Thermal Stability and Flame Resistance of the Coextruded Wood-Plastic Composites Containing Talc-Filled Plastic Shells

Table 3

Summary of flammability performance.

Talc content (wt%)^a	PHRR^b (kW/m^2)	AHRR (kW/m^2)	THR (MJ/m^2)	TSR (m^2)
Core	313.5 (30.3)^c	221.0 (22.1)	193.2 (18.7)	4167.0 (398.1)
0	805.1 (78.7)	286.5 (28.7)	295.0 (27.8)	6466.9 (637.7)
5	807.1 (79.7)	280.2 (27.5)	302.5 (30.1)	6476.0 (653.2)
15	805.1 (78.9)	286.5 (26.9)	295.0 (29.7)	6466.9 (612.8)
25	571.6 (53.8)	239.4 (21.1)	276.5 (22.5)	5938.6 (578.9)
35	476.3 (42.1)	215.7 (19.8)	260.9 (25.8)	5036.8 (511.2)
50	323.3 (31.5)	192.7 (19.6)	262.1 (26.3)	4708.1 (381.9)

^aFiller content was based on the total composite weight. ^bPHRR = peak heat release rate; AHRR = average heat release rate; THR = total heat release; AMLR = average mass loss rate; ASEA = average specific extinction area; AEHC = average effective heat of combustion. ^cNumbers in the parenthesis are standard deviation.