Mucus-inspired functionalized ionic liquid/carnauba wax composite polyurethane with friction-driven underwater multi-lubrication

IF 8.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Friction Pub Date : 2026-03-16 DOI:10.26599/frict.2026.9441245

Shaoqian Qin, Zhiwei Guo, Zumin Wu, Chengqing Yuan

引用次数: 0

Abstract

Achieving stable and long-lasting low friction and extended lifespan for polymeric components in underwater mechanical systems remains challenging. Inspired by the low friction and efficient lubrication provided by the mucus secreted on fish skin, this study fabricated the bioinspired functionalized ionic liquid/carnauba wax (IL-SiO₂/CW) reinforced polyurethane composites (PUCW-ILs) and investigated its properties. The results demonstrate that PUCW-1.5ILs, with a 1.5 wt.% addition ratio, achieved stable and persistent low friction and wear performance: an average coefficient of friction as low as 0.07 and an average wear loss of 0.006 g at 0.5 MPa (decreased 81% and 84.2% compared to PU respectively). This superior performance stems from the enhanced shear resistance of the matrix by IL-SiO₂, the formation of stable lubricating and transfer films at the interface by both CW and IL-SiO₂ and the hydration effect of IL-SiO₂.

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黏液启发的功能化离子液体/巴西棕榈蜡复合聚氨酯，具有摩擦驱动的水下多重润滑

在水下机械系统中实现稳定、持久的低摩擦和延长聚合物组件的使用寿命仍然是一个挑战。利用鱼皮分泌的黏液提供的低摩擦和高效润滑特性，制备了仿生功能化离子液体/巴西棕榈蜡（IL-SiO2/CW）增强聚氨酯复合材料（PUCW-ILs），并对其性能进行了研究。结果表明，puw -1.5 il在添加量为1.5 wt.%时，获得了稳定且持久的低摩擦磨损性能：在0.5 MPa下，平均摩擦系数低至0.07，平均磨损损失为0.006 g（分别比PU降低81%和84.2%）。这种优异的性能源于IL-SiO2增强了基体的抗剪切能力、CW和IL-SiO2在界面处形成稳定的润滑和传递膜以及IL-SiO2的水化作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Friction Engineering-Mechanical Engineering

CiteScore

12.90

自引率

13.20%

发文量

324

审稿时长

13 weeks

期刊介绍： Friction is a peer-reviewed international journal for the publication of theoretical and experimental research works related to the friction, lubrication and wear. Original, high quality research papers and review articles on all aspects of tribology are welcome, including, but are not limited to, a variety of topics, such as: Friction: Origin of friction, Friction theories, New phenomena of friction, Nano-friction, Ultra-low friction, Molecular friction, Ultra-high friction, Friction at high speed, Friction at high temperature or low temperature, Friction at solid/liquid interfaces, Bio-friction, Adhesion, etc. Lubrication: Superlubricity, Green lubricants, Nano-lubrication, Boundary lubrication, Thin film lubrication, Elastohydrodynamic lubrication, Mixed lubrication, New lubricants, New additives, Gas lubrication, Solid lubrication, etc. Wear: Wear materials, Wear mechanism, Wear models, Wear in severe conditions, Wear measurement, Wear monitoring, etc. Surface Engineering: Surface texturing, Molecular films, Surface coatings, Surface modification, Bionic surfaces, etc. Basic Sciences: Tribology system, Principles of tribology, Thermodynamics of tribo-systems, Micro-fluidics, Thermal stability of tribo-systems, etc. Friction is an open access journal. It is published quarterly by Tsinghua University Press and Springer, and sponsored by the State Key Laboratory of Tribology (TsinghuaUniversity) and the Tribology Institute of Chinese Mechanical Engineering Society.