Influence of surface preparations of wood on the wetting and adhesion of coating

Abstract

PurposeThe purpose of this work was to study the effect of different wood surface preparations on the wetting and adhesion of coating.Design/methodology/approachIn this research, six different chemical preparations to evaluate the photostability and properties of wood coating. Also, the effect of the same wood treatments on the properties of the coating, i.e. wetting, adhesion and the permeability of two types of coatings, was investigated.FindingsAs a result, benzoyl chloride and chromic acid were found to be the most effective photostabilizing preparations. Solvent-based polyurethane was more compatible with the prepared wood surfaces compared with water-based alkyd coatings.Research limitations/implicationsChemical modifications of wood surfaces affected the wetting of various coatings.Practical implicationsVarious surface properties could be changed using preparation that affects important coating properties.Social implicationsUnfortunately, the properties of transparent wood coatings used outdoors disappear through the early years of use, essentially due to the wood substrate’s photodegradation.Originality/valueWood is a widespread substrate because of its comfortable handling, availability, proper cost of preparation and its good mechanical strength because of its density. Architects and designers tend to use wood in the construction of green buildings. However, this material is disposed to weathering while using outdoors and it should be solved.