Journal
CARBON
Volume 183, Issue -, Pages 525-529Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2021.07.027
Keywords
Carbon aerogel; Composite; Ambient pressure drying; Hyper-elastic; Ultrahigh temperature thermal insulation
Funding
- National Natural Science Foundations of China [U20A20242, 52022101, 51802313, 51902315]
- Liaoning Revitalization Talents Program
- Research Fund of Youth Innovation Promotion Association of CAS, China [Y201830, 2021190]
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Monolithic carbon aerogel composites with low density were prepared from phenolic resin as a reactive precursor and ultralight and hyper-elastic carbon fiber felt as a soft reinforcement by a low-cost ambient pressure drying approach. The obtained composite showed low density, high compressive strength, extremely low thermal conductivity, and outstanding ultrahigh temperature thermal insulation performance.
Monolithic carbon aerogel composites with low density have been prepared from phenolic resin as a reactive precursor and ultralight and hyper-elastic carbon fiber felt as a soft reinforcement by a low-cost ambient pressure drying approach. During carbonization, the felt shrinks collaboratively with the phenolic aerogel so that the typical shrinkage mismatch between fibers and matrix can be overcome. Therefore, a robust, crack-free and large-size carbon fiber reinforced carbon aerogel composite was obtained, which has a low density (0.16 g cm(-3)), high compressive strength (0.93 MPa), extremely low thermal conductivity (0.03 Wm(-1)K(-1)) and outstanding ultrahigh temperature thermal insulation performance. (C) 2021 Elsevier Ltd. All rights reserved.
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