TY - JOUR
T1 - Surface characterization and tribological behavior of graphene-reinforced cellulose composites prepared by large-area spray coating on flexible substrate
AU - Shi, Shih Chen
AU - Wang, Chih Chia
AU - Cheng, Yung Chen
AU - Lin, Yue Feng
N1 - Funding Information:
Acknowledgments: The authors also thank the National Cheng Kung University Library for the funding support and the Center for Micro/Nano Science and Technology and Instrument Center, National Cheng Kung University (NCKU) for technical support.
Funding Information:
Funding: The authors gratefully acknowledge the financial supports for this project from the Ministry of Science and Technology in Taiwan (MOST 106-2221-E-006-092-MY3 and MOST 109-2221-E-006-046).
PY - 2020/12
Y1 - 2020/12
N2 - A large-area spray coating process is introduced to efficiently apply a graphene/Cu/cellulose composite on a flexible glass substrate. The dispersion characteristics of nano-additives are measured and the Tyndall effect observed. The characteristics of the composite coating such as the film thickness, surface roughness, water contact angle, and lubricating characteristics are measured. The tribological properties of the composite coating are measured using a ball-on-disk. The wear width of the abrasive parts, as well as the wear and friction coefficient of the grinding balls, are investigated. Adding graphene/Cu helps to improve the anti-wear ability of cellulose. The transfer layer was observed using the Raman spectroscopy and mapping technology. Finally, the lubricating mechanism is discussed, and the wear mechanism is proposed. Nanoparticles existed in the wear track as the third-body particles and improved the load capacity of the composites. The wear mechanism of the composites is discussed in terms of the worn surfaces and the analysis of the transfer film with the third-body approach.
AB - A large-area spray coating process is introduced to efficiently apply a graphene/Cu/cellulose composite on a flexible glass substrate. The dispersion characteristics of nano-additives are measured and the Tyndall effect observed. The characteristics of the composite coating such as the film thickness, surface roughness, water contact angle, and lubricating characteristics are measured. The tribological properties of the composite coating are measured using a ball-on-disk. The wear width of the abrasive parts, as well as the wear and friction coefficient of the grinding balls, are investigated. Adding graphene/Cu helps to improve the anti-wear ability of cellulose. The transfer layer was observed using the Raman spectroscopy and mapping technology. Finally, the lubricating mechanism is discussed, and the wear mechanism is proposed. Nanoparticles existed in the wear track as the third-body particles and improved the load capacity of the composites. The wear mechanism of the composites is discussed in terms of the worn surfaces and the analysis of the transfer film with the third-body approach.
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U2 - 10.3390/coatings10121176
DO - 10.3390/coatings10121176
M3 - Article
AN - SCOPUS:85097158749
VL - 10
SP - 1
EP - 11
JO - Coatings
JF - Coatings
SN - 2079-6412
IS - 12
M1 - 1176
ER -