Colloids and Surfaces B Biointerfaces, Journal Year: 2024, Volume and Issue: 240, P. 113993 - 113993
Published: May 27, 2024
Language: Английский
Carbon, Journal Year: 2024, Volume and Issue: 220, P. 118896 - 118896
Published: Feb. 1, 2024
Language: Английский
Citations
20
ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(30), P. 39896 - 39905
Published: July 16, 2024
The dispersion stability of nanomaterials in lubricants significantly influences tribological performance, yet their addition as lubricant additives often presents challenges secondary dispersion. Here, we present a straightforward method for situ preparation N,S-codoped CDs (N,S-CDs)-based using heterocyclic aromatic hydrocarbons containing N/S elements poly(ethylene glycol) (PEG) base oil by directional ultrasound strategy. Two types N,S-CDs were successfully prepared via the treatment PEG with benzothiazole (BTA) and benzothiadiazole (BTH) separately. resultant have uniform distribution N S maintain good colloidal even after 9 months storage. can enter surface gap friction pairs then induce tribochemical reaction. Benefiting from synergistic effect activating elements, robust stable protective film consisting iron sulfides, oxides, carbon nitrides, amorphous carbonaceous compounds is formed, thus endowing N,S-CDs-based improved antiwear friction-reducing performance. Compared pure PEG, coefficient (COF) N,S-CDs(BTH)-based decreased to 0.108 0.292, accompanied 91.2% reduction wear volume, maximum load carrying capacity increased 450 150 N.
Language: Английский
Citations
9
Chemistry of Materials, Journal Year: 2024, Volume and Issue: 36(10), P. 5110 - 5119
Published: May 14, 2024
Supramolecular oleogel is a promising lubricant, showing satisfactory lubrication performance and excellent stability. In this work, series of gallium-based liquid metal (GLM)-based nano-oleogels were prepared by combining alkylthiol self-assembled GLM nanodroplets (C12@GLM) α-lipoic acid ester-based dynamic covalently linked supramolecular gels. The disulfide bonds not only facilitate the formation dense gel networks but also hinder sedimentation nanoparticles forming coordinate with C12@GLM, thereby conferring great dispersion stability (more than 2 months). superior friction wear reduction [email protected] was observed, coefficient decreased to 0.108 from 0.216, volume loss reduced 73.04%, load carrying capacity increased 50 550 N, compared base oil. conjunction shear thinning creep recovery rheological properties nano-oleogels, mechanism studies revealed that are disrupted under shear, releasing oil nanoparticles. lubricating film assisted synergistic action nanoadditives lubricants, tribochemical reaction consisting iron oxides sulfides, along nanodroplets.
Language: Английский
Citations
8
Tribology International, Journal Year: 2024, Volume and Issue: 195, P. 109662 - 109662
Published: April 10, 2024
Language: Английский
Citations
7
Carbon, Journal Year: 2024, Volume and Issue: 230, P. 119578 - 119578
Published: Aug. 28, 2024
Language: Английский
Citations
7
Tribology International, Journal Year: 2024, Volume and Issue: 201, P. 110227 - 110227
Published: Sept. 10, 2024
Language: Английский
Citations
7
Progress in Organic Coatings, Journal Year: 2024, Volume and Issue: 194, P. 108578 - 108578
Published: June 8, 2024
Language: Английский
Citations
6
ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(12), P. 14443 - 14451
Published: June 13, 2024
Herein, garlic oil-functionalized onion-like carbon (OLC) nanoparticles were successfully prepared through a multistep process involving the carbonization of candle ash followed by surface modification. Initially, OLC was heat-treating under 450 °C and then grafting polyethylenimine (PEI) using epigallocatechin gallate (EGCG) as cross-linking agent. Subsequently, oil grafted onto PEI@OLC via aza-Michael reaction with PEI, thereby obtaining (GO@OLC). The GO@OLC exhibited enhanced lubrication properties lube additive, low coefficient friction (COF) 0.11 significant reduction 76.57% in wear volume. performance is credited to rolling effect repairing well formation complex protective layer GO@OLC-induced tribochemical reactions.
Language: Английский
Citations
6
ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: 6(16), P. 10072 - 10082
Published: Aug. 1, 2024
Recently, a variety of functionalization methods have emerged to enhance the application efficiency covalent organic frameworks (COFs) across diverse fields. Herein, poly(ionic liquid)-functionalized COF-LZU1 was successfully synthesized via mechanochemical reaction followed by surface-initiated ring-opening metathesis polymerization (SI-ROMP). At first, ROMP initiator (5-norbornene-2-methylamine) grafted onto aldehyde-terminated Schiff base induced mechanical force input through ball milling; subsequently, ionic liquid monomer (NM-MIm-PF6) can grow surfaces COFs from active sites SI-ROMP, resulting in formation COF (PNM-MIm-PF6@LZU1). The as-prepared PNM-MIm-PF6@LZU1 exhibited outstanding tribological performance when served as an oil-based lubricant additive. Compared oil 500SN, average friction coefficient with decreased 0.162 0.105, accompanied 74.3% reduction wear volume. excellent lubricating is mainly attributed continuous and tough protective film tribochemical on interface.
Language: Английский
Citations
6
Tribology International, Journal Year: 2024, Volume and Issue: 194, P. 109532 - 109532
Published: March 11, 2024
Language: Английский
Citations
5