ABSTRACT
The aim of this study was to evaluate the physical and mechanical properties of OSB (Oriented Strand Board) panels produced with commercial adhesives and tannic adhesive from Stryphnodendron adstringens (Mart.) Coville. The commercial adhesives, urea formaldehyde (UF), phenol formaldehyde (FF) and Acacia mearnsi tannin were obtained by donation by respective manufacturing companies, while the tannins of barbatimao were obtained in the laboratory. The adhesives had the adhesives properties determined. OSB panels were produced, with the adhesives urea-formaldehyde, phenol-formaldehyde, tannin-formaldehyde from Acacia and Stryphnodendron . The panels were produced with strand particles generated from pine wood with an adhesive content of 8% at a 40 kgf.cm-2 of pressure, a time and pressing temperature of 8 minutes and 160°C, respectively. In all of the properties evaluated, the performance of the panels made with tannic adhesive from barbatimão was better when compared to panels manufactured with the tannic adhesive from acacia. The panels produced with urea-formaldehyde, phenol-formaldehyde and tannic adhesive of barbatimão met all requirements stipulated by the marketing standard. Fact that shows great use potential for tannin of barbatimão for OSB panels production.
Tannins; Natural adhesives; Oriented strand board
