Development and Characterization of Recycled Polyolefin Blends for Profile Filler in Wet-type Submarine Cable

Extruded from non-crosslinked polyolefin (PO) materials, the profile filler (PFF) plays a critical role in reinforcing the structural integrity and rigidity of the final submarine cable assembly. It maintains the cable profile and prevents deformation or collapse under hydrostatic pressure, thereby ensuring consistent performance throughout its operational lifespan. Consequently, PFFs must be engineered not only to secure the power cores and fiber optics but also to facilitate ease of installation and economic viability. This study introduces a sustainable blend by utilizing a multi-component PO copolymer as a compatibilizer blended with mechanically recycled PO. The formulated blends were successfully extruded into PFF profiles, and their subsequent mechanical and physical properties were comprehensively evaluated.