High pressure hoses for the delivery of hydrogen or gasoline
AssigneeContiTech Deutschland GmbH
InventorsLance Miller, Steffen Wietzke, Stefan Krause, Alexander Schmidt
Life of this patent
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Abstract
Hoses with a burst pressure of at least 5.5 bar, wherein the hose has a layered structure with an inner barrier layer of a blend of ethylene vinyl alcohol copolymer and an aliphatic polyketone, at least one reinforcement layer and optionally an outer layer formed from a polymeric material. Such high pressure hoses are characterized by a very favorable property profile for use with hydrogen at high pressures. Also provided are methods for manufacturing such hoses, tank filling devices equipped with such hoses, and uses of corresponding high-pressure hoses for transferring hydrogen from a storage container to a tank.
Claims15
A reinforced hose having a burst pressure of at least 5.5 bar, wherein the hose has a layered structure comprising an inner barrier layer, at least one strength-bearing layer and optionally an outer layer formed from a polymeric material, and wherein the inner barrier layer is formed from a blend of ethylene vinyl alcohol copolymer and an aliphatic polyketone of the formula
- wherein R1 and R2 are different from each other and independently represent hydrogen or a C1-C12 alkyl group, n+m=1, and p is an integer, and wherein the two comonomers are randomly distributed or present as blocks.
A method comprising:
- providing a blend of an ethylene vinyl alcohol copolymer and an aliphatic polyketone of the formula
- wherein R1 and R2 are different from each other and independently represent hydrogen or a C1-C12 alkyl group, n+m=1, and p is an integer, and wherein the two comonomers are randomly distributed or blocked, and
- using the blend as a barrier layer material in a hose for transporting fluids or compressed gases, preferably in the form of hydrogen having a density of at least 24 kg/m3 and in particular in the range of 35 to 45 kg/m3, or as a liner in a tank for storage of respective gases.
Dependencies are inferred from the claim text.