Development and evaluation of nitrile rubbers seals for power transformer application

Detalhes bibliográficos
Autor(a) principal: Avila,Mauro Cesar de
Data de Publicação: 2022
Outros Autores: Munaro,Ana Paula, Munaro,Marilda
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Polímeros (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282022000200410
Resumo: Abstract Mineral insulating oil (MIO) and natural ester insulating (NEI) oil are used in power transformers as an insulating fluid, while elastomeric seals are usually composed of nitrile rubber (NBR). The proprieties of these seals can change in contact with insulating oil. Variation in sealant properties is undesirable in power transformers. In this work, the variation of some elastomer properties was evaluated before and after accelerated aging in MIO and NEI. The developed elastomeric compositions showed variation in the stress and strain at break after the aging test. It also appeared that MIO penetrated the samples and that dioctylphthalate (DOP) migrated or was extracted into MIO and NEI. The samples vulcanized with peroxide showed better results than those vulcanized with sulfur.
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spelling Development and evaluation of nitrile rubbers seals for power transformer applicationcompatibilitymineral insulating oilnatural ester insulatingnitrile rubberpower transformersAbstract Mineral insulating oil (MIO) and natural ester insulating (NEI) oil are used in power transformers as an insulating fluid, while elastomeric seals are usually composed of nitrile rubber (NBR). The proprieties of these seals can change in contact with insulating oil. Variation in sealant properties is undesirable in power transformers. In this work, the variation of some elastomer properties was evaluated before and after accelerated aging in MIO and NEI. The developed elastomeric compositions showed variation in the stress and strain at break after the aging test. It also appeared that MIO penetrated the samples and that dioctylphthalate (DOP) migrated or was extracted into MIO and NEI. The samples vulcanized with peroxide showed better results than those vulcanized with sulfur.Associação Brasileira de Polímeros2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282022000200410Polímeros v.32 n.2 2022reponame:Polímeros (São Carlos. Online)instname:Associação Brasileira de Polímeros (ABPol)instacron:ABPO10.1590/0104-1428.20210040info:eu-repo/semantics/openAccessAvila,Mauro Cesar deMunaro,Ana PaulaMunaro,Marildaeng2022-10-18T00:00:00Zoai:scielo:S0104-14282022000200410Revistahttp://www.scielo.br/pohttps://old.scielo.br/oai/scielo-oai.php||revista@abpol.org.br1678-51690104-1428opendoar:2022-10-18T00:00Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)false
dc.title.none.fl_str_mv Development and evaluation of nitrile rubbers seals for power transformer application
title Development and evaluation of nitrile rubbers seals for power transformer application
spellingShingle Development and evaluation of nitrile rubbers seals for power transformer application
Avila,Mauro Cesar de
compatibility
mineral insulating oil
natural ester insulating
nitrile rubber
power transformers
title_short Development and evaluation of nitrile rubbers seals for power transformer application
title_full Development and evaluation of nitrile rubbers seals for power transformer application
title_fullStr Development and evaluation of nitrile rubbers seals for power transformer application
title_full_unstemmed Development and evaluation of nitrile rubbers seals for power transformer application
title_sort Development and evaluation of nitrile rubbers seals for power transformer application
author Avila,Mauro Cesar de
author_facet Avila,Mauro Cesar de
Munaro,Ana Paula
Munaro,Marilda
author_role author
author2 Munaro,Ana Paula
Munaro,Marilda
author2_role author
author
dc.contributor.author.fl_str_mv Avila,Mauro Cesar de
Munaro,Ana Paula
Munaro,Marilda
dc.subject.por.fl_str_mv compatibility
mineral insulating oil
natural ester insulating
nitrile rubber
power transformers
topic compatibility
mineral insulating oil
natural ester insulating
nitrile rubber
power transformers
description Abstract Mineral insulating oil (MIO) and natural ester insulating (NEI) oil are used in power transformers as an insulating fluid, while elastomeric seals are usually composed of nitrile rubber (NBR). The proprieties of these seals can change in contact with insulating oil. Variation in sealant properties is undesirable in power transformers. In this work, the variation of some elastomer properties was evaluated before and after accelerated aging in MIO and NEI. The developed elastomeric compositions showed variation in the stress and strain at break after the aging test. It also appeared that MIO penetrated the samples and that dioctylphthalate (DOP) migrated or was extracted into MIO and NEI. The samples vulcanized with peroxide showed better results than those vulcanized with sulfur.
publishDate 2022
dc.date.none.fl_str_mv 2022-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282022000200410
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282022000200410
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0104-1428.20210040
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Polímeros
publisher.none.fl_str_mv Associação Brasileira de Polímeros
dc.source.none.fl_str_mv Polímeros v.32 n.2 2022
reponame:Polímeros (São Carlos. Online)
instname:Associação Brasileira de Polímeros (ABPol)
instacron:ABPO
instname_str Associação Brasileira de Polímeros (ABPol)
instacron_str ABPO
institution ABPO
reponame_str Polímeros (São Carlos. Online)
collection Polímeros (São Carlos. Online)
repository.name.fl_str_mv Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)
repository.mail.fl_str_mv ||revista@abpol.org.br
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