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Selective laser sintering (SLS) is a new process to prepare the polystyrene (PS)/AI2O3 nanocomposites. In thispaper, with different laser power and other processing parameters unchanged, the morphology, density and mechanicalproperties of the sintered specimens were investigated. It was found that nano-sized inorganic particles are uniformlylocated in the PS matrix and the maximum density of the sintered specimens with pure PS powder reaches 1.07 g/cm3,higher than 1.04 g/cm3 that of the sintered specimens with mixture powder. Due to strengthening and toughness ofthe nano-sized AI2O3 inorganic particles, the maximum notched impact strength and tensile strength of the sinteredpart mixed with nano-sized inorganic particles are improved greatly from 7.5 to 12.1 kJ/m2 and from 6.5 to 31.2 MPa,respectively, under the same sintering condition.
Selective laser sintering (SLS) is a new process to prepare the polystyrene (PS) / AI2O3 nanocomposites. In thispaper, with different laser power and other processing parameters unchanged, the morphology, density and mechanical properties of the sintered specimens were investigated. It was found that nano-sized inorganic particles are uniformly associated with the PS matrix and the maximum density of the sintered specimens with pure PS powder reaches 1.07 g / cm3, higher than 1.04 g / cm3 that of the sintered specimens with mixture powder. Due to strengthening and toughness of the nano-sized AI2O3 inorganic particles, the maximum notched impact strength and tensile strength of the sinteredpartpart with nano-sized inorganic particles are improved greatly from 7.5 to 12.1 kJ / m2 and from 6.5 to 31.2 MPa, respectively, under the same sintering condition .