A gravity ring electrospinning device and method

Abstract

The invention discloses a gravity ring electrospinning device and method. The device includes an annular nozzle and an annular liquid supply device, the annular liquid supply device is arranged in the hollow structure inside the annular nozzle, and is connected with the solution propeller on the outside of the annular nozzle through a hose, and the annular nozzle is connected to the high-pressure generator Connection; there is a gap on the upper part of the circular liquid supply device. The spinning method is as follows: the solution is injected into the annular liquid supply device, and when the solution overflows, it continuously flows into the hollow structure of the annular nozzle; the high voltage generator applies a positive voltage to the annular nozzle, and when the voltage exceeds the critical threshold, the ring nozzle Multiple jets are formed at the nozzle below, and under the action of the electric field force, the jets move toward the drum, and with the volatilization of the solvent, they are finally deposited on the surface of the drum. The invention controls the solution through an overflow liquid supply device, and generates charge accumulation at the edge of the gap under the ring, so as to realize electrospinning in the direction of gravity.

Description

technical field [0001] The invention relates to a gravitational circular electrostatic spinning device and method, belonging to the technical field of electrostatic spinning and textile machinery. Background technique [0002] Electrospinning is one of the most effective ways to prepare nanofiber materials. Compared with the preparation techniques of nanomaterials such as stretching method, template synthesis method, and self-assembly, electrospinning has the advantages of simple operation, short preparation process, and wide selection of materials. advantage. Compared with traditional textile fiber materials, due to their extremely small scale, nanofibrous materials have many characteristics that are difficult to exhibit at large scales, such as obvious surface and interface effects, unique small size effects, large specific surface area and extremely large size. high porosity etc. Therefore, nanofiber materials have a wider range of applications, such as air filtration, ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the current mass production of electrospinning nanofiber technology, its spinning direction is relatively single bottom-up, which limits the wider application of electrospinning technology

Images