▎ 摘　　要

Epoxy nanocomposites are extensively studied in the literature and increasingly applied in industrial sectors that require performance improvement. Despite the numerous works looking for glass transition temperature (T-g) enhancements, there is uncertainty about the extent of achievable increases in this property by thoroughly conducted studies and a lack of consideration of stoichiometry effects. This paper presents a study with statistical evaluation of the resin/curing agent ratio for oxidized carbon nanotubes, aminated carbon nanotubes, graphene oxide and nano-calcium carbonate in epoxy systems. The functionalization of the synthesized nanomaterials was confirmed by infrared spectroscopy and thermogravimetry (TG). Scanning electron microscopy (SEM) images indicated a proper dispersion and distribution of the nanofillers. No significant change in maximum T-g or enthalpy change of curing (delta H-reaction) occurred for the nanocomposites with 1 wt% nanomaterial by observation of the optimal resin/curing agent ratio after linearizing the differential scanning calorimetry (DSC) results. The dynamic mechanical analysis (DMA) curves corroborated this behavior. The robust results obtained by DSC and DMA demonstrate the importance of the resin/curing agent ratio in the reproducibility of T-g results. Therefore, this work provides a statistical indication of T-g maintenance for a composition of epoxy nanocomposites with different nanofillers at 1 wt% and can be used to support further studies in the area.