A melt differential electrospinning device

Abstract

The invention discloses a melt differential electrostatic spinning device, which mainly includes an airflow-assisted outer cone type electrostatic spinning nozzle, a roller receiver, an outer cone airflow conduit, a machine head, screws, positioning nuts, and a cyclone airflow auxiliary device , barrel, barrel fixing block, heating ring, temperature sensor, grounding electrode and high-voltage electrostatic generator, air compressor, etc. The outlet end of the barrel is connected to the inlet end of the flow channel of the machine head, and the outer cone of the airflow conduit and the outer cylinder The surface and the cylindrical hole in the head form a gap, and the melt flows evenly in the gap. The cyclone airflow auxiliary device is placed in the center of the electrode plate with holes, and the high-speed air flow is connected to the cyclone airflow auxiliary device and the outer cone airflow duct respectively. The whirlwind airflow auxiliary device of the present invention can form the effect of whirlwind and downward high-speed airflow. The whirlwind helps the gathering and refinement of fibers, and the downward high-speed airflow makes the upper part of the cyclone airflow auxiliary device form a local negative pressure. The whirlwind and downward high-speed airflow The combined effect makes the fiber 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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