The invention provides a high-filling-power carbon-carbon heat-preservation hard felt and a preparation method thereof, and relates to the technical field of carbon
fiber heat-preservation felts.The preparation method comprises the following steps that (a) double-face glue spraying is conducted on a shaped carbon
fiber net through double-net clamping type glue spraying equipment, then residual glue on the carbon
fiber net is removed to control the glue content, and the carbon fiber net is obtained; then part of the
solvent on the carbon fiber net is dried and removed through a
radiation type
drying device, then the remaining
solvent on the carbon fiber net is dried and removed through a hot air penetrating type
drying oven, meanwhile, the glue is subjected to cross-linking curing, and a reinforced carbon fiber net is obtained; (b) the reinforced carbon fiber net is sequentially subjected to layering
hot pressing and
carbonization treatment, and the carbon-carbon heat preservation hard felt is obtained. The carbon-carbon heat-preservation hard felt solves the technical problem that an existing carbon-carbon heat-preservation hard felt is poor in heat-preservation performance due to the fact that the number of
heat transfer channels is large, and the technical effects that the
heat transfer channels are greatly reduced, the
porosity is improved, the heat
conductivity coefficient is effectively reduced, and therefore the heat-preservation performance of the carbon-carbon heat-preservation hard felt is improved are achieved.