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Carbon foams were prepared from AR pitch in a high pressure/high temperature reactor under different heating conditions. Their pore structure, bulk density, porosity, compressive strength, thermal conductivity, and crystallite size parameters were measured. Foams produced using a long time at a constant foaming temperature exhibit bigger pore size (412 nm), higher porosity (83.82%), lower bulk density...
Carbon foams were prepared from coal tar pitch, petroleum mesophase pitch, and AR pitch. The molecular weights of the precursors were determined by gel permeation chromatography. Foam structure, average pore diameter and pore diameter distribution were investigated by scanning electron and optical microscopy. It was found that coal tar pitch could not be used as-received to prepare useful carbon foams...
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