Enhancing Mechanical and Thermal Properties of Unsaturated Polyester Composites Through Sidr Leaves' Particle Reinforcement

The Sidr Leaves Powder (SLP) is full of natural renewable, and cost-free energy resources with excellent heat resistant properties.Mixing natural fillers in conjunction with unsaturated polyester increases the mechanical and thermal features of composites, which eliminates or reduces the need for additional binders.This study probes the outcomes of supplementing Sidr Leaves Powder at different filler concentrations on the mechanical properties (durability, compression, and impact) as well as thermal conductivity accompanied by FTIR spectroscopy characterization of unsaturated polyester composites.Samples were made using hand-lay molding procedures.The consequences reveal that the maximal impact resistance is (2.52kJ/m 2 ), the highest hardness (72.4 N/mm 2 ), and the highest compressive strength about (48.7 MPa).Moreover, the thermal conductivity's value drops to (0.101 W/m.℃). on 25% volumetric fraction.With FTIR spectra, the evidence of alteration in the chemical content and molecular structure of nanocomposites with varying filler content emerged, making the analysis of the composite material properties possible.These outcomes indicate the prospective usefulness of these composites in such fields as furniture manufacturing, especially in case of a couch due to their super properties.