Effect of nozzle temperature on the mechanical properties of FDM ۳D-printed PLA materials

Fused deposition modeling is one of the most common method utilized in the additive manufacturing processof polymers. In this research, the influence of various nozzle temperatures, i.e., ۲۰۰, ۲۱۰, and ۲۲۰ ˚C is studied on theelastic modulus and ultimate tensile strength of poly lactic acid (PLA). Other constant parameters are: The layerthickness of ۰.۳ mm, the printing speed of ۴۵ mm/s, infill density ۱۰۰ %, printing angle of ۹۰ degree. The experimentalresults indicated that in the three angles, mentioned as constant parameters, by increasing the nozzle temperature from۲۰۰ to ۲۲۰ ˚C, both elastic modulus and ultimate tensile stress significantly increase. Furthermore, no order was seen inthe changing of failure strain by increasing the nozzle temperature.

کلیدواژه ها:

Fused deposition modeling ، Poly lactic acid ، Elastic modulus ، Ultimate tensile stress