Environmentally-adaptive epoxy lubricating coating using self-assembled pMXene@polytetrafluoroethylene core-shell hybrid as novel additive
Environmentally-adaptive epoxy lubricating coating using self-assembled pMXene@polytetrafluoroethylene core-shell hybrid as novel additive
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DOI：
10.1016/j.carbon.2021.07.102
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发表时间：
2021-10
期刊：
影响因子：
10.9
通讯作者：
Yawen Yang;Gaochuang Yang;Kaiming Hou;Honggang Wang;Na Wang;Shengrong Yang;Jinqing Wang
中科院分区：
文献类型：
--
作者：
Yawen Yang;Gaochuang Yang;Kaiming Hou;Honggang Wang;Na Wang;Shengrong Yang;Jinqing Wang
在这项工作中，通过剥离的MXene纳米片自组装包裹的PTFE纳米颗粒，设计并合成了一种新型润滑添加剂。然后将pMXene @ PTFE杂化物引入环氧树脂涂层中并涂覆到基材上。与PTFE的复合材料将有效地减轻MXene片材的氧化。研究结果表明，环氧基复合涂层在干空气、湿空气（RH = 80%）、真空（3 × 10− 5 Mbar）环境下均具有优异的减摩耐磨性能，实现了多环境稳定性二元复合涂层。复合涂层性能的提高主要取决于以下几点：（a）MXene片材与PTFE核壳结构杂化添加剂的润滑协同作用;（B）复合添加剂在环氧基体中良好的分散性和附着力;（c）在上对应物上形成保护膜。摩擦结果表明，自组装的pMXene @PTFE环氧涂层在多种环境下均能显著提高润滑和抗磨性能，为新型高性能环境不敏感添加剂的设计和应用提供了一个很有前景的平台。
In this work, a novel lubricating additive was designed and synthesized via self-assembling of wrapped PTFE nanoparticles by exfoliated MXene nanosheets. Then thepMXene@polytetrafluoroethylene (pMXene@PTFE) hybrid was introduced into epoxy coating and painted to substrate. The composite with PTFE would effectively alleviate the oxidation of MXene sheets. The research results show that the epoxy-based composite coating has excellent friction-reduction and wear-resistance properties in dry air, humid air (RH = 80%), and vacuum (3 × 10−5Mbar) environments, achieving multi-environmental stability binary composite coating. The performance improvement of composite coating mainly depends on the following points: (a) the lubricating synergistic effect of MXene sheets and PTFE hybrid additive with core-shell structure; (b) the good dispersibility and adhesion of composite additive in the epoxy matrix; (c) the formation of protective film on the upper counterpart. The obtained friction results demonstrate that self-assembledpMXene@PTFE epoxy coatings greatly enhance the lubricating and anti-wear properties in multiple environments, establishing a promising platform for the design and application of novel high-performance additive with environmental insensitivity.