Device and method for producing polymer nanofibers

Abstract

The invention relates to a device for producing polymeric nanofibers. The device comprises at least one liquid tank (2), a receiving device (7), and a plurality of first electrodes (3) and a plurality of second electrodes (4) forming a potential difference; a substrate in the receiving device passes through the electric field between the first electrodes (3) and the second electrodes (4), or is arranged in the electric field; and the liquid tank (2) reciprocates in a manner of moving relative to the at least one second electrode (4), and in the process that the second electrode (4) is in contact with and / or separated from a polymer solution in the liquid tank (2), the polymer solution dipped by the second electrode (4) is sprayed to the substrate based on the action of the electric field to form a nanofiber layer. The polymer solution can be conveniently smeared on the metal surface by utilizing liquid surface tension, the solution smeared on the metal surface is more uniform, any part of the metal dipped with the polymer solution can be spun, and the spinning efficiency is high.

Description

technical field [0001] The invention relates to the technical field of nanofiber material preparation, in particular to a device and method for producing polymer nanofibers. Background technique [0002] Electrospinning is the process of spinning with a polymer solution under high-voltage static electricity. Electrospinning can prepare fibers with a diameter of tens to hundreds of nanometers. The product has a high porosity and a large specific surface area, a variety of components, and a uniform diameter distribution. It has great potential in the fields of biomedicine, environmental engineering, and textiles. High application value. [0003] The principle of electrospinning is: the polymer solution or melt is charged with thousands to tens of thousands of volts of high-voltage static electricity, and the charged polymer droplets are accelerated at the apex of the Taylor cone of the capillary under the action of the electric field force. When the electric field force is l...

AI Technical Summary

Problems solved by technology

Therefore, the driving equipment needs to regularly clean the solidified material of the silk solution, which affects production efficiency and wastes the silk solution

Not only that, the metal equipment will be affected by the high-voltage electric field during operation to generate different small electric fields, which will interfere with the spinning process of the silk solution at both ends of the metal wire, making the spinning effect at the corresponding position poor and the spinning density uneven

In the case that the metal wire itself carries high voltage, driving the metal wire itself is risky, not only because of its slender geometric state, it is prone to tip discharge, which may cause sparks, and then has the risk of fire, and the driving The isolation of the mechanism of the metal wire from the wire with high voltage also poses a technical problem

[0012] In the prior art, there is still an unsolved problem about how to improve the uniformity of the textile density through the movement of the wire, the concentration of the mucus, and the parameter matching of the high voltage.

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