Shear-type drafting electrospinning direct-spinning micron yarn device, method and application

Abstract

The invention provides a shear-type-drafting electrostatic-spinning micron-yarn direct-spinning device and a method and use thereof. The device consists of a horn-shaped jet, a shear-drafting conical tube, a bundling and winding mechanism, a liquid injection cavity, a negative high-voltage source and a driving mechanism. According to the micron-yarn direct-spinning method, a high-polymer solution, extruded from the liquid injection cavity, is of an umbrella shape at the edge of a horn under the action of a high electric field, jetted sub-micron filaments form nano filaments on the high-speed rotating conical tube under the action of shear-drafting, the nano filaments are solidified, then, are collected by a bundler and are twisted into micron yarn, and the micron yarn is wound so as to produce yarn capable of being woven directly or after being twisted and doubled. The device is simple, effective and reasonable in structure and can be used for realizing the nano and high-strength spinning and twisted collected yarn forming of monofilaments.

Description

technical field [0001] The invention relates to the fields of electrospinning, electrospinning and nanofiber spinning machinery, in particular to a spinning technology of electrospinning micrometer yarns. Background technique [0002] In recent years, with the development of nanotechnology, electrospinning technology has achieved rapid development. At present, the nanofibers obtained by electrospinning are mostly in the sub-micron scale (100-1000 nm), and there are few real nanofibers smaller than 100 nm. How to reduce sub-micron fibers to nano-scale fibers is a problem to be studied by scholars. [0003] Electrospinning fibers have applications in the fields of environment, energy, biomedicine, optoelectronics, etc. However, the electrospun nanofibers currently studied mainly appear in the form of films or felts directly stacked by fibers, which are two-dimensional disordered fiber aggregates, which seriously hinder the expansion of this material. Usually the yarn can be...

AI Technical Summary

Problems solved by technology

It is an indisputable fact that there is no drafting device in the electrospinning process, neither is it directly spun into a yarn, and the fiber fineness, low strength, large damage, many processes, and high energy consumption in the spun yarn

[0007] In summary, the existing electrospinning direct spinning yarns do not produce shearing and drafting methods to achieve the direct spinning of electrospinning drafts that are thinner and can achieve true nanometer size and improved monofilament strength (direct spinning) technology

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