Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Livia Carmen Ungureanu"'
Publikováno v:
Revista de Chimie. 69:1621-1627
The amounts of flammable gases formed in some transformer oils during the long-term storage (1000 hours) at 110 � 3�C in closed containers (limited access to atmospheric oxygen) were determined qualitatively and quantitatively by gas chromatograp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8cd4dd7024f460195b919f82d8e566ab
https://doi.org/10.37358/rc.18.7.6383
https://doi.org/10.37358/rc.18.7.6383
Autor:
Traian Rus, Adriana Mariana Bors, Livia Carmen Ungureanu, Iosif Lingvay, Eduard Marius Lungulescu
Publikováno v:
Materiale Plastice. 55:201-206
ATR / FTIR and DSC techniques have been used to evaluate the thermal stability of some ageing paint materials by heat treatment while immersion in natural ester-based electro-insulating oil. Experimental determinations have highlighted the fact that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::945bcb0f691a0e8ab66b7c78467f7324
https://doi.org/10.37358/mp.18.2.4995
https://doi.org/10.37358/mp.18.2.4995
Publikováno v:
Revista de Chimie. 69:1139-1144
For the purpose of using three different types of painting materials for the inner protection of the transformer vats, their behavior was studied under actual conditions of operation in the transformer (thermal stress in electro-insulating fluid base
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94715d63bb928f0eee27f85ed3d00312
https://doi.org/10.37358/rc.18.5.6276
https://doi.org/10.37358/rc.18.5.6276
Autor:
Virgil Marinescu, Alina Ruxana Caramitu, Traian Rus, Livia Carmen Ungureanu, Danut-Ionel Vaireanu, Adriana Mariana Bors
Publikováno v:
Materiale Plastice. 55:28-32
This paper describes the evaluation of the aging process of some polymeric painting materials subjected to a thermal treatment in electro insulating fluids, based on natural esters (vegetable oils). The paint layers surface morphology was comparative
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4a8800640853db8e9976d8e8980039a
https://doi.org/10.37358/mp.18.1.4957
https://doi.org/10.37358/mp.18.1.4957
Publikováno v:
Revista de Chimie. 69:91-95
The durability and safe operation of electrical equipment and devices with mixed insulation systems (solid/fluid - electro-insulating paper/oil) is determined by the insulation aging under simultaneous and synergic actions of electrical, thermal and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2f5675dae5171445127dd49fc98be3b
https://doi.org/10.37358/rc.18.1.6050
https://doi.org/10.37358/rc.18.1.6050
Publikováno v:
Revista de Chimie. 68:2881-2885
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bc84c6774ce3e6a9500196b90b2f760
https://doi.org/10.37358/rc.17.12.5999
https://doi.org/10.37358/rc.17.12.5999
Autor:
Florentina Serban, Valerica Stanoi, Gabriela Oprina, Livia Carmen Ungureanu, Iosif Lingvay, Alexandra Pica
Publikováno v:
Revista de Chimie. 68:2551-2555
The behaviour of some insulating fluids in contact with copper foil and / or insulation paper under thermal stress (110�30C for 1000 hours), in a closed system (the access of atmospheric oxygen being limited), has been studied by determining the ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::317c36f2b5813de87a3afe0137f58ebc
https://doi.org/10.37358/rc.17.11.5926
https://doi.org/10.37358/rc.17.11.5926