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

摘要

Seat components and claddings for railway molded or formed from a thermoplastic polymer composition comprising, based on the total weight of the composition, 50 to 93 wt.% of a specific polycarbonate; 4 to 30 wt.% of a poly(carbonate-siloxane) comprising bisphenol A carbonate units, and siloxane units; 3 to 20 wt.% of an organophosphorus compound in an amount effective to provide 0.1 to 2.0 wt.% of phosphorus, based on the total weight of the thermoplastic polymer composition; wherein an article having a thickness of 0.5 to 10 mm molded from the composition has a Ds-4 smoke density ≤ 300 measured according to ISO 5659-2, and a MAHRE ≤ 90 kW/m2 measured according to ISO 5660-1, a multiaxial impact energy ≥ 100 J, and a ductility in multiaxial impact of 80 to 100% at +23°C according to ISO 6603.