Centrifugal static spinning nozzle

Abstract

The invention discloses a centrifugal static spinning nozzle which comprises a liquid incoming pipe, a transitional liquid storing container and a rotating nozzle. The liquid incoming pipe is connected with the transitional liquid storing container, the rotating nozzle is positioned at the bottom of the transitional liquid storing container, a liquid outlet is formed in the bottom of the transitional liquid storing container, and the liquid outlet and the rotating nozzle are in coaxial arrangement. By arranging the transitional liquid storing container, the objective of buffering a solution can be achieved, so that the solution is ensured to be continuously and stably supplied to the rotating nozzle; importantly, by coaxially arranging the liquid outlet of the transitional liquid storing container and the rotating nozzle, the solution entering the rotating nozzle can be ensured to be always concentric with the rotating nozzle, so that spinning quality of the centrifugal static spinningnozzle is improved.

Description

technical field [0001] The invention relates to the technical field of centrifugal electrostatic spinning, in particular to a centrifugal electrostatic spinning nozzle. Background technique [0002] Centrifugal electrospinning is a method in which polymer melt or solution is thrown out from pores to form fibers by means of centrifugal force and shear force generated by a high-speed rotating device. [0003] Due to the need for high-speed rotation in the existing electrospinning, in order to achieve uniform and continuous spinning, the requirements for the rotation of the spinning solution are very high. The size, direction, geometric characteristics of the nozzle and the internal structure of the turntable will all be related to the fiber diameter, polymer solution or solution. The inside of the turntable is not only affected by centrifugal force, but also by the boundary effect of the turntable wall, which generates shear force. The external force will cause the molecular c...

AI Technical Summary

Problems solved by technology

[0003] Due to the need for high-speed rotation in the existing electrospinning, in order to achieve uniform and continuous spinning, the requirements for the rotation of the spinning solution are very high. The size, direction, geometric characteristics of the nozzle and the internal structure of the turntable will all be related to the fiber diameter, polymer solution or solution. The inside of the turntable is not only affected by centrifugal force, but also by the boundary effect of the turntable wall, which generates shear force. The external force will cause the molecular chain to untangle and align, affect the state of the polymer solution or solution at the nozzle, and further affect the fiber diameter. or fiber yield

If the position where the solution enters is eccentric to the center of the bottom of the liquid storage tank where the nozzle is located, it will cause uneven fibers and have a great impact on the spinning effect. During the rotation of the solution driven by the high-speed rotation of the nozzle, the eccentricity of the vortex center during the rotation of the solution will have a negative impact on the spinning effect. Spinning quality has a great influence

Images