Figure 1
Composite preparation and 3D printing.
a, Picture of graphite flakes. b,c, Dispersions of GO and ABS in NMP solvent. d,e, Pictures showing a homogeneous mixture of GO-ABS in NMP before and after chemical reduction by hydrazine hydrate at 95 °C for 1 h. Brownish GO-ABS turned into black G-ABS suspension during chemical reduction. f, G-ABS coagulations obtained after isolation (e) with water. g, G-ABS composite powder after washing and drying. h, Schematic illustration of fused deposition modelling 3D printing process. Inset is the graphene-based filament winding on a roller. The filament was deposited through a nozzle onto a heated building plated, whose temperature was set at 80 °C. i, A typical 3D printed model using 3.8 wt% G-ABS composite filament, scale bar: 1 cm.
