Friction and Wear Behaviors of Solid Lubricants/Polyimide Composites in Liquid Mediums

Abstract:

The tribological properties of polyimide (PI) composites reinforced with graphite or MoS2 sliding in liquid alkali and water as well as dry friction were investigated using a ring-on-ring tester. The results show that the friction coefficient (μ) and wear rate (W) for both graphite/PI and MoS2/PI composites in different liquid mediums are μdry>μwater >μalkali and Wwater>Wdry >Walkali. Results also indicate that the friction coefficient and wear rate of the PI composites filled with different solid lubricants are μMoS2 >μgraphite and W MoS2 >Wgraphite in different liquid mediums. In addition, the hydrophobic inorganic fillers are fit for the reinforcement of polymer-based composites sliding in liquid mediums. It is also concluded from the authors’ work that the wear rate and friction coefficient of polymer-based (such as PI, PTFE) composites in the alkali lubricated conditions is lowest among all the friction conditions. This may be attributed to the ionic hydration in the alkaline solution.

• Periodical: Materials Science Forum (Volumes 654-656)
• Pages: 2763-2766
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.654-656.2763
• Online since: June 2010
• Authors: Li Wen Mu, Xin Feng, Yi Jun Shi, Huai Yuan Wang, Xiao Hua Lu
• Keywords: Alkali, Friction, Polyimide (PI) Composite, Solid Lubricant, Water, Wear

References

[1] X. L. Wang, Y. F. Li, S. J. Zhang and X. Zhao: Eur. Polym. J. Vol. 42 (2006), p.1229.

[2] X. Z. Fang, Z. H. Yang, L. X. Gao and M. X. Ding: Polymer Vol. 45 (2004), p.2539.

[3] H. Cai, F.Y. Yan and Q.J. Xue: Mater. Sci. Eng., A Vol. 364 (2004), p.94.

[4] P. Samyn and G. Schoukens: Mater. Chem. Phys. Vol. 115 (2009), p.185.

[5] X. R. Zhang, X. Q. Pei and Q. H. Wang: Mater. Chem. Phys. Vol. 115 (2009), p.825.

[6] X. B. Li, Y. M. Gao, J. D. Xing, Y. Wang and L. Fang: Wear Vol. 257 (2004), p.279.

[7] H. J. Song, Z. Z. Zhang and Z. Z Luo: Surf. Coat. Technol. Vol. 201 (2006), p.2760.

[8] H. Y. Wang, X. Feng, Y. J. Shi and X. H. Lu: China Particuology Vol. 5 (2007), p.414.

[9] L.P.G. Farr: Wear Vol. 35 (1975), p.1.

[10] Z. Z. Zhang, Q. J. Xue, W. M. Liu and W. C. Shen: Wear Vol. 210 (1997), p.151.

[11] L. G. Yu, P. Y Zhang and Z. L. Du: Surf. Coat. Technol. Vol. 130 (2000), p.110.

[12] V. K. Paruchuri: Colloid Surface Physicochem. Eng. Aspect Vol. 250 (2004) p.519.

[13] J. C. Rasaiah and S. Koneshan: J. Am. Chem. Soc. Vol. 122 (2000), p.11182.

[14] J. Zhou, X. H. Lu, Y. Wang and J. Shi: Fluid Phase Equil. Vol. 194-197 (2002), p.257.

[15] Q. Shao, L. L. Huang and X. H. Lu: Phys. Chem. Chem. Phys. Vol. 10 (2008), p.1896.