A vortex receiver for electrospinning and method for preparing nanofibers

Abstract

The invention relates to an electrostatic spinning receiver and belongs to the field of electrostatic spinning. According to a vortex type receiver for electrostatic spinning, an airflow hole is formed in a collecting face of the vortex type receiver and is used for balancing the air pressure of the two sides of the collecting face; the vortex type receiver can continuously form a rotary vortex type acting on the nano-fibers in the rotary receiving process, so that the nano-fibers rotate according to a certain direction and under the action of the rotary vortex type. The nano-fibers rotate according to a certain direction and under the action of the rotary airflow, so that dispersion and disordering of the nano-fibers caused by electrostatic repulsion between the nano-fibers are avoided. The rotary nano-fibers are ordered so as to orderly deposit on the vortex type receiver and are twisted to form a nano-fiber aggregation. The nano-fibers of the cross section of the nano-fiber aggregation are arranged orderly and the winding direction is consistent, so that the nano-fiber aggregation is more orderly, and the formed nano-fiber aggregation has a more compact and orderly structure and more stable performance.

Description

technical field [0001] The invention relates to a receiver for electrostatic spinning, in particular to a vortex receiver for electrostatic spinning and a method for preparing nanofibers. Background technique [0002] As a nanofiber manufacturing technology, electrospinning mainly uses high-voltage electric field to make the droplet become cone-shaped to form a Taylor cone, and then extend under the action of electrostatic force to form nano-scale ultrafine fibers. Based on the current research on electrospinning, it is believed that the essence of electrospinning is the rapid generation of jet flow. Therefore, a series of research on electrospinning now mainly focuses on the properties of the jet ejected from the Taylor cone, which is specifically reflected in the solution. Or melt injection needle research, such as various shapes or types of injection needles, or needle-free injection cylinders or injection devices, in order to obtain different shapes of Taylor cones. Or ...

AI Technical Summary

Problems solved by technology

[0003] In these researches on the production method and collection and utilization method of nano-ultrafine fibers based on electrospinning, the former mainly studies the use of different injection heads or nozzles to produce Taylor cones of different shapes, all of which are collecting plates or receiving plates. Collect the generated fibers; although the latter improves the collector or receiver, the collector is not used as a component of the high-voltage electric field, but only as a collection device for the ultra-fine fibers generated in the high-voltage electric field. collect

[0004] Moreover, in the latter, simple plate-type or horn-shaped receiving devices are often used to collect nanofibers. Using this collection method, all nanofibers are piled up in a layer without order, and they are not tightly combined with each other, and they are tightly wound only by axial tension. , the structural strength is small, and the utilization rate of nanofiber axial tension is not high

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