Laxative Inspired Ionic Liquid Lubricants with Good Detergency and No Corrosion
Laxative Inspired Ionic Liquid Lubricants with Good Detergency and No Corrosion
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泻药离子液体润滑剂，去污力好，无腐蚀
DOI：
10.1021/am4049332
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发表时间：
2014-03-12
影响因子：
9.5
通讯作者：
Liu, Weimin
中科院分区：
文献类型：
--
作者：
Fan, Mingjin;Song, Zenghong;Liu, Weimin
以廉价易得的通便药琥珀酸二辛酯磺酸钠（NaDOSS）为原料，合成了1-烷基-3-甲基咪唑双（2-乙基己基）琥珀酸酯磺酸盐（L-DOSS 10 n，n = 2，4，8）离子液体（ILs）。与传统的离子液体如1-丁基-3-甲基咪唑四氟硼酸盐（L-B104）和1-丁基-3-甲基咪唑双（三氟甲基磺酰基）-酰亚胺（L-F104）相比，由于它们的无卤素特性，离子液体显示出更低的腐蚀水平和更高的水解稳定性。在各种接触条件下，其摩擦学性能也优于L-B104和L-F104。因此，它们可以作为常规IL润滑剂的替代品，这可以解决常规IL润滑剂在工业应用中的腐蚀和高成本问题。焦化试验结果表明，合成的清净剂具有良好的清净性能。因此，这些离子液体可用作润滑剂，其抑制滑动过程中金属触点上的碳沉积以及油泥和清漆形成。此外，合成的Its可以分散，疏松和去除已经形成的有害物质，保持金属触点清洁。
1-Alkyl-3-methylimidazolium bis(2-ethylhexyl)-sulfosuccinate (L-DOSS10n, n = 2, 4, 8) ionic liquids (ILs) were synthesized from dioctyl sodium sulfosuccinate (NaDOSS), which is a cheap, bulk available laxative medicine used for the treatment of constipation. The ILs showed lower corrosion levels and higher hydrolysis stabilities than conventional ILs such as 1-butyl-3-methyl imidazolium tetrafluoroborate (L-B104) and 1-butyl-3-methyl imidazolium bis(trifluoromethylsulfonyl)-imide (L-F104) due to their halogen-free characteristic. The tribological properties of the Its were also better than those of L-B104 and L-F104 for various contacts. Thus, they can be used as replacements for conventional IL lubricants, which may solve the problems of corrosion and high cost to put conventional IL lubricants into industrial application. Coking test results indicated that the synthesized Its have high deterging ability. Thus, these ILs may be used as lubricants that restrain carbonaceous deposition as well as oil sludge and varnish formation on the metal contacts during the sliding process. Moreover, the synthesized Its can disperse, loosen, and remove the already formed harmful substances and keep the metal contacts clean.