Graphene oxide (GO) was synthesized by modified Hummer’s method and it reduced with hydrazine. Synthesized reduced graphene oxide (rGO) was characterized by FT-IR spectroscopy, X-ray diffraction spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. An elastomeric nanocomposite was prepared by incorporating rGO in silicone rubber using two roll mill mixing method.Tribological study was conducted at a wear surface of hardened ground steel against different applied load, sliding speed and temperature using a pin on disk setup. Addition of rGO results in an improvement of mechanical, tribological and thermal properties of silicone rubber. The coefficient friction (COF) and specific wear rate of the nanocomposite decreased with rGO concentration, applied load, and temperature. Morphological analysis of SRrGO nanocomposites was deeply investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM). Worn surface analysis confirms that rGO forms a lubricant film on the counter surface but it fails to form a strong adhesive film on the metal surface. The depth wear rate decreased by the incorporation of rGO in the Silicone rubber (SR) matrix.

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In this study, tribological properties and surface characteristics of silicone rubber/graphite (QMG) composites were investigated as a function of applied load, sliding velocity (1–5 m/s) and temperature. This study discusses a novel approach to improve the tribological properties of silicone rubber (QM). Inclusion of graphite significantly reduces the friction coefficient (̴40%) and specific wear rate of QM (50%). Wear mechanism involves formation of transfer film at the interphase between composite and steel counter surface. Tribological performance of QMG composites were found to be in agreement with its morphological, mechanical and dielectric properties.

In this work, octadecyl trichlorosilane (ODTS) was used to modify the surface of graphene oxide. Further, varied concentrations of silane‐modified graphene oxide were used to make silicone rubber nanocomposite. The mechanical, thermal, and tribological properties of the composite were studied. The results showed that a small amount of silane‐modified graphene oxide significantly increased the mechanical and tribological performances. Under dry sliding, silane‐modified graphene oxide to the silicone matrix significantly reduced wear and friction properties. Nanocomposites have a lower wear rate than neat silicone rubber; their friction coefficient is almost 36% less than pure silicone rubber: the higher the load and temperature conditions, the more significant the difference in friction and properties. Wear mechanisms were revealed by scanning electron micrographs of the worn surface. The transfer film formation on the counter surface and acceptable wear debris improved the nanocomposites friction and wear resistance characteristics.