ISOTHERMS OF WATER VAPOR SORPTION BY LIGHT INORGANIC 
AND POLYMER HEAT-INSULATING MATERIALS

I. Ya. Gnip, S. A. Veyalis, and V. I. Kershulis

UDC 543.712:691:699.86

This paper presents the results of an experimental study 
of the isotherms of water vapor sorption by glass-fiber and mineral-wool 
products, expanded polystyrene plates, and ecowool. It has been shown 
that the equilibrium specific moisture content of glass-fiber and 
mineral wool products depends on the binder content and density and 
that of expanded polystyrene plates is density-dependent.

"Thermal Insulation" Institute, Gedinimas Vilnius Technical 
University, 28, Linkmyanu Str., Vilnius, 08217, Lithuania. Translated 
from Inzhenerno-Fizicheskii Zhurnal, Vol. 79, No. 1, pp. 41-47, 
January-February, 2006. Original article submitted March 23, 2004; 
revision submitted December 3, 2004.