Electrical property improvement of phenolic formaldehyde resin with graphene and ionic liquid

초록

The ionic liquid 3-decyl-bis(1-vinyl-1H-imidazole-3-ium-bromide) (C-10[VImBr](2)) was synthesized and its chemical structure characterized by Fourier-transform infrared spectroscopy and H-1 nuclear magnetic resonance spectroscopy. To improve the electrical conductivity of the phenolic formaldehyde (PF) resin, PF/graphene and PF/graphene/C-10[VImBr](2) composites were prepared via a melt blending and compression-curing process. The impact strength of the composites was shown to increase with the addition of increasing proportion of graphene, and with increasing proportion of C-10[VImBr](2), of up to 5 wt%. In detail, the electrical conductivity of the PF/graphene composites increased significantly from 2.3x10(-12) to 4x10(-4)S/cm as the graphene content increased from 0 to 20 wt%. Moreover, the electrical conductivity of the PF/graphene/C-10[VImBr](2) composites containing 15 wt% graphene was shown to increase from 5.6x10(-5) to 9.2x10(-4) S/cm as the content of C-10[VImBr](2) increased from 0 to 5 wt%.

키워드