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Sliding wear performance of nano-SiO2/short carbon fiber/epoxy hybrid composites by Qing Bing Guo; Min Zhi Rong; Guo Liang Jia; Kin Tak Lau; Ming Qiu Zhang is a Engineering article available to read on EtoBox.

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In the present work, epoxy based composites filled with hybrid nano-SiO 2 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-SiO 2 /matrix interfacial interaction was enhanced. By evaluating sliding wear properties of the composites as a function of the components concentrations, positive synergetic effect was found. That is, both wear rate and friction coefficient of the hybrid composites were significantly lower than those of the composites containing individual nano-SiO 2 or short carbon fiber. The composite with 4 wt.% nano-SiO 2 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-SiO 2

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Author

Qing Bing Guo; Min Zhi Rong; Guo Liang Jia; Kin Tak Lau; Ming Qiu Zhang

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0043-1648)

Published

2009

Language

EN

Field

Engineering (Physical Sciences)