Abstract
Progress in the development of the stereolithographic process enables the additive manufacturing of complex three-dimensional ceramic composite structures. This technology is based on photopolymers, which are filled with ceramic particles in contrast to classical stereolithography. The composition of the photopolymer has a significant influence on both, the properties of the printed part and on the printing process itself. The purpose of this master thesis was the evaluation of a 3-component monomer system consisting of thiol, alkyne and methacrylate compounds for the additive manufacturing of ceramic composite structures. In this system, the chain-growth mechanism of the methacrylate monomers is combined with the thiol-yne step-growth mechanism of the thiol and alkyne monomers. The generated homogeneous network structure enables a higher monomer conversion as well as a higher thermal stability in comparison to pure methacrylate or acrylate systems. Furthermore, the shrinkage stresses during photopolymerization are comparatively low leading to a higher ductility of the generated networks. Based on the relatively low viscosity of the evaluated system, the 3D-printing of a composite part containing 65 wt.-% ceramic particles was possible.
Translated title of the contribution | Evaluation of thiol-alkyne-methacrylate systems for the additive manufacturing of ceramic composite structures |
---|---|
Original language | German |
Qualification | Dipl.-Ing. |
Awarding Institution |
|
Supervisors/Advisors |
|
Award date | 25 Oct 2019 |
Publication status | Published - 2019 |
Bibliographical note
embargoed until 19-08-2024Keywords
- photopolymerization
- stereolithography
- ceramic composite material