State Key Laboratory of Materials Processing and Die & Mould;
Technology;
Huazhong University of Science &Technology;
Wuhan 430074 China;
Hefei Casting and Forging Plant of Anhui Heli Co.;
Ltd.;
Hefei 230022;
China;
lost; foam; casting; EPS; St-MMA; pyrolysis; characteristics; pyrolysis; kinetics;