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

Table 1

The experimental and theoretical elemental analysis results of PEPA.

Elements	C	H	O	P
Theoretical content (wt%)	33.33	5.00	44.44	17.23
Experimental content (wt%)	33.51	3.90	45.23	17.36