Electrostatic spinning apparatus with multi-spraying heads for preparing coaxial composite continuous nanometer/micron fibre

Abstract

The invention is a kind of multi-snoot electrostatic spinning device for producing coaxial compound continuous nano and micron meter fiber, it is made up of an inner liquid pot, an outer liquid pot, a sealing head, a several coaxial spraying pipe, liquid supplying system, flow guiding pipe, electricity guiding bar, electrostatic generator. Each snoot contains an inner and outer hollow thin spraying pipes, the inner one and the outer one are coaxial, the inner spraying pipes are all set on the subjacent sealing head of the inner liquid pot, which is the ejection outlet of inner liquid; the outer spraying pipes are all set on the subjacent sealing head of the outer pot, which is the ejection outlet of the outer liquid. The conducting bar in the inner and outer liquid pots are connected with the electrostatic generator, adds high pressure direct current electric field in the inner and outer liquid material, drives the liquid to be ejected form the spraying pipes, forms several radiate flows with the same centre. The fixed pressure liquid supplying system sprays out the radiate flow which is even and continuous, then the product can be got through high frequency extension and bending deformation.

Description

technical field [0001] The invention relates to a nano-micro fiber material preparation device, in particular to an electrospinning multi-nozzle device for preparing coaxial composite continuous nano / micro fibers. Background technique [0002] Combining two materials coaxially instead of mixing into one rod or wire can meet many needs in industrial materials or in daily life. The most typical is a pencil, the surface layer and the core are two different materials coaxially composited into a rod. When the diameter of the coaxial composite rod reaches the order of several microns or less, its application fields are very wide. Although there are many mature processes and devices for the preparation of large-scale coaxial composite rod wires (such as pencils), such devices are not suitable for ultrafine (several microns to sub-micron) coaxial composite fibers preparation. The diameters of fibers obtained by spinning means in the conventional textile industry, such as dry or w...

AI Technical Summary

Problems solved by technology

However, the spinning unit with a single nozzle is not efficient

Until now, no multi-nozzle device has been found to prepare continuous coaxial composite ultrafine fibers (diameters below microns to several microns)

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