| Journal: | Journal of applied research and technology |
| Database: | PERIÓDICA |
| System number: | 000403191 |
| ISSN: | 1665-6423 |
| Authors: | Younes, Hammad1 Christensen, Greg1 Groven, Lori2 Hong, Haiping1 Smith, Pauline3 |
| Institutions: | 1South Dakota School of Mines and Technology, Department of Material and Metallurgical Engineering, Rapid City, Dakota del Sur. Estados Unidos de América 2South Dakota School of Mines and Technology, Department of Chemical and Biological Engineering, Rapid City, Dakota del Sur. Estados Unidos de América 3U.S. Army Research Laboratory, Aberdeen Proving Ground, Maryland. Estados Unidos de América |
| Year: | 2016 |
| Season: | Dic |
| Volumen: | 14 |
| Number: | 6 |
| Pages: | 375-382 |
| Country: | México |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | Nano grease is found to be stable and homogeneous (wherein carbon nanotubes act as sole thickeners and oil is polyalphaolefin (PAO)). This is a good indication that three dimensional (3D) percolation network structures among carbon nanotubes (single wall and multi wall) play a crucial role in stabilization. To better understand this assumption and provide further evidence, some additional carbon nanomaterials, such as carbon nanofiber (CNF), graphene, fullerene (C60), Ni-coated single wall carbon nanotube (SWNT), are selected to make the grease. Unfortunately, CNF, graphene, fullerene (C60) and Ni-coated SWNT do not form stable greases as nanotubes do. In addition, SWNTs were mixed with CNF and Ni-coated SWNT respectively to see if stable grease could be formed. The results indicate that the CNF/SWNT did not form the stable grease, while Ni-coated SWNT/SWNT did. Inter molecular Van der Waals forces could reasonably explain these experimental results. Appropriate tube size (nanotube and nanofiber), stereo structure (nanotube, graphene and fullerene), surface energy (nanotube and Ni-coated nanotube) are critical factors that determine if Van der Waals forces could take effect or not. The scientific merit of this paper is that we understand in what manner stable greases are formed and what kinds of carbon materials are appropriate for acting as sole thickener |
| Disciplines: | Ingeniería |
| Keyword: | Ingeniería de materiales, Nanotubos de carbono, Estructura de percolación, Polialfaolefinas, Fuerzas de Van der Waals |
| Keyword: | Engineering, Materials engineering, Carbon nanotubes, Percolation structure, Polyalphaolefins, Van der Waals forces |
| Full text: | Texto completo (Ver HTML) |
