The expanded graphite was prepared through microwave expanding method and the nanographite
sheets were prepared through ultrasonic treatment and decoration technology. The microstructure of expanded graphite
and nanographite sheets were characterized by means of SEM, XRD and FTIR. Meanwhile, the application of
nanographite sheets in EPDM/ Graphite nanocomposites were introduced. The results showed that EG aremade from a
lot of graphite sheets with 100 to 300 nm thickness and formed a kind of net structure. By means of ultrasonic treat
ment, graphite is exfoliated and became many nanographite sheets with 30 to 60 nm thickness, meanwhile, the active
groups are led into the surface of nanographite sheets. The application effect of nanographite sheets in EPDM/ Graphite
nanocomposites are good.