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This study focuses on the development of a dual-layer coating system designed to enhance both fire resistance and weathering durability for cable protection in harsh environments. Perfluorooctanoic acid and epoxy monomer were esterified to prepare fluorinated epoxy monomer (FEP), and then cured with polyether amine D400 to prepare fluorinated epoxy resin (FEP-I). Together with fluorinated nano-silicon dioxide and polytetrafluoroethylene particles, the superhydrophobic and highly oleophobic coatings were spray. 5 wt% PFOA in FEP-I yielded optimal hydrophobicity (WCA = 91°). A2 coating (1:5 PTFE:F-SiO2) achieved balanced wettability/durability. Demonstrated multi-functionality: flame retardancy with corrosion/ice/fouling resistance. Dual-layer design extends service life in harsh environments.ed. and prepared. The conclusions are as follows: 5 wt% PFOA in FEP-I yielded optimal hydrophobicity (WCA = 91°). A2 coating (1:5 PTFE:F-SiO2) achieved balanced wettability/durability. Demonstrated multi-functionality: flame retardancy + corrosion/ice/fouling resistance. Dual-layer design extends service life in harsh environments. The base layer consists of an intumescent fireproof coating to provide flame retardancy, while the top layer is a fluorinated epoxy-based superhydrophobic coating to ensure water resistance and long-term durability.

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A Highly Oleophobic Superhydrophobic Coating Based on a Fluorinated Epoxy Resin for Fire-Proof Self-cleaning Applications in Electrical Cables

  • 会议论文

  • 发表日期：

    2026年

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  • Jiaqing Zhang,
  • Lingxin He,
  • Yi Guo,
  • Jie Huang,
  • Xia Zhou

摘要

This study focuses on the development of a dual-layer coating system designed to enhance both fire resistance and weathering durability for cable protection in harsh environments. Perfluorooctanoic acid and epoxy monomer were esterified to prepare fluorinated epoxy monomer (FEP), and then cured with polyether amine D400 to prepare fluorinated epoxy resin (FEP-I). Together with fluorinated nano-silicon dioxide and polytetrafluoroethylene particles, the superhydrophobic and highly oleophobic coatings were spray. 5 wt% PFOA in FEP-I yielded optimal hydrophobicity (WCA = 91°). A2 coating (1:5 PTFE:F-SiO2) achieved balanced wettability/durability. Demonstrated multi-functionality: flame retardancy with corrosion/ice/fouling resistance. Dual-layer design extends service life in harsh environments.ed. and prepared. The conclusions are as follows: 5 wt% PFOA in FEP-I yielded optimal hydrophobicity (WCA = 91°). A2 coating (1:5 PTFE:F-SiO2) achieved balanced wettability/durability. Demonstrated multi-functionality: flame retardancy + corrosion/ice/fouling resistance. Dual-layer design extends service life in harsh environments. The base layer consists of an intumescent fireproof coating to provide flame retardancy, while the top layer is a fluorinated epoxy-based superhydrophobic coating to ensure water resistance and long-term durability.