Device and method for ring-shaped electrostatic spinning in gravity direction

Abstract

The invention discloses a device and a method for ring-shaped electrostatic spinning in the gravity direction. The device comprises ring-shaped nozzles and ring-shaped liquid supply devices, wherein the ring-shaped liquid supply devices are arranged in hollow structures in the ring-shaped nozzles and connected with a solution propeller outside the ring-shaped nozzles through a hose, and the ring-shaped nozzles are connected with a high-voltage generator; notches are formed in the upper parts of the ring-shaped liquid supply devices. The spinning method comprises steps as follows: a solution isinjected into the ring-shaped liquid supply devices, and the solution continuously flows into the hollow structures of the ring-shaped nozzles when overflowing; the high-voltage generator applies positive voltage to the ring-shaped nozzles, when the voltage exceeds a critical threshold, multiple jet flows are formed at jet tips below the ring-shaped nozzles, and the jet flows move to a roller under the action of electric field force and are finally deposited on the surface of the roller with volatilization of a solvent. According to the device and the method, the solution is controlled by theoverflowing type liquid supply devices, charges are accumulated on gap edges below rings, and accordingly, electrostatic spinning in the gravity direction is realized.

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

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