基于静电交联-盐析协同强化策略的仿生层状水凝胶超润滑涂层材料

基于晶域调控和界面裂纹抑制策略，结合非共价静电交联效应，设计制备了能够在极端复杂介质环境（盐溶液/酸碱）中，兼备抗溶胀、高承载和长效超润滑性能的聚合物涂层材料。该材料实现了在含有多种离子共存的盐溶液中长期浸泡后（>450天），力学性能保持稳定；能够在高接触应力工况下，适应与粗糙金属对偶的剪切，突破了与粗糙对偶之间的长效耐磨。以磷酸盐缓冲盐水（PBS）为润滑介质，该材料能够在2.8 MPa应力工况下展现出长效超润滑特征（100000往复滑动循环，COF:0.0084）。可在陶瓷、钛合金等多种材质的器械表面实现涂层化制造，界面结合强度优异，为发展适用于极端介质工况的部件超润滑涂层提供了新的设计思路。相关成果发表在Matter（2025, 8(11): 102317）上。Based on crystal domain regulation and interfacial crack suppression strategies combined with non-covalent electrostatic crosslinking effects, a polymer coating material was designed and fabricated. This material simultaneously exhibits swelling resistance, high load-bearing capacity and long-term super-lubricating performance in extremely complex media environments including salt solutions, acidic and alkaline conditions. It maintains stable mechanical properties after long-term immersion (over 450 days) in salt solutions containing multiple coexisting ions, and can withstand shear against rough metal counterparts under high contact stress operating conditions, breaking through the long-term wear limitation when paired with rough counterparts. When using phosphate-buffered saline (PBS) as the lubricating medium, this material displays long-term super-lubricating performance under 2.8 MPa stress, with 100,000 reciprocating sliding cycles and a coefficient of friction (COF) of 0.0084. It can be fabricated into coatings on the surfaces of devices made of various materials such as ceramics and titanium alloys, with excellent interfacial bonding strength, providing a novel design concept for developing super-lubricating coatings for components operating under extreme media conditions. Relevant research findings have been published in Matter (2025, 8(11): 102317).

搜集汇总

背景与挑战

背景概述

该数据集聚焦于一种仿生层状水凝胶超润滑涂层材料，采用静电交联-盐析协同强化策略设计，旨在极端复杂介质环境中实现抗溶胀、高承载和长效超润滑性能。具体表现为在盐溶液中长期浸泡后力学性能稳定，能在高应力下与粗糙对偶进行长效耐磨，并在PBS润滑介质中展现出超低摩擦系数和优异循环耐久性，适用于多种材质涂层化制造。