Abstract: ABS/DBDPO/Sb2O3 and ABS/DBDPE/Sb2O3 composites have been prepared, and their flame retarding performance was studied using cone calorimeter and simulated with field simulation software (FDS). Compared with ABS/Sb2O3, the average value of heat release rate, peak heat release rate, effect heat combustion, and total heat release of ABS/DBDPO/Sb2O3 system decreased by 42.29 %, 48.87 %, 24.11 %, and 63.24 %, those of ABS/DBDPE/Sb2O3 system decreased by 41.49 %, 44.99 %, 21.37 %, and 62.31 %. The specific extinction area, total smoke release, and average CO production of ABS/DBDPO/Sb2O3 and ABS/DBDPE/Sb2O3 were higher. The FDS results indicated that the available evacuation time of ABS/Sb2O3 was 67.7 s, while that of ABS/DBDPO/Sb2O3 and ABS/DBDPE/Sb2O3 were larger than 150 s, higher than the required evacuation time 139.5 s.

Key words: acrylonitrile-butadiene-styrene copolymer, flame retardancy, cone calorimeter, field simulation software, safe evacuation time