Abstract: The phosphorus element hybrid polymer (OPP) was synthesized by step-reaction polymerization using phenyl dichlorophosphate (PDCP), ethylene glycol (EG), methanol, and the aluminum hydroxide-phosphorus hybrid polymer/polystyrene flame retardant composite (ATH-OPP/PS) were prepared by mixing nano-aluminum hydroxide (ATH) and OPP into polystyrene (PS). The structural characteristics and average molecular weight of OPP were explored by FT-IR and gel permeation chromatography (GPC). The thermal stability and flame-retardant properties of the composites were evaluated by TGA, limit oxygen index (LOI), microscale combustion calorimeter, SEM and XPS. The thermal decomposition activation energy (Ea) of composites were calculated by Flynn-Wall-Ozawa (FWO) method. The results show that thermal stability and LOI were improved and peak heat release rate (PHRR) and total heat release (THR) reduced due to ATH/OPP as retarded system. Ea increased with the increase of degradation conversion rate.
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2018, Vol. 32 
