Differential melt electro-spinning device adopting high-velocity water flow assisted twisting

Abstract

The invention relates to a differential melt electro-spinning device adopting high-velocity water flow assisted twisting and belongs to the field of electrostatic spinning. The differential melt electro-spinning device mainly comprises a spray head outer cylinder, a material flow pass, a spray head core rod, an air flow guide tube, a hot air gun, an air compressor, a heating coil, a perforated electrode plate, an electrostatic generator, a perforated insulation plate, a water pump, a water flow inlet channel, an annular water channel, an annular water flow channel, adjusting screws, adjusting-fixing plates, fixing screws, a twisting funnel, a grooved roller and a collection roller. The differential melt electro-spinning device utilizes high-velocity water flow to orderly arrange and deliver multiple fibers in the water channel, the fibers are fed into the twisting funnel along with the water flow to be rotatably twisted, the twisting degree can be adjusted by controlling an inclination angle of the water channel, twisted fibers fall into the grooved roller to be drawn close through compaction, and finally compact twisted single-fiber bundles are collected through the collection roller. The differential melt electro-spinning device can efficiently card fibers on the premise that normal spinning of an original spinning device is not influenced, and polymer melts can be made into twisted threads through electrostatic spinning in a one-time forming mode.

Description

technical field [0001] The invention relates to a melt differential electrospinning device with twisting aided by high-speed water flow, belonging to the field of electrospinning. Background technique [0002] With the advancement of science, nanofibers have become a research hotspot due to their special properties and ability to adapt to special fields. There are many ways to prepare nanofibers, such as melt blown method, centrifugal spinning, solution electrospinning, melt differential electrospinning, etc., but the melt blown method is difficult to form long fibers, while centrifugal spinning and solution electrospinning It is largely limited by the material, so melt differential electrospinning has become the most ideal way to prepare nanofibers. [0003] Because the diameter of the fiber prepared by melt differential electrospinning is very small, in order to achieve a certain strength and meet specific requirements, it is particularly important to twist it. Through tw...

AI Technical Summary

Problems solved by technology

However, the traditional twisting equipment is complicated and cannot be well adapted to the existing melt electrospinning process.

The existing invention patent "a high-speed preparation device and process of centrifugal electrospinning nano-twisted yarn" (CN 103409861 A) reveals that the twisting method of its fibers is realized by combining an air compressor and a cyclone vacuum generator to form a rotating airflow. However, due to the large airflow velocity in the suction hole, the fibers will be sucked into the hole, forming a blockage, which eventually leads to twisting failure

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