Use of residues from secondary transformation processes of three tropical species in the manufacture of Edge glued panels

Abstract

The objective of this study was to evaluate the feasibility of manufacturing edge glued panels (EGP), made with wood waste from secondary transformation processes of the tropical species Cariniana domestica (Mart.) Miers (Cachimbo), Copaifera paupera (Copaiba), Cedrelinga cateniformis (Ducke) Ducke (screw) and their combinations. The quality of the joints glued with polyvinyl acetate (PVA) and isocyanate polymer emulsion (EPI) adhesives with a grammage of 180 g / m2 was evaluated through glue line shear test using the UNE-EN standards 13353 and UNE-EN 13354. Tests without pretreatment results for all the glued joints with PVA and EPI adhesives, demonstrated their technical feasibility for manufacturing EGP panels for indoor use, being recommendable to use PVA adhesive to reduce costs. Joints glued with EPI adhesive in the species Cariniana domestica, Copaifera paupera and the combination Cariniana domestica / Copaifera paupera proved their aptitude for the production of EGP panels for use in dry and humid environment; while those elaborated with Cedrelinga cateniformis and the combination Copaifera paupera / Cedrelinga cateniformis for use in a dry environment.