Grease and its Application on Electrical Equipment: a Review

Japar, N. Suhaila A.; Aziz, Mohd Aizudin Abd; Razali, Mohd Najib; Rahman, Nurul Waheeda Abdu; ., .

doi:10.14419/ijet.v7i3.26.17455

Cited by 4 publications

References 31 publications

(43 reference statements)

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Formulation of Biogreases derived from Mahua and Karanja Oil

Agrawal¹,

Karadbhajne²,

Agrawal³

et al. 2022

Preprint

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The present study reports the parametric investigation conducted on the formulation of biofuels, biolubricant/ biogrease from Mahua (Madhuca Indica) oil and Karanja (Pongamia Pinnata) oil. Biogrease complex has been formulated in 90:10, 80:20 and 70:30 oil/soap ratios for thickness from the oils, their methyl esters and the tri-esters. The experimental results show that the biogrease prepared from Karanja TMP triester showed a drop point of 176 ℃ which was higher as compared to biogrease prepared from Mahua TMP triester which showed a drop point of 172 ℃. The water wash out resistance for both the biogreases was found to be 7%, which is comparable with conventional greases. Based on the cone penetration index, both the biogrease samples were found to fall in NLGI Grade 2 of greases, which is the most common grade of conventionally used greases. Such Biogreases can be effectively used in applications where these greases are directly released into the open atmosphere after their use like agriculture or marine machines and vehicles.

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Formulation of Biogreases derived from Mahua and Karanja Oil

Agrawal¹,

Karadbhajne²,

Agrawal³

et al. 2022

Preprint

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Triboelectric Performance of Ionic Liquid, Synthetic, and Vegetable Oil-Based Polytetrafluoroethylene (PTFE) Greases

Mohamed Ariffin,

Lee,

Thirugnanasambandam

et al. 2024

Lubricants

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Within electrical contacts, poor electrical conductivity of lubricants can lead to triboelectric charging, causing electrostatic currents and thermal effects, which accelerate lubrication failure. This study aimed to address these challenges by producing and testing three greases with different base oils: ionic liquid ([Oley][Oleic]), synthetic oil (PAO4), and vegetable oil-based synthetic ester (trimethylolpropane oleate). Each grease was prepared with polytetrafluoroethylene powder as the thickener. The greases were tested using a custom-made tribometer, integrated with a grounded electrical current system, with friction tests conducted with up to a 2 A electrical current flow at a constant voltage supply of 4.5 V. Under triboelectric friction testing, [Oley][Oleic] grease outperformed a commercial perfluoropolyether grease by 27.7% in friction and 16.3% in wear. This grease also showed better performance than formulated lithium grease with extreme pressure additives. The study demonstrates that greases with low interfacial resistance can retain their lubrication capacity under triboelectric conditions. These results indicate that [Oley][Oleic] grease, with its ionic liquid base oil, offers a promising solution for applications involving electrical contacts. This study highlights the potential of using advanced base oils and thickeners to enhance the performance and sustainability of lubricants in demanding environments.

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Innovative Formulation and Characterisation of Grease Made from Waste Engine Oil

Hairunnaja¹,

Aziz²,

Rahman³

et al. 2023

JST

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Lubricating grease is usually produced from mineral oil, making the relationship between grease and mineral oil unavoidable. Formulation of grease from waste oil can reduce the dependency of the grease industry on mineral oil as well as help to reduce the waste generation of used oil. This study aims to produce fumed silica (FS) grease from waste engine oil (WEO) and analyse the properties of the formulated grease. The method started with treating WEO to remove any contaminants in the used oil. After that, the greases are produced using a weight percentage ratio before being examined for consistency, oil separation, oil bleeding, FTIR (Fourier transform infrared spectroscopy) analysis, and corrosiveness. In terms of uniformity, oil separation, and oil bleeding, WEO percentage content had a substantial impact on the findings. The FTIR demonstrated that synthetic greases had the same spectra when evaluated between 500 cm<sup>-1</sup> and 4000 cm<sup>-1</sup>. The grease's corrosiveness is low, as determined by class 1 corrosiveness toward the copper strip. However, the grease properties differ when consistency, oil bleeding and oil separation test is done. Higher oil content in grease produced high oil bleeding and separation but low consistency. As a conclusion of the results, fumed silica grease with oil percentages of 83 and 82 have the most grease-like features, showing that the grease fits the traits' requirements. Based on the investigation's findings, it was established that WEO may be used as a base oil in grease formulation and that the grease's properties are satisfactory.

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Grease and its Application on Electrical Equipment: a Review

Cited by 4 publications

References 31 publications

Formulation of Biogreases derived from Mahua and Karanja Oil

Formulation of Biogreases derived from Mahua and Karanja Oil

Triboelectric Performance of Ionic Liquid, Synthetic, and Vegetable Oil-Based Polytetrafluoroethylene (PTFE) Greases

Innovative Formulation and Characterisation of Grease Made from Waste Engine Oil

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