This experimental study investigates the mechanical properties of polymer matrix composites containing nanofiller developed by fused deposition modelling (FDM). A novel polymer nanocomposite was developed by amalgamating polycarbonate-acrylonitrile butadiene styrene (PC-ABS) by blending with graphene nanoparticles in the following proportions: 0.2, 0.4, 0.6, and 0.8 wt %. The composite filaments were developed using a twin-screw extrusion method. The mechanical properties such as tensile strength, low-velocity impact strength, and surface roughness of pure PC-ABS and PC-ABS + graphene were compared. It was observed that with the addition of graphene, tensile strength and impact strength improved, and a reduction in surface roughness was observed along the build direction. These properties were analyzed to understand the dispersion of graphene in the PC-ABS matrix and its effects on the parameters of the study. With the 0.8 wt % addition of graphene to PC-ABS, the tensile strength increased by 57%, and the impact resistance increased by 87%. A reduction in surface roughness was noted for every incremental addition of graphene to PC-ABS. The highest decrement was seen for the 0.8 wt % addition of graphene reinforcement that amounted to 40% compared to PC-ABS.

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The present work's target is to study the impact of fly ash or TiC nanoparticles or both on the characteristics of coir fiber epoxy hybrid composites. Mechanical characteristics like tensile, flexural, inter-laminar shear strength, impact strength, shore D hardness, and thermal stability or degradation characteristics were determined. The microstructure of the samples was observed from a scanning electron microscopy. It was observed that the addition of coir fiber, fly ash, and TiC nanoparticles in the epoxy polymer enhanced the mechanical and thermal characteristics of composites. It can be assigned to the better interaction and uniform distribution between the fillers and the epoxy polymer. Fillers acted a critical role in enhancing the characteristics of epoxy hybrid composites. Additionally, water absorption characteristics were also investigated for all specimens. A comparative examination was performed between various fabricated composite specimens. Results exhibited that, the water absorption of the composites improves considerably with the addition of reinforcements. Also, thermogravimetric analysis exhibited that the fabricated epoxy hybrid composites were stable thermally.

The present investigation is concentrated on the results of different fillers over the physical, mechanical, and thermal characteristics of the epoxy polymer. These epoxy hybrid composites were produced using mechanical-stirring assisted wet layup method with coir micro-particles, fly ash, Titanium Carbide (TiC) nanoparticles, and Innegra fabrics contains simultaneous considering mechanical stirring with a stirring rod. The tensile, flexural, and inter-laminar shear characteristics of fabricated epoxy hybrid composites were determined using a universal testing machine. After the reinforcement of fly ash and TiC nanoparticles offers the most remarkable improvement in tensile, flexural, and impact strength, about 2.84, 1.65, and 9.19 times compared with pure epoxy polymer. The differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA) showed the epoxy hybrid composites' enhanced thermal stability. The homogeneity of fillers dispersion in the epoxy polymer was observed from a scanning electron microscope (SEM). Keywords: Contact angle; Fly ash; Inter-laminar shear strength; Innegra Fabric; Tensile Strength; TiC nanoparticle

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