Dynamic Mechanical Properties and Characterization of Inorganic Particulate-fllled Polymer Composites

摘要

On the basis of Ashelby's method and Mori's work, a simplified equation describing the relationship between the storage modulus and filler volume fraction for polymer composites filled with inorganic particles was proposed. The dynamic mechanical properties of the low-density polyethylene composites filled with glass beads were measured using a Du Pont dynamical mechanical analysis instrument in temperature range from -150°C to 100°C. It was found that the storage modulus increased roughly nonlinearly with an increase of the glass bead weight fraction. The relative storage modulus of these composites was estimated by means of this equation under experimental conditions, and compared with the experimental data. The results showed that the predictions of this equation were roughly consistent with the measured data and were close to the estimations of the equations published in literature. Furthermore, this equation was also verified by quoting some experimental data of quartz powder filled epoxy composites from reference.