@article{ref1,
title="Thermoplastic polyurethanes as carbonization agents in intumescent blends. part 2: Thermal behavior of polypropylene/thermoplastic polyurethane/ammonium polyphosphate blends",
journal="Journal of fire sciences",
year="2000",
author="Bugajny, M and Le Bras, M and Bourbigot, S.",
volume="18",
number="1",
pages="7-27",
abstract="Melt blending of thermoplastic polyurethane (TPU)/ammonium polyphosphate (APP) additives in a polypropylene matrix improves fire properties of the polypropylene-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. Thermogravimetric analysis allows the computation of the degradation rate of a particular system using the Invariant Kinetic Parameters method. The study shows that a reaction between APP and TPU leads to the formation of the intumescent shield and gives a material with improved thermal stability. Finally, we present the computed temperature of the degradation front of the blend that is proposed as a probe for the estimation of the fire retardancy.<p />",
language="en",
issn="0734-9041",
doi="",
url="http://dx.doi.org/"
}