All Title Author
Keywords Abstract

Role of Silicon Dioxide Filler on Mechanical and Dry Sliding Wear Behaviour of Glass-Epoxy Composites

DOI: 10.1155/2013/324952

Full-Text   Cite this paper   Add to My Lib


The mechanical properties and dry sliding wear behaviour of glass fabric reinforced epoxy (G-E) composite with varying weight percentage of silicon dioxide (SiO2) filler have been studied in the present work. The influence of sliding distance, velocity, and applied normal load on dry sliding wear behaviour has been considered using Taguchi's L9 orthogonal array. Addition of SiO2 increased the density, hardness, flexural, and impact strengths of G-E composite. Results of dry sliding wear tests showed increasing wear volume with increase in sliding distance, load, and sliding velocity for G-E and SiO2 filled G-E composites. Taguchi's results indicate that the sliding distance played a significant role followed by applied load, sliding velocity, and SiO2 loading. Scanning electron micrographs of the worn surfaces of composite samples at different test parameters show smooth surface, microploughing, and fine grooves under low load and velocity. However, severe damage of matrix with debonding and fiber breakage was seen at high load and velocity especially in unfilled G-E composite. 1. Introduction Present day industries are experiencing an escalating trend in the applications of particulate and fiber reinforced polymer matrix composites. Some of these applications related to mechanical engineering experience surface interactions with the surroundings as well as with the pairing element. Such applications call for better understanding of the tribological behaviour of the material under study. Functional fillers are added to the thermoset matrix for improving its physical, mechanical and tribological properties. The modification of the mechanical, and tribological behavior of various polymers by the addition of filler materials has shown a great promise, and hence, it has been a subject of considerable interest. The filler materials include organic, inorganic, and metallic particulates in both macro- and nanolevels. Inclusion of solid lubricants such as graphite, molybdenum disulphide (MoS2), and polytetrafluoroethylene (PTFE) into polymers has proven effective in reducing the coefficient of friction but their influence on wear resistance is not distinctly clear [1]. Wear rate was reduced with the addition of PTFE into polymers such as polyphenylene sulfide (PPS), polyvinylchloride (PVC), polyarylate (PA), polyoxymethylene (POM), and polyamide (PA) [2]. Bolvari et al. [3] reported that the PTFE filled PPS reduced the wear rate of polymer remarkably. The role of PTFE filler in modifying the tribological behavior of fiber-reinforced composites has been studied


[1]  K. Tanaka, Y. Uchiyama, and S. Toyooka, “The mechanism of wear of polytetrafluoroethylene,” Wear, vol. 23, no. 2, pp. 153–172, 1973.
[2]  Y. Yamaguchi, Tribology of Plastic Materials, vol. 7 of Tribology Series, Elsevier, 1990.
[3]  A. Bolvari, S. Glenn, R. Janssen, and C. Elliset, “Wear and friction of aramid fiber and PTFE filled composites,” Sealing Technology, vol. 47, pp. 7–9, 1997.
[4]  B. Suresha, G. Chandramohan, J. Prakash, and V. Balusamy, “The role of fillers on friction and slide wear characteristics in glass-epoxy composite systems,” Journal of Minerals and Materials Characterization and Engineering, vol. 5, no. 1, pp. 87–101, 2006.
[5]  Siddhartha, A. Patnaika, and A. D. Bhattb, “Mechanical and dry sliding wear characterization of epoxy-TiO2 particulate filled functionally graded composites materials using Taguchi design of experiment,” Materials & Design, vol. 32, no. 2, pp. 615–627, 2011.
[6]  Y. J. Shi, X. Feng, H. Y. Wang, C. Liu, and X. H. Lu, “Effects of filler crystal structure and shape on the tribological properties of PTFE composites,” Tribology International, vol. 40, no. 7, pp. 1195–1203, 2007.
[7]  S. Basavarajappa, K. Arun, and J. Davim, “Effect of filler materials on dry sliding wear behavior of polymer matrix composites—a Taguchi approach,” Journal of Minerals and Materials Characterization and Engineering, vol. 8, no. 5, pp. 379–391, 2009.
[8]  W. Akram, S. K. Chaturvedi, and S. M. Ali, “Comparative study of mechanical properties of e-glass/epoxy composite materials with Al2O3, CaCo3, SiO2 AND PBO fillers,” International Journal of Engineering Research & Technology, vol. 2, no. 7, pp. 1029–1034, 2013.
[9]  B. Suresha and K. N. Shivakumar, “Investigations on mechanical and two-body abrasive wear behavior of carbon/glass fabric reinforced vinyl ester composites,” Materials & Design, vol. 30, no. 6, pp. 2056–2060, 2009.
[10]  K. R. Roy, A Premier on Taguchi Method, Van Nostrad Reinhold, New York, NY, USA, 1990.
[11]  G. Taguchi and S. Konishi, Taguchi Methods Orthogonal Arrays and Linear Graphs, American Supplier Institute, Dearborn, Mich, USA, 1987.
[12]  G. Taguchi, Introduction to Quality Engineering, Asian Productivity, Tokyo, Japan, 1990.
[13]  B. Suresha, G. Chandramohan, and M. A. Jawahar, “Three-body abrasive wear behavior of filled epoxy composite systems,” Journal of Reinforced Plastics and Composites, vol. 28, pp. 225–233, 2009.
[14]  B. Suresha, G. Chandramohan, P. R. Sadananda Rao, S. Seetharamu, and P. S. Sampathkumar, “Influence of SiC filler on mechanical and tribological behaviour of glass fabric reinforced epoxy composite systems,” Journal of Reinforced Plastics and Composites, vol. 26, no. 6, pp. 565–578, 2007.
[15]  M. G. Veena, N. M. Renukappa, B. Suresha, and K. N. Shivakumar, “Tribological and electrical properties of silica-filled epoxy nanocomposites,” Polymer Composites, vol. 32, no. 12, pp. 2038–2050, 2011.


comments powered by Disqus