Painéis compensado de eucalipto: estudo de caso de espécies e procedências

Abstract

This work aimed at evaluating 15 provenances of Eucalyptus cloeziana, Eucalyptus grandis and Eucalypotus salignafor multilaminated plywood boards manufacturing. Six boards for each provenance were made. Phenol-formaldehyde adhesive with320g/m² glue content was used. The utilized pressing cycle was of 15kgf/cm², at the temperature of 150ºC during 10 minutes. From theresults obtained regarding the physical properties, the species of Eucalyptus cloeziana and Eucalyptus saligna performed better. In themechanical tests, MOE presented itself above the demands of the norm with the exception of provenance 7785 of Eucalyptus saligna,in which stress was performed parallel to thecover fibers. For parallel MOR, only the provenances 9789 and 10695 of Eucalyptusgrandis and 97852 of Eucalyptus cloeziana managed to reach the demands of the norm ABNT 31:000.05-001/2. For shearing stressand failure in wood, all the provenances and species showed themselves above the demands, with the exception of 10634; 48 and 9753of Eucalyptus grandis.