LOW-TEMPERATURE THERMAL-CONDUCTIVITY OF A RETICULATED GLASSY-CARBON

The thermal conductivity of an interconnected filamentary (reticulated) glassy carbon has been measured between 0.1 and 100 K. The conductivity of the reticulated structure at 4 K is a factor of 1000 smaller than other rigid construction materials typically used for cryogenic thermal isolation. However, the intrinsic thermal conductivity of the individual filaments of the reticulated structure is identical to that of other glassy carbons, depending only on the temperature of pyrolysis.