Changes in Ecological Linseed Oil Paints During Outdoor Weathering of Wood Panels

摘要

In this research, three ecological paints based on linseed oil as the main component are characterized and investigated to optimize their properties and utilization in protection of wood surfaces. The aim is to find suitable parameters for application and drying of the paints, which can guarantee a better protection of wood surfaces during outdoor utilization. Initially, the three paints were characterized by determining some of their chemophysical parameters, such as density, viscosity, dry content, and glass transition temperature. Afterwards, panels of pine wood (Pinus sylvestris L.) were coated and exposed to outdoor weathering (OW). During OW color changes and hydrophobicity were repeatedly measured and monitored to evaluate the efficiency of the paints. To minimize the discoloration of wood substrate, paint formulations also include different types of pigments in their composition.