Novel concept of nano-additive design:PTFE@silica Janus nanoparticles for water lubrication
作者机构：School of Mechanical EngineeringBeijing Institute of TechnologyBeijing 100081China Institute of Polymer Science&EngineeringDepartment of Chemical EngineeringTsinghua UniversityBeijing 100084China MOE Key Laboratory of BioinformaticsCenter for Plant BiologySchool of Life SciencesTsinghua UniversityBeijing 100084China Tsinghua-Peking Center for Life SciencesBeijing 100084China College of Biological SciencesChina Agricultural UniversityBeijing 100193China
出 版 物：《Friction》 (摩擦（英文版）)
年 卷 期：2024年第12卷第2期
页 面：258-270页
核心收录：
学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080203[工学-机械设计及理论] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0702[理学-物理学]
基 金：financially supported by the National Natural Science Foundation of China(No.52005287) Beijing Institute of Technology Research Fund Program for Young Scholars,the Tribology Science Fund of State Key Laboratory of Tribology(SKLT)in Advanced Equipment(No.SKLTKF21B14) the Fund of Key Laboratory of Advanced Materials of Ministry of Education(No.ADV21-4)
主 题：Janus nanoparticles(JNs) polytetrafluoroethylene(PTFE) nano-additives friction lubrication
摘 要：Polytetrafluoroethylene(PTFE)has been widely used as a lubrication additive for reducing friction and wear;however,the hydrophobic nature of PTFE restricts its application in eco-friendly water-based lubrication *** this study,for the first time,we designed novel PTFE@silica Janus nanoparticles(JNs)to meet the requirement for additives in water-based lubricants,which have excellent dispersion stability in water attributed to the unique amphiphilic *** introducing the lubrication of the aqueous dispersion of the JNs with a concentration of 0.5 wt%,the coefficient of friction(COF)and wear volume were reduced by 63.8%and 94.2%,respectively,comparing to those with the lubrication of pure ***,the JNs suspension also exhibits better lubrication and wear-resistance performances comparing to commercial silica and PTFE *** excellent tribological behaviors of PTFE@silica JNs as nano-additives could be attributed to the synergetic effect of the two components,where the PTFE provided lubrication through the formed tribofilms on the friction pairs,and the rigid silica further enhanced the wear-resistance *** importantly,the unique structure of JNs makes it possible to use PTFE as an additive in water-lubrication *** study shed light on the design and application of novel JNs nanomaterials as additives to meet the requirements of future industrial applications.
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