Improvement in the tribological properties of imidazolium‐derived ionic liquids by additive technology
Improvement in the tribological properties of imidazolium‐derived ionic liquids by additive technology
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DOI：
10.1002/jsl.49
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发表时间：
2008-04
期刊：
影响因子：
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通讯作者：
I. Minami;N. Watanabe;H. Nanao;S. Mori;K. Fukumoto;H. Ohno
中科院分区：
文献类型：
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作者：
I. Minami;N. Watanabe;H. Nanao;S. Mori;K. Fukumoto;H. Ohno
介绍了离子液体抗磨减摩添加剂的分子设计。在往复运动条件下，通过球-板摩擦试验评价了羧酸衍生添加剂的摩擦学性能。将N-苄基保护的天冬氨酸的四烷基铵盐和四烷基鏻盐溶于1-烷基-3-甲基咪唑衍生的离子液体中。它们显著地防止了磨损并相当地减少了摩擦。考察了咪唑分子中烷基对加和响应的影响。在四烷基铵衍生的离子液体中，添加剂在这些条件下降低磨损但不降低摩擦。N-乙酰基保护的谷氨酸盐可防止磨损，但不能减少摩擦。版权所有© 2008约翰威利父子有限公司。
Molecular design of wear-preventing and friction-reducing additives for ionic liquids is described. The tribological properties of carboxylic acid-derived additives were evaluated by a ball-on-flat type tribotest under reciprocating motion. Tetraalkylammonium and tetraalkylphosphonium salts of N-benzyl-protected aspartic acid were dissolved in 1-alkyl-3-methylimidazolium-derived ionic liquids. They prevented wear remarkably and reduced friction fairly. Influences of alkyl group in imidazolium molecule on additive response were observed. In tetraalkylammonium-derived ionic liquids, the additive reduced wear but did not reduce friction under these conditions. The salt of N-acetyl-protected glutamic acid prevented wear, but did not reduce friction. Copyright © 2008 John Wiley & Sons, Ltd.