Abstract
Epoxy resins are widely used polymers in the automotive and aerospace fields. Different blends of novel biodegradable resins have been studied in the last years in order to provide sustainability while maintaining the same properties of epoxy resins. Bio-based thermoset resins made with acrylated epoxidized soybean oil are well-studied in different vat polymerization techniques. The present work compares a bio-based resin and a petroleum-based resin. A benchmark with different features was designed and manufactured by a VAT photopolymerization process using both materials; measured with an optical scanning device; thus, the dimensional deviations were analyzed through inspection software. Tensile and flexural specimens were manufactured with the same procedure and tested with a dynamometer machine. Therefore, the comparison between a biodegradable resin and a petroleum-based resin is discussed in terms of the quality and mechanical performances of manufactured parts, considering the use of identical printing conditions. Some parts are required to satisfy both the requirements at the same time, such as the gears. Therefore, dimensional accuracy and mechanical strength need to be controlled and evaluated in a unique final quantification. This work proposes a novelty performance index to quantify dimensional accuracy and mechanical strength simultaneously. By combining the two aspects it is possible to define the overall performance obtained with the used material, optimizing the manufacturing process by choosing the proper material for each purpose.
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Valentina Vendittoli. The first draft of the manuscript was written by Valentina Vendittoli, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Vendittoli, V., Polini, W. & Walter, M.S.J. An overall performance index to quantify dimensional accuracy and mechanical strength of parts manufactured through VAT photopolymerization in biodegradable and non-biodegradable resin. Int J Adv Manuf Technol 128, 5491–5502 (2023). https://doi.org/10.1007/s00170-023-12285-1
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DOI: https://doi.org/10.1007/s00170-023-12285-1