| 摘要 |
Moldings of compressed graphite expandate are produced by producing planar pre-formed pieces (4) having a density of 0.01-0.2 g/cm 3> from graphite expandate (1) having a density of 2-20 g/l; stacking >=2 of the pre-formed pieces on top of each other; and bonding the pre-formed pieces under the influence of pressure into a single-piece molding (8), while compressing the graphite under the influence of the pressure to a density of 0.025-0.4 g/cm 3>. Independent claims are also included for: (1) a process for the conduction and exchange of heat, comprising conducting or exchanging heat with a molding produced by the inventive method; (2) a process for the storage of heat, comprising storing heat with the molding; and (3) a process for the production of a heat storage device, comprising producing planar pre-formed pieces having a density of 0.01-0.2 g/cm 3> from graphite expandate having a density of 2-20 g/l, coating upwardly-facing surfaces of the pre-formed pieces with particles of a heat-storing material while covering a maximum of 50% of the upwardly-facing surface of each pre-formed piece with particles of the heat-storing material, stacking >=2 of the pre-formed pieces on top of each other with the coated surface facing upward, laying an uncoated pre-formed piece onto the stack, bonding the pre-formed pieces under the influence of pressure into a single-piece molding while compressing the graphite under the influence of the pressure to a density of 0.025-0.4 g/cm 3>, and cutting the raw molding into the shape of a block. |
