Polymer spraying mechanism for static spinning nanofiber

Abstract

The invention discloses a polymer spraying mechanism for static spinning nanofiber. The polymer spraying mechanism comprises a polymer feeding mechanism and a spinning needle head, the polymer feedingmechanism comprises a polymer storage tank, a metering pump, a quantitative feeding pipe and a polymer feeding pipeline, the spinning needle head comprises a nozzle pipe and detachable needle head units, and a nozzle pipeline, a nozzle distributor and a nozzle inner cavity are arranged in the nozzle pipe. The polymer spraying mechanism is simple in principle and reasonable in design, feeding accuracy of a polymer solution can be ensured effectively, and spraying stability of the spinning needle head is improved, so that quality of produced nanofiber is improved indirectly; the spinning needlehead is improved, and the needle head units can adjust spinning direction along with position changing; the needle head units are proper in number, so that time for stopping for maintenance is reduced, and nanofiber production efficiency is improved; polymer pressure in the nozzle inner cavity is controllable, the circumstance that polymer is sprayed dramatically and blocks needle heads is eradicated, quick and stable spinning is realized, spinning efficiency can be improved effectively, and spinning uniformity is improved.

Description

technical field [0001] The invention relates to the technical field of nanofiber production, in particular to a polymer injection mechanism for electrospinning nanofibers. Background technique [0002] Nanofibers are mostly produced by electrospinning machines through electrospinning. [0003] In the process of electrospinning, the reconciled polymer solution supplies the polymer to the spinneret needle on the electrospinning machine through the polymer injection mechanism, so that the polymer solution is ejected from the needle and moves in the electrostatic stand. Electrospinning is performed to obtain nanofibers. [0004] The polymer injection mechanism of the existing electrospinning machine is usually carried out in the way of pressure push, by controlling the movement of the push rod to squeeze the polymer solution in the pipeline, so as to supply the polymer to the injection needle. This kind of polymer supply method of pressure push often has certain defects. The m...

AI Technical Summary

Problems solved by technology

This kind of polymer supply method of pressure push often has certain defects. The main defect is that the accuracy is low, which easily leads to large errors in polymer supply, less polymer supply, effective nanofiber density, and reduced production effect. However, if there is too much polymer supply, it will easily lead to excessive injection of the needle, resulting in clogging of the needle, affecting the progress of subsequent production, and restricting the improvement of nanofiber production efficiency.

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