Abstract
ABSTRACTThis paper presents a simple strategy that utilizes the regulation of curing temperature to control the orientation of the aligned graphene nanosheets (GNSs) in styrene butadiene rubber (SBR). GNSs would settle from the well-dispersed GNSs suspensions with the styrene butadiene latex (SBL) mixture under the field of gravity to form parallel-aligned GNSs composites with enough standing time at a lower curing temperature. The vertical-aligned GNSs composites were formed by the combined effect of gravity and steam inductive force within a higher curing temperature. The detail forming mechanisms were discussed in the investigation. The parallel-aligned GNSs/SBR composites demonstrated anisotropic conductivity between the parallel and the perpendicular directions. Along with parallel direction, a percolation threshold value of the GNSs was 0.13 wt%, and 0.58 S/cm and of electric conductivity was attained when the GNSs content was 3 wt%. Along with vertical direction, it the GNSs showed insulating property.
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