High-pressure tank with permeation barrier

摘要

The present invention relates to a high-pressure tank made from fiber-reinforced plastic for, in particular, gaseous media, wherein, on its inner wall, the tank is equipped completely or partially with a substantially permeation-tight foil made of metal, wherein the metal has a high elastic range and a low thermal expansion coefficient, and the foil has a thickness of ≦0.5 mm. The invention also relates to a method for manufacturing tanks of this type.

主权项

1. A process for manufacturing a high-pressure tank made of fiber-reinforced plastic for receiving gaseous media comprising:
mounting a substantially permeation-tight metal foil comprising a first end area and a second end area on a net shaped core by joining the first and second end areas of the metal foil on the core to match the shape of the net shaped core; contacting the surface of the foil not in contact with the net shaped core with a fiber composite material; hardening the fiber composite material to adhesively bond the surface of the metal foil to the fiber composite material, wherein the metal foil forms an inner surface of the high-pressure tank and the fiber composite material forms an outer surface of the high-pressure tank; and thereafter removing the core after hardening of the fiber composite material, wherein the metal foil has a high elastic range and a low thermal expansion coefficient, wherein the metal is selected from the group consisting of 7020 T6, 7075 T6, 1.3974 (full austenitic CrNi-steel), Thermosetting CrNi-steel (A286), CuBe, Ni-Span C-902, Inconel 903, Inconel 718, Unalloyed Ti, Ti-5-2,5 (α), Ti-3-2,5 (α+β), Ti-6-4 (α+β), Ti-15-3-3-3 (β), and Beta 21 S (β), wherein the foil has a thickness of ≦0.5 mm, and wherein the foil is contactable by an internal content of the tank.