Linear nozzle for electrostatic spinning

Abstract

The invention relates to an electrostatic spinning nozzle, in particular to a linear nozzle for electrostatic spinning. The linear nozzle is provided with a solution tank, a rotating shaft, a spiral metal ring, supporting bases and a driving device. The upper surface of the solution tank is open. The rotating shaft is arranged above the solution tank, is conductive and is externally connected with a high voltage electrostatic generation device. The two ends of the rotating shaft are connected with the driving device. The left and right sides of the rotating shaft are fixed to the supporting bases respectively. The rotating shaft is fixedly connected with the two ends of the spiral metal ring and located in the axis position of the spiral metal ring. The linear nozzle for electrostatic spinning solves the problems that the yield of an existing electrostatic spinning device is not high enough and the uniformity of thicknesses of spun fiber membranes is low, and can be used for manufacturing nano-fiber membranes on a large scale. The linear nozzle has the advantages of being simple in structure, low in cost, high in efficiency and the like. The spinning yield is greatly improved compared with a traditional needle tip electrostatic spinning nozzle, the problem that the nozzle is blocked does not exist, and the thickness consistency of the spun nano-fiber membranes is high.

Description

technical field [0001] The invention relates to an electrostatic spinning nozzle, in particular to a linear nozzle for electrostatic spinning which can be used for large-scale spinning. Background technique [0002] Nanofiber manufacturing and application technology is the focus of cutting-edge science and technology in recent years. In the fields of information, biology, environment, etc., nanofiber technology has a great impact on the industry. With the development of nanotechnology, electrospinning technology, as an effective and practical method for preparing nanofibers, has attracted increasing attention in the field of nanomaterials research. As early as 1934, Formhals invented a device that uses an electrostatic field to produce polymer ultrafine fibers. However, until recent years with the development of modern science and technology and the rise of nanotechnology, electrospinning technology has not been more in-depth research and has achieved great development. M...

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Problems solved by technology

However, the preparation process of this method is unstable, and the problem of clogging of porous tubes is also difficult to solve

Chinese patent CN200810153891.9 reports a non-woven non-batch electrospinning device, which uses a metal cylinder immersed in a polymer solution and cast with a tapered thread as the nozzle to replace the traditional needle-point nozzle for spinning. Although it is significantly improved, it has the disadvantage of high injection voltage threshold and cannot spin nanofibers containing two substances at the same time

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