Abstract
High-density polyethylene (HDPE) protective nets, manufactured by a construction materials company, experienced failure after just 6 months of use. In our study, HDPE pellets were processed using an extruder, compression molding machine, and cutting knife to prepare dumbbell-shaped specimens in accordance with the ISO 37-2017 standard. The specimens without any degradation treatment were named as HDPE-0d, while those subjected to 40 days of thermal oxidation aging were named as HDPE-40d. A range of analytical tools, including a universal testing machine, thermogravimetric analyzer (TGA), plate rheometer (MCR), Fourier-transform infrared spectrometer (FTIR), and scanning electron microscope (SEM), were employed to evaluate the mechanical properties, thermal stability, rheological behavior, chemical structure, and microstructure of the HDPE protective nets. The results indicated that prolonged exposure to thermal oxidation and excessive shear stress at the installation points were the principal factors contributing to the degradation of the HDPE nets. Based on these findings, practical recommendations are proposed to mitigate similar failures in the future, alongside potential enhancements in the material’s stability and anti-aging properties.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call