Effect of Nanodiamonds and Multi‐walled Carbon Nanotubes in Thermoset Hybrid Fillers System: Rheology, Dynamic Mechanical Analysis, and Thermal Stability

Recently, the interfacial bonding between nanodiamonds (DNDs) and multi-walled carbon nanotubes (MWCNTs) in epoxy-based nanocomposites were found. In this work, effects of amino functionalization on MWCNTs and DNDs introduction on rheology, dynamic mechanical properties, and thermal stability of MWCNTs epoxy-based nanocomposites are discussed. The results show that pristine MWCNTs increase the complex viscosity, lower the molecular weight of epoxy net chains as well as glass transition temperature (T-g), and expand the phase separation. Amino functionalization of MWCNTs make the behaviors above disappeared nearly. Besides, introduction DNDs improved T-g and restricted the phase separation as well, but the high complex viscosity and non-Newtonian behavior remains. This work may provide inspirations for the further researches about hybrid fillers.