Helical receiver for electrospinning and method of making nanofibers

Abstract

The invention relates to an electrostatic spinning receiver, and belongs to the filed of electrostatic spinning. A spiral line type receiver for electrostatic spinning is characterized in that the spiral line type receiver comprises an insulating base plate and a spiral metal line which is arranged on the insulating base plate, and the top tip of the spiral metal line protrudes outside. The top tip of the spiral metal line is opposite to a silk yielding device, so that the end, close to the spiral line type receiver, of an electrostatic field between the silk yielding device and the spiral line type receiver is split into a spiral layered structure. Nanofibers formed through electrostatic spinning deposit on the spiral metal line of the spiral line type receiver through all unit electrostatic fields, twisting is conducted, and a nanofiber assembly is formed. The nanofibers of the cross section of the nanofiber assembly are arranged in a spirally layered mode, the nanofibers are mutually and closely combined, the formed nanofiber assembly structure is more compact and ordered, and the performance is more stable.

Description

technical field [0001] The present invention relates to a receiver for electrospinning, in particular to a helical receiver for electrospinning 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 resea...

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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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