Atmospheric air dielectric barrier discharge excited by nanosecond pulse and AC used for improving the hydrophilicity of aramid fibers

Hao YUAN (袁皓); Wenchun WANG (王文春); Dezheng YANG (杨德正); Zilu ZHAO (赵紫璐); Li ZHANG (张丽); Sen WANG (王森)

doi:10.1088/2058-6272/aa8766

Plasma Science and Technology > 2017 > 19(12): 125401. > DOI: 10.1088/2058-6272/aa8766

Hao YUAN (袁皓), Wenchun WANG (王文春), Dezheng YANG (杨德正), Zilu ZHAO (赵紫璐), Li ZHANG (张丽), Sen WANG (王森). Atmospheric air dielectric barrier discharge excited by nanosecond pulse and AC used for improving the hydrophilicity of aramid fibers[J]. Plasma Science and Technology, 2017, 19(12): 125401. DOI: 10.1088/2058-6272/aa8766

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Atmospheric air dielectric barrier discharge excited by nanosecond pulse and AC used for improving the hydrophilicity of aramid fibers

Key Lab of Materials Modification, Dalian University of Technology, Ministry of Education, Dalian 116024, People’s Republic of China

Funds: This work is supported by National Natural Science Foundation of China (Grant Nos. 51377014, 51407022 and 51677019), and the National Key Research and Development program of China (2016YFC0207200).

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Received Date: June 12, 2017

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Abstract

Abstract

In this paper, a long line-shape dielectric barrier discharge excited by a nanosecond pulse and AC is generated in atmospheric air for the purpose of discussing the uniformity, stability and ability of aramid fiber treatment. The discharge images, waveforms of current and voltage, optical emission spectra, and gas temperatures of both discharges are compared. It is found that nanosecond pulsed discharge has a more uniform discharge morphology, higher energy efficiency and lower gas temperature, which indicates that nanosecond pulsed discharge is more suitable for surface modification. To reduce the water contact angle from 96° to about 60°, the energy cost is only about 1/7 compared with AC discharge. Scanning electron microscopy, Fourier transform infrared spectroscopy and x-ray photoelectron spectroscopy are employed to understand the mechanisms of hydrophilicity improvement.
- aramid fiber,
- dielectric barrier discharge,
- FT-IR,
- optical emission spectra surface modification

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References (34)

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