Bis(2-hydroxyethyl) ammonium stearate (DES) protic ionic liquid crystal (PILC) has been added in 1 wt% and 2 wt% proportion to di-bis(2-hydroxyethyl) ammonium succinate (DSU) protic ionic liquid (PIL) to obtain (DSU+1%DES) and (DSU+2%DES) lubricant blends. The new blends are non-Newtonian fluids with liquid crystalline domains. Addition of (DES) PILC to (DSU) PIL reduces running-in friction coefficient in more than 70% and prevents surface damage, decreasing wear rate in more than one order of magnitude. Optical profilometry, optical and scanning electron microscopy (SEM), energy dispersive (EDX) and X-ray photoelectron spectroscopy (XPS) have been used to analyze surfaces after the tribological tests.

硬脂酸双（2-羟乙基）铵（DES）质子性离子液晶（PILC）已按比例添加到琥珀酸二双（2-羟乙基）铵（DSU）质子离子液体（PIL）中获得（DSU + 1％DES）和（DSU + 2％DES）润滑剂混合物。新的混合物是具有液晶域的非牛顿流体。在（DSU）PIL中添加（DES）PILC可以将磨合摩擦系数降低70％以上，并防止表面损坏，从而将磨损率降低一个数量级以上。摩擦测试后，光学轮廓测定法，光学和扫描电子显微镜（SEM），能量色散（EDX）和X射线光电子能谱（XPS）已用于分析表面。