Study of graphene nanolubricant using thermogravimetric analysis

被引：16

作者：

Rasheed, Abdul Khaliq ^{[1
]}

Khalid, Mohammad ^{[1
]}

Walvekar, Rashmi ^{[2
]}

Gupta, Thummalapalli Chandra Sekhara Manikyam ^{[3
]}

Chan, Andrew ^{[4
]}

机构：

[1] Univ Nottingham, Mfg & Ind Proc Div, Fac Engn, Malaysia Campus, Semenyih 43500, Selangor, Malaysia

[2] Taylors Univ, Energy Res Div, Subang Jaya 47500, Selangor, Malaysia

[3] Apar Ind Ltd, Bombay 400071, Maharashtra, India

[4] Univ Nottingham, Div Environm Res, Fac Engn, Malaysia Campus, Semenyih 43500, Selangor, Malaysia

来源：

JOURNAL OF MATERIALS RESEARCH | 2016年 / 31卷 / 13期

关键词：

DEPENDENT THERMAL-CONDUCTIVITY; RHEOLOGICAL PROPERTIES; NANOFLUIDS; OXIDE;

D O I：

10.1557/jmr.2015.359

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermal degradation of graphene based mineral oil lubricants was studied using thermogravimetric analysis (TGA). As-synthesized graphene sheets of 8, 12, and 60 nm thick and engine oil formulations 20W50 SN/CF and 20W50 SJ/CF were used for synthesizing various test samples. UV-Vis spectrophotometry, zeta potential, field emission scanning electron microscopy, and energy-dispersive x-ray spectroscopy were used to characterize the graphene sheets and the nanolubricants. TGA revealed that the onset temperature of oxidation for the SN/CF oil could be delayed by 13-17 degrees C in the presence of graphene. Moreover the rate of oxidation when the weight loss of oil in the presence of graphene reaches 40-20% could be delayed by more than 30 degrees C. Resistance to oil degradation depends strongly on the graphene nanoparticle size and concentration. TGA kinetics studies show that the base oils have higher activation energy (E-a) and the addition of graphene significantly reduces E-a.

引用

页码：1939 / 1946

页数：8

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