Zeinab Farhadinejad - Department of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran.
Morteza Ehsani - Department of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran.
Samad Moemen-Bellah - Department of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran.
Seyed Mohammad Bagher Alavi - Department of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran.

Nowadays, presence of nano particles plays an essential role in high-tech polymeric devices. Nano aluminium oxide which is a hard spherical material with high stiffness and significantthermal conductivity has capability to improve thermal and mechanical properties of the nano composite.Lots of studies have been done on epoxy/nano aluminiumoxide systems; however, the relation between dispersion of nanoparticles and specific properties of nanocomposites hasnot still comprehended thoroughly. The objective of this study is to investigate the effect of nano alumina on mechanical and thermal characteristics of nano epoxy composites filled with different weight percent of nano aluminium oxide