Abstract
This paper sheds new light on what effects the different dosage of Multi-walled Carbon Nanotube (MCN) plays on the mechanical properties of polypropylene/calcium carbonate whisker composites for seats. As a method, a twin roll mill is used to prepare the PP/ PP-g-MAH/CCW/ carbon nanotube composite with the surface modified MCN and modified calcium carbonate whisker, polypropylene (PP) and PP-g-MAH by melt blending mode, thereby to compare how the mechanical properties of PP/PP-g-MAH/CCW composite are subjected to different doses of modified MCN. The findings reveal that the multi-walled carbon nanotubes, if finished by mixed acid, will disperse uniformly in the composite, and well bond with the polymer substrate interface, toughing and strengthening the composite material; but when the mass fraction of carbon nanotubes gets higher, the agglomeration will appear, which in turn reduces the mechanical properties of the composite. When the mass fraction of carbon nanometer is 0.5% or so, the mechanical properties of the composite perform the best.
