Results 281 to 290 of about 3,337,621 (340)

Dielectric properties of mixed mineral and synthetic ester oil

IET Science, Measurement & Technology, 2020
The dielectric properties of 20% synthetic ester oil mixed with mineral oil were studied for its potential applications as an insulator in transformers.
G. D. P. Mahidhar, Amizhtan Somasundaram Karthikeyan, R. Sarathi, N. Taylor, H. Edin   +4 more
semanticscholar   +1 more source

Natural ester and synthetic ester fluids, applications and maintenance

2017 10th Jordanian International Electrical and Electronics Engineering Conference (JIEEEC), 2017
These days the use of ester-based transformer fluids as an alternative to mineral oil is on the increase. The environmental and fire benefits of these fluids are being realised by more and more users, which has led to esters being used in a wide range of transformers, even up to the 400kV transmission level.
M. Lashbrook, H. Al-Amin, R. Martin
openaire   +1 more source

AC dielectric strength of synthetic ester-based Fe3O4, Al2O3 and SiO2 nanofluids — conformity with normal and weibull distributions

IEEE transactions on dielectrics and electrical insulation, 2019
This paper is aimed at studying the influence of conductive (Fe3O4) and insulating (Al2O3 and SiO2) nanoparticles at various concentrations on the AC dielectric strength of MIDEL 7131 synthetic ester.
U. Khaled, A. Beroual
semanticscholar   +1 more source

Dielectric properties of silica based synthetic ester nanofluid

IEEE transactions on dielectrics and electrical insulation, 2020
This work studies the impact of silica nanoparticles on the dielectric properties of synthetic ester oil. A stable nanofluid is prepared by addition of surfactant.
G. D. P. Mahidhar, R. Sarathi, N. Taylor, H. Edin   +3 more
semanticscholar   +1 more source

Chemical equilibria of Eosin Y and its synthetic ester derivatives in non-ionic and ionic micellar environments

, 2020
Eosin (EOS) and its synthetic ester derivatives have adequate properties to be employed as histological markers for and as drugs for photodynamic therapy.
C. F. Freitas, B. Estevão, D. S. Pellosi, I. Scarminio, W. Caetano, N. Hioka, V. R. Batistela   +6 more
semanticscholar   +1 more source

Analysis of factors affecting the effectiveness of drying cellulose materials with synthetic ester

IEEE transactions on dielectrics and electrical insulation, 2020
This article deals with the application of synthetic ester for drying cellulose insulation of distribution transformers. The most important advantages and disadvantages of the commonly used methods of drying transformer insulation on site are discussed ...
P. Przybylek, H. Moranda, H. Moscicka-Grzesiak, Mateusz K. Cybulski   +3 more
semanticscholar   +1 more source

Esters of ?-branched acids (synthetic oils)

Petroleum Chemistry U.S.S.R., 1976
Abstract 1. 1. Esters of neopentylpolyols and α-branched monocarboxylic acids were synthesized and their physical and chemical and operational properties examined. 2. 2. Synthetic esters with an increased content of quaternary carbon atoms were characterized by an increased temperature of solidification and improved lubricating properties ...
L SADOVNIKOVA, L KAGAN, L TISHKINA, A TERENTYEV, V MIKHEYEV, R SHCHEPKINA, A KLIMOV, D POVOLOTSKII   +7 more
openaire   +1 more source

Ester base stocks for synthetic lubricants

Journal of Synthetic Lubrication, 1996
AbstractThis paper reports on work on the synthesis and characterisation of mixtures of aliphatic adipates with complex esters based on polyols, adipic acid, and monohydroxy alcohols, in order to formulate new synthetic base stocks. The viscosity and pour point values of these mixtures are higher than those of adipates.
T. Vilics, F. Ciorbagiu, B. Ciucu
openaire   +1 more source

Norethisterone and levonorgestrel esters: A novel synthetic method

Steroids, 1985
Aliphatic, alicyclic and arylcarboxylic esters of norethisterone and levonorgestrel were prepared in a one-step synthesis and in near-quantitative yield using trifluoroacetic anhydride.
Leung, S.L., Karunanithy, R., Becket, G., Yeo, S.H.   +3 more
openaire   +2 more sources

Synthetic ester oil based high permittivity CaCu3Ti4O12 (CCTO) nanofluids an alternative insulating medium for power transformer

IEEE transactions on dielectrics and electrical insulation, 2019
Green insulating oils are the present industry need for an alternative insulation to mineral oil due to its higher bio-degradability. Synthetic ester oil plays a prominent role by compromising all the critical parameters for better adaptability to power ...
P. Thomas, Nandini E Hudedmani, R. Prasath, N. K. Roy, S. N. Mahato   +4 more
semanticscholar   +1 more source