Abstract
The dimensional accuracy of injection molded carbon fiber reinforced thermoplastics (CFRTP) was studied on the view point of viscoelastic behavior during molding process. First, the thermo-mechanical model was introduced to describe the thermo-viscoelastic behavior of CFRTP during molding process. Second, the warpage of CFRTP plate after molding was predicted for the typical cases of molding conditions by using the thermo-mechanical model. Third, the warpage of injection molded box made by thermoplastics and CFRTP were measured after molding process under various conditions. Finally, the mechanisms controlling the dimensional accuracy of injection molded CFRTP were discussed by comparing the predicted and experimental warps of its box.
