Self-lubricating polytetrafluoroethylene/polyimide blends reinforced with zinc oxide nanoparticles

Liwen Mu, Jiahua Zhu, Jingdeng Fan, Zhongxin Zhou, Yijun Shi, Xin Feng, Huaiyuan Wang, Xiaohua Lu

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

ZnO nanoparticle reinforced polytetrafluoroethylene/polyimide (PTFE/PI) nanocomposites were prepared and their corresponding tribological and mechanical properties were studied in this work. The influences of ZnO loading, sliding load, and velocity on the tribological properties of ZnO/PTFE/PI nanocomposites were systematically investigated. Results reveal that nanocomposites reinforced with 3 wt% ZnO exhibit the optimal tribological and mechanical properties. Specifically, the wear loss decreased by 20% after incorporating 3 wt% ZnO compared to unfilled PTFE/PI. Meanwhile, the impact strength, tensile strength, and elongation-at-break of 3 wt% ZnO/PTFE/PI nanocomposite are enhanced by 85, 5, and 10% compared to pure PTFE/PI blend. Microstructure investigation reveals that ZnO nanoparticles facilitate the formation of continuous, uniform, and smooth transfer film and thus reduce the adhesive wear of PTFE/PI.

Original languageEnglish
Article number545307
JournalJournal of Nanomaterials
Volume2015
DOIs
StatePublished - 2015

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