Nano-/microscale investigation of tribological and mechanical properties of epoxy/MWNT nanocomposites

Majid Reza Ayatollahi*, Saeed Doagou Rad, Shahin Shadlou

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The effects of MWNT content and aspect ratio on the properties of epoxy-based nanocomposites are investigated using nanoindentation and nanoscratch methods. The Halpin-Tsai model for predicting the elastic modulus and hardness is modified to include the effective aspect ratio factor. The modified model predicts the experimental results more accurately. The frictional behavior is investigated and a new equation is proposed that correlates the ploughing friction with the plasticity index. The dispersion state of MWNTs and the surface features of residual grooves are investigated using scanning electron micrographs and AFM profiles. The mechanisms of improvements in the properties are also discussed.

Original languageEnglish
JournalMacromolecular Materials and Engineering
Volume297
Issue number7
Pages (from-to)689-701
ISSN1438-7492
DOIs
Publication statusPublished - 2012
Externally publishedYes

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