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Article

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Title

Oxidation Stability of Natural Ester Modified by Means of Fullerene Nanoparticles

Authors

[ 1 ] Instytut Elektroenergetyki, Wydział Inżynierii Środowiska i Energetyki, Politechnika Poznańska | [ SzD ] doctoral school student | [ P ] employee

Scientific discipline (Law 2.0)

[2.10] Environmental engineering, mining and energy

Year of publication

2021

Published in

Energies

Journal year: 2021 | Journal volume: vol. 14 | Journal number: no. 2

Article type

scientific article

Publication language

english

Keywords
EN
  • natural ester
  • oxidation stability
  • fullerene
  • antioxidants
  • aging process
  • acid number
Abstract

EN Increasing environmental demands influence the requirements for devices and materials used in the power industry. One example is a power transformer and an electro-insulating liquid used in it. In order to meet these requirements, electro-insulating liquids should be characterized by, inter alia, high biodegradability and good fire properties. One of such liquids is natural ester. However, its oxidation stability is low in comparison to mineral oil and demands improvement, which can be achieved by the addition of an antioxidant. The authors of this work used fullerene nanoparticles for that purpose. Pure natural ester samples were prepared, and samples with two concentrations of fullerene, 250 mg/L and 500 mg/L in natural ester. All these samples were aged in a thermal oxidation process. Thereafter, the aging properties of all the samples were compared to assess the oxidation stability of modified liquids. Moreover, the electrical properties of prepared insulating liquids were investigated to assess if fullerene deteriorates these properties after aging process. Based on the obtained results, it was proved that the aging process slowed down in the case of both fullerene concentrations in ester. The acid number of natural ester modified using fullerene was lower than in the case of pure liquid.

Pages (from - to)

490-1 - 490-13

DOI

10.3390/en14020490

URL

https://www.mdpi.com/1996-1073/14/2/490/pdf

Comments

article number: 490

License type

CC BY (attribution alone)

Open Access Mode

open journal

Open Access Text Version

final published version

Date of Open Access to the publication

at the time of publication

Ministry points / journal

140

Ministry points / journal in years 2017-2021

140

Impact Factor

3,252

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