Multilayer with both good aging properties at high temperature conditions and resistance to explosion, which can be used for high temperature power vehicle applications

摘要

The present invention provides for fluids such as air, oil, water, urea solutions, cooling solutions of glycols, converter oil coolants (TOC), or air conditioning liquids, or fuels such as gasoline, especially bio-gasoline or diesel, especially bio-diesel A multi-layer tubular structure (MLT) for transporting, comprising at least one layer (1) and at least one layer (2), wherein the layer (1) is at least 50% by weight of the formula W/ZT At least one semi-aromatic polyamide, -b) at least 10% by weight, preferably at least 15% by weight of impact modifier, -c) 0 to 20% by weight of at least one plasticizer, -d) 0 to 40% by weight % Comprising at least one additive and a) + b) + c) + d) with a total composition of 100%, wherein layer (2) is -a') at least 50% by weight, (A) And at least one short-chain semi-crystalline polyamide represented by formula XY/Z or formula V/Z, -b') 0 to 15% by weight of at least one impact modifier, -c') 0 to 12% by weight Multi-layered tubular comprising at least one plasticizer, -d') 0 to 40% by weight of at least one additive and a total composition of a') + b') + c') + d') is 100% Structure (MLT).