Thermal mechanical and morphology characterization for epoxy/grafted marble and granite powder composites

Direct radiation method has been used to graft styrene and acrylic acid monomer on to marble and granite powders. The grafted marble and granite powders were used as a filler of epoxy composites, they added to epoxy resin at weight percentage 20, 60 and 100 then cured at room temperature. The experimental results showed that the dispersion of marble powder in polymer matrix is remarkably improved, when the marble powder is grafted with monomers, the micro-hardness and impact strength of epoxy filled the modified marblewere higher than those of unmodified.When the epoxywas filled by unmodified and modified marble powder, its thermal stability was remarkably improved.