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Sehgal, Satbir Singh
- To Study the Effect on the Viscoelastic Properties of a Mineral Base Engine Oil Additivated by Functionalized Multi Walled Carbon Nanotubes
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Authors
Affiliations
1 Department of Mechanical Engineering, Chandigarh University, Gharuan Mohali, Punjab -140413, IN
2 Department of Applied Sciences, Chandigarh Engineering College, Landran Mohali, Punjab - 140307, IN
1 Department of Mechanical Engineering, Chandigarh University, Gharuan Mohali, Punjab -140413, IN
2 Department of Applied Sciences, Chandigarh Engineering College, Landran Mohali, Punjab - 140307, IN
Source
Indian Journal of Science and Technology, Vol 11, No 28 (2018), Pagination: 1-7Abstract
The lubricants are most important component of any moving machinery system which helps to reduce the friction and thus overall wear and tear. Objectives: The important viscoelastic properties such as shear rate, shear stress, viscosity, Torque etc. of additivated mineral oil was investigated using a Rheometer and ultrasonic velocity measurements were conducted using nano fluid interferometer. Method: In the current experimental work, Multi Walled Carbon Nanotubes (MWCNT) were coated with stearic acid (carboxylic group) in order to investigate their viscoelastic properties as wear reduction additive for a mineral base engine oil (SAE 20W50). The functional MWCNTs were examined by FTIR technique, Scanning Electron Microscopy (SEM) and Field Emission Scanning Electron Microscopy (FESEM). The MWCNTs were then dispersed in a mineral oil by ultrasonication. Findings: The results show that by functionalization of MWCNTs, the viscoelastic properties of the base mineral oil improved as more stable bonds were created on metallic surface due to improved absorption qualities. It was also deduced that due to coating of MWCNTs with carboxylic group stearic acid, the stability of suspension is high and it does not coagulate even after few months. Applications: The improved additivated engine oil finds applications in almost all major automobile uses and to reduce the harmful effect on the environment.Full Text
References
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- Investigation of the Viscoelastic and Thermo-Physical Properties of Mineral Base Engine Oils Containing Multi Walled Carbon Nanotubes
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Authors
Affiliations
1 Department of Mechanical Engineering, Chandigarh University, Gharuan, Mohali – 140413, Punjab, IN
2 Department of Applied Sciences, Chandigarh Engineering College, Landran, Mohali – 140413, Punjab, IN
3 Department of Electronics, CSIO-AcSIR, Chandigarh – 160017, Punjab, IN
1 Department of Mechanical Engineering, Chandigarh University, Gharuan, Mohali – 140413, Punjab, IN
2 Department of Applied Sciences, Chandigarh Engineering College, Landran, Mohali – 140413, Punjab, IN
3 Department of Electronics, CSIO-AcSIR, Chandigarh – 160017, Punjab, IN
Source
Indian Journal of Science and Technology, Vol 11, No 28 (2018), Pagination: 1-4Abstract
It is a known fact now that the commercially available lubricating oils depict lower thermo-physical features when compared with lube oils with antiwar additives. Objective: The thermo-physical and viscoelastic properties such as shear rate, shear stress, viscosity, Torque and ultrasonic velocity of additivated mineral base engine oils were calculated and studied for improvement markers. Method: In the current experimental work, samples were prepared for two different mineral base engine oils of 20W50 grade with one sample each of base fluid and three each with multi walled carbon nanotubes coated with stearic acid (carboxylic acid) added in 0.1 %, 0.3% and 0.5% wt concentration to base sample respectively. The Multi walled carbon nano tubes (MWCNTs) were then dispersed in a mineral oil by ultrasonication. The properties were investigated using a Rheometer (viscoelastic properties), ultrasonic velocity measurements were conducted using nano fluid interferometer and thermal conductivity was recorded using KD2 pro thermal property analyser apparatus. A comparative analysis is given in this paper. Findings: The results show that by functionalization of MWCNTs, the viscoelastic properties of the base mineral oil improved as more stable bonds were created on metallic surface due to improved absorption qualities. It was also deduced that due to coating of MWCNTs with carboxylic group stearic acid, the stability of suspension is high and it does not coagulate. Applications: The applications and benefits are numerous including automobile sector, heavy machinery sector etc.Full Text
References
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