Highly dispersed dialkyl dithiophosphate-functionalized ZIF-8 particles as additives of the lubricating oil

Purpose This paper aims to propose a new strategy to functionalize zeolitic imidazolate frameworks (ZIF-8) to improve its dispersion stability and tribological properties in lubricating oil. Design/methodology/approach Dialkyl dithiophosphate polydopamine ZIF-8 (DDP@PDA@ZIF-8) was prepared via mussel-inspired chemistry and the Michael addition reaction. The tribological properties of DDP@PDA@ZIF-8 as an additive in the white oil were evaluated with four-ball friction and wear tester at different temperatures. The worn surface was analyzed using X-ray photoelectron spectrum (XPS). Findings The as-prepared DDP@PDA@ZIF-8 shows high dispersion stability in the white oil. Tribological results confirmed that the DDP@PDA@ZIF-8 exhibited a small wear scar diameter at 25°C. However, excellent friction reduction and anti-wear properties were observed at 75°C. The XPS result indicates that a series of tribochemical reactions occurred on the worn surface, forming the complex protective film. Originality/value This paper provides a study of highly dispersed ZIF-8 as lubrication additives.

[1]  Haojie Song,et al.  Polydopamine-stabilized ZIF-8: improved water stability and lubrication performance , 2021, Applied Surface Science.

[2]  Jun Song.  Research Progress of Ionic Liquids as Lubricants , 2021, ACS omega.

[3]  Zhujun Li,et al.  Functionalised h‐BN as an effective lubricant additive in PAO oil for MoN coating sliding against Si3N4 ball , 2020, Lubrication Science.

[4]  Wei-min Liu,et al.  Dialkyl Dithiophosphate-Functionalized Gallium-Based Liquid-Metal Nanodroplets as Lubricant Additives for Antiwear and Friction Reduction , 2020 .

[5]  Jinxiang Dong,et al.  One-pot synthesis of SIB@ZIF-8 with enhanced anti-corrosion properties and excellent lubrication properties , 2020 .

[6]  W. Zhuang,et al.  Stable Dispersed Zeolitic Imidazolate Framework/Graphene Oxide Nanocomposites in Ionic Liquids Resulting in High Lubricating Performance , 2020, Advanced Materials Interfaces.

[7]  Haojie Song,et al.  Monodisperse Cu nanoparticles @ MoS2 nanosheets as a lubricant additive for improved tribological properties , 2019, Applied Surface Science.

[8]  Zan Liu,et al.  High performance of MOF-structured lubricating material with nano- and micro-sized morphologies , 2019, Materials Letters.

[9]  Jinxiang Dong,et al.  Tribological Properties of Typical Zeolitic Imidazolate Frameworks as Grease-Based Lubricant Additives , 2019, Journal of Materials Engineering and Performance.

[10]  Wei-min Liu,et al.  Physicochemistry aspects on frictional interfaces , 2017 .

[11]  Ichiro Minami,et al.  Molecular Science of Lubricant Additives , 2017 .

[12]  G. Dong,et al.  An investigation on the lubrication mechanism of MoS2 nano sheet in point contact: The manner of particle entering the contact area , 2017 .

[13]  Yuanjing Cui,et al.  Emerging Multifunctional Metal–Organic Framework Materials , 2016, Advanced materials.

[14]  Shaohui Li,et al.  A review of recent developments of friction modifiers for liquid lubricants (2007–present) , 2014 .

[15]  Hae‐Kwon Jeong,et al.  In situ synthesis of thin zeolitic-imidazolate framework ZIF-8 membranes exhibiting exceptionally high propylene/propane separation. , 2013, Journal of the American Chemical Society.

[16]  Zhijun Zhang,et al.  Preparation of Nickel-Based Nanolubricants via a Facile In Situ One-Step Route and Investigation of Their Tribological Properties , 2013, Tribology Letters.

[17]  R. Kreivaitis,et al.  Tribological properties of lubricant additives of Fe, Cu and Co nanoparticles , 2013 .

[18]  Lan-sun Zheng,et al.  Semiconductor@metal-organic framework core-shell heterostructures: a case of ZnO@ZIF-8 nanorods with selective photoelectrochemical response. , 2013, Journal of the American Chemical Society.

[19]  S. Rohani,et al.  In situ high pressure study of ZIF-8 by FTIR spectroscopy. , 2011, Chemical communications.

[20]  J. Jasinski,et al.  Structural evolution of zeolitic imidazolate framework-8. , 2010, Journal of the American Chemical Society.

[21]  Ping-yu Zhang,et al.  One step synthesis of ZnO nanoparticles from ZDDP and its tribological properties in steel-aluminum contacts , 2020 .

[22]  Jinxiang Dong,et al.  Synthesis and Tribological Properties of Zeolitic Imidazolate Framework-8 Nanocrystals and Microcrystals , 2015 .