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Effect of Beaded Fiber on the Structure and Properties of Electrospun Fiber Composite Filter Media
Received:May 01, 2021  
DOI：10.11980/j.issn.0254-508X.2021.09.002
Key Words:air filtration  composite filter media  elestrospinning  beaded fiber  filtration performance
Author NameAffiliationPostcode
LU Lili School of Light Industry and Engineering，South China University of Technology，Guangzhou，Guangdong Province，510640 510640
YU Jiao School of Light Industry and Engineering，South China University of Technology，Guangzhou，Guangdong Province，510640 510640
SUN Zhaoxia* School of Light Industry and Engineering，South China University of Technology，Guangzhou，Guangdong Province，510640 510640
TANG Min School of Light Industry and Engineering，South China University of Technology，Guangzhou，Guangdong Province，510640 510640
LIANG Yun School of Light Industry and Engineering，South China University of Technology，Guangzhou，Guangdong Province，510640 510640
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Abstract:In this study， the electrospun beaded fiber composite filter media and the electrospun nanofiber composite filter media were prepared， and the structure characteristics such as microscopic morphology and pore size， as well as filtration performance such as filtration resistance， filtration efficiency and dust holding capacity were analyzed.The results showed that the average fiber diameters of them was close， which was 225 nm and 250 nm， respectively. When the initial pressure drop of them was similar by controlling the spinning time， the filtration efficiency of the electrospun beaded fiber composite filter media was 73.1% and that of the electrospun nanofiber composite filter media was 38.2%. The resistance of the electrospun beaded fiber composite filter media rose slower than that of the electrospun nanofiber composite filter media. When reaching same terminal pressure drop， the electrospun beaded fiber composite filter media gained a longer lifetime as well as a greater dust holding capacity. The dust holding capacity of the electrospun beaded fiber composite filter media and electrospun nanofiber composite filter media was 119.29 g/m2 and 96.23 g/m2， respectively. The difference of resistance and dust loading capacity between the electrospun beaded fiber composite filter media and electrospun nanofiber composite filter media was analyzed by using simulation software GeoDict to build a model.
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