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Vasishth, Ajay
- Recent Advances in Science and Technology of Single and Multi Wall Carbon Nanotubes and their Composites
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Affiliations
1 Department of Mechanical Engineering Chandigarh University, Gharuan -140413, District Mohali, Punjab, IN
2 Department of Applied Sciences Chandigarh University, Gharuan - 140413, District Mohali, Punjab, IN
1 Department of Mechanical Engineering Chandigarh University, Gharuan -140413, District Mohali, Punjab, IN
2 Department of Applied Sciences Chandigarh University, Gharuan - 140413, District Mohali, Punjab, IN
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Indian Journal of Science and Technology, Vol 9, No 41 (2016), Pagination:Abstract
Subsequent to their first perception more than two decades ago, Carbon Nanotubes (CNTs) have formed the epicenter for numerous important studies. Various researchers and scientists have stated striking bodily and perfunctory features for this unique form of carbon. These exhibit one of a kind microelectronic features and thermal conductivity greater than diamond and also mechanical features where the mechanical and electrical features, quality and flexibility surpasses any present material, study of CNTs offers many options for the improvement on a very basic level of new material frameworks. Specifically, the excellent mechanical features of CNTs, consolidated with their small width, propose degree aimed at advancement of Nanotube strengthened compound resources. The scope for nanocomposites strengthened with carbon tubes having remarkable improved mechanical features offer a lot of scope of rapid development in the field of science. This research study gives compact assessment of late developments in CNTs and related compounds. Also presented in this paper are details regarding configuration and handling of CNTs.Keywords
CNTs, Characterization of Nanotubes, Single and Multi Wall CNTs.Full Text
- 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
- Fujitsu T, Griffiths J. Lubricating oil composition. US 2006/0189489 A1. 2006.
- Feng X, Jianqiang H, Fazheng Z, Feng J, Junbing Y. Antiwear performance of organomolybdenum compounds as lubricant additives. Lubrication Science. 2007; 19(2):81. https://doi.org/10.1002/ls.31.
- Bakunin VN, Suslov AY, Kuzmina GN, Parenago OP, Topchiev AV. Synthesis and application of inorganic nanoparticles as lubricant components – A review. Journal of Nanoparticle Research. 2004; 6(2):273284. https://doi.org/10.1023/B:NANO.0000034720.79452.e3.
- Vasishth A, Kuchhal P, Anand G. Study of rheological properties of industrial lubricants. Conference Papers in Science; 2014. p. 1–5.
- Yu B, Liu Z, Zhou F, Liu W, Liang Y. A novel lubricant additive based on carbon nanotubes for ionic liquids. Material Letters. 2008; 62(17-18):2967–9. https://doi.org/10.1016/j.matlet.2008.01.128.
- Kim HB, Choi JS, Lim ST, Choi HJ, Kim HS. Preparation and nanoscopic internal structure of single-walled carbon nanotube-ionic liquid gel. Synthetic Metals. 2005; 154(13):189–92. https://doi.org/10.1016/j.synthmet.2005.07.048.
- Chen CY, Fu MJ, Tsai CY, Lin FH, Chen KY. Functionalization and magnetization of carbon nanotubes using Co-60 gamma-ray irradiation. Journal of Magnetism and Magnetic Materials. 2014; 367:47–52. https://doi.org/10.1016/j.jmmm.2014.04.066.
- Tonk R, Vasishth DA, Aggarwal K. Recent advances in science and technology of single and multi wall carbon nanotubes and their composites. Indian Journal of Science and Technology. 2016; 9(41):1–5.
- Beca S, Toncka A, Georgesa JM, Roper GW. Synergistic effects of MoDTC and ZDTP on frictional behaviour of tribofilms at the nanometer scale. Tribology Letters. 2004; 17(4):797–809. https://doi.org/10.1007/s11249-004-8088-7.
- Maga SEB. Heat transfer behaviors of nanofluids in uniformly heated tube. Superlattices and Microstructures. 2004; 35(36):543–57. https://doi.org/10.1016/j.spmi.2003.09.012.
- Chang L, Friedrich K. Enhancement effect of nanoparticles on the sliding wear of short fiber-reinforced polymer composites: A critical discussion of wear mechanisms. Tribology International. 2010; 43:2355–64. https://doi.org/10.1016/j.triboint.2010.08.011.
- Thostenson ET, Ren Z, Chou TW. Advances in the science and technology of carbon nanotubes and their composites: a review. Composites Science Technology. 2001; 61(13):18991921. https://doi.org/10.1016/S02663538(01)00094-X.
- Cursaru DL, Andronescu C, Pirvu C, Ripeanu R. The efficiency of Co-based Single Wall Carbon Nanotubes (SWNTs) as an AW/EP additive for mineral base oils. Wear. 2012; 290-291:133–9. https://doi.org/10.1016/j. wear.2012.04.019.
- Investigation of the Viscoelastic and Thermo-Physical Properties of Mineral Base Engine Oils Containing Multi Walled Carbon Nanotubes
Abstract Views :215 |
PDF Views:0
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
- Choi S. Enhancing thermal conductivity of fluids with nanoparticles. D.A. Siginer. 1995.
- Tonk R, Ajay Vasishth, Aggarwal DK. Recent advances in science and technology of single and multi wall carbon nanotubes and their composites. Indian Journal of Science and Technology. 2016; 9(41):1–5. https://doi.org/10.17485/ ijst/2016/v9i41/101469.
- Thostenson ET, Ren Z, Chou TW. Advances in the science and technology of carbon nanotubes and their composites: A review. Composites Science Technology. 2001; 61(13):1899–912. https://doi.org/10.1016/S0266-3538(01)00094-X.
- Hwang Y, Lee JK, Jung WH. Thermal conductivity and lubrication characteristics of nanofluids. Current Applied Physics. 2006; 6(1):67–71. https://doi.org/10.1016/j.cap.2006.01.014.
- Xie H. Thermal conductivity enhancement of suspensions containing nanosized alumina particles, Journal of Applied Physics. 2002; 91(7):4568–72. https://doi.org/10.1063/1.1454184.
- Maga SEB. Heat transfer behaviors of nanofluids in uniformly heated tube. Super lattices and Microstructures. 2004; 35(3–6):543–57. https://doi.org/10.1016/j.spmi.2003.09.012.
- Xuan Y, Roetzel W. Conception for heat transfer correlation of nanofluids. International Journal of Heat Mass Transfer. 2000; 43(19):3701–7. https://doi.org/10.1016/S00179310(99)00369-5.
- Hong KS, Hong Tae-Keun, Yang Ho-Soon. Thermal conductivities of Fe nanofluids depending on the cluster size of the nanoparticles. Applied Physics Letters. 2006; 242:1–388. https://doi.org/10.1016/j.physleta.2006.07.057.
- Wang X. Thermal conductivity of nanoparticles-fluid mixture. Journal of Thermo Physics and Heat Transfer. 1999; 13(4):474–80. https://doi.org/10.2514/2.6486.
- Pak BC, Cho YI. Hydrodynamic and heat transfer study of dispersed fluids with submicron metallic oxide particles. Experimental Heat Transfer. 1998; 11:151–70.https://doi.org/10.1080/08916159808946559.
- Patel HE. An experimental investigation into the thermal conductivity enhancement in oxide and metallic nanofluids. Journal of Nano particle Research. 2010; 12(3):1015–31. https://doi.org/10.1007/s11051-009-9658-2.