The Effects of Palm Oil with Nanoclay Additive in Hydrodynamic Journal Bearing Lubrication
Izatul Hamimi Abdul Razak1, Mohamad Ali Ahmad2, Nadia Nurul Nabihah Ahmad Fuad3

1Izatul Hamimi Abdul Razak, Mechanical & Manufacturing Section, University Kuala Lumpur Malaysia France Institute, Bangi, Selangor, Malaysia.
2Mohamad Ali Ahmad*, Faculty of Mechanical Engineering, University Teknologi MARA, Shah Alam, Selangor, Malaysia.
3Nadia Nurul Nabihah Ahmad Fuad, Faculty of Mechanical Engineering, University Teknologi MARA, Shah Alam, Selangor, Malaysia.
Manuscript received on September 21, 2019. | Revised Manuscript received on October 20, 2019. | Manuscript published on October 30, 2019. | PP: 5936-5942 | Volume-9 Issue-1, October 2019 | Retrieval Number: A3031109119/2019©BEIESP | DOI: 10.35940/ijeat.A3031.109119
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Abstract: In the present study, palm oil has been tested to study its capability as a lubricant to replace commercial mineral oil. To enrich the performance, nanoparticles additives were added. Previous studies proved that by adding the small size of additives into lubricating oil can lessen the friction and improve anti-wear properties. In this research, the size of the nanoparticle used was below 20nm. Four ball tester following ASTM D4072-94 was conducted to determine the optimum concentration of palm oil bio-lubricant with Nano-clay additive ranged from 0.02% to 0.08%wt. The results discovered that 0.04wt% of Nano-clay additive added into palm oil was the optimum concentration of the lubricant with the coefficient of friction 0.081, which recorded 16% reduction as compared to mineral oil (20W-40) – the reference lubricant. It also shows good anti-wear ability which the wear scar diameter was improved by 32%. The oil was then tested in journal bearing to characterize the hydrodynamic lubrication properties. The properties that have been observed were the coefficient of friction, pressure profile and temperature profile. The results showed that modified palm oil with Nano-clay provided better performance with low coefficient of friction (reduced more than 50% as compared to mineral oil) and also temperature profile (reduced up to 20% compared to mineral oil). As for the pressure profile, even slightly higher pressure recorded for palm oil due to lower viscosity, yet the pressure was improved with the presence of Nano-clay additive. In overall, it had been proven that palm oil with Nano-clay additive shows massive potential as an alternative lubricant to the same range with the current industrial mineral oil.
Keywords: Coefficient of friction, Journal bearing test rig oil, Pressure profile, Temperature profile.