Journal of Sol-Gel Science and Technology

, Volume 63, Issue 3, pp 445–456

Engineering thermal and mechanical properties of flexible fiber-reinforced aerogel composites

  • Yundan Liao
  • Huijun Wu
  • Yunfei Ding
  • Shuai Yin
  • Moran Wang
  • Anmin Cao
Original Paper

DOI: 10.1007/s10971-012-2806-7

Cite this article as:
Liao, Y., Wu, H., Ding, Y. et al. J Sol-Gel Sci Technol (2012) 63: 445. doi:10.1007/s10971-012-2806-7

Abstract

Flexible aerogel was successfully supported onto 4-layer-aligned glass fibers through impregnation, followed by drying at atmospheric pressure. The prepared nanocomposites can achieve a low thermal conductivity of 0.026 W/(m·K), which holds great promising for their use in thermal insulation applications. By choosing different designs of the four fiber layers, in the terms of LLLL, LTLL, LLTT, LTLT, LTTL and LTTT, the laminated structures of aerogel composites can be accordingly controlled. Further microstructure characterization of the composites revealed the homogeneous dispersion of nanoporous structure through the aerogel matrix, as well as highly-aligned fibers to reinforce the structure. Detailed investigation on the thermal and mechanical properties of the prepared fiber-aerogel composites showed that their performances were highly related to the laminated design of fiber layers. The introduction of fibers as the backbone of the aerogel and the suitable design of their laminated structure can greatly improve the mechanical properties of the aerogel composites while maintaining a low thermal conductivity.

Keywords

Aerogel composite Fiber alignment Mechanical properties Thermal insulation 

Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • Yundan Liao
    • 1
  • Huijun Wu
    • 1
  • Yunfei Ding
    • 1
  • Shuai Yin
    • 1
  • Moran Wang
    • 2
  • Anmin Cao
    • 3
  1. 1.College of Civil EngineeringGuangzhou UniversityGuangzhouChina
  2. 2.School of AerospaceTsinghua UniversityBeijingChina
  3. 3.Institute of ChemistryChinese Academy of SciencesBeijingChina

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