Study on the preparation and Mechanical Properties of Polystyrene/Y_2O_3 Composites

摘要

Rare earth yttria (Y_2O_3) reinforced polystyrene composites were prepared by melt blending process. Mechanical properties, wear resistance of the PS/Y_2O_3 composites were characterized in contrast to neat PS. The improvement of the mechanical properties and wear resistance was attributed to the reinforcing effect of Y_2O_3 powder. Well distribution of Y_2O_3 powder in the PS matrix and good interfacial bonding were achieved by pretreated of Y_2O_3 using titanate coupling and dispersant followed by calcinations process. Results indicated that both of the Y_2O_3 powder pretreatment process and melt blending process have significant effects on the composite properties. When the Y_2O_3 content were 2.8wt%, the modify effect to PS was optimal. When the Y_2O_3 calcined at 900 "C was used, the impact of the composites were best, other performance improvements have also been good. When the Y_2O_3 content of 1.4wt%, the wear resistance of the composites were best.