Abstract: Halogen-free flame-retardant (HFFR) cable compounds are increasingly required to meet modern safety and environmental standards. However, their high filler loading complicates processing and narrows extrusion windows. Conventional crosslinking approaches—peroxide-based continuous vulcanization (CV) and silane-based moisture curing—remain widely used but face notable limitations. Peroxide CV requires high temperatures and produces chemical by-products, while silane cure is slow and moisture-dependent, often restricting uniform curing in thick constructions. This paper compares peroxide CV, silane cure, and electron beam (e-beam) curing with respect to processing efficiency, property development, and environmental impact. Results show that while peroxide and silane can deliver acceptable performance, both are constrained by inefficiency and variability. In contrast, e-beam curing achieves near-instantaneous, byproduct-free crosslinking with a penetration depth of approximately 0.315”–0.472” (8–12 mm) in polyolefins, enabling superior mechanical and thermal stability along with lower environmental impact. E-beam curing is therefore positioned as the most effective technology for next-generation HFFR cable manufacturing, combining productivity, performance, and sustainability.
Author Bio: Sasha Ghanbar is the Engineering Manager at Gendon Polymer Services and Cable Components Group. He leads cross-functional initiatives focused on halogen-free flame-retardant (HFFR) and fluoropolymer-based compounds for wire and cable applications. With a background in polymer engineering, Sasha’s expertise spans crosslinking technologies—including peroxide, silane moisture cure, and radiation methods—along with formulation design, compounding, and process optimization. He has authored several technical papers and actively contributes to industry collaborations and standards development within the wire and cable sector.
