Sorptionsmessungen an mit Salzen imprägnierten Hölzern

Summary

As only few investigations had yet been made on the sorption behaviour of wood impregnated with protective salts, sorption tests on specimens of spruce impregnated with sodiumchloride and seven standard watersoluble wood preservatives were carried cut. According to the results the hygroscopical properties of salt impregnated woods mainly depend on the amount of salt retained. In the range of relative humidities between 40 and 90 percent—the climate where wood normally is used—the sorption behaviour deteriorates with increasing salt content. The application of protective salts is practically limited by the relative humidity corresponding to the vapor pressure of the saturated aqueous salt solution. Therefore preference should be given to protective salts reaching a defined efficiency with small quantities and the vapor pressure of which in satuvated aqueous solutions is as high as possible.