Fracture and Structural Integrity e-ISSN 1971-8993 Open access
Miscellanea Vol. 13, No. 48 (2019)

Effect of protective coatings on the water absorption and mechanical properties of 3D printed PLA

Author and affiliation details
DOI
10.3221/IGF-ESIS.48.68
Pages
748-756
Published
Published inVol. 13, No. 48 (2019)Go to the issue

Abstract

This work aims to study the influence of protective coatings on the water absorption and mechanical properties of 3D printed poly–lactic acid (PLA) parts. The PLA parts were fabricated with different levels of the 3D printing process parameters, aiming to define samples with distinct strength and ductility/toughness characteristics. Water absorption tests following the standard ASTM D570–98 were performed on uncoated and coated PLA specimens. The effectiveness of two protective coatings based on acrylic and polyurethane varnish on reducing water absorption was evaluated. Both protective coatings have shown being effective on preventing water absorption by the PLA, with polyurethane presenting the best performance reducing water absorption by 38%. Tensile tests were carried out to determine the ultimate tensile strength, elastic modulus, yield tensile strength, fracture strain and toughness of specimens, before and after the application of protective coatings. The polyurethane protective coating also benefits the tensile properties of PLA parts, increasing the strength and ductility/toughness characteristics of specimens up to 24%.

Keywords

Article history

  1. ReceivedUntil the next stage: 11 days
  2. Revision requestedUntil the next stage: 16 days
  3. RevisedUntil the next stage: 1 day
  4. AcceptedUntil the next stage: 2 days
  5. Published

How to cite

APA

Vicente, C., Fernandes, J., Deus, A., Vaz, M., Leite, M., & Reis, L. (2019). Effect of protective coatings on the water absorption and mechanical properties of 3D printed PLA. Fracture and Structural Integrity, 13(48), 748–756. https://doi.org/10.3221/IGF-ESIS.48.68

IEEE

C. Vicente, J. Fernandes, A. Deus, M. Vaz, M. Leite, and L. Reis, “Effect of protective coatings on the water absorption and mechanical properties of 3D printed PLA,” Fracture and Structural Integrity, vol. 13, no. 48, pp. 748–756, 2019, doi: 10.3221/IGF-ESIS.48.68.

MLA

Vicente, Carlos, et al. “Effect of protective coatings on the water absorption and mechanical properties of 3D printed PLA.” Fracture and Structural Integrity, vol. 13, no. 48, 2019, pp. 748–756. https://doi.org/10.3221/IGF-ESIS.48.68.

Chicago

Vicente, Carlos, João Fernandes, Augusto Deus, Maria Vaz, Marco Leite, and Luis Reis. 2019. “Effect of protective coatings on the water absorption and mechanical properties of 3D printed PLA.” Fracture and Structural Integrity 13 (48): 748–756. https://doi.org/10.3221/IGF-ESIS.48.68.

Harvard

Vicente, C., Fernandes, J., Deus, A., Vaz, M., Leite, M. and Reis, L. (2019) ‘Effect of protective coatings on the water absorption and mechanical properties of 3D printed PLA’, Fracture and Structural Integrity, 13(48), pp. 748–756. doi: 10.3221/IGF-ESIS.48.68.

Vancouver

Vicente C, Fernandes J, Deus A, Vaz M, Leite M, Reis L. Effect of protective coatings on the water absorption and mechanical properties of 3D printed PLA. Fracture and Structural Integrity. 2019;13(48):748-756. doi:10.3221/IGF-ESIS.48.68

BibTeX

@article{vicente2019, author = {Vicente, Carlos and Fernandes, João and Deus, Augusto and Vaz, Maria and Leite, Marco and Reis, Luis}, title = {Effect of protective coatings on the water absorption and mechanical properties of 3D printed PLA}, journal = {Fracture and Structural Integrity}, year = {2019}, volume = {13}, number = {48}, pages = {748--756}, doi = {10.3221/IGF-ESIS.48.68}, url = {https://doi.org/10.3221/IGF-ESIS.48.68}, issn = {1971-8993} }

RIS

TY - JOUR AU - Vicente, Carlos AU - Fernandes, João AU - Deus, Augusto AU - Vaz, Maria AU - Leite, Marco AU - Reis, Luis TI - Effect of protective coatings on the water absorption and mechanical properties of 3D printed PLA JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2019 DA - 2019/03/15 VL - 13 IS - 48 SP - 748 EP - 756 DO - 10.3221/IGF-ESIS.48.68 UR - https://doi.org/10.3221/IGF-ESIS.48.68 SN - 1971-8993 ER -

Licence

Copyright © 2019 Carlos Vicente, João Fernandes, Augusto Deus, Maria Vaz, Marco Leite, Luis Reis.

Copyright 
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.  

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