eng Science and Education Publishing American Journal of Materials Science and Engineering 2333-4673 2026-07-19 14 2 34 42 10.12691/ajmse-14-2-1 AJMSE20261421 article Somia Alfatih M. S. 1 Ahmed Mallouli 1 2 Saeed Al-Noman 2 Abo-ElhagagA. Selim 3 Ahlam Ebrahim 4 5 Mohammed Y. Abdellah mohammed_yahya42@yahoo.com 5 Mechanical Engineering Department, College of Engineering, Alasala Colleges, Dammam 31483, Saudi Arabia Egyptien Maintenance Company.( EMC), Petrolum Ministry, Cairo, Egypt Mechanical Engineering Department, Faculty of Engineering, Qena University, Qena 83523, Egypt This study investigates the thermal insulation and mechanical properties of epoxy composites reinforced with date palm seed particles (DPF-Epoxy). Thermal performance was evaluated at 10W and 15W power levels against brass reference bars using nine sensor positions. The composite achieved average temperature reductions of 4.02°C (10.6%) at 10W and 10.22°C (21.5%) at 15W, with a maximum reduction of 23.2°C (44.4%) at T4 under 15W, demonstrating excellent insulation capability. Exponential decay modelling showed reliable thermal predictions with R² values of 0.706¨C0.997. Mechanical tests revealed different performance characteristics between the composite formulations. Sample A showed higher stiffness (Young¡¯s modulus: 33.11 GPa; UTS: 27.36 MPa), while Sample B exhibited higher strength and ductility (UTS: 33.61 MPa; strain: 1.498), with toughness values of 14.04 and 28.57 MPa, respectively. Hollomon analysis confirmed strain-hardening behaviour with exponents of 0.379 and 0.497. The results demonstrate that date palm seed reinforcement enhances both thermal insulation and mechanical performance, offering a sustainable route for developing multifunctional epoxy composites from agricultural waste for engineering applications. https://pubs.sciepub.com/ajmse/14/2/1/ajmse-14-2-1.pdf Date palm seed composites epoxy reinforcement thermal insulation mechanical properties sustainable materials agricultural waste valorization