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Polyurethane Foam Composites Reinforced with Renewable Fillers for Cryogenic Insulation

Sawdust, microcellulose and nanocellulose and their silanized forms were used to reinforce rigid polyurethane (PU) foam composites. The concentration of fillers was varied in the range of 0.5–1.5%. For rigid PU foam formulations, three polyols from recycled and renewable materials were used, among o...

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Autores principales: Sture, Beatrise, Vevere, Laima, Kirpluks, Mikelis, Godina, Daniela, Fridrihsone, Anda, Cabulis, Ugis
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8658850/
https://www.ncbi.nlm.nih.gov/pubmed/34883591
http://dx.doi.org/10.3390/polym13234089
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author Sture, Beatrise
Vevere, Laima
Kirpluks, Mikelis
Godina, Daniela
Fridrihsone, Anda
Cabulis, Ugis
author_facet Sture, Beatrise
Vevere, Laima
Kirpluks, Mikelis
Godina, Daniela
Fridrihsone, Anda
Cabulis, Ugis
author_sort Sture, Beatrise
collection PubMed
description Sawdust, microcellulose and nanocellulose and their silanized forms were used to reinforce rigid polyurethane (PU) foam composites. The concentration of fillers was varied in the range of 0.5–1.5%. For rigid PU foam formulations, three polyols from recycled and renewable materials were used, among other components. Polyols were obtained from rapeseed oil, tall oil fatty acids and recycled polyethylene terephthalate. As rigid PU foam composites in literature have been described as appropriate thermal insulation material, the appliance of obtained composites for cryogenic insulation was investigated by determining the various physical-mechanical properties of composites. The physical-mechanical properties, such as the modulus of elasticity, compressive and tensile strength in both 293 K and 77 K, adhesion measurements with and without cryo-shock, apparent density, thermal conductivity coefficient, and safety coefficient were measured. The results showed that the addition of fillers did not give a significant improvement of characteristics.
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spelling pubmed-86588502021-12-10 Polyurethane Foam Composites Reinforced with Renewable Fillers for Cryogenic Insulation Sture, Beatrise Vevere, Laima Kirpluks, Mikelis Godina, Daniela Fridrihsone, Anda Cabulis, Ugis Polymers (Basel) Article Sawdust, microcellulose and nanocellulose and their silanized forms were used to reinforce rigid polyurethane (PU) foam composites. The concentration of fillers was varied in the range of 0.5–1.5%. For rigid PU foam formulations, three polyols from recycled and renewable materials were used, among other components. Polyols were obtained from rapeseed oil, tall oil fatty acids and recycled polyethylene terephthalate. As rigid PU foam composites in literature have been described as appropriate thermal insulation material, the appliance of obtained composites for cryogenic insulation was investigated by determining the various physical-mechanical properties of composites. The physical-mechanical properties, such as the modulus of elasticity, compressive and tensile strength in both 293 K and 77 K, adhesion measurements with and without cryo-shock, apparent density, thermal conductivity coefficient, and safety coefficient were measured. The results showed that the addition of fillers did not give a significant improvement of characteristics. MDPI 2021-11-24 /pmc/articles/PMC8658850/ /pubmed/34883591 http://dx.doi.org/10.3390/polym13234089 Text en © 2021 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
Sture, Beatrise
Vevere, Laima
Kirpluks, Mikelis
Godina, Daniela
Fridrihsone, Anda
Cabulis, Ugis
Polyurethane Foam Composites Reinforced with Renewable Fillers for Cryogenic Insulation
title Polyurethane Foam Composites Reinforced with Renewable Fillers for Cryogenic Insulation
title_full Polyurethane Foam Composites Reinforced with Renewable Fillers for Cryogenic Insulation
title_fullStr Polyurethane Foam Composites Reinforced with Renewable Fillers for Cryogenic Insulation
title_full_unstemmed Polyurethane Foam Composites Reinforced with Renewable Fillers for Cryogenic Insulation
title_short Polyurethane Foam Composites Reinforced with Renewable Fillers for Cryogenic Insulation
title_sort polyurethane foam composites reinforced with renewable fillers for cryogenic insulation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8658850/
https://www.ncbi.nlm.nih.gov/pubmed/34883591
http://dx.doi.org/10.3390/polym13234089
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