Jet yarn spinning device for electrostatic spun nano fiber and preparing method

Abstract

The invention discloses a jet yarn spinning device for an electrostatic spun nano fiber, which includes a collecting device, wherein two thread jetting devices are arranged on the two sides of the collecting device and connected with a high-voltage electrostatic generator; a buncher is arranged below the collecting device; the two thread jetting devices are arranged between the collecting device and the buncher and symmetrically and oppositely arranged along the axis; a jet nozzle twister is arranged below the buncher; a delivery roller is arranged below the jet nozzle twister; a winding mechanism is arranged below the delivery roller; and the collecting device, the buncher, the jet nozzle twister and the delivery roller are arranged along the same axis from top to bottom. The electrostatic spun nano fiber spinning device integrates thread jetting, collecting, drawing, twisting and winding, and can continuously prepare the electrostatic spun nano fiber yarns. The nano fiber spinning method has simple process, high yarn yield, is suitable for multiple polymer yarn solutions, and realizes the continuous and scaled preparation of the nano fiber yarns.

Description

technical field [0001] The invention belongs to the field of textile machinery, and relates to an electrospinning nanofiber yarn forming device and method, in particular to an air-jet spinning yarn forming device and method capable of continuously preparing electrospinning nanofiber yarns. Background technique [0002] Electrospinning technology is the most effective method for preparing nanofibers. The principle of electrospinning is that under the action of an electrostatic field, the polymer droplets located at the spinneret become Taylor cones. When the electrostatic field force exceeds the surface tension of the liquid Threshold, a good charged jet will be formed, which will be accelerated, drawn, and thinned, and nanofibers will be formed after the solvent volatilizes. Due to different metal collection devices, nanofiber mats of different shapes can be obtained. Although electrospun nanofiber mats can be directly used in many aspects such as filter materials, tissue en...

AI Technical Summary

Problems solved by technology

Chinese patent 200810018267.8 discloses an electrospinning nanofiber yarn system and a method for preparing nanofiber yarn. Electrospun nanofibers are deposited on a slotted disc, and then twisted to obtain nanofiber yarns after being drawn out by lead wires and godet rollers. , the fibers in this patent cannot be completely gathered in the groove, resulting in waste of fibers. In addition, the disc needs to be cut with a cutter at the position where the nanofiber bundle is pulled out once every revolution of the disc. The process is more complicated and lacks stability and continuity.

The above methods all use the traditional single needle as the spinneret, the output is only 0.1-1g / h, and the nanofiber yarn cannot be obtained stably and continuously, and there is a problem that the fibers in the yarn cannot be well oriented.

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