Dynamic Mechanical Behavior of Polyimide/Graphene Nanocomposite for Structural and Electronic Applications
The reinforcement of polyimide using multi-layered graphene sheets was adapted to fabricate new materials for structural and electronic applications. The composites were prepared by in situ polymerization of equimolar amount of 4, 4-oxydianiline (ODA) and pyromellitic dianhydride (PMDA), followed by thermal imidization. The dynamic mechanical behavior of the composite was examined as a function of frequency and temperature, effect of loading was explored to optimize the strength and durability. The Arrhenius equation was used to calculate the activation energy related to glass-rubber transition. We reported a synthesis of flexible electrically conductive nanocomposites, the addition of graphene showed an extremely large increase in the dielectric constant which allow the composite to store electric potential energy under effect of alternative electric field.
Authors: Wajeeh F. Marashdeh, and Jude O. Iroh
Conference: SAMPE Seattle 2017