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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...
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/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. |
format | Online Article Text |
id | pubmed-9181411 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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