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Liquid Silicone Rubber Foamed with Thermoplastic Expandable Microspheres

To reduce the material costs as well as the density of Liquid Silicone Rubber (LSR), LSR foams can be produced in an injection molding process. Expandable thermoplastic microspheres can be used as blowing agents. This publication deals with the analysis of the cell structure of these LSR foams. For...

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Detalles Bibliográficos
Autores principales: Marl, Svenja, Giesen, Ralf-Urs, Heim, Hans-Peter
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9181411/
https://www.ncbi.nlm.nih.gov/pubmed/35683079
http://dx.doi.org/10.3390/ma15113779
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author Marl, Svenja
Giesen, Ralf-Urs
Heim, Hans-Peter
author_facet Marl, Svenja
Giesen, Ralf-Urs
Heim, Hans-Peter
author_sort Marl, Svenja
collection PubMed
description To reduce the material costs as well as the density of Liquid Silicone Rubber (LSR), LSR foams can be produced in an injection molding process. Expandable thermoplastic microspheres can be used as blowing agents. This publication deals with the analysis of the cell structure of these LSR foams. For this purpose, cylindrical disks are injection molded and examined for their cell structure as a function of different proportions of microspheres using a scanning electron spectroscope. In addition, the density of the samples is determined. It was found that a very homogeneous cell structure is produced in this process, that heat transport has a significant influence on the expansion of the microspheres, and that the formation of a filler network limits the expansion at higher proportions of blowing agent.
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spelling pubmed-91814112022-06-10 Liquid Silicone Rubber Foamed with Thermoplastic Expandable Microspheres Marl, Svenja Giesen, Ralf-Urs Heim, Hans-Peter Materials (Basel) Article To reduce the material costs as well as the density of Liquid Silicone Rubber (LSR), LSR foams can be produced in an injection molding process. Expandable thermoplastic microspheres can be used as blowing agents. This publication deals with the analysis of the cell structure of these LSR foams. For this purpose, cylindrical disks are injection molded and examined for their cell structure as a function of different proportions of microspheres using a scanning electron spectroscope. In addition, the density of the samples is determined. It was found that a very homogeneous cell structure is produced in this process, that heat transport has a significant influence on the expansion of the microspheres, and that the formation of a filler network limits the expansion at higher proportions of blowing agent. MDPI 2022-05-25 /pmc/articles/PMC9181411/ /pubmed/35683079 http://dx.doi.org/10.3390/ma15113779 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
Marl, Svenja
Giesen, Ralf-Urs
Heim, Hans-Peter
Liquid Silicone Rubber Foamed with Thermoplastic Expandable Microspheres
title Liquid Silicone Rubber Foamed with Thermoplastic Expandable Microspheres
title_full Liquid Silicone Rubber Foamed with Thermoplastic Expandable Microspheres
title_fullStr Liquid Silicone Rubber Foamed with Thermoplastic Expandable Microspheres
title_full_unstemmed Liquid Silicone Rubber Foamed with Thermoplastic Expandable Microspheres
title_short Liquid Silicone Rubber Foamed with Thermoplastic Expandable Microspheres
title_sort liquid silicone rubber foamed with thermoplastic expandable microspheres
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9181411/
https://www.ncbi.nlm.nih.gov/pubmed/35683079
http://dx.doi.org/10.3390/ma15113779
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