An electrospinning device and equipment with auxiliary airflow

Abstract

The invention discloses an electrostatic spinning device with auxiliary air flow and equipment thereof. A receiving electrode is positioned above a liquid storage tank; a rotary spinning roller is arranged in the liquid storage tank; an electrostatic spinning region is formed between a region where the receiving electrode is orthographically projected to the spinning roller and the receiving electrode; a plurality of through holes are uniformly formed in the spinning roller; an air spraying structure which is kept static is arranged in the spinning roller; an air spraying region of the air spraying structure corresponds to the electrostatic spinning region; the air spraying structure upwards sprays air flow; the air flow is blown into the electrostatic spinning region through the through holes. Under the matching between air flow blowing force and electrostatic force, electrostatic spinning is implemented; compared with the conventional roller type spinning, the electrostatic spinning device disclosed by the invention has the advantages that the yield is increased from 5 times to 10 times, and the spinning efficiency is greatly improved; furthermore, by the adoption of a liquid suction nozzle structure and a scraper structure, a spinning solution in the liquid storage tank is positioned in a sealed environment; therefore concentration change caused by volatilization of a solvent is avoided, and pollution caused by the volatilization of the spinning solution is prevented.

Description

technical field [0001] The invention relates to an electrostatic spinning device and equipment with auxiliary air flow. Background technique [0002] At present, electrospinning technology is the mainstream technology for preparing nanofibers. As early as 1934, Anton Fomhals had reported high-voltage electrostatic field spinning in the patent, which used a single-needle spinning device. However, the spinning efficiency of this single-needle spinning device is extremely low, and the production capacity of preparing nanofibers is usually only 0.001-0.01 g per minute. In order to improve the production efficiency of this spinning method, the successor has developed a multi-needle electrospinning device, usually combining dozens or even hundreds of individual needles for electrospinning. The spinning efficiency of a multi-needle electrospinning device can usually be increased to 0.1-1.0 g per minute. However, because the needle is prone to blockage, the cleaning and maintenan...

AI Technical Summary

Problems solved by technology

However, using the above methods, the impact on the increase in yield is not obvious, and the number of jets and the speed of nanofiber formation are not fundamentally increased.

Moreover, because the spinning solution is exposed to the air, a large amount of solvents will volatilize, which not only causes the concentration of the spinning solution to be unstable, but also forms a large amount of organic waste gas that is harmful to the human body and the environment, endangering the health of workers.

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