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Study of Curing Processes in PDMS at Various Stoichiometric Ratios by Longitudinal Ultrasonic Waves

Published online by Cambridge University Press:  21 February 2011

A. Shefer ,
G. Gorodetsky  and
M. Gottlieb
A. Shefer
Affiliation:
Chemical Engineering Department,Ben-Gurion University, Beer-Sheva, 84105, Israel
G. Gorodetsky
Affiliation:
Physics Department,Ben-Gurion University, Beer-Sheva, 84105, Israel
M. Gottlieb
Affiliation:
Chemical Engineering Department,Ben-Gurion University, Beer-Sheva, 84105, Israel
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Abstract

Curing reactions of linear vinyl terminated poly(dimethylsiloxane) with a four functional hydride silane crosslinker at various stoichiometric ratios, were studied by wave propagation at ultrasonic frequencies. Longitudinal wave velocity was found to be sensitive to the covalent endlinking, and gel point in these systems.

The observed changes in longitudinal wave velocity during the reaction are governed by changes in the bulk modulus of the system.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 177: Symposium V – Macromolecular Liquids , 1989 , 31
Copyright
Copyright © Materials Research Society 1990

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References

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