Preparation and Characterization for the Thermal Stability and Mechanical Property of PLA and PLA/CF Samples Built by FFF Approach

Currently, the mechanical performances of polylactic acid (PLA) samples prepared using fused filament fabrication (FFF) technique are relatively poor. Hence, carbon fiber (CF) is used to improve thermal stability and property FFF-ed PLA in this paper. The crystalline structure, stability, melt flow rate, tensile strength fractured surface morphology PLA/CF were investigated with an X-ray diffraction device, differential scanning calorimeter, thermogravimetric analyzer, rate equipment, universal test machine electron microscope, respectively. Meanwhile, reinforcement mechanism CF on was also analyzed. XRD results revealed that peaks intensities sample obviously lower than those sample. TGA DSC curves illustrated initial decomposition temperature, crystallinity improved significantly. 91.58 MPa, which 42.49% higher Moreover, SEM images showed behavior varied from brittle fracture ductile after introduction CF. concluded a feasible for enhancing