A device and method for producing polymer nanofibers

Abstract

The invention relates to a device for producing polymer nanofibers, the device at least comprising a 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, the The substrate in the receiving device passes through the electric field between a plurality of first electrodes (3) and a plurality of second electrodes (4), or is arranged in the electric field, and the liquid bath (2) is opposite to at least one of the first electrodes (4). The second electrode (4) performs a reciprocating motion by moving, and during the contact and / or separation of the second electrode (4) with the polymer solution in the liquid tank (2), the second electrode (4) dips in the The polymer solution is sprayed on the substrate based on the electric field to form a nanofiber layer. By utilizing the surface tension of the liquid, the invention facilitates smearing the polymer solution on the metal surface, and the solution smeared on the metal surface is more uniform, any part of the metal dipped in 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 a polymer solution under high voltage static electricity. Electrospinning can prepare fibers with diameters ranging from tens to hundreds of nanometers. The products have high porosity and large specific surface area, diversified components, and uniform diameter distribution. They have great applications in biomedicine, environmental engineering and textile fields. high application value. [0003] The principle of electrospinning is: the polymer solution or melt is charged with high-voltage static electricity of several thousand to tens of thousands of volts, and the charged polymer droplets are accelerated at the top of the Taylor cone of the capillary under the action of the electric field force. When the electric field force is...

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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