Influence of reinforcement combinations of nanofillers in the development of epoxy-alumina-calcium silicate hybrid nanocomposites for oil and gas infrastructures serving under elevated temperatures

This research was carried out to develop a new polymer matrix hybrid nanocomposite material for oil and gas supply systems, with experimentation and the application of experimental design tools to investigate the material's creep limit and causes. To determine the factors contributing to the variability in properties due to temperature, time, and sample replication, a three-way ANOVA technique was applied to creep stress and creep strain data. The results of the tensile tests show that the new hybrid composite material (Epoxy-Alumina-Calcium Silicate Hybrid Nanocomposite) has superior strength compared to the neat epoxy or the baseline epoxy/alumina composite material. The hybrid composite with a 15% wt constituent was the only one that could withstand temperatures of up to 1300°C. Furthermore, a linear relationship was observed between the control factors (temperature and time) and the creep functions (stress and strain). Based on these findings, the new material is recommended as C (the hybrid composite with a 15% wt constituent of reinforcement filler). Finally, models were developed to predict strain and stress.