic spinning equipment and a use method thereof. Background The electrostatic spinning technology is one of the mainstream methods for preparing nanofibers at present, and is widely applied to the fields of energy sources, biology, filtration, composite materials and the like. The existing equipment often lacks an online heat treatment system, so that secondary processing is required after the fiber is formed, and the structural integrity and performance consistency are affected. Some devices have attempted to combine centrifugal force with electrostatic field to improve fiber drawing efficiency and yield, but the following problems still remain: The fiber collecting device is lack of an airflow auxiliary system, poor in fiber collecting uniformity, loose in fiber structure and reduced in performance due to separation of spinning and heat treatment links, low in equipment integration level, complex in operation and difficult to realize continuous production. Disclosure of Invention The invention aims to provide one-step rapid prototyping centrifugal blowing electrostatic spinning equipment and a use method thereof, which realize efficient, continuous and controllable preparation of nanofibers. In order to achieve the above purpose, the invention provides one-step rapid prototyping centrifugal injection electrostatic spinning equipment, which comprises a frame, a centrifugal electrostatic spinning module, an airflow auxiliary module, an instantaneous heat treatment module and a fiber collection module, wherein the fiber collection module is arranged at the lower part of the instantaneous heat treatment module, the instantaneous heat treatment module is arranged at the lower part of the centrifugal electrostatic spinning module, the centrifugal electrostatic spinning module is connected with the airflow auxiliary module, and the airflow auxiliary module and the centrifugal electrostatic spinning module are both connected with the frame. Preferably, the centrifugal electrostatic spinning module comprises a centrifugal turntable, a main shaft of the centrifugal turntable is connected with the carbon brush, the main shaft is connected with the driving motor, a yarn throwing port is formed in the side wall of the centrifugal turntable, a plurality of yarn throwing ports are formed in the side wall of the centrifugal turntable and are axially distributed along the side wall of the centrifugal turntable, a feeding port is formed in the upper portion of the centrifugal turntable, and the feeding port penetrates through the frame. Preferably, the airflow auxiliary module comprises a pressure stabilizing cavity, the pressure stabilizing cavity is arranged to be of an annular structure, the pressure stabilizing cavity is symmetrically arranged relative to the main shaft, the lower portion of the pressure stabilizing cavity is connected with the gas unit through a damping pipeline, the upper portion of the pressure stabilizing cavity is connected with an air inlet pipeline, and a plurality of air inlet pipelines are arranged. Preferably, an air curtain is arranged on the outer side wall of the pressure stabilizing cavity, which is close to the centrifugal turntable, the air curtain is arranged along the circumference of the pressure stabilizing cavity, and the inner inclination angle of the air curtain is set to be 0-60 degrees. Preferably, the instantaneous heat treatment module comprises a combustion chamber, wherein the end part of the combustion chamber, a natural gas inlet and a combustion-supporting gas inlet are formed in the end part of the combustion chamber, a combustion chamber spark plug is arranged on the side wall of the combustion chamber, a combustion chamber gas outlet is formed in the tail end of the combustion chamber, and the combustion chamber is of a hollow structure with three annular holes on the periphery. Preferably, the annular width of the combustion chamber is 3-15 mm. Preferably, the rotating speed of the centrifugal turntable is 1000-12000 rpm, the diameter of the centrifugal turntable is 50-500mm, the number of layers of the filament throwing openings on the side wall is 2-10, the width of the filament throwing openings is 0.2-5 mm, and the number of the filament throwing openings is 5-5000. Preferably, the fiber collecting module is a conveyor belt. The application method of the centrifugal blowing electrostatic spinning equipment for one-step rapid prototyping comprises the following steps: step one, preparing spinning solution, namely adding the spinning solution into a feeding port of a centrifugal turntable, and maintaining a certain temperature; Setting a target environment temperature, a centrifugal rotating