CARBON FIBER REINFORCED PREPREG HAVING GAS BARRIER PROPERTIES AND CARBON FIBER REINFORCED PLASTIC, AND PROCESSES FOR PRODUCING THEM

摘要

This invention provides a carbon fiber reinforced prepreg having gas barrier properties comprising a sheet-shaped carbon fiber reinforcing material and a matrix resin, wherein the carbon fiber reinforced prepreg comprises a gas barrier layer, in which a clay mineral having a plate-like crystal structure is unidirectionally aligned and densely stacked, provided within the prepreg, and a carbon fiber reinforced plastic produced from the carbon fiber reinforced prepreg. The prepreg is produced, for example, by placing a film having gas barrier properties, in which a clay mineral having a plate-like crystal structure is unidirectionally aligned and densely stacked, in at least one interlayer part in a laminate of a carbon fiber reinforced prepreg comprising sheet-shaped carbon fiber reinforced material and matrix resin and then heating and/or pressing the laminate. The carbon fiber reinforced composite material has a high level of gas barrier properties, particularly hydrogen gas barrier properties.