Curado de nanocompuestos grafeno-epoxi : influencia de la relación entrecruzante/resina = Curing of graphene-epoxy nanocomposites : influence of cross-linking/resin ratio

Salom Coll, Catalina and Gonzalez Prolongo, Margarita (2017). Curado de nanocompuestos grafeno-epoxi : influencia de la relación entrecruzante/resina = Curing of graphene-epoxy nanocomposites : influence of cross-linking/resin ratio. "Materiales compuestos", v. 12 (n. 4); pp. 1-4. ISSN 2531-0739.

Description

Title: Curado de nanocompuestos grafeno-epoxi : influencia de la relación entrecruzante/resina = Curing of graphene-epoxy nanocomposites : influence of cross-linking/resin ratio
Author/s:
  • Salom Coll, Catalina
  • Gonzalez Prolongo, Margarita
Item Type: Article
Título de Revista/Publicación: Materiales compuestos
Date: 2017
ISSN: 2531-0739
Volume: 12
Subjects:
Freetext Keywords: Grafeno-epoxi. Entrecruzante. Curado
Faculty: E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM)
Department: Materiales y Producción Aeroespacial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

En el presente trabajo se estudia la influencia del tipo de grafeno (GNP) y las diferentes proporciones agente entrecruzante (XB) en el curado de dispersiones grafeno-epoxi y en la temperatura de transición vítrea (Tg) del nanocomposite formado. La resina epoxi tipo DGEBA (LY) se ha entrecruzado con una poliamina aromática (XB). Se han utilizado dos tipos de grafeno: uno no funcionalizado (GNPn) y otro amino funcionalizado (GNPNH2.). En los dos sistemas se han estudiado 5 composiciones con diferente relación XB/LY y se ha variado el contenido de grafeno (6 y 10% en peso). La reacción de curado se ha estudiado por Calorimetría Diferencial de Barrido. Se ha observado que la presencia de grafeno acelera la reacción de curado y que la entalpía de reacción depende de la estequiometría y del contenido en grafeno. Se ha encontrado también que la variación de la Tg del material con la estequiometria, depende del protocolo de curado PRESENTADO EN: XII Congreso Nacional de Materiales Compuestos - MATCOMP 2017 Donostia / San Sebastián, 21, 22 y 23 Junio 2017. In the present work the influence of the graphene type (GNP) and the different crosslinking agent ratios in the curing of graphene-epoxy dispersions and in the glass transition temperature (Tg) of the formed nanocomposite is studied. The epoxy resin type DGEBA (LY) has been crosslinked with an aromatic polyamine (XB). Two types of graphene have been used: one non-functionalized (GNPn) and another functionalized with amino groups (GNPNH2). In the two systems, 5 compositions with different XB / LY ratios have been studied and, the content of graphene has been varied (6 and 10% by weight). The curing reaction has been studied by Differential Scanning Calorimetry. It has been observed that the presence of graphene accelerates the curing reaction and that the enthalpy of reaction depends on stoichiometry and graphene content. It has also been found that the variation of the Tg of the material with the stoichiometry, depends on the curing protocol.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainMAT2013-46695-C3UnspecifiedUnspecifiedUnspecified
Government of SpainMAT2016-78825-C2)UnspecifiedUnspecifiedUnspecified

More information

Item ID: 50620
DC Identifier: http://oa.upm.es/50620/
OAI Identifier: oai:oa.upm.es:50620
Official URL: https://revista.aemac.org/materiales-compuestos/article/view/212
Deposited by: Memoria Investigacion
Deposited on: 04 Oct 2018 12:00
Last Modified: 30 Apr 2019 12:50
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