Fabrication of Dialkyl Dithiophosphate-Functionalized Carbon Aerogel Microspheres for Enhanced Lubrication Performance

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: March 14, 2025

Herein, functionalized carbon aerogel microspheres (CAMs) were successfully prepared by the pyrolysis of resorcinol-formaldehyde (RF) followed surface modification. First, RF carbonized to obtain CAMs. Afterward, polyphenolic compound epigallocatechin gallate (EGCG) was reacted with melamine form a poly(EGCG) layer onto CAM surface, bonding antiwear molecule dialkyl dithiophosphate (DDP) Michael addition, resulting in DDP-functionalized CAMs (DDP-CAMs). The grafting DDP improved lipophilicity CAMs, enabling stable dispersion base oil 500SN for over 10 days while also enhancing their antifriction and properties. addition 1.0 wt % DDP-CAMs resulted 34.7% reduction coefficient friction 47.5% decrease wear volume. enhanced lubrication performance can be attributed synergistic effect. On one hand, protective film generated through tribo-chemical reactions. At same time, present at contact interface exhibited nanoscale rolling self-repairing

Language: Английский

Fabrication of functional N, S co-doped MXene for enhance tribological performance

Tribology International, Journal Year: 2024, Volume and Issue: unknown, P. 110454 - 110454

Published: Dec. 1, 2024

Language: Английский