High Consistency Silicone Rubber Foams

Timo Hofmann; Ralf-Urs Giesen; Hans-Peter Heim

doi:10.3390/polym16091181

journal article Open Access Apr 23, 2024

High Consistency Silicone Rubber Foams

Timo Hofmann Ralf-Urs Giesen Hans-Peter Heim

Polymers Vol. 16 No. 9 pp. 1181 · MDPI AG

View at Publisher Save 10.3390/polym16091181

Abstract

Silicone elastomers are high-performance plastics. In the extrusion process, only high-consistency silicone rubbers were used. In order to reduce the cost and weight, silicone rubbers can be foamed during processing. In this study, high-consistency silicone rubber is processed with different physical and chemical blowing agents. The resulting reaction kinetics, as well as the mechanical and morphological properties, had been investigated and compared with each other. This showed that the chemical blowing agent significantly influenced the crosslinking reaction compared to the microspheres and the water/silica mixture tested, but it also achieved the lowest density compared to the physical blowing agents. When evaluating the foam morphology, it became clear that the largest number of pores was achieved with the microspheres and the largest pores when using the water/silica mixture. Furthermore, it has been shown that the different mechanisms of action of the blowing agents have a major influence on the mechanical properties, such as the micro shore hardness and the foam morphology.

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Details

Published: Apr 23, 2024
Vol/Issue: 16(9)
Pages: 1181
License: View

Authors

T

Timo Hofmann

Polymer Engineering, Institute of Material Engineering, University of Kassel, 34125 Kassel, Germany

R

Ralf-Urs Giesen

Polymer Engineering, Institute of Material Engineering, University of Kassel, 34125 Kassel, Germany

H

Hans-Peter Heim

Polymer Engineering, Institute of Material Engineering, University of Kassel, 34125 Kassel, Germany

Cite This Article

Timo Hofmann, Ralf-Urs Giesen, Hans-Peter Heim (2024). High Consistency Silicone Rubber Foams. Polymers, 16(9), 1181. https://doi.org/10.3390/polym16091181

High Consistency Silicone Rubber Foams

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