Multi-spray-head electrostatic spinning device

Abstract

The invention provides a multi-spray-head electrostatic spinning device, and relates to an electrostatic spinning device. The multi-spray-head electrostatic spinning device is provided with a controllable injection device, a liquid guide pipe, a liquid distribution device, a high-voltage power supply, an upper layer gas hood, a lower layer gas hood, a curved surface electrode plate, spinning spray heads, an adapter, a lower layer gas guide pipe, an auxiliary pressure regulating valve, an auxiliary gas pump, an upper layer gas guide pipe, a pressure regulating valve, a gas pump and a receiving device. The batch continuous spinning is carried out through the spray heads, double layers of auxiliary gas flows are introduced, the electrostatic spinning speed is accelerated through the drawing force of the upper layer of auxiliary gas flows, the electrostatic spinning efficiency is improved, the nanometer fiber is refined, and the electro-spinning nanometer fiber diameter is reduced. The uniform distribution of the electro-spinning nanometer fiber on a collecting plate is promoted through the lower layer of auxiliary gas flows, the thickness uniformity of a nanometer fiber membrane is improved, the quality of the electrostatic spinning nanometer fiber is improved, charges at the jet flow surface can be carried away, the surface charge density is reduced, and the electrostatic interference among the jet flows is reduced. The electric field concentration phenomenon and the electrostatic interference can be reduced, the spray heads are convenient to dismount, clean and replace, and the operation and the control are easy.

Description

technical field [0001] The invention relates to an electrostatic spinning device, in particular to a multi-nozzle electrostatic spinning device with a large area and multiple jets of double-layer auxiliary gas. Background technique [0002] In recent years, high-voltage electrospinning technology has become the mainstream technology for the preparation of nanofiber materials due to its simplicity, versatility, easy manipulation, and low cost. Nanofibrous materials prepared by electrospinning technology have been widely studied and applied in textiles, filters, reinforcement materials, optoelectronic devices, catalysts, sensors, and biomedicine. At present, traditional electrospinning can only generate one jet with a single spinneret, and the output is only 0.02g / h (O.O.Dosunmu, G.G.Chase, W.Kataphinan and D.H.Reneker. Electrospinning of Polymer Nanofibers from Multiple Jets on a Porous Tubular Surface [J]. Nanotechnology, 2006, 17: 1123-1127), the efficiency is very low, an...

AI Technical Summary

Problems solved by technology

At present, most of them use standard injection spinning nozzles as nozzles, but it is relatively difficult to provide high-voltage power supply to each spinning nozzle in this way. It is common to provide high-voltage power supply uniformly by winding wires around each spinning nozzle. This method is cumbersome and inconvenient, especially impractical when dealing with a large number of spinning nozzles

Moreover, the multi-spinning nozzle system is adopted, and each jet has the whip instability similar to the electrospinning of a single spinning nozzle system, and electrostatic repulsion will also occur between the jets, causing the jet to tilt, increasing the jet instability. Stability, the spun nanofibers are not uniform, which affects the quality of the prepared nanofibers

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