Synthesis of Surface-Modified Oil-Soluble Silica Nanospheres and Investigation of their Tribological Behavior


Article Preview

Silica nanospheres with good dispersibility in oily solvents were prepared using a facile in-situ surface-modification route. The microstructure of resultant surface-capped silica nanospheres was analyzed with a transmission electron microscope. The tribological behavior of the silica nanospheres as additive in engine oil SE 15W/40 was evaluated using a four-ball machine; and the morphology and composition of the worn steel surfaces were analyzed using a scanning electron microscope equipped with an energy dispersive X-ray analysis attachment. It was found that organic modifier hexamethyldisilazane (HMDS) was combined with nano-SiO2 by covalent bonds, resulting in varied surface properties and improved dispersibility of the nanoparticles in many organic mediums. Besides, oil-soluble silica nanospheres as additive in the engine oil had excellent friction-reducing and antiwear abilities, showing promising application prospect.



Edited by:

Deliang Chen




X. H. Li et al., "Synthesis of Surface-Modified Oil-Soluble Silica Nanospheres and Investigation of their Tribological Behavior", Advanced Materials Research, Vol. 266, pp. 30-33, 2011

Online since:

June 2011




[1] Y. C. Ke: Polymer-Inorganic Nanocomposites (Chemical Industry Press, China 2003).

[2] Li Z. W. and Zhu Y. F.: Appl. Surf. Sci. Vol. 211 (2003), p.315.

[3] J.X. He, M.Y. Cui, Y.Y. Zheng, W.H. Tang, B.Y. Chen, K. Tsukamoto and C.R. Li.: Mater. Lett. Vol. 64 (2010), p.463.

[4] I. Mukherjee, A. Mylonakis, Y. Guo, S. P. Samuel, S. X. Li , R. Y. Wei, A. Kojtari and Y. Wei: Microporous Mesoporous Mater. Vol. 122 (2009), p.168.

[5] X.H. Li, Z. Cao, Z. J. Zhang and H.X. Dang: Appl. Surf. Sci. Vol. 252 (2006), p.7856.

[6] Z. J. Zhang, J. Zhang and Q. J. Xue: J. Phys. Chem. Vol. 98 (1994), p.12973.

[7] X. H. Li, R. Sun, Z. J. Zhang, H.X. Dang and W. M. Liu: Prog. Nat. Sci. Vol. 14 (2004), p.1.

[8] X. H. Li, Z. Cao, F. Liu, Z. J. Zhang and H. X. Dang: Chem. Lett. Vol. 35 (2006), p.94.

[9] W. M. Liu: Tribology Vol. 23 (2003), p.265.

[10] J. H. Wang, H. Jing, X.B. Wang and W. M. Liu: Lubric. Eng. Vol. 32 (2007), p.111.

[11] J. F. Zhou, Z. J. Zhang, X.B. Wang, W.M. Liu and Q. J. Xue: Tribology Vol. 20 (2000), p.123.