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Tribological Properties Of Palm Oil-Based Grease With Nano Particle Additive

The harmful environmental effect of the widespread use of mineral oil and synthetic oil as commercial lubricant greases has been raising concerns in the community. Therefore, the sustainable development of vegetable oil-based bio-lubricants is important to promote the use of biodegradable greases to...

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Main Author: Lee, Ann Yen
Format: Monograph
Language:English
Published: Universiti Sains Malaysia 2021
Subjects:
T Technology
TJ1-1570 Mechanical engineering and machinery
Online Access:http://eprints.usm.my/55802/1/Tribological%20Properties%20Of%20Palm%20Oil-Based%20Grease%20With%20Nano%20Particle%20Additive.pdf
http://eprints.usm.my/55802/
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spelling my.usm.eprints.55802 http://eprints.usm.my/55802/ Tribological Properties Of Palm Oil-Based Grease With Nano Particle Additive Lee, Ann Yen T Technology TJ1-1570 Mechanical engineering and machinery The harmful environmental effect of the widespread use of mineral oil and synthetic oil as commercial lubricant greases has been raising concerns in the community. Therefore, the sustainable development of vegetable oil-based bio-lubricants is important to promote the use of biodegradable greases to replace commercial greases. A proposal was made that thickeners and nanoparticles as additives have the capability to improve the tribological properties of the vegetable oil- based lubricants. In this study, the tribological properties of palm oil-based greases which were formulated with refined palm olein, lithium stearate soap and copper (Cu) nanopowder were evaluated experimentally using a four ball tribotester. Commercially available food grade grease and biodegradable mineral grease were also tested for comparison. The tribological wear tests were conducted at 75℃ temperature and 1200rpm speed under a normal load of 40kg for 1 hour as per ASTM D2266. An additional set of test at 100℃ was carried out to study the effect of temperature on the lubricant properties. The physical properties of the lubricant including viscosity, viscosity index and flash temperature parameter and the tribological properties including frictional torque, friction coefficient, wear scar diameter, surface wear characteristics, and surface roughness were investigated. These findings showed that the formulated palm oil-based grease exhibited finer tribological properties in terms of higher viscosity index and lower frictional torque, friction coefficient, oxidation effect and surface roughness as compared with food grade grease and biodegradable mineral grease. However, the formulated palm oil-grease exhibited less desired properties in terms of wear scar diameter and flash temperature parameter. From the findings, it can be inferred that the tribological characteristics of the palm oil-based bio-lubricants greases are comparable and competitive with the commercial greases. Universiti Sains Malaysia 2021-08-01 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/55802/1/Tribological%20Properties%20Of%20Palm%20Oil-Based%20Grease%20With%20Nano%20Particle%20Additive.pdf Lee, Ann Yen (2021) Tribological Properties Of Palm Oil-Based Grease With Nano Particle Additive. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Mekanik. (Submitted)
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic T Technology
TJ1-1570 Mechanical engineering and machinery
spellingShingle T Technology
TJ1-1570 Mechanical engineering and machinery
Lee, Ann Yen
Tribological Properties Of Palm Oil-Based Grease With Nano Particle Additive
description The harmful environmental effect of the widespread use of mineral oil and synthetic oil as commercial lubricant greases has been raising concerns in the community. Therefore, the sustainable development of vegetable oil-based bio-lubricants is important to promote the use of biodegradable greases to replace commercial greases. A proposal was made that thickeners and nanoparticles as additives have the capability to improve the tribological properties of the vegetable oil- based lubricants. In this study, the tribological properties of palm oil-based greases which were formulated with refined palm olein, lithium stearate soap and copper (Cu) nanopowder were evaluated experimentally using a four ball tribotester. Commercially available food grade grease and biodegradable mineral grease were also tested for comparison. The tribological wear tests were conducted at 75℃ temperature and 1200rpm speed under a normal load of 40kg for 1 hour as per ASTM D2266. An additional set of test at 100℃ was carried out to study the effect of temperature on the lubricant properties. The physical properties of the lubricant including viscosity, viscosity index and flash temperature parameter and the tribological properties including frictional torque, friction coefficient, wear scar diameter, surface wear characteristics, and surface roughness were investigated. These findings showed that the formulated palm oil-based grease exhibited finer tribological properties in terms of higher viscosity index and lower frictional torque, friction coefficient, oxidation effect and surface roughness as compared with food grade grease and biodegradable mineral grease. However, the formulated palm oil-grease exhibited less desired properties in terms of wear scar diameter and flash temperature parameter. From the findings, it can be inferred that the tribological characteristics of the palm oil-based bio-lubricants greases are comparable and competitive with the commercial greases.
format Monograph
author Lee, Ann Yen
author_facet Lee, Ann Yen
author_sort Lee, Ann Yen
title Tribological Properties Of Palm Oil-Based Grease With Nano Particle Additive
title_short Tribological Properties Of Palm Oil-Based Grease With Nano Particle Additive
title_full Tribological Properties Of Palm Oil-Based Grease With Nano Particle Additive
title_fullStr Tribological Properties Of Palm Oil-Based Grease With Nano Particle Additive
title_full_unstemmed Tribological Properties Of Palm Oil-Based Grease With Nano Particle Additive
title_sort tribological properties of palm oil-based grease with nano particle additive
publisher Universiti Sains Malaysia
publishDate 2021
url http://eprints.usm.my/55802/1/Tribological%20Properties%20Of%20Palm%20Oil-Based%20Grease%20With%20Nano%20Particle%20Additive.pdf
http://eprints.usm.my/55802/
_version_ 1751537277647978496
score 13.211869

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