Surface Characterization and Tribological Behavior of Graphene-Reinforced Cellulose Composites Prepared by Large-Area Spray Coating on Flexible Substrate
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 thicknes...
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doaj-bb27433793dc4cceba77dfa18f6ce2682020-12-02T00:01:17ZengMDPI AGCoatings2079-64122020-12-01101176117610.3390/coatings10121176Surface Characterization and Tribological Behavior of Graphene-Reinforced Cellulose Composites Prepared by Large-Area Spray Coating on Flexible SubstrateShih-Chen Shi0Chih-Chia Wang1Yung-Chen Cheng2Yue-Feng Lin3Department of Mechanical Engineering, National Cheng Kung University, Tainan 70101, TaiwanDepartment of Chemical and Materials Engineering, Chung Cheng Institute of Technology, National Defense University, Taoyuan 33509, TaiwanDepartment of Materials Science, National University of Tainan, Tainan 70005, TaiwanDepartment of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 41170, TaiwanA 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.https://www.mdpi.com/2079-6412/10/12/1176tribologyweargraphenecelluloselarge areaspray coating |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Shih-Chen Shi Chih-Chia Wang Yung-Chen Cheng Yue-Feng Lin |
spellingShingle |
Shih-Chen Shi Chih-Chia Wang Yung-Chen Cheng Yue-Feng Lin Surface Characterization and Tribological Behavior of Graphene-Reinforced Cellulose Composites Prepared by Large-Area Spray Coating on Flexible Substrate Coatings tribology wear graphene cellulose large area spray coating |
author_facet |
Shih-Chen Shi Chih-Chia Wang Yung-Chen Cheng Yue-Feng Lin |
author_sort |
Shih-Chen Shi |
title |
Surface Characterization and Tribological Behavior of Graphene-Reinforced Cellulose Composites Prepared by Large-Area Spray Coating on Flexible Substrate |
title_short |
Surface Characterization and Tribological Behavior of Graphene-Reinforced Cellulose Composites Prepared by Large-Area Spray Coating on Flexible Substrate |
title_full |
Surface Characterization and Tribological Behavior of Graphene-Reinforced Cellulose Composites Prepared by Large-Area Spray Coating on Flexible Substrate |
title_fullStr |
Surface Characterization and Tribological Behavior of Graphene-Reinforced Cellulose Composites Prepared by Large-Area Spray Coating on Flexible Substrate |
title_full_unstemmed |
Surface Characterization and Tribological Behavior of Graphene-Reinforced Cellulose Composites Prepared by Large-Area Spray Coating on Flexible Substrate |
title_sort |
surface characterization and tribological behavior of graphene-reinforced cellulose composites prepared by large-area spray coating on flexible substrate |
publisher |
MDPI AG |
series |
Coatings |
issn |
2079-6412 |
publishDate |
2020-12-01 |
description |
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. |
topic |
tribology wear graphene cellulose large area spray coating |
url |
https://www.mdpi.com/2079-6412/10/12/1176 |
work_keys_str_mv |
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