Nano-hybridization effects of nano-silica and nano-graphene platelet on mechanical properties of E-glass/epoxy nanocomposites

This study reveals the nano-hybridization effects of nano-graphene platelets (NGPs) and nano-silica (SiO2 nanoparticle), having different structural geometries on the mechanical properties, nano and micro-scale failure behaviors, and nanoscale fracture mechanisms of E-glass/epoxy composites. Tensile, three-point bending, and Charpy impact experiments were applied to determine the mechanical behaviors of 0.5 wt.% NGPs, 4 wt.% nano-silica and 0.5 wt.% NGPs + 4 wt.% nano-silica nanohybrid filled E-glass/epoxy and neat E-glass/epoxy composite samples. Failure of composite samples was examined by microscopy and SEM analysis. FTIR analyses were conducted to interpret the chemical and physical interactions between the nanoparticles and epoxy resin. Nano-hybridization exhibited the highest tensile strength and three-point flexural force for the composite samples. However, the NGPs filled nanocomposites also exhibited the best static tensile toughness and impact energy absorption. The experimental data showed that it was statistically significant as a result of the one-way ANOVA analysis. Remarkably, nano-hybridization of nano-silica and NGPs showed different fracture mechanisms at the nano and micro-scales.

Study on tribological properties of nano lubricating oil blends for diesel engines

This paper is to evaluate and compare the tribological properties of lubricating oil blends added with nano graphene and lubricating oil blends added with cerium oxide (CeO2) on the key friction pairs of the diesel engines. The dispersion stability is the premise of studying the tribological properties. In this paper, nano-CeO2 particles were self-made and high-quality nano-graphene was purchased. The dispersion stability of the two nanomaterials in lubricating oil was studied after the same modification respectively. According to the working conditions of the cylinder liner and the piston ring, the friction and wear tests of the lubricating oil blends added with the modified nanomaterials were carried out at the different temperatures. The results showed that the oleic acid and the stearic acid modified the two nanomaterials successfully. The dispersion stability of the modified nanomaterials in lubricating oil was improved. The dispersion stability of the lubricating oil blends added with graphene before and after modification was slightly higher than that of lubricating oil blends added with CeO2 before and after modification, respectively. At the high temperature, the anti-friction property of the two nano lubricating oil blends was similar. At the ambient temperature, lubricating oil blends added with modified CeO2 did not play a role in reducing friction, while lubricating oil blends added with modified graphene had the effect of reducing friction. Whether at ambient temperature or at the high temperature, the anti-wear property lubricated with lubricating oil blends added with modified CeO2 within the right concentration range was better than that lubricated with lubricating oil blends added with modified graphene.

Improvement Physical Features Composite Comprise of Strain Nano-metals (Ag, MN) Assembled on Graphene Suspended Inside PEG Matrix and Its Application

In order to get desirable flexible conductive and stretchable materials used as future conductive Devices It should find a pathway or create a new composite that is thermally stable, non-toxic, environmentally inexpensive, easier carrier, and highly efficient. The composite chip is composed of metals nanoparticles (MN, Ag), assembled on a thin layer of Nano Graphene impregnated inside the polyethylene glycol (PEG) matrix. Various characterization had been conducted to demonstrate the physical feature of the new composite, like UV, CVT, TEM, XRD, and TGA.

Adsorption of Oils Pollutants by Using Nano Materials

Oil and gas pollutants are among the most important and serious problems facing the world in general and the oil and gas sectors in particular. Always all legislation, international, professional and environmental organizations have been working hard to find legislation and concentrations allowed to reduce the impact and spread of these pollutants. Due to the seriousness and impact of these pollutants, great efforts are being taken to reduce these pollutants. Nano technology have been emerged as a viable option to reduced the effects of pollution facing the oil and gas industry. Porphyrin nano graphene were used for the removal of petroleum and gas pollutants through utilized adsorption process. Variety of several parameter has been done to explain the mechanism of adsorption of petroleum and gas pollutants by using porphyrin nano graphene.