表面修饰的LDH纳米薄膜在油中具有高分散性,可减少摩擦和磨损
Qiang Zhang1,2, Guiju Zhang3, Yongwang Huang4
1State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
ACS applied materials & interfaces
|January 16, 2024
概括
用油酸 (OA) 和酸 (SA) 功能化层叠双氧化物 (LDH) 纳米片显著改善它们在滑剂中的分散. 这些改造的LDH纳米板有效地减少摩擦和磨损,提供有前途的工业应用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 部落学 (tribology) 是一个学科.
背景情况:
- 纳米材料的表面和界面工程对于提高液体介质中的分散稳定性至关重要.
- 分层双氧化物 (LDH) 纳米片被探索为滑剂添加剂.
- 油酸 (OA) 和酸 (SA) 等长链有机分子与基油相容,并具有减少摩擦的特性.
研究的目的:
- 用OA和SA对ZnMgAl LDH纳米板进行功能化,以改善其分散性和三元学性质.
- 研究基油中改性LDH纳米片的协同滑效应.
- 评估表面功能化的LDH作为高性能滑剂添加剂的潜力.
主要方法:
- 通过通过脱水凝结接种OA和SA来修改ZnMgAl LDH纳米片的表面.
- 在基油中原始和功能化的LDH纳米片的分散稳定性的表征.
- 调试试验测试,以评估修改后的添加剂的摩擦和减少磨损的能力.
主要成果:
- 用OA和SA进行表面功能化显著改善了LDH纳米板的分散稳定性.
- 经过修改的LDH纳米板表现出优异的 Tribological 性能,降低了 ~ 65% 的摩擦系数和 ~ 99% 的磨损体积在 0.15 wt % 的度下.
- 在有机酸和LDH纳米片之间观察到协同滑效应.
结论:
- 表面功能化的LDH纳米板表现出优异的分散稳定性和滑剂显著的摩擦和磨损降低.
- 绿色和简单的合成方法,再加上卓越的性能,突出了这些修改后的LDH材料的工业潜力.
- 这项研究提出了通过纳米材料表面工程开发先进滑剂添加剂的可行策略.
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