Author(s)

Konstantina Zafeiropoulou¹, Christina Kostagiannakopoulou¹, Marita Georgopoulou¹, Christina Vogiantzi¹, Theodoros Loutas¹, Stavros Tsantzalis¹, George Sotiriadis¹, Vassilis Kostopoulos^1,2*

¹Department of Mechanical Engineering & Aeronautics, University Campus Patras, Rio Achaia, Greece.
²Foundation of Research and Technology, Institute of Chemical Engineering Sciences (FORTH/ICE-HT), Rio Achaia, Greece.

In an effort to expand the insulating behavior of adhesives, incorporated nano-sized fillers, such as multi-walled carbon nanotubes (MWCNTs) and graphene nanoplatelets (GNPs), are usually selected. Including both MWCNTs and GNPs into polymers is assumed to have complementary influence (synergy), providing a new research area. Nevertheless, limited studies have been carried out towards this hybrid direction, as it is challenging to achieve a uniform distribution of both fillers into the polymer matrix. In this work, the addition of MWCNTs and GNPs into the epoxy adhesives has been studied to increase their thermal and electrical conductivity without diminishing their mechanical properties. Three types of nano-reinforced adhesives were developed by using: 1) 2%wt. MWCNTs, 2) 8%wt. GNPs and 3) 1%wt. MWCNTs and 8%wt. GNPs. The production of nano-reinforced adhesives was achieved by using a three-roll milling technique, while during the experimental characterization single lap shear tests, thermal and electrical conductivity measurements were performed. According to the results, the introduction of nano-particles caused significant increases in electrical and thermal conductivity. MWCNTs in content of 2%wt. showed the highest improvement in the electrical conductivity (9 orders of magnitude), while GNPs in content of 8%wt. recorded the highest increase (207%) in the thermal conductivity of nano-reinforced adhesives. Finally, it was observed that the hybrid system successfully contributed to the development of a multi-functional epoxy adhesive with improved thermal and electrical properties without significantly compromising its mechanical properties.

Graphene Nanoplatelets, Multi-Walled Carbon Nanotubes, Adhesives, Hybrid Nanocomposites

Zafeiropoulou, K. , Kostagiannakopoulou, C. , Georgopoulou, M. , Vogiantzi, C. , Loutas, T. , Tsantzalis, S. , Sotiriadis, G. and Kostopoulos, V. (2021) Development of Multi-Functional Hybrid Carbon-Based Nano-Reinforced Epoxy Adhesives. World Journal of Mechanics, 11, 258-274. doi: 10.4236/wjm.2021.1112017.