Annular flake-shaped electrode electrostatic spinning device

Abstract

The invention discloses an annular flake-shaped electrode electrostatic spinning device. The annular flake-shaped electrode electrostatic spinning device comprises a spinning system, a power system, a coating mechanism, a liquid supply system, a cleaning mechanism, a collecting system and a high-voltage power supply, wherein the collecting system is positioned above the spinning system; the spinning system comprises a spinning electrode and a base; the spinning electrode is fixed to the base; the power system drives the base and the spinning electrode to rotate in a single direction; the coating mechanism and the cleaning mechanism are arranged on the spinning electrode and are fixed; the cleaning mechanism is positioned in front of the coating mechanism in the direction of motion of the spinning electrode; the collecting system comprises a collecting electrode; the spinning electrode is an annular flake; the emitting end of the annular flake is of a tip structure. According to the annular flake-shaped electrode electrostatic spinning device, the yield and the quality of nano-fibres can be improved; batch preparation of the nano-fibres is realized; the mechanisms are simple; the operation is simple and convenient; industrialized application is easy to realize.

Description

technical field [0001] The invention relates to the technical field of electrospinning, in particular to an electrospinning device with an annular sheet-shaped electrode. Background technique [0002] Electrospinning technology is a technology that uses electrostatic field force to produce nanofibers. Its principle is: in a high-voltage electrostatic field, the charged polymer solution forms a Taylor cone under the action of the electric field force. When the electric field force is large enough, the charged liquid The droplets overcome the surface tension to form a charged jet, and finally deposit and solidify into a nanofiber structure on the collection mechanism. [0003] Traditional nozzle-type electrospinning devices are prone to nozzle clogging and difficulty in cleaning, and array nozzles are prone to "edge effects" during the spinning process, which affects fiber quality and spinning efficiency, resulting in low output. [0004] Compared with nozzle-type electrospin...

AI Technical Summary

Problems solved by technology

The needleless electrospinning technology proposed in patent WO2005 / 024101A1 has a large fiber output, but the spinning solution is exposed to the air, and the diameter of the produced fiber is uneven. In addition, the electric field distribution of the spinning electrode is uneven, and the spinning High critical voltage and high energy consumption

Patent CN104313705A proposes a nanofiber spinning method of annular electrode wire, which can prevent the spinning solution from being exposed to the air and realize continuous coating of the solution, but the installation and fixing method of the electrode wire is not reasonable enough, and at the same time, it lacks effective Self-cleaning device, and the structure is too complex to be suitable for batch nanofiber fabrication

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