Effect of the antioxidant additive ionol on the properties of transformer oils

1970 ◽  
Vol 6 (4) ◽  
pp. 300-301 ◽  
Author(s):  
R. Sh. Kuliev ◽  
N. Sh. Mamedov ◽  
G. T. Musaev
Keyword(s):  
Antioxidant Additive ◽  
Transformer Oils ◽  
Additive Ionol

scholarly journals Application of IR spectroscopy to control oxidation inhibitor (ionol) concentration in mineral transformer oils

2020 ◽  
Vol 216 ◽  
pp. 01056
Author(s):  
Marsel Sh. Garifullin ◽  
Marina N. Lyutikova ◽  
Adelya R. Kuchkarova ◽  
Azat R. Bikzinurov ◽  
Yuliya N. Solobodina
Keyword(s):  
Gas Chromatography ◽  
Ir Spectroscopy ◽  
Oxidation Process ◽  
Antioxidant Additive ◽  
Residual Concentration ◽  
Main Method ◽  
Transformer Oils ◽  
Gas Chromatographic Method ◽  
Insulating Properties

Mineral insulating oils used as dielectric and heat dissipating agent in high voltage oil-filled equipment are subject to oxidation. Oxidation results in the appearance of undesirable substances that reduce the electrical insulating properties of liquids. Therefore, to inhibit the oxidation process, an antioxidant additive is introduced into transformer oils. In the overwhelming majority, 2,6-di-tert-butyl-4-methylphenol (ionol) is used as an inhibitor. Residual concentration of ionol is a regularly monitored parameter. In Russia, the main method for determining the concentration of ionol in oil is gas chromatography. However, fourier-transform infrared spectroscopy should be considered as an alternative method for monitoring the ionol content as it has a number of advantages over the gas chromatographic method. The paper compares the results of the determination of ionol in operational transformer oils using gas chromatography and the IR method. We justified that the method of IR spectroscopy has no limitations as applied to oils from power transformers equipped with adsorption purification systems.

Efficiency of the antioxidant additive ionol in jet fuels

1979 ◽  
Vol 15 (3) ◽  
pp. 166-168
Author(s):  
Ya. B. Chertkov ◽  
E. P. Seregin ◽  
R. M. Berezina ◽  
E. A. Kunina ◽  
T. I. Kirsanova
Keyword(s):  
Jet Fuels ◽  
Antioxidant Additive ◽  
Additive Ionol

Assessment of Color Stability of Treated Leathers with Silicone Oil and Polyethylene Glycol

2014 ◽  
Vol 1 (1) ◽  
pp. 24-34
Author(s):  
Alireza K. ◽  
Hossein Ahmadi ◽  
Mohsen Mohammadi
Keyword(s):  
Ascorbic Acid ◽  
Polyethylene Glycol ◽  
Treatment Process ◽  
Color Change ◽  
Silicone Oil ◽  
Accelerated Aging ◽  
Color Stability ◽  
Antioxidant Additive ◽  
Before And After ◽  
Aesthetic Values

Lubricants and leather dressings are the most common treatments of dry and water logged historical leathers. Color change has a great importance during the time and treatment process, due to visual and aesthetic values of historic leather relics. Polyethylene glycol (PEG) and silicone oil (SiO) are frequently used leather dressings in the conservation procedures. Therefore, color stability of treated leathers with PEG and SiO were investigated before and after heat accelerated aging. Moreover, application of ascorbic acid was evaluated as an antioxidant additive for PEG (PEG+AA).Color change after treatment and aging were studied by colorimetry technique in the CIE *L*a*b system. Results indicated to severe color alteration in PEG treated and aged leathers with or without ascorbic acid. Whereas, SiO treated samples showed better stability and minimum color shift after aging. Silicone oil was characterized as the best dressing for historical leathers with compared to PEG and PEG+AA, due to its high stability and aesthetical properties.

Application evaluation of iron-containing composite for purification of power transformer oils

2019 ◽  
Vol 20 (7) ◽  
pp. 312-316
Author(s):  
Sergey Kulyukhin ◽  
◽  
Vadim Komarov ◽  
Alexandr Seliverstov ◽  
Yuliya Zakharova ◽  
...  
Keyword(s):  
Power Transformer ◽  
Transformer Oils

Effect of Oleic Acid Surface Modification on Dispersibility of TiO2 Nanoparticles in Transformer Oils

2013 ◽  
Vol 28 (6) ◽  
pp. 594-598 ◽  
Author(s):  
Yu-Zhen LÜ ◽  
Sheng-Nan ZHANG ◽  
Yue-Fan DU ◽  
Mu-Tian CHEN ◽  
Cheng-Rong LI
Keyword(s):  
Surface Modification ◽  
Oleic Acid ◽  
Tio2 Nanoparticles ◽  
Transformer Oils

Thermal Ageing of Some Insulating Fluids in Contact with Insulation Paper and Copper

2018 ◽  
Vol 68 (12) ◽  
pp. 2881-2885
Author(s):  
Iosif Lingvay ◽  
Gabriela Oprina ◽  
Livia Carmen Ungureanu ◽  
Alexandra Pica ◽  
Valerica Stanoi
Keyword(s):  
Experimental Data ◽  
Dissolved Oxygen ◽  
Copper Foil ◽  
Atmospheric Oxygen ◽  
Thermal Ageing ◽  
Dissolved Oxygen Concentration ◽  
Mineral Oils ◽  
Synthetic Ester ◽  
Cu2o Film ◽  
Transformer Oils

The behaviour of copper and insulation paper in various electrical insulating fluids (transformer oils) exposed to thermal ageing at 110�30C for 1000 hours in closed vessels (without access to atmospheric oxygen) has been studied. The processing of the comparative experimental data revealed in all cases that the concentration of dissolved oxygen in the investigated oils decreases exponentially during the heat treatment. In the presence of the copper foil, the oxygen is almost depleted (the dissolved oxygen concentration is approaching zero), indicating a higher affinity of the copper to oxygen than the affinity to oxygen of the investigated oils. In the presence of the copper foil and / or of the insulation paper, the degradation processes of the mineral oils have a pronounced character, explained by the catalytic activity of the Cu2O film that has been formed and by the paper degradation, respectively. A high thermo-oxidative stability was noticed in the case of natural triglyceride oils, particularly for the synthetic ester-based oil.

Assessment of Pomegranate Juice as Antioxidant in Extender on Cauda Epididymis Spermatozoal Quality of Buck at Refrigerated Temperature

2019 ◽  
Vol 15 (02) ◽  
pp. 26-29
Author(s):  
Amarjeet Amarjeet ◽  
C T Khasatiya ◽  
L Chaudhary
Keyword(s):  
Detrimental Effect ◽  
Egg Yolk ◽  
Antioxidant Effect ◽  
Pomegranate Juice ◽  
Antioxidant Additive ◽  
Epididymal Spermatozoa ◽  
The Dead

The present investigation was carried out to study the refrigeration preservation of the cauda epididymal retrieved spermatozoa of buck in Tris egg yolk citrate (TEYC) dilutor containing pomegranate juice as antioxidant additive. The retrieved cauda epididymal spermatozoa extended in TEYC dilutor were studied in five groups by adding different concentration of pomegranate juice as additive (0% as control T1 group and 5%, 10%, 15% and 20% as treatment T2, T3, T4 and T5 groups, respectively) and storing at refrigerated temperature up to 48 hr. The results showed that the control extender had the least dead, abnormal and HOS non-reacted sperm percent among all treatments tested and that with increasing the pomegranate juice concentration in dilutor, the percentage of the dead, abnormal and HOST non-reacted spermatozoa increased significantly. The same trend was observed at all 12 hourly storage intervals indicating its detrimental effect on epididymal sperms of bucks at refrigeration temperature. The dead, abnormal, and HOST non-reacted sperm were significantly and positively interrelated with each other (r = 0.53-0.83). It was concluded that the inclusion of pomegranate juice in TEYC dilutor did not show any beneficial/antioxidant effect on epididymal sperms of buck in fresh or refrigerated semen and in fact all the levels of pomegranate juice (5% to 20%) were detrimental to cauda epididymal spermatozoa of a buck.

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