Dot-matrix type receiver for electrostatic spinning and method for preparing nanofibers

Abstract

The invention relates to an electrostatic spinning receiver and belongs to the field of electrostatic spinning. A dot-matrix type receiver for electrostatic spinning comprises a plurality of receiving pins which are perpendicular to an insulating base plate and are made of metal, the bottoms of all the receiving pins are connected through wires to achieve equal potential of each receiving pin, and the non-fixed ends of the receiving pins are opposite to a yarn outlet device, so that an electrostatic field between the yarn outlet device and the dot-matrix type receiver is split into a plurality of unit electrostatic fields at one end close to the dot-matrix type receiver. Nanofibers formed by electrostatic spinning are deposited respectively on each receiving pin of the dot-matrix type receiver through each unit electrostatic field and then are twisted to form a nanofiber aggregate. The nanofibers of a cross section of the formed nanofiber aggregate are divided into multiple strands of nanofibers, so that the nanofiber aggregate is more ordered, each strand of internal nanofibers are closely combined with each other, each strand of nanofibers are mutually twisted and closely combined, and the formed nanofiber aggregate is denser and more ordered in structure and more stable in performance.

Description

technical field [0001] The invention relates to a receiver for electrostatic spinning, in particular to a lattice 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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