Yawen Zhang , Chengyi Si , Zhongpan Zhang , Le Li , Xiaoqiang Fan , Minhao Zhu
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引用次数: 0
摘要
自润滑涂层因其显著的摩擦学性能而引发了广泛的研究兴趣。然而，传统的基于微胶囊的自润滑涂层仍然面临着长期适用性和防腐性能差的挑战。本文基于分层设计和能量磨损理论，提出了一种新型自润滑环氧树脂涂层。通过溶剂蒸发法制备了含有聚α烯烃（PAO40）的微胶囊（MC）。然后将具有高导热性的 Ti3C2Tx MXene（T）加入 MC 增强环氧树脂涂层（EP）中，构建了新型自润滑 EP 涂层（T-MC-EP）。与 EP 涂层相比，T-MC-EP 涂层的导热率提高了 79.4%。有限元分析表明，T 在涂层中构建了导热网络，成为主要的热载体。此外，磨损率降低了 91.2%，这主要归功于摩擦过程中润滑油膜的形成以及摩擦热引起的环氧树脂分子氧化断裂的减少。经过 31 天的盐雾测试后，T-MC-EP 涂层还表现出卓越的防腐蚀性能。这项研究为多功能涂层的设计提供了创新见解，包括优异的机械、热、摩擦学和防腐蚀性能。
Hierarchical design of microcapsules-based epoxy resin coating enhanced with Ti3C2Tx for improving thermal, tribological, anti-corrosive performance
Self-lubricating coating has sparked significant research interest due to its remarkable tribology performance. However, traditional microcapsules-based self-lubricating coating still faces challenges in long-term serviceability and poor anti-corrosion performance. In this paper, a novel self-lubricating epoxy resin coating was proposed based on hierarchical design and energy wear theory. Microcapsules (MC) containing Polyalphaolefin (PAO40) were prepared via the solvent evaporation approach. Ti3C2Tx MXene (T) with high thermal conductivity was then incorporated into the MC-enhanced epoxy resin coating (EP) to construct the novel self-lubricating EP coating (T-MC-EP). Compared to the EP coating, the thermal conductivity of the T-MC-EP coating increased by 79.4%. Finite element analysis indicated that T constructed thermally conductive network in the coating, serving as the main heat carrier. Furthermore, the wear rate decreased by 91.2%, primarily attributed to the formation of lubricating oil film during friction and the reduction of epoxy resin molecular oxidation fracture caused by friction heat. After 31 days of salt spray testing, the T-MC-EP coating also exhibited superior anti-corrosion performance. This work provides an innovative insight into designing multifunctional coating, including excellent mechanical, thermal, tribological, and anti-corrosive performance.
期刊介绍：
The journal Carbon is an international multidisciplinary forum for communicating scientific advances in the field of carbon materials. It reports new findings related to the formation, structure, properties, behaviors, and technological applications of carbons. Carbons are a broad class of ordered or disordered solid phases composed primarily of elemental carbon, including but not limited to carbon black, carbon fibers and filaments, carbon nanotubes, diamond and diamond-like carbon, fullerenes, glassy carbon, graphite, graphene, graphene-oxide, porous carbons, pyrolytic carbon, and other sp2 and non-sp2 hybridized carbon systems. Carbon is the companion title to the open access journal Carbon Trends. Relevant application areas for carbon materials include biology and medicine, catalysis, electronic, optoelectronic, spintronic, high-frequency, and photonic devices, energy storage and conversion systems, environmental applications and water treatment, smart materials and systems, and structural and thermal applications.
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