TY - JOUR
T1 - Enhanced electrical conductivity and electromagnetic shielding efficiency of epoxy resin using graphene nanoplatelets
AU - Dong, Wei
AU - Zhao, Miao
AU - Jin, Fan Long
AU - Park, Soo Jin
N1 - Publisher Copyright:
© 2022, The Korean Institute of Chemical Engineers.
PY - 2022/7/1
Y1 - 2022/7/1
N2 - Graphene nanoplatelets (GNPs) employed as conductive fillers were added to an epoxy matrix, diglycidylether of bisphenol-A (DGEBA), to enhance the electrical conductivity and electromagnetic shielding efficiency of DGEBA. In addition, we investigated the influence of GNP fraction on the thermal properties, flexural strength, impact strength, electrical conductivity, electromagnetic shielding efficiency, and morphology of DGEBA/GNP nanocomposites. The electrical properties indicated that the electrical conductivity of DGEBA/GNP nanocomposites consisting of higher than 7.5 wt% GNPs was significantly improved compared to that of pristine DGEBA. The electromagnetic shielding efficiency of the nanocomposite showed a maximum value of 3.87 dB at 10 wt% GNPs, which is 287% higher than that of pristine DGEBA. An analysis of the fracture surfaces of the nanocomposites showed a rough morphology with numerous micro-cracks. In addition, the GNPs in the DGEBA matrix were stacked and formed a continuous conductive path at high GNP contents.
AB - Graphene nanoplatelets (GNPs) employed as conductive fillers were added to an epoxy matrix, diglycidylether of bisphenol-A (DGEBA), to enhance the electrical conductivity and electromagnetic shielding efficiency of DGEBA. In addition, we investigated the influence of GNP fraction on the thermal properties, flexural strength, impact strength, electrical conductivity, electromagnetic shielding efficiency, and morphology of DGEBA/GNP nanocomposites. The electrical properties indicated that the electrical conductivity of DGEBA/GNP nanocomposites consisting of higher than 7.5 wt% GNPs was significantly improved compared to that of pristine DGEBA. The electromagnetic shielding efficiency of the nanocomposite showed a maximum value of 3.87 dB at 10 wt% GNPs, which is 287% higher than that of pristine DGEBA. An analysis of the fracture surfaces of the nanocomposites showed a rough morphology with numerous micro-cracks. In addition, the GNPs in the DGEBA matrix were stacked and formed a continuous conductive path at high GNP contents.
KW - Conductive Filler
KW - Electrical Conductivity
KW - Electromagnetic Shielding Efficiency
KW - Epoxy Resin
KW - Graphene Nanoplatelets
UR - https://www.scopus.com/pages/publications/85123484231
U2 - 10.1007/s11814-021-1007-x
DO - 10.1007/s11814-021-1007-x
M3 - Article
AN - SCOPUS:85123484231
SN - 0256-1115
VL - 39
SP - 1968
EP - 1974
JO - Korean Journal of Chemical Engineering
JF - Korean Journal of Chemical Engineering
IS - 7
ER -