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August 16, 2026High VoltageOpen Access

Thermal Stability of Plasma‐Assisted Film Deposition for Insulation Modification: In View of Hydrophobicity and Flashover Performances

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Authors

XZXi ZhuLWLiyan WangXGXiuhan Guan

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Overview

Experimental study demonstrates enhanced thermal stability and flashover resistance in plasma-coated polymethyl methacrylate insulation, highlighting a durable alternative to conventional coatings.

Key Points

  • To evaluate the thermal stability, hydrophobic retention, and flashover performance of atmospheric pressure plasma-deposited silicon coatings on polymethyl methacrylate insulation.
  • Deposited cross-linked silicon-containing films onto polymethyl methacrylate (PMMA) substrates using atmospheric pressure plasma with hexamethyldisiloxane (HMDSO) and a fluorescent agent.
  • Conducted accelerated aging tests to monitor surface chemical transitions, hydrophobic stability, and flashover voltage degradation over time.
  • Plasma-modified PMMA maintained stable surface hydrophobicity throughout accelerated aging.
  • Aged plasma-treated specimens retained a higher flashover voltage compared to pristine, untreated PMMA despite age-related degradation.
  • The silicon-containing film converted thermal-oxidative degradation into a self-crosslinking mechanism through a chemical group transition from -SiO2 to -SiO4.

Cite This Study

Zhu et al. (2026) studied this question.

synapsesocial.com/papers/6a81799af2fb91fc834acd08https://doi.org/10.1049/hve2.70237
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