Metal mesh belt type electrostatic melt spinning device and technique

Abstract

The invention discloses a metal mesh belt type electrostatic melt spinning device and technique, belonging to the field of electrostatic spinning. The device mainly comprises an extruder, a filter mesh, a melt metering pump, a feeding machine head, an infrared heater, an air knife, an airflow regulating valve, an air compressor, a metal mesh belt, a pored electrode plate, a high-pressure electrostatic generator, a mesh paving belt, a wind chamber, an exhaust fan, a hot rolling device and a winding device. According to the metal mesh belt type electrostatic melt spinning device and technique, even and thin-layer melts are directly coated on the surface of the metal mesh belt by adopting non-nozzle mesh belt design through a wide film or a plate machine head, the melts can form bulges on each fine mesh hole under the turbulence of auxiliary airflow, jet flow is formed under the drafting of lower high-pressure electric field force, single-layer non-woven fabric with the diameter of 500nm below can be manufactured, and multi-layer non-woven fabric with different diameters can also be prepared simultaneously in an online manner.

Description

Technical field [0001] The invention relates to a metal mesh belt type melt electrostatic spinning device and process, belonging to the field of electrostatic spinning. Background technique [0002] There are many methods for preparing nanofibers, among which spinning methods mainly include melt-blown method, electrostatic spinning method, centrifugal spinning method, drawing method and bi-component composite spinning method. Each method has advantages and disadvantages. The main principle of the melt blowing method is to use high-speed hot air to draw the polymer melt stream. As one of the most mature industrial spinning technologies, it has a high spinning efficiency, but the diameter of the prepared fiber is relatively large. , Generally 2-5μm, and can not spin continuous long fibers; as the most promising process for preparing nanofibers, electrospinning uses high-voltage electrostatic force to stretch the polymer solution or melt, although the solution electrospinning The f...

AI Technical Summary

Problems solved by technology

The US patent (patent number US2004 / 030901) combines meltblown and solution electrospinning, and uses high-speed airflow to assist solution electrospinning. The device can work independently under the conditions of meltblown spinning and electrospinning, and is more suitable for Many working conditions, but it still uses a single needle as the main body of the nozzle, and it is only suitable for solution

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