A polymer injection mechanism for electrospinning nanofibers

Abstract

A polymer injection mechanism for electrospinning nanofibers disclosed by the present invention includes a polymer supply mechanism and a spinning needle, and the polymer supply mechanism includes a polymer storage tank, a metering pump, a quantitative supply pipe and a polymer supply pipeline, The spinneret needle includes a nozzle tube body and a detachable needle unit. The nozzle tube body is provided with a nozzle pipe, a nozzle distributor and a nozzle inner chamber. The principle of the invention is simple and the design is reasonable. The injection stability of the needle head is improved, which indirectly improves the quality of the produced nanofibers. At the same time, the spinneret head is improved. The needle head unit can adjust the spinneret direction with the change of the position. The number is appropriate, which reduces the downtime maintenance time. The production efficiency of nanofibers is improved, and the polymer pressure in the inner cavity of the nozzle is controllable, which prevents violent injection of polymers and clogging of needles, and realizes fast and stable spinning, which can effectively improve spinning efficiency and spinning uniformity.

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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