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In order to meet the increasing demand for nanofibers and overcome the disadvantages of traditional electrospinning technology, it is necessary to research an electrospinning device that can produce nanofibers efficiently. In this paper, a free surface electrospinning device was improved, and a spherical section free surface electrospinning device was developed to prepare high-quality polyacrylo-nitrile nanofibers in batches. Meanwhile, MAXWELL 3-D software was used to simulate the electric field distribution of the spherical section free surface electro-spinning with solution reservoirs of different spherical radii. The influence of the spherical radius on the spinning effect was analyzed to study the spinning mechanism. The results showed that when the applied voltage was 40 kV, the electric field distribution of the spherical section free surface electrospinning with a larger spherical radius was more uniform, the nanofiber diameter was larger, the nanofiber diameter distribution was more uniform, and the yield of nanofibers was higher. When the spherical radius was 75 mm, the quality of nanofibers was better, and the yield could reach the maximum value of 14.35 g per hour, due to its higher average electric field intensity and uniform electric field distribution.
PAPER REVISED: 2021-03-18
PAPER ACCEPTED: 2021-03-18
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THERMAL SCIENCE YEAR 2022, VOLUME 26, ISSUE Issue 3, PAGES [2527 - 2534]
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© 2023 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence