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Poly(alkylimidazolium bis(trifluoromethylsulfonyl) imide)-Based Polymerized Ionic Liquids: A Potential  High-Performance Lubricating Grease
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Maskinelement. Nanjing Tech University, Nanjing, China.ORCID-id: 0000-0001-6137-5349
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Maskinelement.
Nanjing Tech University, Nanjing, China.
Nanjing Tech University, Nanjing, China.
Vise andre og tillknytning
2019 (engelsk)Inngår i: Advanced Materials Interfaces, ISSN 2196-7350, Vol. 6, nr 5, artikkel-id 1801796Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Polymers prepared from ionic liquids are widely called polymerized ionic liquids (PILs). Compared to monocationic and dicationic ILs, PILs have higher molecular weights, charge, and greater intermolecular interactions, which make PILs have a higher possibility to generate better lubricity. PILs of poly‐alkylimidazolium bis(trifluoromethylsulfonyl)imide (PImC6NTf2) is studied herein. Dicationic ILs of 1,1′‐(pentane‐1,5‐diyl)‐bis(3‐butylimidazolium) bis(trifluoromethylsulfonyl)imide (BIm5‐(NTf2)2) is used as additive to decrease the crystallization temperature of PImC6NTf2. Lubricity of PImC6NTf2 and PImC6NTf2+BIm5‐(NTf2)2, as well as BIm5‐(NTf2)2 for comparison is evaluated under severe conditions, i.e., 3.0 to 3.5 GPa and 200 °C. The rheological study suggests that PImC6NTf2 can be classified into grease. Tribological test results show that PImC6NTf2 has much better antiwear property than BIm5‐(NTf2)2, especially at 3.5 GPa. Adding 4% BIm5‐(NTf2)2 to PImC6NTf2 is able to reduce friction under high pressure. At 200 °C, PImC6NTf2 exhibits excellent lubricity. The mixture of 96%PImC6NTf2+4%BIm5‐(NTf2)2 shows even better antiwear property than neat PImC6NTf2 and exhibits the highest friction reducing property among the ILs at 200 °C. It is speculated that the robust strength of PILs and strong adhesion between PILs and solids are key factors in achieving the excellent antiwear property.

sted, utgiver, år, opplag, sider
John Wiley & Sons, 2019. Vol. 6, nr 5, artikkel-id 1801796
Emneord [en]
grease, high pressure and high temperature, lubricity, polymerized ionic liquids
HSV kategori
Forskningsprogram
Maskinelement
Identifikatorer
URN: urn:nbn:se:ltu:diva-72623DOI: 10.1002/admi.201801796ISI: 000460657100002OAI: oai:DiVA.org:ltu-72623DiVA, id: diva2:1280468
Merknad

Validerad;2019;Nivå 2;2019-03-11 (johcin)

Tilgjengelig fra: 2019-01-18 Laget: 2019-01-18 Sist oppdatert: 2019-06-14bibliografisk kontrollert
Inngår i avhandling
1. Improving the Lubricating Performance of Ionic Liquids for Different Contacts
Åpne denne publikasjonen i ny fane eller vindu >>Improving the Lubricating Performance of Ionic Liquids for Different Contacts
2019 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Alternativ tittel[sv]
Förbättra smörjande prestanda av joniska vätskor för olika kontakter
sted, utgiver, år, opplag, sider
Luleå: Luleå University of Technology, 2019
Serie
Doctoral thesis / Luleå University of Technology 1 jan 1997 → …, ISSN 1402-1544
HSV kategori
Forskningsprogram
Maskinelement
Identifikatorer
urn:nbn:se:ltu:diva-73628 (URN)978-91-7790-364-2 (ISBN)978-91-7790-365-9 (ISBN)
Disputas
2019-06-20, E231, Luleå, 09:00 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2019-04-16 Laget: 2019-04-12 Sist oppdatert: 2019-06-14bibliografisk kontrollert

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