# FRICTION AND WEAR OF EPOXY COMPOSITES CONTAINING SILICA NANOPARTICLES GRAFTED BY HYPERBRANCHED AROMATIC POLYAMIDE

> Title: FRICTION AND WEAR OF EPOXY COMPOSITES CONTAINING SILICA NANOPARTICLES GRAFTED BY HYPERBRANCHED AROMATIC POLYAMIDE Page Range: p.673-682 Author(s): Ying Yu; Min Zhi Rong; Ming Qiu Zhang File size: 408K Download the pdf (subscribers only) Buy the pdf (non-subscribers) Journal: Polymers and...

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Published: 2012-08-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: FRICTION AND WEAR OF EPOXY COMPOSITES CONTAINING SILICA NANOPARTICLES GRAFTED BY HYPERBRANCHED AROMATIC POLYAMIDE**
 Page Range: p.673-682
 Author(s): Ying Yu; Min Zhi Rong; Ming Qiu Zhang
 File size: 408K
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc20-8&JournalID=101701&JIP=) (subscribers only)
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 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 20
 Issue No: No.8

**Abstract**
 Nano-sized SiO2 particles grafted with hyperbranched aromatic polyamide were employed as fillers for fabricating epoxy based composites. The hyperbranched aromatic polyamide was selected because its terminal amine groups could take part in the curing reaction of epoxy resin and covalently connect silica nanoparticles with the matrix. The experimental results proved the occurrence of this reaction, and indicated that the presence of the grafted SiO2 in epoxy does not change the overall curing mechanism of epoxy. In comparison to the composites filled with untreated nano-SiO2 particles, the composites with the grafted nano-SiO2 exhibited significantly improved sliding wear resistance and reduced frictional coefficient owing to the strong filler/matrix interfacial bonding. Moreover, hyperbranched aromatic polyamide grafted nano-SiO2 was more effective to enhance tribological properties of epoxy than linear polymers grafted versions. 23 Refs.

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