An electrode-assisted disc-type porous electrospinning nozzle assembly

Abstract

The invention relates to an electrode-assisted disc-type porous electrostatic spinning nozzle component. The electrode-assisted disc-type porous electrostatic spinning nozzle component comprises a disc-type porous spinning nozzle. The disc-type porous spinning nozzle comprises a disc-shaped spinneret plate, a columnar flow channel and a protruded auxiliary electrode. The disc-shaped spinneret plate mainly comprises a hollow circular truncated cone and a hollow cylinder which are coaxial to each other. The protruded auxiliary electrode mainly comprises a cylindrical electrode and a plurality ofconical electrodes. The cylinder and the cylindrical electrode share an axis. The orthographic projections of all the conical electrodes are located in the orthographic projection of the cylindricalelectrode. A plurality of through holes identical in shape and size are formed in the disc-shaped spinneret plate. The conical electrodes are identical in shape and size. The number of the through holes is the same as that of the conical electrodes. Included angles between the extension directions of all the through holes and the central axis of the cylinder are theta 1. Included angles between the central axes of all the conical electrodes and the central axis of the cylinder are theta 2. The auxiliary electrode on the electrostatic spinning nozzle component can be applicable to enhancement of electric fields of multiple jet flows, which is beneficial to refinement of nanofibers.

Description

Technical field [0001] The invention belongs to the technical field of electrostatic spinning devices, and relates to an electrode-assisted dish-type porous electrostatic spinning nozzle assembly. Background technique [0002] Electrospinning has become one of the main ways to prepare nanofibers due to its controllable process, simple equipment, wide range of suitable spinning, and low cost. Its principle is that the polymer solution or melt is in a high-voltage electrostatic field. When the charge repulsion on the surface of the droplet exceeds its surface tension, small polymer jets will be ejected on the surface of the droplet at a high speed, and these jets will be formed at the end of the nozzle. After a short distance, it undergoes high-speed stretching, solvent volatilization and solidification by electric field force, and finally deposits on the receiving substrate to form polymer fibers. Electrospinning technology is divided into needle type and needleless type. The out...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the auxiliary electrode on the electrospinning device in the prior art cannot be applied to the electric field enhancement of multiple jets at the same time, and to provide an electrode-assisted disc-type porous electrospinning nozzle assembly

Images