Sliding wear performance of nano-SiO2/short carbon fiber/epoxy hybrid composites

Guo, Qing Bing and Rong, Min Zhi and Jia, Guo Liang and Lau, Kin-Tak and Zhang, Ming Qiu (2009) Sliding wear performance of nano-SiO2/short carbon fiber/epoxy hybrid composites. Wear, 266 (7-8). pp. 658-665. ISSN 0043-1648


In the present work, epoxy based composites filled with hybrid nano-SiO2 particles and short pitch based carbon fiber were prepared. Copolymer of styrene and maleic anhydride was grafted onto the nanoparticles prior to the compounding so that the nanoparticles can be covalently connected to the composites’ matrix through the reaction between anhydride and epoxide groups during curing. Consequently, the nano-SiO2/matrix interfacial interaction was enhanced. By evaluating slidingwear properties of the composites as a function of the components concentrations, positive synergetic effectwas found. That is, both wear rate and friction coefficient of the hybrid composites were significantly lower than those of the composites containing individual nano-SiO2 or short carbon fiber. The composite with 4 wt.% nano-SiO2 and 6 wt.% carbon fiber offered the greatest improvement of the tribological performance. Compared to the results of hybrid composites reported so far, the above composite is characterized by relatively lower filler content, which would facilitate processing in practice. Increased surface hardness, lubricating effect
of the sheet-like wear debris reinforced by nano-SiO2 and rapidly formed transfer film were believed to be the key issues accounting for the remarkable wear resisting and friction reducing behaviors.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restrcited access to published version due to publisher copyright restrictions. Available online 21 September 2008
Faculty/School / Institute/Centre: Historic - Faculty of Engineering and Surveying - No Department
Date Deposited: 23 Sep 2011 02:00
Last Modified: 17 Oct 2014 01:41
Uncontrolled Keywords: polymer-matrix composites; hybrid compounds; nanoparticles; short-fiber composites
Fields of Research : 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: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1016/j.wear.2008.08.005

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