Flame-Retardant and Thermal Degradation Mechanism of Caged Phosphate Charring Agent with Melamine Pyrophosphate for Polypropylene

Table 4

TGA characteristic parameters of PP and the flame retardant PP under air atmosphere.

Samples				Residue at 700°C
	(°C)	(°C)	(wt%/min)	(wt%)
PP	269	337	28.1	0
PP-1	278	346	23.5	8.9
PP-2	292	341	21.6	9.2
PP-6	287	346	19.6	9.6