The role of antioxidant on propellant binder reactivity during thermal aging

Detalhes bibliográficos
Autor(a) principal: Villar,Luciene Dias
Data de Publicação: 2010
Outros Autores: Silva,Rafael Filadelfo da, Diniz,Milton Faria, Takahashi,Marta Ferreira K., Rezende,Luis Cláudio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of Aerospace Technology and Management (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462010000200163
Resumo: Abstract: Thermal aging of hydroxy-terminated polybutadiene (HTPB) stabilized with 2,6-di(tert-butyl)hydroxytoluene (BHT) was carried out at 60ºC from 1 to 11 weeks. Samples of 200 mL were stored in sealed 500-mL Erlenmeyer flasks under atmospheric pressure or vacuum and periodically withdrawn for physical and chemical analysis, infrared spectroscopy characterization and measurement of HTPB/IPDI (isophorone diisocyanate) reactivity, expressed as pot life. Mechanical properties of the cured polyurethane, prepared from aged HTPB, were assayed by uniaxial tension tests. Despite the unchanged chemical structure, an increase in HTPB/IPDI binder reactivity was observed, being correlated with BHT depletion measured as color change (yellowing). Aging of HTPB showed no interference on mechanical properties of the cured polyurethane.
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spelling The role of antioxidant on propellant binder reactivity during thermal agingAntioxidantComposite propellantHTPB propellantPolyurethane resinStorageAbstract: Thermal aging of hydroxy-terminated polybutadiene (HTPB) stabilized with 2,6-di(tert-butyl)hydroxytoluene (BHT) was carried out at 60ºC from 1 to 11 weeks. Samples of 200 mL were stored in sealed 500-mL Erlenmeyer flasks under atmospheric pressure or vacuum and periodically withdrawn for physical and chemical analysis, infrared spectroscopy characterization and measurement of HTPB/IPDI (isophorone diisocyanate) reactivity, expressed as pot life. Mechanical properties of the cured polyurethane, prepared from aged HTPB, were assayed by uniaxial tension tests. Despite the unchanged chemical structure, an increase in HTPB/IPDI binder reactivity was observed, being correlated with BHT depletion measured as color change (yellowing). Aging of HTPB showed no interference on mechanical properties of the cured polyurethane.Departamento de Ciência e Tecnologia Aeroespacial2010-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462010000200163Journal of Aerospace Technology and Management v.2 n.2 2010reponame:Journal of Aerospace Technology and Management (Online)instname:Departamento de Ciência e Tecnologia Aeroespacial (DCTA)instacron:DCTA10.5028/jatm.2010.02027310info:eu-repo/semantics/openAccessVillar,Luciene DiasSilva,Rafael Filadelfo daDiniz,Milton FariaTakahashi,Marta Ferreira K.Rezende,Luis Cláudioeng2017-05-25T00:00:00Zoai:scielo:S2175-91462010000200163Revistahttp://www.jatm.com.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||secretary@jatm.com.br2175-91461984-9648opendoar:2017-05-25T00:00Journal of Aerospace Technology and Management (Online) - Departamento de Ciência e Tecnologia Aeroespacial (DCTA)false
dc.title.none.fl_str_mv The role of antioxidant on propellant binder reactivity during thermal aging
title The role of antioxidant on propellant binder reactivity during thermal aging
spellingShingle The role of antioxidant on propellant binder reactivity during thermal aging
Villar,Luciene Dias
Antioxidant
Composite propellant
HTPB propellant
Polyurethane resin
Storage
title_short The role of antioxidant on propellant binder reactivity during thermal aging
title_full The role of antioxidant on propellant binder reactivity during thermal aging
title_fullStr The role of antioxidant on propellant binder reactivity during thermal aging
title_full_unstemmed The role of antioxidant on propellant binder reactivity during thermal aging
title_sort The role of antioxidant on propellant binder reactivity during thermal aging
author Villar,Luciene Dias
author_facet Villar,Luciene Dias
Silva,Rafael Filadelfo da
Diniz,Milton Faria
Takahashi,Marta Ferreira K.
Rezende,Luis Cláudio
author_role author
author2 Silva,Rafael Filadelfo da
Diniz,Milton Faria
Takahashi,Marta Ferreira K.
Rezende,Luis Cláudio
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Villar,Luciene Dias
Silva,Rafael Filadelfo da
Diniz,Milton Faria
Takahashi,Marta Ferreira K.
Rezende,Luis Cláudio
dc.subject.por.fl_str_mv Antioxidant
Composite propellant
HTPB propellant
Polyurethane resin
Storage
topic Antioxidant
Composite propellant
HTPB propellant
Polyurethane resin
Storage
description Abstract: Thermal aging of hydroxy-terminated polybutadiene (HTPB) stabilized with 2,6-di(tert-butyl)hydroxytoluene (BHT) was carried out at 60ºC from 1 to 11 weeks. Samples of 200 mL were stored in sealed 500-mL Erlenmeyer flasks under atmospheric pressure or vacuum and periodically withdrawn for physical and chemical analysis, infrared spectroscopy characterization and measurement of HTPB/IPDI (isophorone diisocyanate) reactivity, expressed as pot life. Mechanical properties of the cured polyurethane, prepared from aged HTPB, were assayed by uniaxial tension tests. Despite the unchanged chemical structure, an increase in HTPB/IPDI binder reactivity was observed, being correlated with BHT depletion measured as color change (yellowing). Aging of HTPB showed no interference on mechanical properties of the cured polyurethane.
publishDate 2010
dc.date.none.fl_str_mv 2010-08-01
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=S2175-91462010000200163
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462010000200163
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.5028/jatm.2010.02027310
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 Departamento de Ciência e Tecnologia Aeroespacial
publisher.none.fl_str_mv Departamento de Ciência e Tecnologia Aeroespacial
dc.source.none.fl_str_mv Journal of Aerospace Technology and Management v.2 n.2 2010
reponame:Journal of Aerospace Technology and Management (Online)
instname:Departamento de Ciência e Tecnologia Aeroespacial (DCTA)
instacron:DCTA
instname_str Departamento de Ciência e Tecnologia Aeroespacial (DCTA)
instacron_str DCTA
institution DCTA
reponame_str Journal of Aerospace Technology and Management (Online)
collection Journal of Aerospace Technology and Management (Online)
repository.name.fl_str_mv Journal of Aerospace Technology and Management (Online) - Departamento de Ciência e Tecnologia Aeroespacial (DCTA)
repository.mail.fl_str_mv ||secretary@jatm.com.br
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