Macroscale superlubricity of steel by polymer-based ionic liquids without a running-in period

Green Sorbitol-Based Deep Eutectic Solvents Enabling Near Zero-Wear of Steel–Steel Tribopairs

“…It is considered as an internal resistance during fluid flowing and has a significant impact on the lubricating ability of liquid materials. 43 As shown in Figure 2c, the viscosity of Sor-based DESs decreases gradually as the temperature increases. This is caused by the destruction of the hydrogen-bond networks at high temperatures.…”

“…Viscosity is a typical characteristic parameter for liquid materials and reflects the intermolecular interactions of molecules. It is considered as an internal resistance during fluid flowing and has a significant impact on the lubricating ability of liquid materials . As shown in Figure c, the viscosity of Sor-based DESs decreases gradually as the temperature increases.…”

Advanced research and prospects on polymer ionic liquids: trends, potential and application

“…There are also new (and prospective) works that were not included in the thematic sections of this review (see above). [74][75][76][77] In this section, some of these studies are discussed in more detail.…”

“…The PILs series with a flexible and electron-rich polymer chain attached to the cation was developed as lubricants for steel-to-steel systems. 76 Compared with widely used poly-alpha-olefin and commercial lubricants, PILs-lubricants have markedly lower friction and better surface protection. Macroscale superlubricity for PILs based on 2,5-furandicarboxylic acid is achieved without a run-in period at 75 °C and above.…”

3D mesoporous polycalix-functionalized dual Brønsted–Lewis acidic double-charged DABCO-based ionic liquid: a powerful and recyclable supramolecular polymeric catalyst for the synthesis of spiro-fused[4H-pyran]

“…23 Also, PSILs are a developing trend as they include the unique features of ILs, i.e., mechanical and thermal stability, nonflammability, low volatility, and high activity under mild conditions that enhance the ability of the process. 24,25 Over recent decades, many attempts have been made to use PSILs as antimicrobial reagents 26 and lubricants, 27 in fuel desulfurization, 28 and as catalysts for different purposes 24,29 as well as in metal separation, 30 as adsorbents, 31 and so on.…”