Electrostatic spinning device for preparing nanofibers

Abstract

The invention discloses an electrostatic spinning device for preparing nanofibers. The device mainly comprises a liquid spraying device, an electrostatic generator, a needle electrode, a plate electrode, a spinning pond, a liquid storage tank and a receiving curtain, wherein the liquid spraying device is fixed at the bottom of the spinning pond to be connected with the liquid storage tank, the needle electrode is arranged at the bottom of the spinning pond to be connected with the electrostatic generator, the plate electrode is arranged above the spinning pond and is grounded, and the receiving curtain is arranged below the plate electrode. During spinning, a solution is fed into the liquid spraying device from the liquid storage tank at certain pressure and certain flow rate, and forms a petunia-shaped thin liquid film at the top end of the liquid spraying device, the electrostatic generator enables a static electric field to be formed between the needle electrode and the plate electrode, jet flow is formed at the top end of the liquid film and flies off, and is deposited on the receiving curtain to form a nanofiber felt, and a solution in the spinning pond is pumped back into the liquid storage tank. The electrostatic spinning device has the benefits that the structure is simple, the cost is low, a spinning solution can be recycled, the production efficiency is high, large-scale production of the nanofibers can be realized, and requirements on the nanofibers and relevant products of industrial production are met.

Description

Technical field

[0001] The invention relates to an electrostatic spinning device capable of preparing nanofibers, which belongs to the technical field of textiles and new materials. Specifically, a liquid jet is used to spray a thin liquid film similar to a bellflower shape, and is used in a high-voltage electrostatic generator, an electrode and a receiving curtain. Under the joint action of the liquid film, multiple jets are generated at the top of the liquid film and finally form a device for nanofiber felt. Background technique

[0002] Electrospinning technology is a technology that uses electrostatic force to generate a jet of polymer solution or melt and finally solidify into nanofibers. The main principle of this technology is to first make the polymer solution or melt form curved liquid droplets, liquid column films, bubbles, crater-like bulges, etc., and then use electrostatic force to eject a jet from the top of the curved surface. The jet flies to the negative plate u...

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