Thermoplastic Polyurethane Elastomer Nanocomposites: Morphology, Thermophysical, and Flammability Properties

Table 3

Summary of cone calorimetry data at irradiance heat flux of 50 kW/m².

Material	tig (s)	PHRR (kW/m^2)	Avg. HRR, 60 seconds (kW/m^2)	Avg. HRR, 180 seconds (kW/m^2)	Avg. Eff. Hc (MJ/kg)	Avg. SEA (m^2/kg)
2102-90A TPU	32	2290	406	653	30	237
5% Cloisite 30B TPUN	34	664 (71% reduction)	560	562	25	303
5% PR-19-PS TPUN	27	624 (73% reduction)	532	456	22	295

t_ig: Time to sustained ignition; PHHR: Peak heat release rate; Avg. HRR: Average heat release rate after ignition; Avg. Eff, H_c: Effective heat of combustion; Avg. SEA: Average specific extinction area.