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Surfactants and Adherent Silicon Resins - New Protective Agents for Natural Stone

Published online by Cambridge University Press:  28 February 2011

Rolf Snethlage  and
Eberhard Wendler
Rolf Snethlage
Affiliation:
Bavarian State Conservation Office, Central Laboratory, Luisenstraβe 37, D–8000 Munich 2, Federal Republic of Germany
Eberhard Wendler
Affiliation:
Geological Institute of the Ludwig-Maximilians-University, Luisenstrape 37, D–8000 Munich 2, Federal Republic of Germany
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Abstract

The present paper reports investigations on the application of surfactants in the stone conservation. It is found that alkyl ammonium chlorides reduce the hygric dilatation of clay-rich sandstones to half of the original value. Polysiloxane films can be tightly bound to clay mineral basal planes using aminoalkyl silane as primer. The water uptake as well as the hygric swelling are markedly reduced. Well defined mixtures of ethanolic alkyl silane and aqueous aminoalkyl silane solutions form stable microemulsions. They can be used as commercial conservative products which are compatable with the environment.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 185: Symposium G – Materials Issues in Art and Archaeology II , 1990 , 193
Copyright
Copyright © Materials Research Society 1990

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References

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