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Researchers Publish Findings on Effects of Annealing on FDM Plastics

February 5, 2023

A team of researchers from universities in China and Belgium have published the results of a study that looked at the effects of thermal annealing on the performance of 3D printed polymer parts made using FDM processes.

The study used both semi-crystalline and amorphous filaments and annealed them at different temperatures (60, 110 and 150 °C) for various durations ranging from 50 to 6400 seconds.

The results showed that annealing led to an increase in flexural strength and Young’s modulus by a maximum of 10% due to the development of crystallites. However, the morphological changes from annealing led to a reduction in performance against local tensile deformation. For amorphous parts, the degradation was approximately 25% in both the flexural strength and modulus.

Thermal history plot of annealing process
Thermal history plot of annealing process. (Image credit: Wangwang Yu et.al)

This study adds to the ongoing research into the role of thermal annealing in improving the mechanical integrity of 3D printed parts, with a focus on its effect on physical, thermal and mechanical performance.

You can read the full paper, titled “The effects of thermal annealing on the performance of material extrusion 3D printed polymer parts” over at this link.

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About the author | Phillip Keane
Phillip is an aerospace engineer from UK. He is a graduate of Coventry University (UK), International Space University (France) and Nanyang Technological University (Singapore), where he studied Advanced Manufacturing at the Singapore Centre for 3D Printing.
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