设计耐冲击性和坚固性进入滑动滑剂注入的多孔表面
Vikramjeet Singh1, Jianhui Zhang1,2, Priya Mandal1,2
1Nanoengineered Systems Laboratory, UCL Mechanical Engineering, University College London, London, WC1E 7JE, UK.
这项研究引入了一种新的策略,用于使用金属有机框架 (MOF) 的滑滑滑剂注入多孔表面 (SLIPS). 这种方法提高了滑剂的保留力,显著提高了对水的耐用性,并防止了更广泛的应用中的生物污染.
科学领域:
- 材料科学 材料科学 材料科学
- 表面化学 表面化学
- 纳米技术纳米技术
背景情况:
- 滑动滑剂注入多孔表面 (SLIPS) 为表面污染和冰层提供解决方案,但遭受滑剂耗尽.
- 开发具有长期稳定的强大的SLIPS对于实际应用至关重要.
研究的目的:
- 开发一种协同策略,以利用金属有机框架 (MOFs) 在SLIPS中增强滑剂保留.
- 为了证明MOF孔隙结构的有效性,几何兼容性和锁定滑剂的定制化学成分.
- 在各种具有挑战性的条件下评估增强型SLIPS的性能.
主要方法:
- 利用来自具有亚纳米孔的MOF的超高毛细血管压力.
- 确保滑剂链直径和MOF孔径之间的几何兼容性.
- 量身定制的MOF孔腔化学,用于与滑剂的强烈分子间相互作用.
- 通过实验和量子/分子模拟来研究.
主要成果:
- 在MOF毛孔内实现滑剂链的有效锁定,形成非传统的超分子结构.
- 开发了SLIPS (包括无选项),具有较低的湿湿歇斯底里,摩擦和冰粘合力.
- 对连续滴水 (50小时),高速喷水冲击 (韦伯数>4 × 104) 和在动态流动中形成细菌生物膜的异常耐药性.
结论:
- 拟议的策略显著提高了SLIPS中的滑油保留率,克服了滑油耗尽的限制.
- 由此产生的以MOF为基础的SLIPS在苛刻的条件下表现出优越的耐用性和防腐性能.
- 这一进步有可能扩大SLIPS在各种领域的实际应用.
更多相关视频
08:02Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
Published on: February 11, 2020
13:57Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes
Published on: December 24, 2014
相关概念视频
Design Example: Deciding Thickness of Lubricating Fluid in a Shaft
To calculate the required thickness of the lubricant layer, the tangential velocity at the shaft's surface must first be determined. This velocity is calculated by converting the rotational speed to angular...
Dry Friction
To illustrate this concept, imagine a wooden crate resting on a rough, non-uniform horizontal surface. When an external force is applied to...
Characteristics of Dry Friction
Before the wheelbarrow starts moving, the static frictional force acts tangentially to the contact surface, opposing the force that is about to induce the motion. This frictional force prevents the...
Rolling Resistance
For instance, imagine a hard cylinder rolling on a comparatively soft surface. The cylinder's weight compresses the surface beneath it. As the cylinder moves, the material in front of it slows down...
Abrasion Resistance of Concrete
One such test is the revolving disc test, where three plates...
Frictional Force
