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

Functionalized N-doped carbon nanosheets derived from metal−organic framework as oil-based lubricant additives for improved tribological performance DOI
William Yi Wang, Xiaozhi Zhang,

Shenghua Xue

et al.

Tribology International, Journal Year: 2024, Volume and Issue: 197, P. 109795 - 109795

Published: May 19, 2024

Language: Английский

Citations

6
Fabrication of Garlic Oil-Functionalized Onion-Like Carbon Nanoparticles as Effective Nanoadditives for Improved Lubricating Performance DOI

Rui Zhang,

Shenghua Xue,

Yixin Wang

et al.

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

5
Fabrication of Ag Nanoparticle-Embedded Covalent Organic Frameworks for Oil Gel with Long-Term Stability and High Lubrication Performance DOI
Xiaozhi Zhang, William Yi Wang, Tiantian Wang

et al.

Langmuir, Journal Year: 2024, Volume and Issue: 40(42), P. 22159 - 22167

Published: Oct. 8, 2024

In previous reports, covalent organic frameworks (COFs) have demonstrated significant potential as lubricant additives. Herein, we embedded Ag nanoparticles in the DT-COF (polycondensation polymer of 2,5-dihydroxyterephthalaldehyde and 4,4′,4″-(1,3,5-triazine-2,4,6-triyl) trianiline) matrix via ball milling method utilized this composite (Ag@DT-COF) an additive for supermolecule oil gel. The low molecular weight gelator effectively mitigates dispersion challenges COFs oil, while enhance repairing effect antipressure performance lubricant. resulting Ag@DT-COF gel exhibits a reduction average friction coefficient wear volume base by 46.0% 87.5%, respectively, increases load-carrying capacity to 750 N. remarkable tribological properties are attributed easy adsorption DT-COF, antiwear characteristic nanoparticles, that ensures long-term stability

Language: Английский

Citations

4
Preparation of Multi-element Doped Carbon Nanospheres with Core-shell Structure Derived from Polystyrene as Lubricating Additives for Improving Tribological Behavior DOI
Yixin Wang, Sha Liu, Tiantian Wang

et al.

Carbon, Journal Year: 2024, Volume and Issue: unknown, P. 119677 - 119677

Published: Sept. 1, 2024

Language: Английский

Citations

3
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