Effects of annealing temperature and duration on mechanical properties of PLA plastics produced by 3D Printing

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Kartal F., Kaptan A.

European Mechanical Science, cilt.7, sa.3, ss.7-15, 2023 (Hakemli Dergi)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 7 Sayı: 3
  • Basım Tarihi: 2023
  • Doi Numarası: 10.26701/ems.1290961
  • Dergi Adı: European Mechanical Science
  • Derginin Tarandığı İndeksler: TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.7-15
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

This study aims to investigate the effect of annealing temperature and duration on the mechanical properties of
PLA (polylactic acid) plastics produced by a 3D (three-dimensional) printer. For this purpose, PLA samples were annealed at
70 °C, 85 °C, and 100 °C temperatures and for 30, 60, and 90-minute durations. As a result of the study, it was shown that
the annealing process has a significant effect on the mechanical properties of PLA plastics. Compared to the control sample,
an increase of 48% in tensile stress, 78% in the modulus of elasticity, 28% in Shore D hardness value, and 41% in bending
stress was observed. In particular, the highest mechanical properties of PLA plastics were reached after applying the annealing
process at 85 °C temperature and for 90 minutes. These results demonstrate the advantages of using 3D printers in the
production of products requiring high durability in industrial applications. Moreover, the study findings provide an important
method for optimizing the mechanical properties of materials produced with 3D printer technology.