Device and method for twisting electrostatic spinning nanofiber into yarn in jetting mode

Abstract

The invention relates to a device and a method for twisting electrostatic spinning nanofiber into yarn in a jetting mode. A spinning solution is injected in an injector of a fiber jetting device, a needle of the injector is connected with a high voltage static electricity generating device, the spinning solution is subjected to the effect of electric field force to form a Taylor cone to jet flow, the spinning solution is deposited on the surface of a solvent in a water tank to form a felt-shaped material, nanofiber bundles are formed by the felt-shaped material through mobility of the solvent and traction of a roller and subsequent devices, a drafting device is heated to remove the solvent contained in the nanofiber bundles to achieve effective drafting, the nanofiber bundles are sent in a Laura jaw, an air compressor is started, the nanofiber bundles enter a double-nozzle twisting device and are twisted into the yarn through mutual effect of a first nozzle and a second nozzle, and the yarn is led out through an output roller and wound into a cylinder through a winding device. The device and the method for twisting the electrostatic spinning nanofiber into the yarn in the jetting mode integrate fiber jetting, condensation, bundle concentration, drafting, twisting and winding and are simple in device and process, suitable for various polymer spinning solutions and capable of achieving continuous and large-scale production of the nanofiber yarn.

Description

technical field [0001] The invention relates to the field of electrospinning and the field of textile machinery, in particular to an electrospinning nanofiber air-jet twisting yarn forming device and method. Background technique [0002] Electrospinning is currently one of the most popular techniques for spinning nanofibers. Its products have very excellent properties, such as a large specific surface area, flexible surface functionalization and excellent mechanical behavior, etc., and can be applied to tissue engineering, wound dressings, drug release, filter materials, composite reinforcement materials, sensors Wait. Since the electrospinning process is simple, the preparation process is shorter than conventional spinning, and the products have excellent functions, since Anton Formhals obtained the US patent in 1934, electrospinning has been the goal of fiber scientists and textile developers for a long time. This kind of nanofiber will become the leading product in the ...

AI Technical Summary

Problems solved by technology

However, so far, no continuous single nanofilaments have been produced, and the orientation degree of oriented nanofibers is not high and the yield is relatively low. At the same time, continuous single nanofibers and oriented nanofiber bundles have low strength and are easy to Damage, unable to have the same wide application as traditional textile fiber materials (woven fabrics, knitted fabrics, etc.)

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