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Study of graphene nanolubricant using thermogravimetric analysis

机译：热重分析法研究石墨烯纳米润滑剂

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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 ℃ 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 ℃. 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.
机译：使用热重分析（TGA）研究了石墨烯基矿物油润滑剂的热降解。合成后的8、12和60 nm厚的石墨烯片以及20W50 SN / CF和20W50 SJ / CF机油配方用于合成各种测试样品。紫外可见分光光度法，ζ电位，场发射扫描电子显微镜和能量色散X射线光谱法用于表征石墨烯片和纳米润滑剂。 TGA显示，在石墨烯存在下，SN / CF油的氧化起始温度可以延迟13-17℃。此外，在石墨烯存在下油的重量损失达到40-20％时，氧化速率可以延迟30℃以上。耐油降解性在很大程度上取决于石墨烯纳米颗粒的大小和浓度。 TGA动力学研究表明，基础油具有较高的活化能（E_a），而石墨烯的添加会显着降低E_a。

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  • 来源
    《Journal of Materials Research》 |2016年第13期|1939-1946|共8页
  • 作者

    Abdul Khaliq Rasheed; Mohammad Khalid; Rashmi Walvekar; Thummalapalli Chandra Sekhara Manikyam Gupta; Andrew Chan;

  • 作者单位

    Manufacturing & Industrial Processes Division, Faculty of Engineering, University of Nottingham Malaysia Campus, Semenyih, Selangor 43500, Malaysia;

    Manufacturing & Industrial Processes Division, Faculty of Engineering, University of Nottingham Malaysia Campus, Semenyih, Selangor 43500, Malaysia;

    Energy Research Division, Taylor's University, Subang Jaya, Selangor 47500, Malaysia;

    Apar Industries Limited, Chembur, Mumbai 400071, India;

    Environmental Research Division, Faculty of Engineering, University of Nottingham Malaysia Campus, Semenyih, Selangor 43500, Malaysia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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