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Hydroxyl-terminated ionic liquids functionalized graphene oxide with good dispersion and lubrication function
Tribology International ( IF 6.2 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.triboint.2020.106350
Chaoliang Gan , Ting Liang , Wen Li , Xiaoqiang Fan , Xia Li , Dongshan Li , Minhao Zhu

Abstract Multilayer graphene oxide (MGO) as water-based lubricant additive has promising prospect, however, its dispersity and lubricity still need to be enhanced for the practical application. Herein, hydroxyl-terminated ionic liquids coupling agents (ILCAs) are used for functionalizing MGO, the as-prepared functionalized GO (ILCAs-GO) shows better dispersity in water and better lubricity than pristine MGO. Surface analysis reveals ILCAs-GO sheets can continuously deposit on the worn surface during the friction process via the electrostatic adsorption of ILCAs-GO and metal ions. These continuously deposited sheets can heal the damaged transfer film and increase the wettability of water on friction pairs, meaning the self-healing and self-wetting functions are realized which provides the effective protection for the tribo-pairs thus reducing wear of materials.

中文翻译:

具有良好分散和润滑功能的端羟基离子液体功能化氧化石墨烯

摘要 多层氧化石墨烯(MGO)作为水基润滑添加剂具有广阔的应用前景,但其分散性和润滑性仍需进一步提高以实现实际应用。在此,羟基封端的离子液体偶联剂(ILCAs)用于功能化MGO,所制备的功能化GO(ILCAs-GO)在水中表现出更好的分散性和比原始MGO更好的润滑性。表面分析表明,ILCAs-GO 片可以通过 ILCAs-GO 和金属离子的静电吸附在摩擦过程中连续沉积在磨损表面。这些连续沉积的片材可以修复损坏的转移膜并增加水对摩擦副的润湿性,
更新日期:2020-08-01
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