聚酰亚胺
石墨烯
氧化物
材料科学
摩擦系数
摩擦学
涂层
表面改性
复合材料
耐磨性
薄板电阻
纳米材料
图层(电子)
纳米技术
化学工程
冶金
工程类
作者
Chen Liu,Jingfu Song,Gai Zhao,Qingjun Ding
出处
期刊:Polymers
[MDPI AG]
日期:2023-06-04
卷期号:15 (11): 2577-2577
标识
DOI:10.3390/polym15112577
摘要
To improve the wear resistance of polyimide (PI), surface modification was developed. In this study, the tribological properties of graphene (GN), graphene oxide (GO), and KH550-grafted graphene oxide (K5-GO) modified PI were evaluated by molecular dynamics (MD) at the atomic level. The findings indicated that the addition of nanomaterials can significantly enhance the friction performance of PI. The friction coefficient of PI composites decreased from 0.253 to 0.232, 0.136, and 0.079 after coating GN, GO and K5-GO, respectively. Among them, the K5-GO/PI exhibited the best surface wear resistance. Importantly, the mechanism behind the modification of PI was thoroughly revealed by observing the wear state, analyzing the changes of interfacial interactions, interfacial temperature, and relative concentration.
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