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Effects of titanium dioxide and tartrazine lake on Z-axis resolution and physical properties of resins printed by visible-light 3D printers

Wei-Ting Chang (National Yang-Ming University, Taipei, Taiwan)
Huang-Jan Hsu (National Yang-Ming University, Taipei, Taiwan and Institute of Mechanical and Electro-Mechanical Engineering and National Formosa University, Huwei, Taiwan)
Cho-Pei Jiang (Department of Power Mechanical Engineering, National Formosa University, Huwei, Taiwan)
Shyh-Yuan Lee (School of Dentistry, National Yang-Ming University, Taipei, Taiwan)
Yuan-Min Lin (Department of Dentistry, National Yang-Ming University, Taipei, Taiwan)

Rapid Prototyping Journal

ISSN: 1355-2546

Article publication date: 2 January 2018

Abstract

Purpose

The aim of this paper is to examine the effects of light controlling system that combined high refractive particles (n-TiO2 [titanium dioxide – TiO2]) and tartrazine lake dye (TL dye) on thickness, flexural strength, flexural modulus and surface details of the 3D-printed resin.

Design/methodology/approach

Influences of different concentrations of n-TiO2 and TL dye in light-cured resin formulations for 3D printing (3DP) application were evaluated, including curing thickness, flexural strength and surface details under scanning electron microscopy.

Findings

The polymerization thickness of samples containing both n-TiO2 and TL dye was lower compared to samples with TL dye solely. Samples containing more n-TiO2 and more TL dye exhibited lower flexural strength and modulus. Ramp models showed that for samples containing 1 per cent TL dye, when their n-TiO2 content increased from 1 to 5 per cent, surface laminate structures became sharper. However, when the TL dye content doubled to 2 per cent, the surface laminate structures were indefinite compared to 1 per cent TL dye-containing counterparts.

Originality value

In visible-light 3DP, light controlling system in cooperate dye with high refractive particles provides better energy distribution and scattering control. High refractive particles, dyes and light exposure time had influenced the surface resolution and mechanical properties of the 3DP products.

Keywords

Acknowledgements

This research is funded by the Ministry of Science and Technology, Taiwan. The funding number is 103-2218-E-010-004.

Citation

Chang, W.-T., Hsu, H.-J., Jiang, C.-P., Lee, S.-Y. and Lin, Y.-M. (2018), "Effects of titanium dioxide and tartrazine lake on Z-axis resolution and physical properties of resins printed by visible-light 3D printers", Rapid Prototyping Journal, Vol. 24 No. 1, pp. 160-165. https://doi.org/10.1108/RPJ-07-2016-0114

Publisher

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Emerald Publishing Limited

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