TY - JOUR
T1 - Mechanochemical in-situ construction of ionic liquid-functionalized covalent organic frameworks for anti-wear and friction reduction
AU - Ye, Qian
AU - Yan, Yaojie
AU - Zhang, Xiaozhi
AU - Chen, Xin
AU - Bai, Wei
AU - Liu, Shujuan
AU - Zhou, Feng
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/11
Y1 - 2023/11
N2 - Herein, ionic liquid-functionalized covalent organic frameworks (COFs) were prepared via mechanochemical reaction. The rich-aldehyde terminated COFs (LZU1) was firstly synthesized via the excess aldehyde monomer and amino monomer. Then, the ionic liquid (NH2-IL) with amino group can graft onto the aldehyde terminated-COFs through Schiff base reaction between amino and aldehyde group driven by ball milling, and then through anion-exchange with NTf2- resulting in the ionic liquid-functionalized COFs (LZU1-NH2IL-NTf2). The LZU1-NH2IL-NTf2 displays good lubricating performance as lubricant additive, the friction coefficient is maintained at 0.106 and the wear volume is reduced by 85.4% compared with 500SN. The remarkable lubrication performance is mainly due to the physical adsorption film promoted by ionic liquid and the robust protective film formed by tribochemical reaction.
AB - Herein, ionic liquid-functionalized covalent organic frameworks (COFs) were prepared via mechanochemical reaction. The rich-aldehyde terminated COFs (LZU1) was firstly synthesized via the excess aldehyde monomer and amino monomer. Then, the ionic liquid (NH2-IL) with amino group can graft onto the aldehyde terminated-COFs through Schiff base reaction between amino and aldehyde group driven by ball milling, and then through anion-exchange with NTf2- resulting in the ionic liquid-functionalized COFs (LZU1-NH2IL-NTf2). The LZU1-NH2IL-NTf2 displays good lubricating performance as lubricant additive, the friction coefficient is maintained at 0.106 and the wear volume is reduced by 85.4% compared with 500SN. The remarkable lubrication performance is mainly due to the physical adsorption film promoted by ionic liquid and the robust protective film formed by tribochemical reaction.
KW - Covalent organic frameworks
KW - Ionic liquids functionalized
KW - Lubricant additives
KW - Mechanochemical reaction
UR - http://www.scopus.com/inward/record.url?scp=85174070962&partnerID=8YFLogxK
U2 - 10.1016/j.triboint.2023.109027
DO - 10.1016/j.triboint.2023.109027
M3 - 文章
AN - SCOPUS:85174070962
SN - 0301-679X
VL - 189
JO - Tribology International
JF - Tribology International
M1 - 109027
ER -