INTERIOR TRAIN COMPONENTS HAVING LOW SMOKE AND LOW HEAT RELEASE, AND METHODS OF THEIR MANUFACTURE

摘要

Interior railway components (seat components and claddings) comprise a thermoplastic composition comprising: a first polymer comprising bisphenol A carbonate units and monoaryl arylate units, or a second polymer comprising bisphenol A carbonate units, monoaryl arylate units, and siloxane units, or a combination comprising at least one of the foregoing; and a polyetherimide; wherein a sample of the thermoplastic composition has: a smoke density after 4 minutes (Ds-4) of ≦̸150 measured in accordance with ISO 5659-2 on a 3 mm thick plaque, an integral of the smoke density as a function of time up to 4 minutes (VOF4) ≦̸300 measured in accordance with ISO 5659-2, a maximum average heat release (MAHRE) of ≦̸300 90 kW/m2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque, and a ductility in multiaxial impact of 80 to 100%, measured in accordance with ISO 6603.