Unlock instant, AI-driven research and patent intelligence for your innovation.

Spiral electrostatic spinning nozzle with controllable spinning solution curvature and use method of spiral electrostatic spinning nozzle

A technology of electrospinning and spinning solution, which is used in filament/thread forming, textile and papermaking, fiber processing, etc. The problems such as large free liquid level of liquid can reduce solvent volatilization and the technology is simple and easy to implement.

Active Publication Date: 2019-06-14
DONGHUA UNIV +1
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a spiral electrospinning nozzle with controllable curvature of the spinning solution, equipment installed with such a nozzle, and a method of use, so as to solve the problem that the surface of the spiral immersion type nozzle does not have the shape of the spinning solution. Constraints, the jet movement path is unstable during the spinning process, the free liquid surface of the spinning solution is too large, and the solvent of the spinning solution is volatile. At the same time, the precise design of the electric field and the curvature of the spinning solution during the electrospinning process is realized. Controlled to achieve mass production of narrowly distributed submicron fibers and nanofibers

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Spiral electrostatic spinning nozzle with controllable spinning solution curvature and use method of spiral electrostatic spinning nozzle
  • Spiral electrostatic spinning nozzle with controllable spinning solution curvature and use method of spiral electrostatic spinning nozzle
  • Spiral electrostatic spinning nozzle with controllable spinning solution curvature and use method of spiral electrostatic spinning nozzle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Next, nanofibers are prepared by using a polymer solution prepared from polyacrylonitrile (PAN) and N-N dimethylformamide (DMF). The mass fraction of the prepared PAN polymer solution is 10%. The metal cylinder 5 is grounded 7, and the distance between the metal cylinder 5 and the helical electrospinning nozzle with controllable curvature of the spinning solution is adjusted to be 20cm; the drive motor 4 of the metal cylinder 5 of the receiving device is turned on, and the cylinder speed is set to 60r / min; set the rotation speed of the spiral electrospinning nozzle with controllable curvature of the spinning solution to 10r / min; turn on the switch of the high voltage generator 1, and slowly increase the voltage to 50KV; The liquid surface 11 is generated; the jet 3 flies to the metal drum 5 under the action of a high-voltage electrostatic field, the solvent volatilizes, and the jet 3 is stretched and solidified and deposited on the metal drum 5 to form a large number o...

Embodiment 2

[0044] This embodiment is similar to Example 1, except that: the mass fraction of the prepared PAN polymer solution is 12%; the distance between the metal cylindrical drum 5 and the spiral electrospinning nozzle with controllable curvature of the spinning solution is 18 cm; The rotation speed of the metal cylindrical drum 5 is 80r / min; the rotation speed of the helical electrospinning nozzle with controllable curvature of the spinning solution is 12r / min; the voltage of the high voltage generator 1 is 55KV.

Embodiment 3

[0046] This embodiment is similar to Embodiment 1, except that: the mass fraction of the prepared PAN polymer solution is 14%; the distance between the metal cylindrical drum 5 and the spiral electrospinning nozzle with controllable curvature of the spinning solution is 22 cm; The rotation speed of the metal cylindrical drum 5 is 80r / min; the rotation speed of the helical electrospinning nozzle with controllable curvature of the spinning solution is 15r / min; the voltage of the high voltage generator 1 is 55KV.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Pitchaaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a spiral electrostatic spinning nozzle with a controllable spinning solution curvature and a use method of the spiral electrostatic spinning nozzle. The spiral electrostatic spinning nozzle with the controllable spinning solution curvature comprises a spiral spinning cutter bit and a spiral groove sleeve arranged on the cutter bit; the spiral spinning cutter bit is composed of a spiral body of which the profile is a spiral line and the cross section is in a triangular shape and a cylindrical center shaft; the spiral groove sleeve is composed of a ring of which the profile is a spiral line of the spiral spinning cutter bit and the cross section is in an unclosed isosceles trapezoid without an upper base and a cylindrical center shaft, and the spiral groove sleeve and the spiral spinning cutter bit are concentrically arranged. The spiral electrostatic spinning nozzle with the controllable spinning solution curvature and the use method of the spiral electrostaticspinning nozzle have the advantages that the spiral groove sleeve made from polytetrafluoroethylene can make the spinning solution curvature of the surface of the spiral spinning cutter bit not fluctuate significantly and also does not interfere with a spinning nozzle electric field; on the basis of not interfering with electric field regulation, a free solution surface of a spinning solution canbe stabilized, the spinning solution curvature is regulated, solvent volatilization is reduced, and the batch preparation of narrow-range submicron fibers and nano fibers is achieved.

Description

technical field [0001] The invention belongs to the technical field of nanofibers and textile machinery, and in particular relates to a helical electrostatic spinning nozzle with controllable curvature of spinning liquid and a use method thereof. Background technique [0002] When polymer fiber diameters are reduced from the micrometer scale to the submicrometer or nanometer scale, a surprising set of properties emerges. Such as a very large volume specific surface area, the volume specific surface area of ​​nanofibers is basically 1000 times that of microfibers; it can be flexibly functionalized on the surface; it shows superior effects and mechanical properties compared with other known material forms, such as surface And interface effect, small size effect, quantum size effect and quantum tunneling effect and stiffness, tensile strength, etc. These outstanding properties make nanofibers the material of choice for many important applications, and have great development po...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): D01D5/00
Inventor 覃小红熊健丁进平王荣武
Owner DONGHUA UNIV