| 摘要 |
<p>The extruded, injection-moulded, or blow-moulded plastic pipe used to assemble pipelines, with a pipe body (1) that is built up from at least three layers, is characterized in that the interior layer (2) and the middle layer (4) are of a polymer material in which amorphous areas of the partially crystalline polymer used for the interior layer (2) that is in contact with the medium that is to be moved, and/or the middle layer (4) incorporate additives against aggressive media, in particular oxidizing and reducing media; and in that fillers and/or additives are incorporated into the amorphous areas of the polymer material used for the middle layer (4) to act as barriers substances to reduce migration of the additives from the interior layer (2) into the exterior layer (3) of the pipe.</p> |
