Technical Textiles

Non-combustible, flexible and lightweight – a new high-performance material based on basalt fibre polymer composites

By K. Trommer, Forschungsinstitut für Leder- und Kunststoffbahnen GmbH, Freiberg, und T. Mader, Fulcoline GmbH & Co. KG, Fulda

Introduction. Currently, no flexible composite materials are available which can be manufactured and processed similar to tarpaulin materials in a roll-to-roll process and which meet the strict fire test criteria of construction material class A2, according to the standard EN 13501-1. This standard classifies material class A into A1 (without combustible parts) and A2 (with combustible parts to a small extent). For a material to be categorised into construction material class A2, it should survive a series of tests as specified in the test standard EN 13501-1. These include determination of the gross heat of combustion according to DIN EN ISO 1716 or DIN EN ISO 1182, thermal stress by single burning item (SBI) according to EN 13823 and burning behaviour according to EN ISO 9239, which is meant for floorings. Compared to the national classification standard (DIN 4102-1), the European classification standard of construction materials (DIN EN 13501-1) comprises a larger spectrum of classes, as the side effects of fires such as smoke emission and dripping of burning droplets are also taken into account. On grounds of higher safety, it is important for the new high-performance composites to comply with the class A2 – s1 d0 in DIN EN 13501-1 relating to burning behaviour. This class corresponds to DIN 4102-1 A2, which means that there is no or hardly any emission of smoke (s1) and no dripping of burning droplets (d0).

Forschungsinstitut für Leder und Kunststoffbahnen gGmbH (FILK) D-509599 Freiberg www.filkfreiberg.de