Surface properties of fibers are important in all products and materials made of stone wool. Understanding the surface chemistry is crucial because it has a significant effect on the strength, chemical durability, ageing properties and adhesion properties of fibers. Surface chemical properties and reactivity can result in composition, as wells as structural changes, at the glass surface, which can significantly alter the properties of the glass.
Different media near the surface of the fibers have the potential of changing the surface chemistry of the fibers and by that, changing the material. Change in surface properties and behaviour is highly disadvantageous for durability, ageing and adhesion of coupling agent/binder. Leaching from the fibers in aqueous media depends on pH, ion composition, temperature, humidity and CO2.
The aim is to improve product properties in contact with different media by understanding the chemical reactions in the interfacial region and their dependence on the media and the surface chemical composition.