Ultralight and thermal insulation carbon foam/SiO2 aerogel composites

  • Yang Liu
  • Zhaofeng ChenEmail author
  • Junxiong Zhang
  • Sufen Ai
  • Hao Tang


In this study, carbon foam (CF) and SiO2 aerogel composite were prepared by the sol–gel method under a circumstance of the atmospheric drying process. The Pyrolysis mechanism of carbon foam was investigated through thermal gravimetric analysis and Fourier transform infrared spectroscopy (FTIR). Carbon foam having ultralight properties with a density of 5.44 kg/m3, functions as a skeleton to support the composite. The maximum compressive stress measured for CF/SiO2 aerogel composite was about 1.0 MPa. At room temperature, the measured thermal conductivities of the CF and CF/SiO2 aerogel composite were 0.035 W/m K and 0.024 W/m K, while at 300 °C, it was reported to be 0.120 W/m K and 0.057 W/m K. Aerogel filled in carbon foam cells have significantly reduced the gaseous thermal conductivity of the prepared composite.


Carbon foam SiO2 aerogel Composite Thermal conductivity 



The present work was supported by the National Natural Science Foundation of China (Grant No. 51772151) and Jiangsu R&D project (Grant No. BE2017054). This work was also supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions.


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Authors and Affiliations

  1. 1.International Laboratory for Insulation and Energy Efficiency Materials, College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjingPeople’s Republic of China
  2. 2.Beijing SpacecraftsChina Academy of Space TechnologyBeijingPeople’s Republic of China

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