Journal
NANOMATERIALS
Volume 7, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/nano7020044
Keywords
silica aerogel nanocomposites; sol-gel synthesis; ambient pressure drying; supercritical drying; fibers reinforcement
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Funding
- [01/11/DSPB/0807]
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The presented paper contains a brief review on the synthesis and characterization of silica aerogels and its nanocomposites with nanofibers and fibers based on a literature study over the past twenty years and my own research. Particular attention is focused on carbon fiber-based silica aerogel nanocomposites. Silica aerogel is brittle in nature, therefore, it is necessary to improve this drawback, e.g., by polymer modification or fiber additives. Nevertheless, there are very few articles in the literature devoted to the synthesis of silica aerogel/fiber nanocomposites, especially those focusing on carbon fibers and nanofibers. Carbon fibers are very interesting materials, namely due to their special properties: high conductivity, high mechanical properties in relation to very low bulk densities, high thermal stability, and chemical resistance in the silica aerogel matrix, which can help enhance silica aerogel applications in the future.
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