Results 41 to 50 of about 581 (170)

Load and velocity boundaries of oil-based superlubricity using 1,3-diketone

Friction, 2023
The clarification of the critical operating conditions and the failure mechanism of superlubricity systems is of great significance for seeking appropriate applications in industry.
Yuyang Yuan, Tobias Amann, Yuwen Xu, Yan Zhang, Jingfu Chen, Chenqing Yuan, Ke Li   +6 more
doaj   +1 more source

Ultralow friction of PEEK composites under seawater lubrication

Journal of Materials Research and Technology
Water-lubricating bearings made of polymer-matrix composites have provided a new approach to prolong the service lifetime of key component in marine propulsion system.
Tao Hu, Wenli Zhang, Minsong Wu, Weizhong Tang, Xiaozhi Chen, Xiaolei Li, Chenhui Zhang   +6 more
doaj   +1 more source

Micro/atomic-scale vibration induced superlubricity

Friction, 2020
With the rapid development of industry, the inconsistency between the rapid increase in energy consumption and the shortage of resources is becoming significant.
Shuai Shi, Dan Guo, Jianbin Luo
doaj   +1 more source

Geometry effect of different PTFE fillers on self-lubricating PF composites: Mechanical and tribological properties

Journal of Materials Research and Technology
In order to further improve the performance of polytetrafluoroethylene (PTFE) as lubricant additives, PTFE fiber bundles (PTFE-F) were prepared by wet spinning to enhance phenolic resin (PF), and PTFE powders (PTFE-P) were used as a contrast phase.
Wenli Zhang, Xi Shu, Shiyun Cheng, Xiaolei Li, Tao Hu, Chenhui Zhang   +5 more
doaj   +1 more source

Macroscale superlubricity achieved between zwitterionic copolymer hydrogel and sapphire in water

Materials & Design, 2020
Achievement of macroscale superlubricity from the hydration effect could provide a potential application for artificial articular cartilage. In this work, two zwitterionic polymers, 2-methacryloyloxyethyl phosphorylcholine (MPC) and sulfobetaine ...
Zhongnan Wang, Jinjin Li, Yuhong Liu, Jianbin Luo   +3 more
doaj   +1 more source

Polarization Dynamics in Ferroelectrics: Insights Enabled by Machine Learning Molecular Dynamics

Advanced Science, EarlyView.
Machine learning molecular dynamics is presented as a route to capture polarization switching, domain wall kinetics, topological polar textures, and polar mechanical coupling beyond the limits of conventional atomistic methods. This Perspective surveys recent progress and identifies key methodological directions, including long‐range electrostatics ...
Dongyu Bai, Ri He, Junxian Liu, Liangzhi Kou   +3 more
wiley   +1 more source

Synthetic of phenolic resin@SiO2 containing PAO6 to reinforce the tribological properties of PTFE/aramid fabric liner composites

Journal of Materials Research and Technology
In this study, SiO2 containing PAO6 microcapsules were endowed with surface active groups by polydopamine (PSPMS). Then the modified microcapsules were in situ grafted into phenolic resin (PF@PSPMS) to control the dispersion and bonding in high viscosity
Wenli Zhang, Jiangbo Li, Shiyun Cheng, Tao Hu, Fei Lu, Xiaolei Li, Chenhui Zhang   +6 more
doaj   +1 more source

Hamaker Constants of van der Waals Materials under Clean‐Interface Conditions

Advanced Science, EarlyView.
Clean‐interface adhesion in representative van der Waals materials is quantified by Ultra High Vacuum (UHV) Atomic Force Microscopy (AFM) with in situ cleaning and calibrated probes. Benchmark Hamaker constants for graphene, MoS2, and SiO2 are established, while humidity is shown to reversibly amplify adhesion, explaining much of the scatter in ...
Daniel Gallego‐Fuente, Jaime Colchero, Julio Gomez‐Herrero, Pablo Ares   +3 more
wiley   +1 more source

Mixing and Compounding of Graphene/High Density Polyethylene Nanocomposites Using Twin‐Screw and Octa‐Screw Extrusions: A Comparative Study

Journal of Applied Polymer Science, EarlyView.
Advanced octa‐screw extrusion offers a breakthrough in compounding high‐viscosity polymer nanocomposites. By comparing twin‐ and octa‐screw extruders, this study reveals that the octa‐screw's unique intermeshing geometry achieves superior graphene exfoliation while preventing thermal degradation.
Cheng‐Ying Liu, Akira Ishigami, Hiroshi Ito   +2 more
wiley   +1 more source

Strain‐Driven Superlubricity of Graphene/Graphene in Commensurate Contact

Advanced Materials Interfaces, 2023
The occurrence of structural superlubricity (SSL) requires that two sliding surfaces be in incommensurate contact. However, the incommensurate contact between two sliding surfaces is fundamentally an instable state whose maintenance over time is ...
Ziwen Cheng, Haochen Feng, Junhui Sun, Zhibin Lu, Q.‐C. He   +4 more
doaj   +1 more source