Valorization of waste Ti6Al4V chips for epoxy composite production: A circular economy approach

Abstract With increasing awareness of the circular economy, utilizing waste materials from titanium alloys for polymer composites offers numerous advantages. In this study, medical‐grade titanium alloy, Ti6Al4V chips were finely ground and mixed with epoxy resin to produce particulate‐reinforced composites. The tensile strength showed a 32% improvement compared to the neat epoxy. Similar results were observed for the flexural test, showing a 36% improvement in the composites. Moreover, a substantial 96% increase in thermal conductivity was observed, significantly expanding the potential application areas for the epoxy‐based composites. These improvements were achieved without the use of superfine nanoparticles or other expensive additives. This underscores the potential of a circular approach in the materials world, offering many new opportunities while promoting sustainability. Highlights Circular utilization of titanium powders in polymer composites. Demonstrated effectiveness of titanium milling in composite production. Production of low‐cost, affordable composites suitable for diverse applications. Remarkable thermal conductivity values. Attainment of finely tuned mechanical properties.