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

Jingwen Hou,

Guangkai Jin,

Zhichao Wang

et al.

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

Thioether bond bridged covalent organic framework/ZDDP synergistic interface improvement of tribochemical film for promoting tribological performance DOI

Fengfei Chen,

Wei Wang, Mingan Zhou

et al.

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2025, Volume and Issue: unknown, P. 136351 - 136351

Published: Feb. 1, 2025

Language: Английский

Citations

0
Manipulating the structure of Covalent Organic Frameworks through p-π resonance toward excellent tribological properties DOI
Yue Liu,

Zhongpan Zhang,

Xiaoqiang Fan

et al.

Carbon, Journal Year: 2025, Volume and Issue: unknown, P. 120307 - 120307

Published: April 1, 2025

Language: Английский

Citations

0
The Study of the Inhibitive Behavior of COF-5 Lubricant Additives on Wear and Corrosion of the Tin Bronze Friction Pair during the Current-Carrying Process DOI

J.L. Dong,

Guoliang Zhang,

Fucong Liu

et al.

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

Published: April 28, 2025

COF-5 is an excellent choice as a lubricant additive due to its high specific surface area and regular layer stacking structure. In this paper, the porous covalent organic frameworks of nanomaterial were successfully synthesized via method sonochemical synthesis. Pure [BMIM][SCN] (BS) was used base oil, tribological properties COF-5-BS composite evaluated by using ball-on-disk wear tester. The results demonstrated that volume BS with addition 0.1 wt % reduced 46.64% compared pure BS, corrosion on friction interface effectively inhibited nanomaterial. This phenomenon ascribed large area, being adsorbed onto interface, which could repair wear-induced pits prevent direct contact between metal substrate corrosive medium. be efficiently regulated under applied electric current. intelligent current-controlled indicated average coefficients (COF) current stimulation 30 mA on/off cycling 12.05% continuous operated for 1 h. Moreover, depth 11.69% 8.75%, respectively. That because short duration regulation enhance rapid formation film composed liquid nanosheets interface. Meanwhile, temperature would not produce failure lubricating film, resulting in low coefficient antifriction property.

Language: Английский

Citations

0
Fabrication of Dialkyl Dithiophosphate-Functionalized Carbon Aerogel Microspheres for Enhanced Lubrication Performance DOI

Jingwen Hou,

Guangkai Jin,

Zhichao Wang

et al.

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

Citations

0