Abstract:

A blend of polycarbonate（PC）/polyethylene terephthalate glycol（PETG）was prepared in a twin-screw extruder by melt blending. The melt index was measured. The complex viscosity was studied at different shear rates，temperatures and compositions. The results show that the introduction of PETG enhances the PC processing and rheological property significantly，PC / PETG blend appears a typical non-Newtonian fluid behavior with the performance of shear-thinning phenomenon，the complex viscosity decreases with temperature increasing，and blend viscosity decreases with the increase of PETG content.