Effects of UV Radiation-Induced Aging on the Tensile Mechanical Behavior of Polyamide: Implications for Telecommunications and Energy Applications

Abstract:

This study investigates the mechanical degradation of nylon 6,6 under tensile stress, induced by accelerated aging via ultraviolet (UV) radiation [1-3]. Specimens were fabricated and exposed to controlled UV doses, simulating outdoor weathering conditions. Tensile properties were evaluated, revealing a significant reduction in tensile strength and elongation at break with increasing UV dose. The predominant degradation mechanism was photo-oxidation, evidenced by polymer chain scission and the formation of functional groups altering the material's molecular structure[4,5]. Specimen surfaces exhibited cracks and fissures, contributing to mechanical strength loss. These findings are critical for nylon 6,6 applications in telecommunications and energy industries, where UV exposure is unavoidable. Understanding this degradation is essential for optimizing the durability and reliability of critical infrastructure. This study lays the foundation for developing advanced protective materials and coatings, enhancing the safety and efficiency of outdoor systems.

• Periodical: Key Engineering Materials (Volume 1037)
• Pages: 59-70
• DOI: https://doi.org/10.4028/p-fJw2r5
• Online since: January 2026
• Authors: Alejandro Morales-Ortiz*, Julian Marín, Camilo Quintero, Jaime Andres Rios, Tatiana Tamayo Marulanda
• Keywords: Crystallinity, Differential Scanning Calorimetry (DSC), Elongation at Break, Mechanical Degradation, Nylon 6,6, Photo-Oxidation, Tensile Strength, Thermogravimetric Analysis TGA, UV Radiation, Young’s Modulus

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