Abstract. Graphene oxide coated silica hybirds (SiO 2 -GO) were fabricated through electrostatic assembly in this work, then blended with poly(vinylidene fluoride) (PVDF) by solution mixing to make PVDF nanocomposites. The interfacial interaction was investigated by scanning electron microscopy (SEM), polarized optical microscopy (POM) and Fourier transform infrared spectroscopy (FTIR). The results showed that the interfacial interaction was enhanced by adding of SiO 2 -GO and strong hydrogen bonds were observed. The as-made nanocomposites were investigated using standard tensile test and dynamic mechanical analysis (DMA) measurements, mechanical properties of PVDF with SiO 2 -GO hybrids showed limited improvement.

(LHR) engine. These engine test data confirmed that the NIST TGA is a useful tool in studying or formulating lubricants designed for high-temperature applications.