Melt electrostatic spinning direct writing device and method

Abstract

The invention discloses a melt electrostatic spinning direct writing device and method. According to the heating manner of the device, the form of electromagnetic heating ring heating is adopted, theheating efficiency is improved, and the problems that in a traditional melt electrostatic spinning writing device, high polymer is heated through a heating manner of electric heating sheet, resistanceheating ring and water bath heating by means of the heat conduction form, the heat loss is large, and the heating efficiency is low. The invention provides a new voltage loading method. Due to the fact that a heating device does not make contact with a metal charging barrel, a spinning needle head can directly load positive voltage and negative voltage, and the spinning needle head and a receiving plate form a high-voltage electrostatic field. After a certain number of layers is printed, software sets and alternatively changes polarity of voltage loaded on the spinning needle head and the receiving plate, accumulation of electric charges in deposited fiber in the printing process is effectively neutralized, repulsion to fallen fiber is reduced, and thus the number of printed layers of direct writing of melt electrostatic spinning direct writing is increased. Further application of micro-nanometer products printed by the melt electrostatic spinning direct writing device is benefitted.

Description

technical field [0001] The invention belongs to the field of electrospinning, and in particular relates to a melt electrospinning direct writing device and method. Background technique [0002] Melt electrospinning direct writing technology is an emerging additive manufacturing technology. Its principle is to use electrostatic force to stretch polymer melt and induce deposition through three-dimensional moving platform to prepare highly ordered micro / nano fiber structure. This method can prepare various micro / nanofibers with specific patterns and arrangements. Compared with solution electrospinning direct writing technology, this method does not require toxic solvents, the final product is non-toxic, and there is no solvent volatilization during the spinning process, which can effectively improve the utilization rate of materials. Compared with ordinary 3D printing technology, the resolution of this method is higher, which can reach micron or even nanometer level. Therefor...

AI Technical Summary

Problems solved by technology

This heating method solves the problem of low thermal efficiency caused by heating by heat conduction, such as electric heaters, resistance heating coils, and water bath heating, when heating polymers.

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