BISPHENOLICALLY CROSS-LINKED AND ACID-RESISTANT FLUORINATED RUBBER BLEND, AND A TUBE THAT CONVEYS AN ACIDIC MEDIUM, PARTICULARLY A DIESEL PARTICULATE FILTER TUBE OR A PRESSURE DIFFERENTIAL TUBE

摘要

The invention relates to a tube (1) which conveys an acidic medium and has at least the following layer structure: an inner layer (2) which acts as a barrier layer to said acidic medium and consists of a bisphenolically cross-linked fluorinated rubber blend that contains Ca(OH)2 as an activator and acid scavenger; and an outer layer (5) consisting of a cross-linked rubber blend. In particular, the tube also comprises a strengthening support layer (4) with a single-layered or multi-layered design, arranged between said inner layer (2) and outer layer (5). The claimed tube is characterised in that the fluorinated rubber blend of the inner layer (2) contains no MgO, and in that the quantity of Ca(OH)2 is no greater than 5 phr. In addition, the invention relates to a bisphenolically cross-linked and acid-resistant fluorinated rubber blend, regardless of the purpose of its use.