TY - GEN
T1 - Enhancing mechanical properties of graphene / epoxy nanocomposites using few-layer graphene produced by liquid phase exfoliation
AU - Oba, K.
AU - Arao, Y.
AU - Hosoi, A.
AU - Kawada, H.
PY - 2020
Y1 - 2020
N2 - In this study, few-layer graphenes (FLGs) were produced by new liquid phase exfoliation (LPE), exfoliation of graphite with weak acid salts. A high concentration dispersion of FLGs in low-boiling point solvents is successfully carried out, achieved by binding molecules with a dispersing function. And then graphene/epoxy nanocomposites were fabricated and tensile properties were evaluated in order to understand the effect of FLGs introduced into the resin. Graphene/epoxy nanocomposite showed improved mechanical properties. Tensile strength and fracture strain were increased by 11.5% and 55.6% compared with as-received one's. Especially, the improvement of fracture strain was outstanding, which indicated that adding FLGs had a positive impact on suppressing effect on crack propagation and improving fracture toughness of matrix resin. These beneficial results were derived from crack trapping by uniformly dispersed FLGs.
AB - In this study, few-layer graphenes (FLGs) were produced by new liquid phase exfoliation (LPE), exfoliation of graphite with weak acid salts. A high concentration dispersion of FLGs in low-boiling point solvents is successfully carried out, achieved by binding molecules with a dispersing function. And then graphene/epoxy nanocomposites were fabricated and tensile properties were evaluated in order to understand the effect of FLGs introduced into the resin. Graphene/epoxy nanocomposite showed improved mechanical properties. Tensile strength and fracture strain were increased by 11.5% and 55.6% compared with as-received one's. Especially, the improvement of fracture strain was outstanding, which indicated that adding FLGs had a positive impact on suppressing effect on crack propagation and improving fracture toughness of matrix resin. These beneficial results were derived from crack trapping by uniformly dispersed FLGs.
KW - Epoxy
KW - Graphene
KW - Liquid phase exfoliation
KW - Mechanical properties
KW - Nanocomposites
UR - http://www.scopus.com/inward/record.url?scp=85084163790&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85084163790&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85084163790
T3 - ECCM 2018 - 18th European Conference on Composite Materials
BT - ECCM 2018 - 18th European Conference on Composite Materials
PB - Applied Mechanics Laboratory
T2 - 18th European Conference on Composite Materials, ECCM 2018
Y2 - 24 June 2018 through 28 June 2018
ER -