Thermoplastic Polyurethanes as Carbonization Agents in Intumescent Blends. Part 2: Thermal Behavior of Polypropylene/Thermoplastic Polyurethane/Ammonium Polyphosphate Blends

摘要

Melt blending of thermoplastic polyurethane (TPU)/ammonium polyphosphate (APP) additives in a polyropylene matrix improves fire proper- ties of the polyropylene-based materials via an intumescence process. In this study, the protective effect of intumescence is studied considering the thermal stability of a particular FR PP/TPU/APP blend in the conditions of its thermo-oxidative degradation.