Flame retardant PPO/SEBS/SEBS-g-MAH blends were prepared by twin-screw extrusion with styrene ethylene/butadiene styrene block copolymer (SEBS) as elastomer,SEBS-g-MAH as compatibilizer,and red phosphorus and Mg(OH)2 as flame retardant.When the amount of red phosphorus was 15 phr and Mg(OH)2 was only 80 phr,the limiting oxygen index (LOI) of PPO/elastomer blend could reach 28% and the combustion grade could reach UL94V-0 level.At the same time,the heat release rate (HRR) and smoke generation rate (SPR) during combustion were greatly reduced.
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