Optimization of tribological and mechanical properties of epoxy through hybrid filling

Guo, Qing Bing and Lau, Kin-Tak and Rong, Min Zhi and Zhang, Ming Qiu (2010) Optimization of tribological and mechanical properties of epoxy through hybrid filling. Wear, 269 (1-2). pp. 13-20. ISSN 0043-1648

Abstract

In the present work, epoxy based quaternary composites were produced by filling lubricant oil-loaded microcapsules, surface grafted nano-SiO2 and discontinuous carbon fibers. Through orthographic tests, the optimal contents of the fillers were determined for achieving significantly improved tribological properties. The lowest specific wear rate and friction coefficient of the composite can be 9.8 × 10−7 mm3/N m and 0.12, respectively, much lower than those of unfilled epoxy, i.e. 1.3 × 10−4 mm3/N m and 0.56. In addition, mechanical properties, especially the maximal loading ability, of the quaternary composite were evidently higher than those of the binary composite with oil-loaded microcapsules. The oil released from the broken microcapsules during sliding wear mainly accounted for the lubrication, while nano-SiO2 and carbon fibers serve as both solid lubricant and reinforcement. As a result, positive synergetic effect appeared and the proposed quaternary composites might be applicable in practice.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to published version due to publisher copyright policy.
Depositing User: Professor Alan Lau
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - No Department
Date Deposited: 06 Apr 2011 12:16
Last Modified: 03 Jul 2013 00:34
Uncontrolled Keywords: sliding wear; polymer-matrix composite; polymers; lubricant additives; binary composites; friction coefficients; loading ability; lubricant oil; microcapsules; nano- SiO; optimal content; surface grafted; synergetic effect; tribological properties; wear rates
Fields of Research (FOR2008): 09 Engineering > 0913 Mechanical Engineering > 091309 Tribology
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
10 Technology > 1007 Nanotechnology > 100708 Nanomaterials
Socio-Economic Objective (SEO2008): E Expanding Knowledge > 97 Expanding Knowledge > 970110 Expanding Knowledge in Technology
Identification Number or DOI: doi: 10.1016/j.wear.2010.03.001
URI: http://eprints.usq.edu.au/id/eprint/18728

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