Role of intrinsic flaws upon flexural behaviour of a thermoplastic modified epoxy resin
- Autores
- Giannotti, Marina Inés; Galante, Maria Jose; Oyanguren, Patricia Angelica; Vallo, Claudia Ines
- Año de publicación
- 2003
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A bisphenol A-based epoxy resin (DGEBA) was modified with 15 weight percent polysulphone (PSU) and thermally cured using 4-4′diaminodiphenylsulphone (DDS). Starting from a homogeneous DGEBA/DDS/PSU mixture, the system developed a two-phase morphology upon network formation. Dynamic mechanical analysis (DMA), transmission optical microscopy (TOM) and scanning electron microscopy (SEM) studies showed that the system developed a co-continuous morphology consisting of two distinct domains. One of the domains was an epoxy rich matrix containing PSU particles while the other consisted of a dispersion of epoxy particles within a PSU rich phase. Flexural strength distributions of unmodified and thermoplastic modified epoxy resin were obtained by testing the materials in three-point bending according to the ASTM D790 protocol. The flexural behaviour of the epoxy resin was not improved by the presence of thermoplastic. In addition, the thermoplastic modified epoxy resin displayed a higher data scatter compared with the neat resin. The fracture mechanism of unmodified and thermoplastic modified epoxy resins was demonstrated to be sensitive to the intrinsic flaw distribution. The two-parameter Weibull model, which was used to analyse the experimental data, gave a good representation of the fracture loads distribution with regression coefficients of 0.99.
Fil: Giannotti, Marina Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Galante, Maria Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Oyanguren, Patricia Angelica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Vallo, Claudia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina - Materia
-
Epoxy Resins
Flexural Strength
Polysulphone
Thermoplastic Modified Epoxy Resins
Weibull Statistics - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/78350
Ver los metadatos del registro completo
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Role of intrinsic flaws upon flexural behaviour of a thermoplastic modified epoxy resinGiannotti, Marina InésGalante, Maria JoseOyanguren, Patricia AngelicaVallo, Claudia InesEpoxy ResinsFlexural StrengthPolysulphoneThermoplastic Modified Epoxy ResinsWeibull Statisticshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1https://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2A bisphenol A-based epoxy resin (DGEBA) was modified with 15 weight percent polysulphone (PSU) and thermally cured using 4-4′diaminodiphenylsulphone (DDS). Starting from a homogeneous DGEBA/DDS/PSU mixture, the system developed a two-phase morphology upon network formation. Dynamic mechanical analysis (DMA), transmission optical microscopy (TOM) and scanning electron microscopy (SEM) studies showed that the system developed a co-continuous morphology consisting of two distinct domains. One of the domains was an epoxy rich matrix containing PSU particles while the other consisted of a dispersion of epoxy particles within a PSU rich phase. Flexural strength distributions of unmodified and thermoplastic modified epoxy resin were obtained by testing the materials in three-point bending according to the ASTM D790 protocol. The flexural behaviour of the epoxy resin was not improved by the presence of thermoplastic. In addition, the thermoplastic modified epoxy resin displayed a higher data scatter compared with the neat resin. The fracture mechanism of unmodified and thermoplastic modified epoxy resins was demonstrated to be sensitive to the intrinsic flaw distribution. The two-parameter Weibull model, which was used to analyse the experimental data, gave a good representation of the fracture loads distribution with regression coefficients of 0.99.Fil: Giannotti, Marina Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Galante, Maria Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Oyanguren, Patricia Angelica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Vallo, Claudia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaElsevier2003-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/78350Giannotti, Marina Inés; Galante, Maria Jose; Oyanguren, Patricia Angelica; Vallo, Claudia Ines; Role of intrinsic flaws upon flexural behaviour of a thermoplastic modified epoxy resin; Elsevier; Polymer Testing; 22; 4; 6-2003; 429-4370142-9418CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0142941802001241info:eu-repo/semantics/altIdentifier/doi/10.1016/S0142-9418(02)00124-1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:14:49Zoai:ri.conicet.gov.ar:11336/78350instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:14:49.771CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Role of intrinsic flaws upon flexural behaviour of a thermoplastic modified epoxy resin |
title |
Role of intrinsic flaws upon flexural behaviour of a thermoplastic modified epoxy resin |
spellingShingle |
Role of intrinsic flaws upon flexural behaviour of a thermoplastic modified epoxy resin Giannotti, Marina Inés Epoxy Resins Flexural Strength Polysulphone Thermoplastic Modified Epoxy Resins Weibull Statistics |
title_short |
Role of intrinsic flaws upon flexural behaviour of a thermoplastic modified epoxy resin |
title_full |
Role of intrinsic flaws upon flexural behaviour of a thermoplastic modified epoxy resin |
title_fullStr |
Role of intrinsic flaws upon flexural behaviour of a thermoplastic modified epoxy resin |
title_full_unstemmed |
Role of intrinsic flaws upon flexural behaviour of a thermoplastic modified epoxy resin |
title_sort |
Role of intrinsic flaws upon flexural behaviour of a thermoplastic modified epoxy resin |
dc.creator.none.fl_str_mv |
Giannotti, Marina Inés Galante, Maria Jose Oyanguren, Patricia Angelica Vallo, Claudia Ines |
author |
Giannotti, Marina Inés |
author_facet |
Giannotti, Marina Inés Galante, Maria Jose Oyanguren, Patricia Angelica Vallo, Claudia Ines |
author_role |
author |
author2 |
Galante, Maria Jose Oyanguren, Patricia Angelica Vallo, Claudia Ines |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Epoxy Resins Flexural Strength Polysulphone Thermoplastic Modified Epoxy Resins Weibull Statistics |
topic |
Epoxy Resins Flexural Strength Polysulphone Thermoplastic Modified Epoxy Resins Weibull Statistics |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/2.5 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
A bisphenol A-based epoxy resin (DGEBA) was modified with 15 weight percent polysulphone (PSU) and thermally cured using 4-4′diaminodiphenylsulphone (DDS). Starting from a homogeneous DGEBA/DDS/PSU mixture, the system developed a two-phase morphology upon network formation. Dynamic mechanical analysis (DMA), transmission optical microscopy (TOM) and scanning electron microscopy (SEM) studies showed that the system developed a co-continuous morphology consisting of two distinct domains. One of the domains was an epoxy rich matrix containing PSU particles while the other consisted of a dispersion of epoxy particles within a PSU rich phase. Flexural strength distributions of unmodified and thermoplastic modified epoxy resin were obtained by testing the materials in three-point bending according to the ASTM D790 protocol. The flexural behaviour of the epoxy resin was not improved by the presence of thermoplastic. In addition, the thermoplastic modified epoxy resin displayed a higher data scatter compared with the neat resin. The fracture mechanism of unmodified and thermoplastic modified epoxy resins was demonstrated to be sensitive to the intrinsic flaw distribution. The two-parameter Weibull model, which was used to analyse the experimental data, gave a good representation of the fracture loads distribution with regression coefficients of 0.99. Fil: Giannotti, Marina Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina Fil: Galante, Maria Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina Fil: Oyanguren, Patricia Angelica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina Fil: Vallo, Claudia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina |
description |
A bisphenol A-based epoxy resin (DGEBA) was modified with 15 weight percent polysulphone (PSU) and thermally cured using 4-4′diaminodiphenylsulphone (DDS). Starting from a homogeneous DGEBA/DDS/PSU mixture, the system developed a two-phase morphology upon network formation. Dynamic mechanical analysis (DMA), transmission optical microscopy (TOM) and scanning electron microscopy (SEM) studies showed that the system developed a co-continuous morphology consisting of two distinct domains. One of the domains was an epoxy rich matrix containing PSU particles while the other consisted of a dispersion of epoxy particles within a PSU rich phase. Flexural strength distributions of unmodified and thermoplastic modified epoxy resin were obtained by testing the materials in three-point bending according to the ASTM D790 protocol. The flexural behaviour of the epoxy resin was not improved by the presence of thermoplastic. In addition, the thermoplastic modified epoxy resin displayed a higher data scatter compared with the neat resin. The fracture mechanism of unmodified and thermoplastic modified epoxy resins was demonstrated to be sensitive to the intrinsic flaw distribution. The two-parameter Weibull model, which was used to analyse the experimental data, gave a good representation of the fracture loads distribution with regression coefficients of 0.99. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-06 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/78350 Giannotti, Marina Inés; Galante, Maria Jose; Oyanguren, Patricia Angelica; Vallo, Claudia Ines; Role of intrinsic flaws upon flexural behaviour of a thermoplastic modified epoxy resin; Elsevier; Polymer Testing; 22; 4; 6-2003; 429-437 0142-9418 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/78350 |
identifier_str_mv |
Giannotti, Marina Inés; Galante, Maria Jose; Oyanguren, Patricia Angelica; Vallo, Claudia Ines; Role of intrinsic flaws upon flexural behaviour of a thermoplastic modified epoxy resin; Elsevier; Polymer Testing; 22; 4; 6-2003; 429-437 0142-9418 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0142941802001241 info:eu-repo/semantics/altIdentifier/doi/10.1016/S0142-9418(02)00124-1 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.070432 |