Synergistic Flame Retardant Effects of Expandable Graphite and Ammonium Polyphosphate in Water-Blow Polyurethane Foam

Table 3

Thermal properties of flame retardants and SPUF composites.

samples	Td (°C)	Tmax (°C), Vmax (%/°C)	T1stage (°C)	T2stage (°C)	T3stage (°C)	T4stage (°C)	Char residue (%)
SPUF	215	388, 1.16	280∼450	450∼600	—	—	13.1
EG	200	—	200∼380	—	—	—	78.7
APP	110	—	110∼215	220∼280	280∼358	360∼437	27.8
EG/SPUF	280	392, 0.81	215∼450	450∼600	—	—	27.9
APP/SPUF	110	358, 1.05	110∼230	260∼400	400∼488	—	19.2
EG/APP/SPUF-8	120	385, 0.79	120∼215	270∼450	—	—	27.7