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水对自然深层欧性溶剂的tribological属性的特殊影响
Qiulong Gao1,2, Shuwen Liu1,3, Kaiming Hou1,3
1State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
Langmuir : the ACS journal of surfaces and colloids
|December 13, 2024
概括
将水添加到深溶剂 (DES) 中,可以显著提高它们的滑性能. 这些DES-水系统显示了减少摩擦和优异的抗磨损性能,使它们成为理想的绿色滑剂.
科学领域:
- 部落学 (tribology) 是一个学科.
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
背景情况:
- 深度环氧化溶剂 (DES) 被公认为可持续和有效的绿色液体滑剂.
- 水污染对DES属性的影响,特别是 tribological性能,仍然不完全理解.
- 了解水的影响对于优化DES在滑中的应用至关重要.
研究的目的:
- 系统地研究变化的水含量对DES-水 (DES-W) 双星系统的化学结构,风学和三极学行为的影响.
- 阐明在DES-W系统中观察到的 Tribological 增强背后的机制.
主要方法:
- 准备控制水度的DES-W二进制系统.
- 化学结构和风湿学性质的表征 (流动性,粘度).
- 在高负载条件下进行摩擦和磨损测试.
主要成果:
- 低含水量对DES化学结构的影响最小,但改变了流动性和粘度.
- 与纯粹的DES相比,DES-W系统的摩擦系数显著降低 (从0.094到0.025).
- 在高负载条件下观察到出色的抗磨损性能.
结论:
- 增强DES-W系统的滑性归因于在 tribointerface 中形成了水化层,吸附层和 tribochemical 膜.
- 物理化学吸附和 tribochemical 反应是提高性能的关键机制.
- 这些发现支持先进绿色滑剂的设计,并扩大了DESs的潜在工程应用.
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