A Comprehensive Study of Polyurethane Potting Compounds Doped with Magnesium Oxide Nanoparticles
Recently, polyurethanes (PURs) have become a very promising group of materials with considerable utilization and innovation potential. This work presents a comprehensive analysis of the changes in material properties important for PUR applications in the electrical industry due to the incorporation...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/6/1532 |
| _version_ | 1797609382402326528 |
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| author | Jaroslav Hornak Jakub Černohous Pavel Prosr Pavel Rous Pavel Trnka Anton Baran Štefan Hardoň |
| author_facet | Jaroslav Hornak Jakub Černohous Pavel Prosr Pavel Rous Pavel Trnka Anton Baran Štefan Hardoň |
| author_sort | Jaroslav Hornak |
| collection | DOAJ |
| description | Recently, polyurethanes (PURs) have become a very promising group of materials with considerable utilization and innovation potential. This work presents a comprehensive analysis of the changes in material properties important for PUR applications in the electrical industry due to the incorporation of magnesium oxide (MgO) nanoparticles at different weight ratios. From the results of the investigations carried out, it is evident that the incorporation of MgO improves the volume (by up to +0.5 order of magnitude) and surface (+1 order of magnitude) resistivities, reduces the dielectric losses at higher temperatures (−62%), improves the thermal stability of the material, and slows the decomposition reaction of polyurethane at specific temperatures (+30 °C). In contrast, the incorporation of MgO results in a slight decrease in the dielectric strength (−15%) and a significant decrease in the mechanical strength (−37%). |
| first_indexed | 2024-03-11T05:59:38Z |
| format | Article |
| id | doaj.art-db78a4f655ef48eaab8ccc139dd95958 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T05:59:38Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-db78a4f655ef48eaab8ccc139dd959582023-11-17T13:26:51ZengMDPI AGPolymers2073-43602023-03-01156153210.3390/polym15061532A Comprehensive Study of Polyurethane Potting Compounds Doped with Magnesium Oxide NanoparticlesJaroslav Hornak0Jakub Černohous1Pavel Prosr2Pavel Rous3Pavel Trnka4Anton Baran5Štefan Hardoň6Department of Materials and Technology, Faculty of Electrical Engineering, University of West Bohemia, 306 14 Pilsen, Czech RepublicDepartment of Materials and Technology, Faculty of Electrical Engineering, University of West Bohemia, 306 14 Pilsen, Czech RepublicDepartment of Materials and Technology, Faculty of Electrical Engineering, University of West Bohemia, 306 14 Pilsen, Czech RepublicDepartment of Materials and Technology, Faculty of Electrical Engineering, University of West Bohemia, 306 14 Pilsen, Czech RepublicDepartment of Materials and Technology, Faculty of Electrical Engineering, University of West Bohemia, 306 14 Pilsen, Czech RepublicDepartment of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Park Komenského 2, 042 00 Košice, SlovakiaDepartment of Physics, Faculty of Electrical Engineering and Information Technology, University of Žilina, 010 26 Žilina, SlovakiaRecently, polyurethanes (PURs) have become a very promising group of materials with considerable utilization and innovation potential. This work presents a comprehensive analysis of the changes in material properties important for PUR applications in the electrical industry due to the incorporation of magnesium oxide (MgO) nanoparticles at different weight ratios. From the results of the investigations carried out, it is evident that the incorporation of MgO improves the volume (by up to +0.5 order of magnitude) and surface (+1 order of magnitude) resistivities, reduces the dielectric losses at higher temperatures (−62%), improves the thermal stability of the material, and slows the decomposition reaction of polyurethane at specific temperatures (+30 °C). In contrast, the incorporation of MgO results in a slight decrease in the dielectric strength (−15%) and a significant decrease in the mechanical strength (−37%).https://www.mdpi.com/2073-4360/15/6/1532broadband dielectric spectroscopydielectric relaxationmagnesium oxidenanocompositesnuclear magnetic resonancepolyurethane |
| spellingShingle | Jaroslav Hornak Jakub Černohous Pavel Prosr Pavel Rous Pavel Trnka Anton Baran Štefan Hardoň A Comprehensive Study of Polyurethane Potting Compounds Doped with Magnesium Oxide Nanoparticles Polymers broadband dielectric spectroscopy dielectric relaxation magnesium oxide nanocomposites nuclear magnetic resonance polyurethane |
| title | A Comprehensive Study of Polyurethane Potting Compounds Doped with Magnesium Oxide Nanoparticles |
| title_full | A Comprehensive Study of Polyurethane Potting Compounds Doped with Magnesium Oxide Nanoparticles |
| title_fullStr | A Comprehensive Study of Polyurethane Potting Compounds Doped with Magnesium Oxide Nanoparticles |
| title_full_unstemmed | A Comprehensive Study of Polyurethane Potting Compounds Doped with Magnesium Oxide Nanoparticles |
| title_short | A Comprehensive Study of Polyurethane Potting Compounds Doped with Magnesium Oxide Nanoparticles |
| title_sort | comprehensive study of polyurethane potting compounds doped with magnesium oxide nanoparticles |
| topic | broadband dielectric spectroscopy dielectric relaxation magnesium oxide nanocomposites nuclear magnetic resonance polyurethane |
| url | https://www.mdpi.com/2073-4360/15/6/1532 |
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