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<p>This study rapidly prepared inorganic fiber-reinforced organic silicon aerogels by screening four types of inorganic fibers and their concentrations. The results showed that optimal fiber dispersion was achieved at a 5% fiber content. By optimizing the sol pH and gelation time, the adverse effects of fiber sedimentation on performance were effectively mitigated. The glass fiber-reinforced aerogel exhibited the best performance, with a density of 48.3&#xa0;kg/m<sup>3</sup>, compressive strength of 2.48&#xa0;MPa, contact angle of 165°, and thermal conductivity of 0.0343&#xa0;W/(m·K). The diameter, modulus, and dispersibility of the fibers were identified as key factors influencing aerogel performance. This study provides a new method for the rapid preparation of high-performance thermal insulation materials, addressing the limitations of traditional methods and laying the foundation for large-scale applications.</p>

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Preparation and Performance Investigation of Inorganic Fiber-Reinforced Organic Silicon Aerogels (FSA)

  • 期刊论文

  • 发表日期：

    2025年10月28日

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  • Xingzhou Yu,
  • Mingxue Wang,
  • Fuxiao Xu,
  • Bo Yao

摘要

This study rapidly prepared inorganic fiber-reinforced organic silicon aerogels by screening four types of inorganic fibers and their concentrations. The results showed that optimal fiber dispersion was achieved at a 5% fiber content. By optimizing the sol pH and gelation time, the adverse effects of fiber sedimentation on performance were effectively mitigated. The glass fiber-reinforced aerogel exhibited the best performance, with a density of 48.3 kg/m3, compressive strength of 2.48 MPa, contact angle of 165°, and thermal conductivity of 0.0343 W/(m·K). The diameter, modulus, and dispersibility of the fibers were identified as key factors influencing aerogel performance. This study provides a new method for the rapid preparation of high-performance thermal insulation materials, addressing the limitations of traditional methods and laying the foundation for large-scale applications.