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Comprehensive Analysis of the Influence of Expanded Vermiculite on the Foaming Process and Selected Properties of Composite Rigid Polyurethane Foams
This article presents the results of research on obtaining new polyurethane (PUR) foams modified with thermally expanded vermiculite. The filler was added in amount of 3 wt.% up to 15 wt.%. The additionally applied procedure of immersion the non-organic filler in H(2)O(2) was performed to increase t...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9692458/ https://www.ncbi.nlm.nih.gov/pubmed/36433094 http://dx.doi.org/10.3390/polym14224967 |
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author | Barczewski, Mateusz Kurańska, Maria Sałasińska, Kamila Aniśko, Joanna Szulc, Joanna Szafraniak-Wiza, Izabela Prociak, Aleksander Polaczek, Krzysztof Uram, Katarzyna Surmacz, Karolina Piasecki, Adam |
author_facet | Barczewski, Mateusz Kurańska, Maria Sałasińska, Kamila Aniśko, Joanna Szulc, Joanna Szafraniak-Wiza, Izabela Prociak, Aleksander Polaczek, Krzysztof Uram, Katarzyna Surmacz, Karolina Piasecki, Adam |
author_sort | Barczewski, Mateusz |
collection | PubMed |
description | This article presents the results of research on obtaining new polyurethane (PUR) foams modified with thermally expanded vermiculite. The filler was added in amount of 3 wt.% up to 15 wt.%. The additionally applied procedure of immersion the non-organic filler in H(2)O(2) was performed to increase the exfoliation effect of thermally treated mineral and additional oxidation the surfaces. The effect of fillers on foaming process, cell structure, thermal insulation, apparent density, compressive strength, thermal properties, and flammability are assessed. The foaming process of PUR foams modified with vermiculite was comparable for all systems, regardless of the content of the filler. A slight increase in reactivity was observed, confirmed by a faster decrease in dielectric polarization for the system with modified vermiculite by H(2)O(2). The modification of the reference system with the vermiculite increased the content of closed cells from 76% to 91% for the foams with the highest vermiculite content. Coefficient of thermal conductivity of reference foam and foams modified with vermiculite was in the range 24–26 mW/mK. The use of vermiculite up to 15 wt.% did not influence significantly on mechanical properties and flammability, which from an economic point of view is important because it is possible to reduce the cost of materials by introducing a cheap filler without deteriorating their properties. |
format | Online Article Text |
id | pubmed-9692458 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96924582022-11-26 Comprehensive Analysis of the Influence of Expanded Vermiculite on the Foaming Process and Selected Properties of Composite Rigid Polyurethane Foams Barczewski, Mateusz Kurańska, Maria Sałasińska, Kamila Aniśko, Joanna Szulc, Joanna Szafraniak-Wiza, Izabela Prociak, Aleksander Polaczek, Krzysztof Uram, Katarzyna Surmacz, Karolina Piasecki, Adam Polymers (Basel) Article This article presents the results of research on obtaining new polyurethane (PUR) foams modified with thermally expanded vermiculite. The filler was added in amount of 3 wt.% up to 15 wt.%. The additionally applied procedure of immersion the non-organic filler in H(2)O(2) was performed to increase the exfoliation effect of thermally treated mineral and additional oxidation the surfaces. The effect of fillers on foaming process, cell structure, thermal insulation, apparent density, compressive strength, thermal properties, and flammability are assessed. The foaming process of PUR foams modified with vermiculite was comparable for all systems, regardless of the content of the filler. A slight increase in reactivity was observed, confirmed by a faster decrease in dielectric polarization for the system with modified vermiculite by H(2)O(2). The modification of the reference system with the vermiculite increased the content of closed cells from 76% to 91% for the foams with the highest vermiculite content. Coefficient of thermal conductivity of reference foam and foams modified with vermiculite was in the range 24–26 mW/mK. The use of vermiculite up to 15 wt.% did not influence significantly on mechanical properties and flammability, which from an economic point of view is important because it is possible to reduce the cost of materials by introducing a cheap filler without deteriorating their properties. MDPI 2022-11-16 /pmc/articles/PMC9692458/ /pubmed/36433094 http://dx.doi.org/10.3390/polym14224967 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Barczewski, Mateusz Kurańska, Maria Sałasińska, Kamila Aniśko, Joanna Szulc, Joanna Szafraniak-Wiza, Izabela Prociak, Aleksander Polaczek, Krzysztof Uram, Katarzyna Surmacz, Karolina Piasecki, Adam Comprehensive Analysis of the Influence of Expanded Vermiculite on the Foaming Process and Selected Properties of Composite Rigid Polyurethane Foams |
title | Comprehensive Analysis of the Influence of Expanded Vermiculite on the Foaming Process and Selected Properties of Composite Rigid Polyurethane Foams |
title_full | Comprehensive Analysis of the Influence of Expanded Vermiculite on the Foaming Process and Selected Properties of Composite Rigid Polyurethane Foams |
title_fullStr | Comprehensive Analysis of the Influence of Expanded Vermiculite on the Foaming Process and Selected Properties of Composite Rigid Polyurethane Foams |
title_full_unstemmed | Comprehensive Analysis of the Influence of Expanded Vermiculite on the Foaming Process and Selected Properties of Composite Rigid Polyurethane Foams |
title_short | Comprehensive Analysis of the Influence of Expanded Vermiculite on the Foaming Process and Selected Properties of Composite Rigid Polyurethane Foams |
title_sort | comprehensive analysis of the influence of expanded vermiculite on the foaming process and selected properties of composite rigid polyurethane foams |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9692458/ https://www.ncbi.nlm.nih.gov/pubmed/36433094 http://dx.doi.org/10.3390/polym14224967 |
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