The Effect of Water-quenching on the Electrostatic Charging of Fibers and Fabrics during the Melt-blowing Process

Qin, Guo-wei; Tsai, Ping-Huei; Wadsworth, Larry C.

doi:10.1080/00405009908690625

Cited by 2 publications

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“…In 1999, a paper concerned the efficiency of electrostatic charging of water-sprayed fibers during the melt-blowing process was published. It was found that the charging efficiency was not affected by the water-spraying process if the amount of spraying was controlled 9 . In 2014, a paper in Korean was published about the melt-blown nonwoven filter for medical masks manufactured using an online triboelectric charging system 10 .…”

Section: Introductionmentioning

confidence: 99%

Triboelectric charging of melt-blown nonwoven filters with high filtration efficiency

Wang

2022

Sci Rep

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As a novel technology to convert low-frequency energy into electric power, the triboelectric nanogenerator is a hot research topic recently. However, the nature of charge carriers and their transfer mechanisms still remain poorly understood, especially for the cases of liquid–solid triboelectric nanogenerator. In this paper, charges produced by a triboelectric charging process were designed to provide melt-blown nonwoven fabrics with high filtration efficiency by making full use of the electrostatic attraction filtration mechanism. Influences of water conductivity and drying temperature on the filtration efficiency of melt-blown nonwoven fabrics were investigated. And the corresponding properties such as the surface charge potential and charge stability were analyzed by using the electrostatic voltmeter, bio atomic force microscope and thermally stimulated discharge technique. In addition, metal and inorganic elements in the masterbatch and water before and after triboelectric charging were measured in order to uncover the charge transfer mechanism. Melt-blown nonwoven fabrics with filtration efficiency as high as 96.8% was obtained through the triboelectric charging treatment by using water with the conductivity as low as 1.1 μS/cm for the first time. Negative and positive surface charge density appeared randomly on both sides of melt-blown nonwoven fabrics after the triboelectric charging treatment from the bio atomic force microscope measurement while only one kind of surface charge density can be achieved in the research of TENG, that is, negative or positive. It seems there are both electron and ion transfers during the triboelectric charging process and electron transfer seems to have more important contribution for the generation of charges.

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Section: Introductionmentioning

confidence: 99%

Triboelectric charging of melt-blown nonwoven filters with high filtration efficiency

Wang

2022

Sci Rep

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“…It was found that the charging efficiency was not affected by the water-spraying process if the amount of spraying was controlled. 7 In 2014, a paper in Korean was published about meltblown nonwoven fabric filters for medical masks by using an online hydro charging system. 8 The effects of the basis weight of meltblown nonwoven fabrics and die-to-collector distance on the filtration performance of meltblown nonwoven fabrics were investigated, while there was no deep discussion about the charge origin of the hydro charging treatment.…”

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confidence: 99%

Experimental and theoretical investigation of water-jet triboelectric charging of meltblown nonwoven fabrics

Wang

2022

Textile Research Journal

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The water-jet triboelectric charging technique has been widely used in China to improve the filtration efficiency of meltblown nonwoven fabric. However, there are few reports on research about water-jet triboelectric charging in the literature. In this paper, influences of the conductivity and pH of water on the filtration efficiency of meltblown nonwoven fabrics were investigated. The surface charge potential and its distribution of water-jet triboelectric charged meltblown nonwoven fabrics were characterized from microscopic and macroscopic aspects by using a bio atomic force microscope and electrostatic voltmeter. The charge stability was analyzed by using the thermally stimulated discharge technique. Meltblown nonwoven fabrics were water-jet triboelectric charged repeatedly in order to explore the charging mechanism. It is found that meltblown nonwoven fabrics with high filtration efficiency were developed by water-jet triboelectric charging treatment and the electrical conductivity of water had more influence than the pH on the filtration efficiency of triboelectric charged meltblown nonwoven fabrics. In addition, a possible mechanism of water-jet triboelectric charging is proposed based on experiments and characterizations.

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The Effect of Water-quenching on the Electrostatic Charging of Fibers and Fabrics during the Melt-blowing Process

Cited by 2 publications

References 0 publications

Triboelectric charging of melt-blown nonwoven filters with high filtration efficiency

Triboelectric charging of melt-blown nonwoven filters with high filtration efficiency

Experimental and theoretical investigation of water-jet triboelectric charging of meltblown nonwoven fabrics

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