Research on Graphene Preparation by Liquid Phase Ultrasonic Exfoliation and Antifriction Performance in Water

Abstract:

The different layers of graphene were prepared by liquid ultrasonic direct exfoliation. The dispersion stability of graphene in water under different ultrasonic time, the antifriction Performance, and the elements and morphology of the wear surface are investigated. The wear mechanism of graphene solution was preliminarily discussed. The results indicate that graphene with thickness of 10nm-150nm can be produced by ultrasonic peeling expanded graphite and the dispersion stability of graphene aqueous is best when sonicating for 3h. The antifriction property and wear mechanism of graphene aqueous vary with the graphene content. When graphene content is 0.01wt%, the antifriction performance of graphene aqueous was optimum and its wear mechanism was abrasive wear.

• Periodical: Key Engineering Materials (Volumes 609-610)
• Pages: 218-224
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.609-610.218
• Online since: April 2014
• Authors: Hai Chao Zhao, Yu Lin Qiao*, Yan Zang
• Keywords: Expand Graphite, Friction Coefficient (FC), Graphene, Liquid Exfoliation

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