A Study on the Physical Variations of (Poly Phenylene Sulfide) Polymer Plastic Manufactured by Extrusion and Injection Molding

Polyphenylene sulfide (PPS) is a high-performance engineering plastic characterized by excellent heat resistance and chemical stability. As a crystalline thermoplastic polymer, PPS offers outstanding flame retardancy, mechanical strength, and dimensional stability, making it ideal for precision component manufacturing via various molding and processing methods. Owing to these properties, PPS and polyether ether ketone are widely used materials for retaining rings in chemical-mechanical polishing processes in the semiconductor industry. This study investigated how the thermal properties of PPS vary depending on the processing method, thereby identifying process-related factors that influence material performance. Extruded PPS, with its high crystallinity and thermal stability, is suitable for high-temperature environments that require structural reliability. By contrast, injection-molded PPS demonstrates rapid processability and complex thermal degradation characteristics, allowing for precise shape formation. The experimental results confirmed that even with the same base material, different molding processes can lead to significant variations in the thermal behavior. These findings provide foundational data for the optimization of polymer processing and evaluation of application suitability.