Melt differential electrospinning apparatus

Abstract

The invention discloses a melt differential electrospinning apparatus. The melt differential electrospinning apparatus mostly comprises an airflow auxiliary external cone-shaped electrospinning sprayer, a roller receiver, an external cone airflow guide pipe, a machine head, a screw, a positioning nut, a vortex airflow auxiliary device, a charging barrel, a charging barrel fixing block, a heating ring, a temperature sensor, a grounding electrode, a high-voltage electrostatic generator, an air compressor and the like. The tail end of an outlet of the charging barrel is connected with an inlet end of a flow channel of the machine head. A gap is formed between an outer cylindrical surface of the external cone airflow guide pipe and a cylindrical hole of the machine head and allows uniform melt flowing. The vortex airflow auxiliary device is disposed in the center of an electrode plate with a hole. High-speed airflow is connected to the vortex airflow auxiliary device and the external cone airflow guide pipe.The melt differential electrospinning apparatus has following beneficial effects: effects of vortexes and downward high-speed airflow are formed by the vortex airflow auxiliary device; vortexes are favorable to collection and refining of fibers; by means of downward high-speed airflow, local negative pressure is formed above the vortex airflow auxiliary device; and under combined effect of vortexes and downward high-speed airflow, fibers are further refined.

Description

technical field [0001] The invention relates to a melt differential electrospinning device for rapidly preparing nanofibers by using a cyclone airflow auxiliary device, and belongs to the field of electrospinning. Background technique [0002] Now that we have entered the era of nanotechnology, the electrospinning method has been recognized as the simplest and most effective method for preparing nanofibers. The research on nanotechnology has become a hot research topic at present. Due to the wide application of electrospun nanofibers in micro-nano filtration, high-performance non-woven fabrics, lithium battery separators, biomedicine, etc., its industrial development has more forward-looking value. At present, more than 30 kinds of polymers have been made into ultrafine fibers by this method. [0003] At present, the methods for industrialized fiber preparation mainly include meltblown method, self-assembly method, phase separation method, template polymerization method and...

AI Technical Summary

Problems solved by technology

At the same time, the cyclone airflow auxiliary device connected to the air compressor is placed in the center of the electrode plate with holes to generate a cyclone, and the fibers fall into the cyclone airflow auxiliary device to generate drafting, and finally achieve the secondary stretching effect on the fiber, which solves the problem in the nozzle. The melt at the tip is affected by the airflow and electric field, which leads to the problem of uneven collection of fibers on the drum, as well as the problem of fiber diameter refinement and long fiber gathering

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