Publication detail

3D printing and post-curing optimization of photopolymerized structures: Basic concepts and effective tools for improved thermomechanical properties

ŠTAFFOVÁ, M. ONDREÁŠ, F. SVATÍK, J. ZBONČÁK, M. JANČÁŘ, J. LEPCIO, P.

Original Title

3D printing and post-curing optimization of photopolymerized structures: Basic concepts and effective tools for improved thermomechanical properties

Type

journal article in Web of Science

Language

English

Original Abstract

The final thermo-mechanical properties of structural parts fabricated by masked stereolithography (MSLA) are highly determined not only by the processing parameters, but also by the post-processing methods. Improper implementation of post-treatment often leads to underperforming printouts. A novel tool for complex characterization of 3D printed bodies was developed and systematically demonstrated on a commercial free-radical photopolymerization (FRP) resin. The method relies on superimposed static and oscillatory mechanical test combining the heat deflection temperature (HDT) measurement together with the dynamic mechanical analysis (DMA) in a single test for fast and reliable characterization of parameters determining the curing behaviour of the photopolymer. The influence of post-curing time was addressed with a special focus on network density. Furthermore, the print orientation, having a high impact on mechanical properties, is discussed with a particular regard on the residual stress mitigation in future applications, such as 3D-printed cellular bodies.

Keywords

3D printing;Masked stereolithography;Post processing;DMA;Print orientation;Network density

Authors

ŠTAFFOVÁ, M.; ONDREÁŠ, F.; SVATÍK, J.; ZBONČÁK, M.; JANČÁŘ, J.; LEPCIO, P.

Released

4. 2. 2022

Publisher

Elsevier

ISBN

0142-9418

Periodical

POLYMER TESTING

Year of study

108

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

11

Pages count

11

URL

https://www.sciencedirect.com/science/article/pii/S0142941822000277

Full text in the Digital Library

http://hdl.handle.net/11012/203965

BibTex

@article{BUT176673,
  author="ŠTAFFOVÁ, M. and ONDREÁŠ, F. and SVATÍK, J. and ZBONČÁK, M. and JANČÁŘ, J. and LEPCIO, P.",
  title="3D printing and post-curing optimization of photopolymerized structures: Basic concepts and effective tools for improved thermomechanical properties",
  journal="POLYMER TESTING",
  year="2022",
  volume="108",
  number="1",
  pages="1--11",
  doi="10.1016/j.polymertesting.2022.107499",
  issn="0142-9418",
  url="https://www.sciencedirect.com/science/article/pii/S0142941822000277"
}