A New Method of Diatomaceous Earth Fractionation—A Bio-Raw Material Source for Epoxy-Based Composites
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 f...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/7/1663 |
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| author | Marta Dobrosielska Renata Dobrucka Michał Gloc Dariusz Brząkalski Marcin Szymański Krzysztof J. Kurzydłowski Robert E. Przekop |
| author_facet | Marta Dobrosielska Renata Dobrucka Michał Gloc Dariusz Brząkalski Marcin Szymański Krzysztof J. Kurzydłowski Robert E. Przekop |
| author_sort | Marta Dobrosielska |
| collection | DOAJ |
| description | 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%. |
| first_indexed | 2024-03-10T12:49:07Z |
| format | Article |
| id | doaj.art-2c8af57a45df42a698cb287bd24d0db4 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T12:49:07Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-2c8af57a45df42a698cb287bd24d0db42023-11-21T13:10:47ZengMDPI AGMaterials1996-19442021-03-01147166310.3390/ma14071663A New Method of Diatomaceous Earth Fractionation—A Bio-Raw Material Source for Epoxy-Based CompositesMarta Dobrosielska0Renata Dobrucka1Michał Gloc2Dariusz Brząkalski3Marcin Szymański4Krzysztof J. Kurzydłowski5Robert E. Przekop6Faculty of Materials Science and Engineering, Warsaw University of Technology, ul. Wołoska 141, 02-507 Warsaw, PolandFaculty of Materials Science and Engineering, Warsaw University of Technology, ul. Wołoska 141, 02-507 Warsaw, PolandFaculty of Materials Science and Engineering, Warsaw University of Technology, ul. Wołoska 141, 02-507 Warsaw, PolandFaculty of Chemistry, Adam Mickiewicz University in Poznań, 8 Uniwersytetu Poznańskiego, 61-614 Poznań, PolandCentre for Advanced Technologies, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614 Poznan, PolandFaculty of Materials Science and Engineering, Warsaw University of Technology, ul. Wołoska 141, 02-507 Warsaw, PolandCentre for Advanced Technologies, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614 Poznan, PolandThe 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%.https://www.mdpi.com/1996-1944/14/7/1663diatomitebio-compositesmechanical propertiesfractionationpurification of diatomaceous earthbio-raw materials |
| spellingShingle | Marta Dobrosielska Renata Dobrucka Michał Gloc Dariusz Brząkalski Marcin Szymański Krzysztof J. Kurzydłowski Robert E. Przekop A New Method of Diatomaceous Earth Fractionation—A Bio-Raw Material Source for Epoxy-Based Composites Materials diatomite bio-composites mechanical properties fractionation purification of diatomaceous earth bio-raw materials |
| title | A New Method of Diatomaceous Earth Fractionation—A Bio-Raw Material Source for Epoxy-Based Composites |
| title_full | A New Method of Diatomaceous Earth Fractionation—A Bio-Raw Material Source for Epoxy-Based Composites |
| title_fullStr | A New Method of Diatomaceous Earth Fractionation—A Bio-Raw Material Source for Epoxy-Based Composites |
| title_full_unstemmed | A New Method of Diatomaceous Earth Fractionation—A Bio-Raw Material Source for Epoxy-Based Composites |
| title_short | A New Method of Diatomaceous Earth Fractionation—A Bio-Raw Material Source for Epoxy-Based Composites |
| title_sort | new method of diatomaceous earth fractionation a bio raw material source for epoxy based composites |
| topic | diatomite bio-composites mechanical properties fractionation purification of diatomaceous earth bio-raw materials |
| url | https://www.mdpi.com/1996-1944/14/7/1663 |
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