Next Article in Journal
Effect of Thermal Aging on the Mechanical Properties of High Tenacity Polyester Yarn
Previous Article in Journal
Experimental Investigations on Interface between Ordinary and Lightweight Aggregate Concretes Cast at Different Times
Article

A New Method of Diatomaceous Earth Fractionation—A Bio-Raw Material Source for Epoxy-Based Composites

1
Faculty of Materials Science and Engineering, Warsaw University of Technology, ul. Wołoska 141, 02-507 Warsaw, Poland
2
Department of Non-Food Products Quality and Packaging Development, Institute of Quality Science, Poznań University of Economics and Business, al. Niepodległości 10, 61-875 Poznań, Poland
3
Faculty of Chemistry, Adam Mickiewicz University in Poznań, 8 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland
4
Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland
*
Authors to whom correspondence should be addressed.
Academic Editor: Debora Puglia
Materials 2021, 14(7), 1663; https://doi.org/10.3390/ma14071663
Received: 8 March 2021 / Revised: 19 March 2021 / Accepted: 23 March 2021 / Published: 28 March 2021
The authors of this paper use an original method of diatomaceous earth fractionation, which allows for obtaining a filler with a specific particle size distribution. The method makes it possible to separate small, disintegrated and broken diatom frustules from those which maintained their original form in diatomaceous earth. The study covers a range of tests conducted to prove that such a separated diatomic fraction (3–30 µm) shows features different from the base diatomite (from 1 to above 40 µm) used as an epoxy resin filler. We have examined the mechanical properties of a series of diatomite/resin composites, considering the weight fraction of diatoms and the parameters of the composite production process. The studied composites of Epidian 601 epoxy resin cross-linked with amine-based curing agent Z-1 contained 0 to 70% vol. of diatoms or diatomaceous earth. Samples were produced by being casted into silicone molds in vacuum degassing conditions and, alternatively, without degassing. The results have shown that the size and morphology of the filler based on diatomaceous earth affects mechanical and rheological properties of systems based on epoxy resin. Elongation at rupture and flexural stress at rupture were both raised by up to 35%, and impact strength by up to 25%. View Full-Text
Keywords: diatomite; bio-composites; mechanical properties; fractionation; purification of diatomaceous earth; bio-raw materials diatomite; bio-composites; mechanical properties; fractionation; purification of diatomaceous earth; bio-raw materials
Show Figures

Figure 1

MDPI and ACS Style

Dobrosielska, M.; Dobrucka, R.; Gloc, M.; Brząkalski, D.; Szymański, M.; Kurzydłowski, K.J.; Przekop, R.E. A New Method of Diatomaceous Earth Fractionation—A Bio-Raw Material Source for Epoxy-Based Composites. Materials 2021, 14, 1663. https://doi.org/10.3390/ma14071663

AMA Style

Dobrosielska M, Dobrucka R, Gloc M, Brząkalski D, Szymański M, Kurzydłowski KJ, Przekop RE. A New Method of Diatomaceous Earth Fractionation—A Bio-Raw Material Source for Epoxy-Based Composites. Materials. 2021; 14(7):1663. https://doi.org/10.3390/ma14071663

Chicago/Turabian Style

Dobrosielska, Marta, Renata Dobrucka, Michał Gloc, Dariusz Brząkalski, Marcin Szymański, Krzysztof J. Kurzydłowski, and Robert E. Przekop 2021. "A New Method of Diatomaceous Earth Fractionation—A Bio-Raw Material Source for Epoxy-Based Composites" Materials 14, no. 7: 1663. https://doi.org/10.3390/ma14071663

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop