Development and evaluation of nitrile rubbers seals for power transformer application
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
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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Polímeros (São Carlos. Online) |
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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 |
_version_ |
1754212591388852224 |