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Polymers
Volume 15
Issue 11
10.3390/polym15112577
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Article

Improving Surface Wear Resistance of Polyimide by Inserting KH550 Grafted GO

by
Chen Liu
1,
Jingfu Song
2,
Gai Zhao
1,* and
Qingjun Ding
1
1
State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2
School of Naval Architecture & Ocean Engineering, Jiangsu Maritime Institute, Nanjing 211170, China
*
Author to whom correspondence should be addressed.
Polymers 2023, 15(11), 2577; https://doi.org/10.3390/polym15112577
Submission received: 5 May 2023 / Revised: 25 May 2023 / Accepted: 2 June 2023 / Published: 4 June 2023
(This article belongs to the Special Issue Advances in Tribology of Polymer Composites)
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Abstract

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.
Keywords: polyimide; molecular dynamics simulation; tribology; graphene oxide polyimide; molecular dynamics simulation; tribology; graphene oxide

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MDPI and ACS Style

Liu, C.; Song, J.; Zhao, G.; Ding, Q. Improving Surface Wear Resistance of Polyimide by Inserting KH550 Grafted GO. Polymers 2023, 15, 2577. https://doi.org/10.3390/polym15112577

AMA Style

Liu C, Song J, Zhao G, Ding Q. Improving Surface Wear Resistance of Polyimide by Inserting KH550 Grafted GO. Polymers. 2023; 15(11):2577. https://doi.org/10.3390/polym15112577

Chicago/Turabian Style

Liu, Chen, Jingfu Song, Gai Zhao, and Qingjun Ding. 2023. "Improving Surface Wear Resistance of Polyimide by Inserting KH550 Grafted GO" Polymers 15, no. 11: 2577. https://doi.org/10.3390/polym15112577

APA Style

Liu, C., Song, J., Zhao, G., & Ding, Q. (2023). Improving Surface Wear Resistance of Polyimide by Inserting KH550 Grafted GO. Polymers, 15(11), 2577. https://doi.org/10.3390/polym15112577

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