Preparation and characterization of 3D printable flexible acrylate-based resin

Keywords: 3D printing, SLA printing, flexible acrylate polymer, photopolymer, tensile strength, polymerization conversion

Abstract

The aim of this study was to prepare an acrylate-based 3D printable resin that showed flexible properties after photopolymerization
and to characterize mechanical-physicochemical properties of polymerized objects. The experimental resin
contained butyl acrylate (BA) and urethane dimethacrylate (UDMA) in 7:3 weight ratio, phenylbis(2,4,6-trimethylbenzoyl)
phosphine oxide (BAPO) in 0.2 %w/w and ethyl 4-(dimethylamino) benzoate in 0.4 %w/w. Tensile strength measurements
were performed by Intron 5544. The curing times were 1, 2 and 5 min. FT-IR spectroscopy was used for the degree
of conversion (DC) measurements on the top and bottom surfaces of specimens. The tensile strength data of resin
increased with polymerization time. Behind this is a higher degree of polymerization, which is also supported by the conversion
data. A trial printing of experimental resin revealed that this matrix can be applied in an SLA 3D printer.

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Published
2023-09-14
How to Cite
SzalókiM., Akhtar KabliA., & HegedűsC. (2023). Preparation and characterization of 3D printable flexible acrylate-based resin. Hungarian Journal of Dentistry, 116(3), 104-109. https://doi.org/10.33891/FSZ.116.3.104-109
Section
Original article

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