Poly(ionic liquid)s as lubricant additives with insight into adsorption-lubrication relationshipShow others and affiliations
2022 (English)In: Tribology International, ISSN 0301-679X, E-ISSN 1879-2464, Vol. 165, article id 107278Article in journal (Refereed) Published
Abstract [en]
Ionic liquids (ILs) are very potential lubricant additives for their strong adsorption and tribochemical reactions at the interface. In this work, poly(ionic liquid) of PImC6NTf2 is used as lubricant additive in base oil of PEG, which can reduce the wear volume by around 65 times under 2.5 GPa. The lubricity is much more advantageous than the geminal dicationic IL of BIm5-(NTf2)2. The adsorption strength of lubricants is studied by employing the microcalorimeter to evaluate the adsorption heat, AFM to test the adhesion force, and molecular dynamics simulation to calculate the interfacial binding energy. As a result, the adsorption strength of PImC6NTf2 is obviously higher than BIm5-(NTf2)2, and the lubricity is strongly dependent on the adsorption strength of ILs.
Place, publisher, year, edition, pages
Elsevier, 2022. Vol. 165, article id 107278
Keywords [en]
Lubricant additive, Poly(ionic liquid)s, Friction and wear, Adsorption
National Category
Other Mechanical Engineering
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-87126DOI: 10.1016/j.triboint.2021.107278ISI: 000704334400002Scopus ID: 2-s2.0-85114990602OAI: oai:DiVA.org:ltu-87126DiVA, id: diva2:1595534
Funder
The Kempe Foundations, JCK-1903.1, SMK-1944Swedish Research Council Formas, 2019-00904Swedish Research Council, 2019-04941Swedish Energy Agency, 2018-003910
Note
Validerad;2021;Nivå 2;2021-09-20 (alebob);
Forskningsfinansiär: National Natural Science Foundation of China, China (No. 21908093); China Postdoctoral Science Foundation funded project, China (No. 2020M671461, 2021M691554)
2021-09-202021-09-202025-02-14Bibliographically approved