A high-speed preparation device and process of centrifugal electrospinning nano-twisted yarn

Abstract

The invention discloses a high-speed preparation device of centrifugal electrostatic spinning nanometer twisted yarns. The high-speed preparation device mainly comprises a feed extrusion device, a motor, an electromagnetic heating coil, a bearing, a conical ring perforated electrode, a centrifugal rotating umbrella-type spray head, an air compressor, a cyclone vacuum generator, a roller receiving device, a high-voltage electrostatic generator, a synchronous toothed belt and a rack, wherein the motor drives the centrifugal rotating umbrella-type spray head to rotate at high speed; the electromagnetic heating coil is in non-contact connection with the centrifugal rotating umbrella-type spray head and is heated through radiation; the feed extrusion device is used for supplying feed to the centrifugal rotating umbrella-type spray head through a hole in the center of the centrifugal rotating umbrella-type spray head; the conical ring perforated electrode is fixed at the middle position of the center of the rack. The high-speed preparation device is combined with an electrostatic spinning technology and a centrifugal spinning technology; a rotating airflow is formed in a chamber by the combined use of the air compressor and the cyclone vacuum generator to guide fiber to form twisted yarns, so that the orientation controllability of nanofiber is achieved; conditions are created for industrial application of the nanofiber in the specific industries, such as water treatment.

Description

technical field [0001] The invention relates to a high-speed preparation device and process of centrifugal electrostatic spinning nano-twisted yarn, which belongs to the field of electrostatic spinning. Background technique [0002] Electrospinning has a history of nearly 100 years since its appearance. In these decades, researchers have never stopped studying electrospinning, and the number of related documents has also increased exponentially. However, from the statistical data, by 2012 there were 3041 articles on solution electrospinning, while there were only 200 articles on melt spinning. The instrumentation of melt electrospinning is more complicated than that of solution electrospinning. [0003] The basic principle of solution and melt electrospinning is that the solution or melt gradually deforms under the action of a high-voltage electrostatic field after passing through the spinneret hole. When the electric field force is greater than its surface tension, the sol...

AI Technical Summary

Problems solved by technology

However, most of the currently prepared fibers are in the form of single nanofibers, which have disadvantages such as poor strength, poor orientation controllability, and inability to produce continuous long nanofibers. For this reason, researchers have tried to twist nanofibers to obtain Better performance nanofibers, invented methods and devices for preparing oriented nanofibers and continuous nanofiber yarns

The patent "Preparation Method of Nanofiber Filament Bundle" (200510038571.5) of Southeast University in China has invented a method for preparing nanofiber filament bundle, but this method cannot be twisted

Recently, Donghua University invented "A Device and Method for Continuous Preparation of Oriented Electrospinning Nanofiber Yarn" (201310058070.8), which proposed a method for continuously preparing oriented nanofiber yarn, but because it is only suitable for solution electrospinning, and Using conventional spinnerets, the production efficiency is not high, and the twisting process is complicated, thus limiting its industrial application

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