Carbon fiber reinforced prepreg of gas barrier properties, carbon fiber reinforced plastic and methods of producing the same

A method of producing a carbon fiber reinforced prepreg of gas barrier properties comprising:

• disposing a film material of gas barrier properties having a clay mineral with a plate-like crystal structure unidirectionally aligned and densely laminated, in at least one interlayer of a laminate of a carbon fiber reinforced prepreg comprising a sheet form carbon fiber reinforcement and a matrix resin;
• and then
• heating and/or pressurizing the laminate.

A carbon fiber reinforced plastic including a carbon fiber reinforcement and a matrix resin of gas barrier properties, comprising therein a gas barrier layer having a clay mineral with a plate-like crystal structure unidirectionally aligned and densely laminated.

A method of producing a carbon fiber reinforced plastic of gas barrier properties comprising:

• disposing a film material of gas barrier properties having a clay mineral with a plate-like crystal structure unidirectionally aligned and densely laminated, in at least one interlayer of a laminate of a carbon fiber reinforced prepreg comprising a carbon fiber reinforcement laid in a forming die and a matrix resin;
• and then
• mold-clamping the forming die and heating and/or pressurizing for forming.

A method of producing a carbon fiber reinforced plastic of gas barrier properties, comprising:

• disposing a film material of gas barrier properties having a clay mineral with a plate-like crystal structure unidirectionally aligned and densely laminated, in at least one interlayer of a laminate of a sheet form carbon fiber reinforcement laid in a forming die;
• and then
• molding by resin transfer molding or resin film infusion.

A method of producing a carbon fiber reinforced plastic of gas barrier properties, comprising:

• disposing, in a layer on the way of winding, a film material of gas barrier properties having a clay mineral with a plate-like crystal structure unidirectionally aligned and densely laminated, in winding and laminating on a mandrel a composite material comprising a carbon fiber reinforcement and a matrix resin by filament winding molding method;
• and then
• heating and curing the matrix resin.