This research studies the effects of filler loadings of many powders such as Nickel Oxide (NiO), Zinc Oxide (ZnO), Alumina (Al2O3), and Carbon Nano Particles (CNP) on the mechanical properties of a polymeric blend of two types of epoxy resins. which was used as a matrix. Research samples were prepared by Handle Lay-Up Modeling. The fillers added separately with different ratios as (10 wt.%, 20 wt.%, 30 wt.%, 40 wt.%, 50 wt.%). Tensile Strength, compression strength, hardness tests, and the study of surface topography were conducted using a scanning electron microscope (SEM). The (SEM) of (NiO) and (Al2O3) composite powders, showed a smooth surface with a chance of forming very few voids, blisters, and a conglomeration on the surface of the sample, which increased with the increase of the weight fractions of the filled powder. While the composites filled with (ZnO) and (CNP) powders show a rough surface filled with undulations, blisters, some micro-cracks, agglomeration, and clusters, whereby, as the weight concentrations of powders rise, transform to a smooth surface free of microcracks and voids; spatially, the composite comprising (ZnO) powder, while the surface of (CNP) has more voids. The results also showed that these powders' strengthening enhances the mechanical characteristics, especially in the case of reinforced by (ZnO) and (CNP) powder as recorded highest tensile strength (1.252 MPa) and (1.061 MPa), respectively, after increasing the weight fraction to (20- 50 wt.%), While it was less so in the case of increase of weight fractions, the compression strength equal to (13.72 MPa) and surface hardness was (12.25 MPa). Other types of powder such as (Al₂O₃) and (NiO) led to a decrease in tensile strength, and an increase in shore D hardness and compression strength

Blends, Polymer Composite, ZnO Powder, NiO Powder, Al₂O₃ Powder, Carbon Nanoparticles (CNP), Mechanical Properties, Tensile Test, Compression Test, Hardness Test