Optimization Of 3D Printing Of Shape Memory Polymer
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Date
2022-07-20
Authors
Gun, Yong Yin
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
3D printing is a popular technology in current manufacturing environment since
it allows flexible fabrication of complicated product design at a reasonable price. It is
an addictive manufacturing process which construct things by layering melted filament.
Shape Memory Effect (SME) is a property of Shape Memory Polymer (SMP) where it
was able to remember their primary shape, maintaining a secondary shape after being
exposed to a strain change, and then returning to the primary shape when external
stimulation is applied. In recent years, SMP is one of the widely discussed topics under
the 3D printing research field. In this paper, the SME of 3D printed polymer with 75%
polylactic acid (PLA) and 25% thermoplastic-urethane (TPU) was investigated. The
cycle time for the specimen to return to its primary shape after heated was recorded and
the results showed that the most significant factors affecting the SME were the printing
temperature and layer height. The tensile test showed that layer height is the most
significant factor affecting the responses. Therefore, as suggestions for future work,
infill density can be used to replace the printing speed to study the potential of SMP.