TY - JOUR
T1 - 3-Phase Hierarchical Graphene-based Epoxy Nanocomposite Laminates for Automotive Applications
AU - Elmarakbi, Ahmed
AU - Karagiannidis, Panagiotis
AU - Ciappa , Alessandra
AU - Innocente, Franco
AU - Galise, Francesco
AU - Martorana, Brunetto
AU - Bertocchi, Francesco
AU - Cristiano, Francesco
AU - Villaro Ábalos, Elvira
AU - Gómez, Julio
PY - 2019/10/1
Y1 - 2019/10/1
N2 - Two different types of graphene flakes were produced following solution processing methods and dispersed using shear mixing in a bifunctional (A) and a multifunctional (B) epoxy resin at a concentration of 0.8 and 0.6 wt% respectively. The graphene/epoxy resin mixtures were used to impregnate unidirectional carbon fibre tapes. These prepregs were stacked (seven plies) and cured to produce laminates. The interlaminar fracture toughness (mode-I) of the carbon fiber/graphene epoxy laminates with resin B showed over 56% improvement compared with the laminate without graphene. Single lap joints were prepared using the laminates as adherents and polyurethane adhesives (Sika 7666 and Sika 7888). The addition of graphene improved considerably the adhesion strength from 3.3 to 21 MPa (sample prepared with resin A and Sika 7888) highlighting the potential of graphene as a secondary filler in carbon fibre reinforced polymer composites.
AB - Two different types of graphene flakes were produced following solution processing methods and dispersed using shear mixing in a bifunctional (A) and a multifunctional (B) epoxy resin at a concentration of 0.8 and 0.6 wt% respectively. The graphene/epoxy resin mixtures were used to impregnate unidirectional carbon fibre tapes. These prepregs were stacked (seven plies) and cured to produce laminates. The interlaminar fracture toughness (mode-I) of the carbon fiber/graphene epoxy laminates with resin B showed over 56% improvement compared with the laminate without graphene. Single lap joints were prepared using the laminates as adherents and polyurethane adhesives (Sika 7666 and Sika 7888). The addition of graphene improved considerably the adhesion strength from 3.3 to 21 MPa (sample prepared with resin A and Sika 7888) highlighting the potential of graphene as a secondary filler in carbon fibre reinforced polymer composites.
KW - Graphene
KW - Carbon fibre reinforced polymer (CFRP)
KW - Fracture toughness
KW - Shear lap joints
UR - http://www.scopus.com/inward/record.url?scp=85069954084&partnerID=8YFLogxK
U2 - 10.1016/j.jmst.2019.05.033
DO - 10.1016/j.jmst.2019.05.033
M3 - Article
AN - SCOPUS:85069954084
SN - 1005-0302
VL - 35
SP - 2169
EP - 2177
JO - Journal of Materials Science and Technology
JF - Journal of Materials Science and Technology
IS - 10
ER -