Tribological performance of trimethylolpropane ester bio-lubricant enhanced by graphene oxide nanoparticles and oleic acid as a surfactant

被引：15

作者：

Zulhanafi, P. ^{[1
]}

Syahrullail, S. ^{[1
]}

Faizin, Z. N. ^{[1
]}

机构：

[1] Univ Teknol Malaysia, UTM Skudai, Fac Mech Engn, Johor Baharu 81310, Malaysia

来源：

TRIBOLOGY INTERNATIONAL | 2023年 / 183卷

关键词：

Trimethylolpropane; Bio-based lubricant; Nanoparticle; Surfactant; Tribology; IONIC LIQUID; CHEMISTRY;

D O I：

10.1016/j.triboint.2023.108398

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

One of the issues of nanoparticle additives is the tendency to agglomerate. The presence of a surfactant may help reduce this issue. In this study, trimethylolpropane (TMP) ester was used as a base lubricant, graphene oxide (GO) as a nanoparticle additive, and oleic acid (OA) as a surfactant. Tribological testing was carried out using a four-ball tribotester at various concentration ratios. The results showed that the TMP + GO + OA demonstrated increased dispersion stability compared to TMP + GO alone. Furthermore, the presence of OA reduced the co-efficient of friction of the samples containing 0.05 wt%, 0.1 wt%, and 0.5 wt% GO by 22.9%, 21.1%, and 23.6%, respectively. Surface roughness and physical wear conditions were also observed and discussed.

引用

页数：12

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