Effects of TPU on the mechanical properties, fracture toughness, morphology, and thermal analysis of 3D‐printed ABS‐TPU blends by FDM

Soltanmohammadi, K, Rahmatabadi, D, Aberoumand, M, Soleyman, E, Ghasemi, I, Baniassadi, M, Abrinia, K, Bodaghi, M ORCID: https://orcid.org/0000-0002-0707-944X and Baghani, M, 2024. Effects of TPU on the mechanical properties, fracture toughness, morphology, and thermal analysis of 3D‐printed ABS‐TPU blends by FDM. Journal of Vinyl and Additive Technology. ISSN 1083-5601

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Abstract

In this paper, blends of ABS-TPU with two different weight percentages of TPU were prepared using fused deposition modeling technology. The effect of adding TPU on the fracture toughness of ABS and mechanical properties was comprehensively studied. Tensile, compression, fracture toughness, and shear tests were conducted on the 3D-printed samples. Thermal and microstructural analyses were performed using dynamic mechanical thermal analysis (DMTA), and scanning electron microscope (SEM). The DMTA results showed that adding TPU decreased the storage modulus and the glass transition temperature of ABS, as well as its peak intensity. The mechanical test results showed that adding TPU decreased the strength but increased the formability and elongation of the samples. Fracture tests showed that the addition of TPU decreased the maximum force needed for a crack to initiate. The force required for crack initiation decreased from 568.4 N for neat ABS to 335.3 N for ABS80 and 123.2 N for ABS60. The ABS60 blend exhibited the highest strength against crack growth, indicating that TPU can change the behavior of ABS from brittle to ductile. Shear test results and SEM images also showed good adhesion strength between the printed samples for all three specimens, indicating their good printability. Adding TPU resulted in a reduction in the size and number of voids and holes between the printed layers.

Item Type:	Journal article
Publication Title:	Journal of Vinyl and Additive Technology
Creators:	Soltanmohammadi, K., Rahmatabadi, D., Aberoumand, M., Soleyman, E., Ghasemi, I., Baniassadi, M., Abrinia, K., Bodaghi, M. and Baghani, M.
Publisher:	Wiley
Date:	20 February 2024
ISSN:	1083-5601
Identifiers:	Number Type 10.1002/vnl.22097 DOI 1866418 Other
Rights:	© 2024 The Authors. Journal of Vinyl & Additive Technology published by Wiley Periodicals LLC on behalf of Society of Plastics Engineers. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Divisions:	Schools > School of Science and Technology
Record created by:	Laura Ward
Date Added:	27 Feb 2024 11:18
Last Modified:	27 Feb 2024 11:18
URI:	https://irep.ntu.ac.uk/id/eprint/50958

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