Lithium-based ionic liquids functionalized by sym-triazine and cyclotriphosphazene as high temperature lubricants
Lithium-based ionic liquids functionalized by sym-triazine and cyclotriphosphazene as high temperature lubricants
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均三嗪和环三磷腈功能化的锂基离子液体作为高温润滑剂
DOI：
10.1016/j.triboint.2013.09.025
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发表时间：
2014-02-01
影响因子：
6.2
通讯作者：
Liu, Weimin
中科院分区：
文献类型：
--
作者：
Song, Zenghong;Liang, Yongmin;Liu, Weimin
以三（甲氧基乙氧基乙氧基）三嗪（C3 N3（OR）（3））和六（甲氧基乙氧基）环三磷腈（P3 N3（OR）（6））为原料，通过简单的共混，合成了两种锂基均三嗪或环三磷腈功能化离子液体（L-C3 N3和L-P3 N3）.对II.s作为Si 3 N4/钢接触的高温润滑剂进行了评价，发现与传统的烷基咪唑离子液体、1-乙基-3-甲基咪唑双（三氟甲基磺酰基）酰亚胺（L-F102）和1-丁基-3-甲基咪唑双（三氟甲基磺酰基）酰亚胺（L-F104）相比，在某些条件下具有显着改善的减摩和抗磨性能。用扫描电子显微镜（SEM）分析了磨损表面的形貌。通过X射线光电子能谱（XPS）分析，探讨了磨损机理。(C)2013爱思唯尔有限公司保留所有权利。
Two kinds of lithium-based and sym-triazine- or cyclotriphosphazene-functionalized ionic liquids (ILs, L-C3N3 and L-P3N3) were synthesized by simply blending an appropriate molar ratio of lithium bis (trifluoromethylsulfonyl)imide (LiTFSI) with tri(methoxyethoxyethoxyethoxy)triazine (C3N3(OR)(3)) or hexa (methoxyethoxyethoxyethoxy) cyclotriphosphazene (P3N3(OR)(6)). The II.s were evaluated as high temperature lubricants for Si3N4/steel contact and found to have significantly improved friction-reducing and anti-wear proprieties compared with conventional alkylimidazolium ILs, 1-ethyl-3-methylimidazolium bis(trifluoro methylsulfonyl)imide (L-F102) and 1-butyl-3-methylimidazolium bis(trifluoromethyl sulfonyl)imide (L-F104), at some condition. The morphologies of the worn surfaces were analyzed by scanning electron microscope (SEM). The wear mechanisms were discussed according to the surface composition analysis by Xray photoelectron spectroscopy (XPS). (C) 2013 Elsevier Ltd. All rights reserved.