Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Mechanical properties and adhesive behavior of epoxy-graphene nanocomposites
Year:2017
Research Areas
  • Chemistry
Information
Abstract
The influence of the type and content of graphene nanoplatelets (GNP) on the thermo-mechanical and adhesive properties of epoxy-graphene nanocomposites was investigated. Two types of graphene have been used: unfunctionalized and functionalized graphene. The functionalized graphene (GNPNH2) contains amine groups that react with the epoxy prepolymer. Two types of un-functionalized graphene with different nanoplatelet dimensions were used. A universal testing machine was used to determine the Young's modulus, deformation at break, mechanical strength and toughness at 22 ºC. Dynamic Mechanical Thermal Analysis experiments were performed to compare the glass transition temperature and the storage modulus in the glassy and rubber states. Epoxy-graphene nanocomposites were used as adhesives on aluminum substrates in single lap geometry, and the shear strengths were determined. All nanocomposites presented higher modulus than the neat epoxy thermoset. The increase in the storage modulus was higher in the in the rubbery state than in the glassy state. Nanocomposites showed lower tensile strength and were more fragile than the neat epoxy thermoset, which was attributed to the aggregation of graphene nanoplatelets. Epoxy/GNPNH2 nanocomposites presented a lower decrease of tensile strength and less fragile behavior. Epoxy/graphene adhesives presented lower lap shear strength than neat epoxy adhesive. Increasing GNP content caused the lap shear strength to decrease. Acepted 14 noviembre 2017 Available online 13 December 2017
International
Si
JCR
Si
Title
International Journal of Adhesion And Adhesives
ISBN
0143-7496
Impact factor JCR
2,211
Impact info
Volume
84
10.1016/j.ijadhadh.2017.12.004
Journal number
From page
119
To page
125
Month
SIN MES
Ranking
Acepted14 noviembre 2017 Available online 13 December 2017
Participants
  • Autor: Catalina Salom Coll (UPM)
  • Autor: Margarita Gonzalez Prolongo (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Propiedades de materiales Poliméricos (GPMP)
  • Departamento: Materiales y Producción Aeroespacial
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)