▎ 摘　　要

The widespread use of natural fibre composites is a recent advance in research as researchers are currently focusing on the substitution of synthetic fibre composites with natural fibre composites. This paper presents the viscoelastic and mechanical behaviour of reduced graphene oxide (rGO) and Zirconium dioxide (ZrO2) filled jute/epoxy hybrid composite at various temperatures, especially the subzero temperatures. The jute/epoxy hybrid composites tested at the subzero temperatures ranging from - 60 degrees C to room temperature to quantify the effect of temperature on the viscoelastic behaviour of the filled composites. The relaxation, loss, and storage modulus, the damping factor and Cole-Cole plot show that ZrO2 filled jute/epoxy composites exhibit better energy dissipation and adhesion compared to rGO hybrid composites. The tensile strength, compressive strength, flexural strength, energy absorption, interlaminar shear strength (ILSS) are analysed at various temperature conditions. The glass transition temperature Tg of the hybrid composites evaluated based on modulus, and damping curves reveal that ZrO2 filled has the highest value of 85.8 degrees C. The ZrO2 filled jute/epoxy composite exhibited better mechanical properties at all temperatures compared to the rGO filled composites. The hybrid composites tested for strength at subzero temperatures showed enhanced mechanical properties compared to room temperature conditions.