Hydrophobicity changes of polluted silicone rubber introduced by spatial and dose distribution of plasma jet

Shuang LI; Xinzheng GUO; Yongqiang FU; Jianjun LI; Ruobing ZHANG

doi:10.1088/2058-6272/ac57ff

Plasma Science and Technology > 2022 > 24(4): 044006. > DOI: 10.1088/2058-6272/ac57ff

Shuang LI, Xinzheng GUO, Yongqiang FU, Jianjun LI, Ruobing ZHANG. Hydrophobicity changes of polluted silicone rubber introduced by spatial and dose distribution of plasma jet[J]. Plasma Science and Technology, 2022, 24(4): 044006. DOI: 10.1088/2058-6272/ac57ff

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Hydrophobicity changes of polluted silicone rubber introduced by spatial and dose distribution of plasma jet

Engineering Laboratory of Power Equipment Reliability in Complicated Coastal Environments, Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, People’s Republic of China

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Author Bio:
Ruobing ZHANG, E-mail: zhangrb@sz.tsinghua.edu.cn
Received Date: October 30, 2021
Revised Date: February 21, 2022
Accepted Date: February 22, 2022
Available Online: December 15, 2023
Published Date: April 10, 2022

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Abstract

Abstract

The hydrophobicity of polluted silicone rubber was improved rapidly under plasma jet treatment. It is an important phenomenon of the interaction between the plasma jet and the porous surface, and shows a wide application prospect in the power system. In this process, the spatial characteristics and dose of plasma jet are very important. Therefore, the variation of hydrophobicity of polluted silicone rubber under plasma jet treatment was studied, and the spatial characteristics and dose of plasma jet on polluted silicone rubber were also investigated in the work. The results show that the surface property (hydrophilic or hydrophobic) depended on the dose of plasma applied to the surface. The effective treated area was a circle, and the contact angles changed along the radial direction of the circle. This was attributable to the diffusion of plasma bullets on the surface and the distribution of plasma species. The plasma dose could be characterized by the energy density of the plasma applied on the surface. With the increase of plasma dose, the surface contact angles first increased rapidly and then decreased gradually.
- plasma jet,
- polluted silicone rubber,
- hydrophobicity,
- plasma dose,
- energy density,
- spatial distribution

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Acknowledgments

The work was supported by the Intergovernmental International Cooperation in Science and Technology Innovation Program (No. 2019YFE0115600), National Natural Science Foundation of China (No. 52177152), and Science, Technology and Innovation Commission of Shenzhen Municipality (No. JCYJ20180508152057527).

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