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<p>This work proposes a process for the fabrication of a thermal insulation and flame-retardant silica aerogel composites coating. First, the silica aerogel was&#xa0;prepared by a simple experimental Soxhlet extraction method to minimize handling of the sample by the operator, while also providing excellent thermal insulation owing to three-dimensional network structures. The highest specific surface area of silica aerogel fabricated by the Soxhlet extraction method was 740.4&#xa0;m<sup>2</sup>/g. Meanwhile, the silica aerogels obtained from the Soxhlet extraction method enabled thermal conductivity as low as 25.13&#xa0;mW/m·K. The properties of silica aerogel prepared by the Soxhlet extraction method were better than those of the&#xa0;silica aerogels obtained from the static method and commercial aerogel. Subsequently, the silica aerogel composites coating (20SAC) not only had good tensile strength and plasticity but also had&#xa0;excellent thermal insulation performance. Furthermore, silica aerogel composites coating was found to exhibit an&#xa0;excellent flame-retardant property. The present work provides a viable way for developing silica aerogel composites coating with thermal insulation and flame-retardant properties.</p>

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Thermal insulation and flame-retardant properties of silica aerogel composites coating

  • 期刊论文

  • 发表日期：

    2025年7月14日

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  • Zhen Chen,
  • Linfeng Wei,
  • Dashuai Yan,
  • Hanwei Zhang,
  • Xiaobang Liu,
  • Wenjuan Zhang,
  • Longshi Qiu,
  • Xiaogang Hu,
  • Pan Xue

摘要

This work proposes a process for the fabrication of a thermal insulation and flame-retardant silica aerogel composites coating. First, the silica aerogel was prepared by a simple experimental Soxhlet extraction method to minimize handling of the sample by the operator, while also providing excellent thermal insulation owing to three-dimensional network structures. The highest specific surface area of silica aerogel fabricated by the Soxhlet extraction method was 740.4 m2/g. Meanwhile, the silica aerogels obtained from the Soxhlet extraction method enabled thermal conductivity as low as 25.13 mW/m·K. The properties of silica aerogel prepared by the Soxhlet extraction method were better than those of the silica aerogels obtained from the static method and commercial aerogel. Subsequently, the silica aerogel composites coating (20SAC) not only had good tensile strength and plasticity but also had excellent thermal insulation performance. Furthermore, silica aerogel composites coating was found to exhibit an excellent flame-retardant property. The present work provides a viable way for developing silica aerogel composites coating with thermal insulation and flame-retardant properties.