| abstract |
Moulded articles are produced by heating expandable graphite, in which the expandable graphite is first pre-expanded at 140° to 450° C. until a bulk density of 30 to 500 g/l has been reached, at least 50% by volume of a mould is then filled with the graphite thus pre-expanded, and the expansion of the graphite is then completed in the mould by heating to temperatures in the range from 300° to 700° C. |