Compound annular electrode electrostatic spinning device

Abstract

The invention belongs to the technical field of electrostatic spinning equipment and relates to a compound annular electrode electrostatic spinning device. The main structure of the compound annular electrode electrostatic spinning device comprises a motor, a liquid brush, an insulating tape, a metal shaft, a metal annular electrode, micro-nano fibers, a metal collector, a high-voltage power supply negative electrode, an insulating pulley, a high-voltage power supply positive electrode, an insulating shaft, a high-voltage power supply, a liquid supply system, a distribution pipe, a connection substrate, a feeding rotary drum and a discharge rotary drum. The metal annular electrode is arranged on the metal shaft, and one end of the metal shaft is connected with the high-voltage power supply through the high-voltage power supply positive electrode; the insulating pulley is arranged on the insulating shaft, and the motor is in linkage with the insulating shaft, drives the insulating pulley to rotate and drives the metal annular electrode to rotate through the insulating tape; the distribution pipe is communicated with the liquid supply system, the liquid brush is arranged on an opening of the distribution pipe, the insulating tape penetrates through the liquid brush, the metal collector is located over the metal annular electrode, and the feeding rotary drum and the discharge rotary drum are arranged at two ends of the metal collector. The compound annular electrode electrostatic spinning device is simple in structure, reliable in principle, low in manufacturing cost, good in effect and environment-friendly, and conditions are easy to control.

Description

Technical field: [0001] The invention belongs to the technical field of electrospinning equipment, and relates to a compound ring electrode electrostatic spinning device for large-scale preparation of micro-nano fibers, which adopts a compound ring electrode fixed-point liquid supply method to realize rapid and large-scale preparation of electrostatic spinning micro-nano fibers. Background technique: [0002] At present, one of the main means of preparing continuous one-dimensional micro-nano fibers is electrospinning technology, which has good development prospects in the fields of filter materials, sound-absorbing and sound-absorbing materials, special protective clothing, electronic sensors, and textile engineering. Micro-nano fibers prepared by electrospinning have many characteristics such as large specific surface area and high porosity that are not possessed by fibers prepared by traditional stretching methods and melt-blown methods. Low, unable to meet the needs of i...

AI Technical Summary

Problems solved by technology

[0002] At present, one of the main means of preparing continuous one-dimensional micro-nano fibers is electrospinning technology, which has good development prospects in the fields of filter materials, sound-absorbing and sound-absorbing materials, special protective clothing, electronic sensors, and textile engineering. Micro-nano fibers prepared by electrospinning have many characteristics such as large specific surface area and high porosity that are not possessed by fibers prepared by traditional stretching methods and melt-blown methods. Low, unable to meet the needs of industrialization

The main means to increase the spinning yield in the prior art is the improved design of the spinning method, such as the array multi-nozzle electrospinning equipment disclosed in Chinese patent 200910031948.2 and the coaxial composite continuous micro / nano fiber multi-nozzle disclosed in Chinese patent 200310109222.9 Electrospinning devices improve spinning efficiency by increasing the number of spinneret heads; the bubble electrospinning device disclosed in Chinese patent 201210177134.1 utilizes explosive bubbles to generate multiple jets to achieve rapid preparation of electrospinning; Czech ELMARCO company The first generation of "nano spider" series equipment produced adopts cylindrical rotating electrode system and linear rotating electrode system, and increases the number of jets by increasing the contact area between the solution and the spinneret in one or two dimensions to increase the productivity ; The above disclosed technologies can theoretically realize the rapid production of electrospinning, but the actual application effect is not very good. The field is not optimistic; in the open design of the bubble electrospinning device and the first generation of "nano spider" series equipment, due to the high volatility of the spinning solution, it is impossible to effectively protect the solution in the liquid supply tank. As a result, the concentration of the solution and the diameter of the fiber in the process of electrospinning fibers change greatly with the time of electrospinning, resulting in differences in the performance of the same batch of products, and the electrodes used in the first generation of "nano spider" series equipment are immersed in the solution to be spun 100% utilization of the spinning solution cannot be realized. Although the second-generation "nano-spider" equipment produced by ELMARCO adopts a static linear electrode system design, which avoids the solvent volatilization of the spinning solution of the first-generation equipment, it still Failed to achieve effective improvement of spinning solution utilization and product performance

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