Development of Graphene Oxide-Based Nonedible Cottonseed Nanofluids for Power Transformers

Sustainable materials, such as vegetable oils, have become an effective alternative for liquid dielectrics in power transformers. However, currently available vegetable oils for transformer application are extracted from edible products with a negative impact on food supply. So, it is proposed in th...

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Bibliographic Details
Published in:Materials 2020-06, Vol.13 (11), p.2569
Main Authors: Farade, Rizwan A., Abdul Wahab, Noor Izzri, Mansour, Diaa-Eldin A., Azis, Norhafiz B., bt. Jasni, Jasronita, Soudagar, Manzoore Elahi M., Siddappa, Vasudevamurthy
Format: Article
Language:English
Subjects:
Antioxidants
Carbon
Dielectric properties
Fatty acids
Fluids
Graphene
Heat conductivity
Measurement techniques
Metal oxides
Mineral oils
Nanofluids
Nanoparticles
Nanostructure
Oxidation
Researchers
Sodium dodecyl sulfate
Surfactants
Thermodynamic properties
Transformers
Vegetable oils
Weight
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Summary:Sustainable materials, such as vegetable oils, have become an effective alternative for liquid dielectrics in power transformers. However, currently available vegetable oils for transformer application are extracted from edible products with a negative impact on food supply. So, it is proposed in this study to develop cottonseed oil (CSO) as an electrical insulating material and cooling medium in transformers. This development is performed in two stages. The first stage is to treat CSO with tertiary butylhydroquinone (TBHQ) antioxidants in order to enhance its oxidation stability. The second and most important stage is to use the promising graphene oxide (GO) nanosheets to enhance the dielectric and thermal properties of such oil through synthesizing GO-based CSO nanofluids. Sodium dodecyl sulfate (SDS) surfactant was used as surfactant for GO nanosheets. The nanofluid synthesis process followed the two-step method. Proper characterization of GO nanosheets and prepared nanofluids was performed using various techniques to validate the structure of GO nanosheets and their stability into the prepared nanofluids. The considered weight percentages of GO nanosheets into CSO are 0.01, 0.02, 0.03 and 0.05. Dielectric and thermal properties were comprehensively evaluated. Through these evaluations, the proper weight percentage of GO nanosheets was adopted and the corresponding physical mechanisms were discussed.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma13112569