受壁虎刚毛结构启发的具有增强摩擦学性能的碳纳米管-石墨烯

Carbon Nanotubes-Gr Inspired by Geckos' Setae Structure with Enhanced Tribological Properties.

作者信息

Zhang Jing, Sun Yang, Shang Fengqin, Yan Zihan, Yao Jiayu, Chen Binghuan, Shen Hangyan

机构信息

College of Materials and Chemistry, China Jiliang University, Hangzhou 310018, China.

School of Materials Science and Engineering, Tianjin University, Tianjin 300354, China.

出版信息

Materials (Basel). 2025 Mar 9;18(6):1221. doi: 10.3390/ma18061221.

DOI:10.3390/ma18061221

PMID:40141503

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11943471/

Abstract

The setae structure of geckos' toes can create a strong adhesion force, allowing geckos to climb almost vertical walls. Inspired by this, carbon nanotubes-graphite (CNTs-Gr) was prepared by microwave technology, where CNTs like the setae structure grew in situ on the surface of Gr flakes. Compared to the Gr, the coefficient of friction (COF) and wear rate of CNTs-Gr decreased by 44% and 46%, reaching 0.10 and 1.18 × 10 mm·N·m, respectively. Even if the load increased from 5 N to 35 N, the CNTs-Gr maintained a low and stable COF of 0.12. The excellent tribological properties were attributed to the unique setae structure of CNTs-Gr. This structure enabled the adhesion force of CNTs-Gr to the worn surface to increase threefold, improving the coverage of the lubricating film and significantly enhancing the lubricating film's pressure resistance. The gecko setae structure proposed in this article provides researchers with a new idea for designing lubricants with excellent lubrication performance and high load-bearing capacity.

摘要

壁虎脚趾的刚毛结构能够产生强大的附着力，使壁虎能够攀爬几乎垂直的墙壁。受此启发，采用微波技术制备了碳纳米管-石墨（CNTs-Gr），其中类似刚毛结构的碳纳米管在Gr薄片表面原位生长。与Gr相比，CNTs-Gr的摩擦系数（COF）和磨损率分别降低了44%和46%，分别达到0.10和1.18×10 mm·N·m。即使载荷从5 N增加到35 N，CNTs-Gr仍保持0.12的低且稳定的COF。其优异的摩擦学性能归因于CNTs-Gr独特的刚毛结构。这种结构使CNTs-Gr对磨损表面的附着力增加了三倍，提高了润滑膜的覆盖率，并显著增强了润滑膜的耐压性。本文提出的壁虎刚毛结构为研究人员设计具有优异润滑性能和高承载能力的润滑剂提供了新思路。