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Journal of Porous Materials

, Volume 8, Issue 2, pp 159–165 | Cite as

Carbon Cloth Reinforced Carbon Aerogel Films Derived from Resorcinol Formaldehyde

  • J. Wang
  • M. Glora
  • R. Petricevic
  • R. Saliger
  • H. Proebstle
  • J. Fricke
Article

Abstract

Carbon cloth reinforced RF (Resorcinol Formaldehyde) aerogel films have been produced with extremely high RC ratio (molar ratio of resorcinol to catalyst) or with no catalyst at all. The gels were subcritically dried. Carbon aerogel films were obtained by pyrolysis of the RF aerogel films. The structure of the composite porous films was investigated using infrared spectrometer, optical and electron scanning microscope. The IR measurements indicated that the bottom surface reflectance of the films is higher than the top surface. The microscopical pictures revealed that the bottom surface of the films has a denser structure than the top surface, and the presence of carbon cloth in the sol-gel process strongly influences the structure of the films. The carbon cloth fibers act as catalytic sites. The particles are more likely to form around the fibers instead of within the sol. This leads to a somewhat reduced specific surface area as was shown via N2 sorption and BET analysis.Using the 4-probe method the electrical conductivity of the carbon cloth reinforced carbon films was found to be higher than that of pure carbon aerogel films.

carbon aerogels carbon cloth subcritical drying porous structure electrical conductivity 

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Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • J. Wang
    • 1
  • M. Glora
    • 2
  • R. Petricevic
    • 3
  • R. Saliger
    • 2
  • H. Proebstle
    • 2
  • J. Fricke
    • 2
  1. 1.Pohl Institute of Solid State PhysicsTongji UniversityShanghaiP.R. China
  2. 2.Physics InstituteUniversity of Wuerzburg, Am HublandGermany
  3. 3.Bavarian Center for Applied Energy Research (ZAE Bayern)WuerzburgGermany

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