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<p>Medium-density fiberboard (MDF) is highly susceptible to degradation from moisture and chemicals due to the inherent vulnerability of its wood fibers and urea–formaldehyde resin. To mitigate this, we developed a dielectric barrier discharge (DBD) plasma process to deposit a robust, hydrophobic polydimethylsiloxane (PDMS)-like coating on MDF surfaces. A modified three-electrode DBD system, optimized for wood-based materials and operating at 693.5&#xa0;Hz with a 50% duty cycle, was employed. We systematically investigated the effects of processing time, discharge power, and hexamethyldisiloxane (HMDSO) precursor concentration on coating performance. The optimal treatment achieved a water contact angle of 142° after 20&#xa0;min, confirming the formation of a highly hydrophobic, silicon-based layer. Analysis of surface morphology and chemical composition revealed the uniform deposition of PDMS-like films. This study not only demonstrates a highly effective method for creating moisture-resistant MDF but also underscores the potential of tailored atmospheric pressure plasma as a versatile tool for sustainable wood product manufacturing.</p>

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Surface Texturing of Medium-Density Fiberboard (MDF) Using Atmospheric Plasma for Enhanced Hydrophobicity

  • 期刊论文

  • 发表日期：

    2025年11月9日

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  • M. Khodabakhshi Palandi,
  • F. Sohbatzadeh,
  • Z. Mahmoudsani

摘要

Medium-density fiberboard (MDF) is highly susceptible to degradation from moisture and chemicals due to the inherent vulnerability of its wood fibers and urea–formaldehyde resin. To mitigate this, we developed a dielectric barrier discharge (DBD) plasma process to deposit a robust, hydrophobic polydimethylsiloxane (PDMS)-like coating on MDF surfaces. A modified three-electrode DBD system, optimized for wood-based materials and operating at 693.5 Hz with a 50% duty cycle, was employed. We systematically investigated the effects of processing time, discharge power, and hexamethyldisiloxane (HMDSO) precursor concentration on coating performance. The optimal treatment achieved a water contact angle of 142° after 20 min, confirming the formation of a highly hydrophobic, silicon-based layer. Analysis of surface morphology and chemical composition revealed the uniform deposition of PDMS-like films. This study not only demonstrates a highly effective method for creating moisture-resistant MDF but also underscores the potential of tailored atmospheric pressure plasma as a versatile tool for sustainable wood product manufacturing.