Aufsatz
Federal Ministry for Economics and Technology (BMWi). Grant Number: 03THW10K14
Liquid Silicone Rubber Foams Made with Water as Blowing Agent
Abstract
Liquid silicone rubber (LSR) is primarily used in injection molding. Foamed molded parts made of LSR are almost nonexistent because the process reliability of LSR foam injection molding is currently not given. It makes sense to have suitable foaming processes for this material as well, because the density of this elastomer is about 1.15 g cm−3. With the injection molding process presented herein for foaming LSR, density reductions of up to 40% can be achieved. In this process, up to 3% by weight of water is added to the material. In addition, the hardness of the component changes, it becomes softer. Especially in the case of hardness, the process parameter mold temperature has a decisive influence, as it determines the pore size in the component. Herein, the structural properties of the silicone foam are now discussed as a function of the process parameters and additives for foaming. Thus, with the new process, material can be saved, the haptic properties of components can be changed, and a stable processing method for foamed components made of LSR is found.
Sponsorship
Gefördert im Rahmen des Projekts DEALFederal Ministry for Economics and Technology (BMWi). Grant Number: 03THW10K14
Citation
@article{doi:10.17170/kobra-202201255612,
author={Marl, Svenja and Rüppel, Annette and Hartung, Michael and Klier, Kevin and Giesen, Ralf-Urs and Heim, Hans-Peter},
title={Liquid Silicone Rubber Foams Made with Water as Blowing Agent},
journal={Advanced Engineering Materials},
year={2021}
}
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3000 Marl, Svenja
3010 Rüppel, Annette
3010 Hartung, Michael
3010 Klier, Kevin
3010 Giesen, Ralf-Urs
3010 Heim, Hans-Peter
4000 Liquid Silicone Rubber Foams Made with Water as Blowing Agent / Marl, Svenja
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5550 {{Siliconkautschuk}}
5550 {{Flüssigkautschuk}}
5550 {{Spritzgießen}}
5550 {{Siliciumdioxid}}
5550 {{Schaumstoff}}
5550 {{Wasser}}
5550 {{Treibmittel}}
7136 ##0##http://hdl.handle.net/123456789/13630
<resource xsi:schemaLocation="http://datacite.org/schema/kernel-2.2 http://schema.datacite.org/meta/kernel-2.2/metadata.xsd"> 2022-02-16T15:05:31Z 2022-02-16T15:05:31Z 2021-08-18 doi:10.17170/kobra-202201255612 http://hdl.handle.net/123456789/13630 Gefördert im Rahmen des Projekts DEAL Federal Ministry for Economics and Technology (BMWi). Grant Number: 03THW10K14 eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ injection molding liquid silicone rubber silica silicone foam water 660 Liquid Silicone Rubber Foams Made with Water as Blowing Agent Aufsatz Liquid silicone rubber (LSR) is primarily used in injection molding. Foamed molded parts made of LSR are almost nonexistent because the process reliability of LSR foam injection molding is currently not given. It makes sense to have suitable foaming processes for this material as well, because the density of this elastomer is about 1.15 g cm−3. With the injection molding process presented herein for foaming LSR, density reductions of up to 40% can be achieved. In this process, up to 3% by weight of water is added to the material. In addition, the hardness of the component changes, it becomes softer. Especially in the case of hardness, the process parameter mold temperature has a decisive influence, as it determines the pore size in the component. Herein, the structural properties of the silicone foam are now discussed as a function of the process parameters and additives for foaming. Thus, with the new process, material can be saved, the haptic properties of components can be changed, and a stable processing method for foamed components made of LSR is found. open access Marl, Svenja Rüppel, Annette Hartung, Michael Klier, Kevin Giesen, Ralf-Urs Heim, Hans-Peter doi:10.1002/adem.202100382 Grant Number: 03THW10K14 Siliconkautschuk Flüssigkautschuk Spritzgießen Siliciumdioxid Schaumstoff Wasser Treibmittel publishedVersion eissn:1527-2648 Issue 1 Advanced Engineering Materials Volume 24 false </resource>
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