Characterization of thermoplastic sintering properties: an exploratory study to evaluate its feasibility as an effective manufacturing method

Abstract

Manufacturing methods involve techniques to produce diverse parts and products, evolving with technological, economic, and societal changes. Powder metallurgy, a notable methodology, utilizes particle sintering to create complex, precise, and efficient solid parts, surpassing traditional removal-based methods. While extensively applied to metallic and ceramic materials, the exploration of sintering in polymeric materials is limited, necessitating further studies to assess feasibility. If proven viable, this technique could revolutionize thermoplastic material recycling, offering environmental benefits and fostering a sustainable circular economy. This study focuses on characterizing the sintering properties of Polyamide-6 (Nylon) and Polylactic Acid (PLA), understanding their impact on final material properties. Subsequently, destructive tests, like the three-point bending test per ASTM D790, will be conducted on specimens to determine mechanical properties. The aim is to validate sintering as an effective method for thermoplastic structure manufacturing, analyzing mechanical and structural properties. Additionally, the study aims to identify limitations, challenges, and opportunities for method improvement, advancing industrial applications and process quality.