| abstract |
low permeation flexible fuel hose the present invention relates to a flexible hose or pipe that has a polyamide barrier layer 6 that has an impact modifier, and / or branched molecular structure, a bending module of 1 to 2 gpa and / or a strain elongation of 100% or more. the hose may have additional layers, such as an inner tube of hnbr rubber, an outer cover of evm / cpe rubber mixture, a reinforcement of fabric or thread, or the like. the permeability to biofuels b20 containing ethanol and methanol is very low. |