Influence of medical-grade montmorillonite on the tribological and safety performance of composite aluminum-based grease

Abstract

Purpose This study aims to reduce the harm of industrial lubricants to consumers. Composite aluminum-based grease (CAG) was prepared, and medical-grade montmorillonite (M-MMT) was used to improve the antiwear performance of the prepared grease. Design/methodology/approach The influence of the additive (M-MMT) on the tribological performance is mainly investigated using a ball-disc wear tester, and the wear scar surface about the disc was characterized by white light interferometer and electrochemical workstation. Moreover, the cell viability test was used to evaluate the safety of the grease. Findings The results indicated that for the grease containing 1.5% M-MMT, the average coefficient of friction was reduced by about 46% compared with the CAG, the wear volume of the disc reduced by about 74%. Moreover, CAG and 1.5% M-MMT-containing CAG were proved safety by means of the cell viability test. Originality/value The integral properties of CAG can be improved with the medical-grade materials as the additives, while ensuring the safety.

Revealing the tribological mechanism of synergistic effect between MoDTC and P-containing additives in aluminum-based grease

“…Dibutylamine, carbon disul de, Molybdenum acetylacetonate (MoO 2 (acac) 2 ), Tributyl phosphate (TBP), Tricresyl phosphate (TCP) and ethanol (EtOH) were supplied by Aladdin Chemical Reagent Co., Ltd. All solvents and chemicals were used without further puri cation. Aluminum-based grease prepared in the laboratory was used as the base grease [22]. Zinc dialkyl dithiophosphate (ZDDP, T202, Zinc Butyl Octyl Primary Alkyl) was provided by Suzhou Xingchangrun Chemical Co., Ltd.…”

Tribological Performance Evaluation of Greases on a Four-Ball Tester with Graphene Oxide Nanoparticles

“…Jiusheng et al prepared novel nanomagnetic grease that exhibited favorable lubricating properties; they also analyzed the interaction between the magnetic grease and the original grease to determine the mechanism by which the magnetic grease provided lubrication. The antiwear and EP properties of the greases were improved massively in some cases. ,,− …”