Rheological and tribological approaches as a tool for the development of sustainable lubricating greases based on nano-montmorillonite and castor oil  

作　　者：Jose Enrique MARTÍN-ALFONSO María Jose MARTÍN-ALFONSO Concepción VALENCIA María Teresa CUBERES 

机构地区：[1]Department of Chemical Engineering and Materials Science,Campus de“El Carmen”,University of Huelva,Chemical Product and Process Technology Research Center(Pro2TecS),Huelva 21071,Spain [2]Department of Applied Mechanics and Project Engineering,University of Castilla-La Mancha,Almadén 13400,Spain

出　　处：《Friction》2021年第2期415-428,共14页摩擦（英文版）

摘　　要：This study investigates the development of novel montmorillonite/castor oil blends to formulate sustainable lubricating greases to promote the replacement of petrochemicals industry-derived materials by substances obtained from renewable sources.Specifically,the effect of the thickener concentration on the rheological,chemical,thermal,tribological properties,and atomic force microscopy(AFM)microstructure of these systems were studied.The results showed that the C20A nanoclay content could be used to modulate the viscosity values,the linear viscoelastic functions,and tribological properties of these montmorillonite dispersions.In general,these gel-like dispersions exhibited remarkable lubricant properties;the samples showed values of the friction coefficient and wear scars similar or lower than those obtained with model bentonite grease.

关 键 词：lubricating greases NANOCLAY vegetable oil RHEOLOGY TRIBOLOGY 

分 类 号：TH117.2[机械工程—机械设计及理论]