Fabrication and control of low frictional system combining ionic liqiuds and porous silica film

2016 Fiscal Year Final Research Report

• Project/Area Number: 26820034
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Design engineering/Machine functional elements/Tribology
• Research Institution: Tsuruoka National College of Technology
• Principal Investigator: Arafune Hiroyuki 鶴岡工業高等専門学校, その他部局等, 准教授 (90707811)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: イオン液体 / 多孔質材料 / イオンゲル

Outline of Final Research Achievements

In this study, lubrication properties of ionic liquids possessing high thermal stability and negligible volatility were examined. Lubrication properties of halogen-free ionic liquid, 3-ethyl-1-methylimidazolium methylphosphonate (EMIm-MePhos) at SiO2/SiO2 interfaces showed low friction compared to trifluorosulfonylimide salt with same cation.
An ionic liquid-type double network ion gel (DN ion gel) composed of an ionic liquid polymer polyDEMM-TFSI and polymethylmethacrylate was fabricated to examine the active control of lubrication properties. Obtained DN ion gel showed high compression strength (30 MPa) and thermal stability (5% weight loss temperature:320 degreesC). Sliding speed dependence of friction coefficient (stribeck curve) of DN ion gel slightly shifted to lower value as temperature increased. Such behavior was supposed to be due to the decrease of polymer adsorption on counter face, which was expected to be utilized for active lubrication control.

Free Research Field

分析化学、トライボロジー、高分子化学