TY - JOUR
T1 - Superior electromagnetic interference shielding performances of epoxy composites by introducing highly aligned reduced graphene oxide films
AU - Liang, Chaobo
AU - Song, Ping
AU - Qiu, Hua
AU - Huangfu, Yiming
AU - Lu, Yuanjin
AU - Wang, Lei
AU - Kong, Jie
AU - Gu, Junwei
N1 - Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/9
Y1 - 2019/9
N2 - Reduced graphene oxide films (RGFs) were fabricated by the method of bar-coating followed by chemical and thermal reduction. And the RGFs/epoxy resin (RGFs/EP) electromagnetic interference (EMI) shielding composites were prepared by introducing RGFs into EP matrix via pre-arrangement method. The introduction of highly aligned RGFs with layered structure was more conducive to improving the EMI shielding effectiveness (SE) and in-plane electrical conductivities of the RGFs/EP EMI shielding composites. A superior EMI SE value of 82 dB was achieved for 8-RGFs/EP EMI shielding composites at X-band, almost 41 times higher than that of pure EP (∼2 dB). Superior EMI shielding performances are mainly attributed to multiple reflection, absorption and scattering inside and between RGFs interlayers, and the shielding mechanism is mainly ascribed to absorption. Meantime, the obtained in-plane electrical conductivitiy significantly increases from 10−12 S/m of pure EP to 591.7 S/m of the 8-RGFs/EP EMI shielding composites.
AB - Reduced graphene oxide films (RGFs) were fabricated by the method of bar-coating followed by chemical and thermal reduction. And the RGFs/epoxy resin (RGFs/EP) electromagnetic interference (EMI) shielding composites were prepared by introducing RGFs into EP matrix via pre-arrangement method. The introduction of highly aligned RGFs with layered structure was more conducive to improving the EMI shielding effectiveness (SE) and in-plane electrical conductivities of the RGFs/EP EMI shielding composites. A superior EMI SE value of 82 dB was achieved for 8-RGFs/EP EMI shielding composites at X-band, almost 41 times higher than that of pure EP (∼2 dB). Superior EMI shielding performances are mainly attributed to multiple reflection, absorption and scattering inside and between RGFs interlayers, and the shielding mechanism is mainly ascribed to absorption. Meantime, the obtained in-plane electrical conductivitiy significantly increases from 10−12 S/m of pure EP to 591.7 S/m of the 8-RGFs/EP EMI shielding composites.
KW - A. Polymer-matrix composites (PMCs)
KW - B. Electrical properties
KW - D. Electron microscopy
KW - E. Casting
UR - http://www.scopus.com/inward/record.url?scp=85068358290&partnerID=8YFLogxK
U2 - 10.1016/j.compositesa.2019.105512
DO - 10.1016/j.compositesa.2019.105512
M3 - 文章
AN - SCOPUS:85068358290
SN - 1359-835X
VL - 124
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
M1 - 105512
ER -