润滑科技信息平台

Ultra-dispersive sulfonated graphene as water-based lubricant additives for enhancing tribological performance

出版日期: 2022

DOI: 10.1016/j.triboint.2022.107759

作者: Wu, Lupeng; Zhong, Yi; Yuan, Haoyu; Liang, Hui; Wang, Fei; Gu, Le;

The weak dispersion stability of graphene in water restricts its practical application as water-based lubricant additives. Herein, sulfonated graphene (SGO) with ultra-dispersive and superior lubrication performance was synthesized by means of sulfonating graphene oxide (GO). It was found that SGO was well dispersed in water. Besides, viscosity of water was enhanced by 25.8 % after adding 0.2 wt. % of SGO, which might be favorable to enhance film thickness between tribo-pairs. Furthermore, SGO lubrication contributed to significant reduction in friction coefficient (CoF) and wear scar diameter (WSD) by 74 % and 15.7 %, respectively. SGO exhibited the better lubricity in comparison to GO, which could be ascribed to that adsorption ability of -SO3H groups was stronger than that of -OH and -COOH groups.

Behaviors of Assembly Gravity Expansion Foundation for Onshore Wind Turbines Under Extreme Load Conditions

Pub Date: 2022 DOI: 10.1016/j.triboint.2022.107759

[Wang, Rui, Zhang, Dongliang, Wu, Xiangguo, Wang, Fei, Li, Tianhao, Fu, Kun, Zhao, Chu, Zhou, Zheng, Zhu, Hongbing, Zhang, Mingyi, Liu, Wantong, Jing, Zhong]

Shear Behavior Solution of the Shear Keyed Joints for Onshore Wind Foundation

Pub Date: 2022 DOI: 10.1016/j.triboint.2022.107759

[Wang, Rui, Zhang, Dongliang, Wu, Xiangguo, Wang, Fei, Li, Tianhao, Fu, Kun, Liu, Wantong, Zhao, Chu, Huang, Cirong, Zhong, Jing, Huang, Qiang, Zhang, Mingyi]

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Pub Date: 2022 DOI: 10.1016/j.triboint.2022.107759

[Cai, Zhaobing, Mao, Jingsheng, Wang, Zheng, Guo, Wuming, Chen, Feihuan, Dong, Yinghui, Zhang, Po, Gu, Le]