Needleless electrostatic spinning device

Abstract

The invention relates to a needless electrostatic spinning device. The needless electrostatic spinning device is composed of a spinning jet, a reception electrode, a high voltage power supply, a solution tank used for storing polymer solution, a waste fluid slot, base materials, a winding system of the base materials and the like, or the needless electrostatic spinning device is composed of the spinning jet, the reception electrode, the high voltage power supply, the solution tank used for storing polymer solution, the waste fluid slot, base materials, the winding system of the base materials, a heating device, an electric heating control device thereof and the like. The spinning jet adopts a slit-type spinning jet. The spinning jet is integrally constituted through the tight fitting of a left semi-spinning jet and a right semi-spinning jet, and the left semi-spinning jet and the right semi-spinning jet are fastened through a threaded connector, or the spinning jet is constituted by a left spinning jet component, a right spinning jet component and a flow-equalizing grid plate clamping piece arranged between the left spinning jet component and the right left spinning jet component. According to the needless electrostatic spinning device, the slit-type spinning jet is adopted, assembly, disassembly and cleaning are convenient, nano fibers can be produced continuously and effectively, and the spinning efficiency is improved greatly; the needless electrostatic spinning device can be applied both to the electrostatic spinning of the polymer solution and to the electrostatic spinning of the polymer molten mass.

Description

technical field [0001] The invention relates to the field of high-voltage electrospinning, in particular to a needle-free electrospinning device for continuously and efficiently producing nanofibers. Background technique [0002] At present, electrospinning technology is the mainstream technology for preparing nanofibers. As early as 1934, Anton Fomhals disclosed a single-needle high-voltage electrostatic field spinning device in a patent. However, the efficiency of this single-needle spinning device is extremely low, and the production capacity of preparing nanofibers is only 0.001~0.01g / h. In order to improve spinning efficiency, successors have developed multi-needle electrospinning devices, as disclosed in patents 200910031948.2, 200610157106.8, and WO2005073441A1. Usually, dozens or even hundreds of individual needles are combined for electrospinning. The spinning efficiency of the multi-needle electrospinning device can be increased to 0.1~1.0g / h. However, because t...

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Problems solved by technology

[0003] In order to overcome the shortcomings of the prior art needle-type electrospinning device that the needle is easy to block and difficult to clean, and that the metal wire electrode spinning device cannot perform electrospinning on the polymer solution, the present invention provides a needle-free electrospinning device. It is not only easy to disassemble, easy to clean, and overcomes the shortcomings of easy clogging and difficult cleaning of needle-type spinning heads, but also can realize electrospinning for polymer melts, overcoming the fact that metal wire electrodes can only be used for polymer solutions. Electrospinning and spinning process have a large amount of solvent volatilization to form organic waste gas that is harmful to the human body and pollutes the environment.

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